Fujitsu MB3878 User's Manual
Contents
1. O3 066 40 0091 agam 002 aan n NENNEN ids aiqeisnipe si eBeyoA a Sd 89 e g 2 OSE EM RS V SH OM 28 Ti 6 6600 lt 29 vd T SH J0J3 00 7 H M a H ID 8 zu lt SO ol eie lt LNO gt 2700 008 gt 9 49 lt 9 0 WMd gt 9 Joidepy OV PU z MA lt o l n n lt m MB3878 18 E PARTS LIST for APPLICATION EXAMPLE 1 COMPONENT Diode SPECIFICATION Si4435DY 2N7002 MBRS130LT3 VENDOR VISHAY SILICONIX VISHAY SILICONIX MOTOROLA PARTS No Si4435DY 2N7002 MBRS130LT3 Coil 12uH 4 0A 38ma SUMIDA CDRH124 12 uH OS Condenser OS Condenser Ceramics Condenser Ceramics Condenser Ceramics Condenser Ceramics Condenser Ceramics Condenser Ceramics Condenser Ceramics Condenser 22uF 25V 10 100uF 25V 10 92 2200 pF 10 0 1 WF 16 V 1500 pF 10 0 1 WF 25V 10000 pF 10 0 1 WF 16V 5600 pF 10 R10 to R13 R14 R15 R16 R17 R18 Note Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor 0 033 Q 1 0 47 1 0 96 330 1 0 96 82 0 5 962. _____ ___ 280 270 8 260 250 240 40 20 0 20 40 60 80 100 Ambient temperature C Triangular wave oscillator frequency Error amplifier threshold voltage fosc kHz Triangular wave oscillator frequency vs 340 power supply voltage Ta 25 C J 330 CTL 5V 4 320 RT 47 310 300 290 270 260 250 240 0 5 10 15 20 25 Power supply voltage Vcc V Error amplifier threshold voltage vs ambient temperature Error Amp 3 20 0 20 40 60 80 100 Ambient temperature C Continued MB3878 Gain Av dB Error amplifier gain and phase vs frequency Gain Av dB mec 40 Av 180 20 90 2 0 0 o 20 90 Q 40 180 1k 10k 100 k 1M 10M Frequency f Hz Current detection amplifier gain and phase vs frequency Power dissipation Po mW y 5576 40 180 20 90 _ 0 0 o 20 90 40 180 1k 10k 100 k 1M 10M Frequency f Hz Power dissi
3. siNK OUTC1 OUTC2 2 V OUTC1 OUTC2 2 V PWM comparator block PWM Comp Threshold voltage 0 Duty cycle 100 Output block OUT Output source current source OUT 11 V Duty lt 5 t 1 fosc x Duty Output sink current siNK OUT 16 V Duty lt 5 t 1 fosc x Duty Output ON resistor Rou OUT 45 mA OUT 45 mA Rise time tr1 OUT 3300 pF equivalent to Si4435 x 1 Fall time tf1 OUT 3300 pF equivalent to Si4435 x 1 Control block CTL CTL input voltage VoN Active mode Standby mode Input current CTL 5V CTL 0V Bias voltage block VH Output voltage VCC VCC O 7 V to 25 V VH 0 to 30 mA General Standby current VCC VCC 0 CTL 0V Power supply current Standard design value VCC VCC CTL 5V MB3878 TYPICAL CHARACTERISTICS Power supply current vs power supply voltage Reference voltage vs power supply voltage 12 10 25 4 25 CT
4. FUJITSU SEMICONDUCTOR DS04 27706 2E 55 For Power Supply Applications Secondary battery DC DC Converter IC for Charging MB3878 DESCRIPTION The MB3878 is a DC DC converter IC suitable for down conversion using pulse width PWM charging and enabling output voltage to be set to any desired level from one cell to four cells These ICs can dynamically control the secondary battery s charge current by detecting a voltage drop in an AC adaptor in order to keep its power constant dynamically controlled charging The charging method enables quick charging for example with the AC adaptor during operation of a notebook PC The MB3878 provides a broad power supply voltage range and low standby current as well as high efficiency making it ideal for use as a built in charging device in products such as notebook PC This product is covered by US Patent Number 6 147 477 FEATURES Detecting a voltage drop in the AC adaptor and dynamically controlling the charge current Dynamically controlled charging Output voltage setting using external resistor 1 cell to 4 cells e High efficiency 94 96 Wide range of operating supply voltages 7 V to 25 V Output voltage setting accuracy 4 2V 0 8 per cell Built in frequency setting capacitor enables frequency setting using external resistor only Oscillator frequency range 100kHz to 500kHz Continued PACKAGE 24 pin plastic SSOP FPT 2
5. 330 0 5 96 68 0 5 96 22 1 0 96 100 1 0 96 10 1 0 96 30 0 5 1 3 KQ 0 5 110 Q 0 5 96 200 5 96 100 0 5 96 200 0 5 VISHAY SILICONIX VISHAY Intertechnology Inc MOTOROLA Motorola Japan Ltd SUMIDA SUMIDA ELECTRIC CO Ltd MB3878 REFERENCE DATA Conversion efficiency vs charge current Conversion efficiency vs charge voltage Fixed voltage mode Fixed current mode 100 aaar 100 VIN 19 V gt VIN 19 V amp 98 BATT charge voltage 12 6 1 277 9 2 8 98 BATT Electronic load 96 n x leart VIN x x 100 96 Product of KIKUSUI PLZ 150W 4 gt 94 gt 94 o 9 5 9 9 S 90 88 88 5 5 a 86 3 86 84 gt gt 5 5 82 a 10m 100 m 1 10 0 2 4 6 8 10 12 14 16 BATT charge current leatt A BATT charge voltage BATT voltage vs BATT charge current 18 VIN 19 V 16 BATT Electronic load Product of KIKUSUI PLZ 150W amp 12 gt 10 Dead Battery gt 8 5 9 6 4 m 2 0 DCC Dynamically Controlled Charging 0 1 2 3 4 5 BATT charge current DC DC
6. V Vo R3 lt Error 3 gt R4 m f F T sey 777 CS METHOD OF SETTING THE CHARGING CURRENT The charge current output control current value can be set with the voltage at the INE1 terminal pin 9 If a current exceeding the set value attempts to flow the charge voltage drops according to the set current value Battery charge current setting voltage INE1 INE1 V 25 x H A x Rs Q METHOD OF SETTING THE SOFT START TIME Upon activation the IC starts charging the capacitor Cs connected to the CS terminal pin 22 The error amplifier causes soft start operation to be performed with the output voltage in proportion to the CS terminal voltage regardless of the load current of the DC DC converter Soft start time ts Time taken for the output voltage to reach 100 ts s 4 2 x Cs uF METHOD OF SETTING THE TRIANGULAR WAVE OSCILLATOR FREQUENCY The trianguar wave oscillator frequency can be set by the timing resistor Rt connected the RT terminal pin 17 Triangular wave oscillator frequency fosc fosc kHz 13630 Rr MB3878 _ AC ADAPTOR VOLTAGE DETECTION With an external resistor connected to the INE2 terminal pin 3 the IC enters the dynamically controlled charging mode to reduce the charge current to keep AC adaptor power constant when the partial potential point A of the AC adaptor voltage Vcc becomes lower than the voltage
7. C Input current INE3 Voltage gain Av DC Frequency bandwidth Bw Output voltage VFBL Output source current SOURCE FB3 2V Output sink current sink FB3 2V OUTD pin output leak current OUTD 16 8 V OUTD pin output ON resistor Ron OUTD 1 mA Current detection amplifier block Current Amp 1 Current Amp 2 Input current INC1 INC2 12 7 V INC1 INC2 12 6 V INC1 INC2 12 7 V INC2 12 6 V INC1 INC2 0 1 V INC2 0 V INC1 INC2 0 1 V INC2 0 V Current detection voltage INC1 INC2 12 7 V INC1 INC2 12 6 V HNC1 INC2 12 63 V INC1 INC2 12 6 V INC1 INC2 0 1 V INC2 0 V INC1 INC2 0 03 V INC2 0 V Common mode input voltage range Voltage gain INC1 INC2 12 7 V INC1 INC2 12 6 V Frequency bandwidth Standard design value 0 dB Continued MB3878 Continued Parameter Current detection amplifier block Current Amp 1 Current Amp 2 Output voltage Symbol 25 19 V 19 V VREF 0 mA Conditions Output source current Output sink current source
8. Conditions 25 25 19 V 19 V VREF 0 30 10 85 Input stability VCC 7 V to 25 V Load stability Short circuit output current VREF 0 0 1 mA VREF 1 V Under voltage lockout protection circuit block UVLO Threshold voltage VCC VCC VCC VCC VCC Hysteresis width VCC VCC 0 Threshold voltage Hysteresis width VREF Vu VREF y Vu Soft start block SOFT Charge current Ics Triangular waveform oscillator circuit block OSC Oscillation frequency fosc RT 47 Frequency temperature stability 30 C to 85 C Error amplifier block Error Amp 1 Error Amp 2 Input offset voltage FB1 FB2 2V Input bias current Common mode input voltage range Voltage gain Av Frequency bandwidth Bw Output voltage Vrat Output source current source FB1 2 2 V Output sink current Standard design value Isink FB1 FB2 2V Continued MB3878 Parameter Error amplifier block Error Amp 3 Threshold voltage 25 C VCC 19 V VCC O 19 V VREF 0 mA Conditions FB3 2 V 25 FB3 2 V Ta 30 C to 85
9. In the standby mode this circuit outputs the potential equal to Vcc 2 Protection Functions Under voltage lockout protection circuit UVLO The transient state or a momentary decrease in supply voltage or internal reference voltage VREF which occurs when the power supply is turned on may cause malfunctions in the control IC resulting in breakdown or degradation of the system To prevent such malfunction the under voltage lockout protection circuit detects a supply voltage or internal reference voltage drop and fixes the OUT terminal pin 20 to the H level The system restores voltage supply when the supply voltage or internal reference voltage reaches the threshold voltage of the under voltage lockout protection circuit 3 Soft start Function Soft start block SOFT Connecting a capacitor to the CS terminal pin 22 prevents surge currents when the IC is turned on Using an error amplifier for soft start detection makes the soft start time constant independent of the output load of the DC DC converter MB3878 a a a uss5n w SETTING THE CHARGING VOLTAGE The charging voltage DC DC output voltage can be set by connecting external voltage setting resistors R3 R4 to INE3 terminal Be sure to select a resistor value that allows you to ignore the on resistor 70 Q 1mA of the internal FET connected to the OUTD terminal pin 11 Battery charging voltage V R4 R4 x 4 2
10. at the INE2 terminal AC adaptor detected voltage setting Vth Vth V R1 R2 R2 x INE2 INE2 setting voltage range 1 176 V to 4 2 V equivalent to 7 V to 25 V for Vcc lt Error Amp 2 gt Vcc lt R1 INE2 OPERATION TIMING DIAGRAM 2 5 V Error Amp 1 FB1 Z Z Error Amp 3 2 A Error Amp 2 FB2 15V OUT 1 LER LIL IL L adaptor dynamically Constant Constant current control AC adaptor dynamically controlled charging voltage control controlled charging 15 MB3878 PROCESSING WITHOUT USE OF THE CS PIN If the soft start function is not used the CS terminal pin 22 should be left open Open cs 2 O When soft start time is specified NOTE ON AN EXTERNAL REVERSE CURRENT PREVENTIVE DIODE Insert a reverse current preventive diode at one of the three locations marked to prevent reverse current from the battery When selecting the reverse current prevention diode be sure to consider the reverse voltage Vr and reverse current In of the diode Battery 4 T T 16 17 peo118 A LZ 01 AE L NIA indui jo 41 440 MS 298 NO MS MB3878 4d 0022 S9
11. 1 between body and ground Do not apply negative voltages The use of negative voltages below 0 3 V may create parasitic transistors on LSI lines which can cause abnormal operation ORDERING INFORMATION Part number Package Remarks 24 pin plastic SSOP 24 MB3878PFV 22 MB3878 2 0244 PACKAGE DIMENSION 24 pin plastic SSOP Note1 Pins width and pins thickness include plating thickness FPT 24P M03 Note2 This dimension does not include resin protrusion 7 75 0 10 305 004 a 0 17 0 03 007 001 J 5 6040 10 7 60 0 20 220 004 299 008 INDEX Details of A part 1 25 010 1 Mounting height 049 298 g height I pw 0 25 010 S 0 65 026 008 0 13 005 0 50 0 20 0 10 0 10 003 TU 020 008 004 004 0 60 0 15 Stand off 024 006 0 10 004 2001 FUJITSU LIMITED F24018S c 3 4 Dimensions in mm inches 23 MB3878 EEE NN FUJITSU LIMITED Rights Reserved The contents of this document are subject to change without notice Customers are adv
12. 4P M03 FUJITSU MB3878 Continued Built in current detector amplifier with wide in phase input voltage range 0 V to Vcc In standby mode leave output voltage setting resistor open to prevent inefficient current loss e Built in standby current function 0 uA standard Built in soft start function Built in totem pole output stage supporting P channel MOS FETs devices PIN ASSIGNMENT INC2 OUTC2 INE2 INE2 FB2 VREF FB1 INE1 INE1 OUTC1 OUTD VIEW 24 03 INC2 GND CS VCC O OUT VH VCC RT INE3 CTL INC1 MB3878 PIN DESCRIPTION Descriptions Current detection amplifier Current Amp 2 input pin Current detection amplifier Current Amp 2 output pin Error amplifier Error Amp 2 non inverted input pin Error amplifier Error Amp 2 inverted input pin Error amplifier Error Amp 2 output pin Reference voltage output pin Error amplifier Error Amp 1 output pin Error amplifier Error Amp 1 inverted input pin 02 N Error amplifier Error Amp 3 non inverted input pin 4 Current detection amplifier Current 1 output pin With IC in standby mode this pin is left open to prevent loss of current through output voltage settin
13. Condenser OS Condenser Ceramics Condenser Ceramics Condenser Ceramics Condenser Ceramics Condenser Ceramics Condenser Ceramics Condenser Ceramics Condenser 22 uF 100 uF 2200 pF 0 1 uF 1500 pF 0 1 uF 10000 pF 0 1 uF 5600 pF 25 V 10 96 25 V 10 96 10 96 16 V 10 96 25V 10 96 16 V 10 96 Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor Resistor 0 033 Q 47 330 22 100 10 36 27 30 1 3 kO 1100 200 100 200 100 100 100 1 0 1 0 1 0 1 0 1 0 1 0 0 5 0 5 0 5 0 5 0 5 5 96 1 0 96 0 5 96 1 0 96 0 5 96 1 0 96 Note VISHAY SILICONIX VISHAY Intertechnology Inc MOTOROLA Motorola Japan Ltd SUMIDA SUMIDA ELECTRIC CO Ltd 21 MB3878 E USAGE PRECAUTIONS Printed circuit board ground lines should be set up with consideration for common impedance Take appropriate static electricity measures Containers for semiconductor materials should have anti static protection be made of conductive material After mounting printed circuit boards should be stored and shipped in conductive bags or containers Work platforms tools and instruments should be properly grounded Working personnel should be grounded with resistance of 250 to
14. L 5V S CTL 5V _ 10 lt VREF 0 mA c m a 8 gt 8 6 gt lt S 5 gt 4 o 9 P 2 5 oc 0 0 0 5 10 15 20 25 0 5 10 15 20 25 Power supply voltage Vcc V Power supply voltage Vcc V Reference voltage vs VREF load current Reference voltage vs ambient temperature 10 2 0 _ VCC 19 V gt S 15 CTL 5V 4 8 0 mA 1 0 gt lt 0 5 5 0 0 un 9 9 o 4 05 o o c c o o 1 0 m 2 2 1 5 oc 0 2 0 0 5 10 15 20 25 30 40 20 0 20 40 60 80 100 VREF load current mA Ambient temperature Ta C Reference voltage vs CTL pin voltage CTL pin current vs CTL pin voltage 25 C VCC 19 V p VREF 0 mA lt i E u gt gt 5 gt 5 o c 0 0 5 1 1 5 2 25 0 5 10 15 20 25 pin voltage Vcr V CTL pin voltage Vcr V Continued 10 MB3878 Triangular wave oscillator frequency Triangular wave oscillator fosc Hz 1M 100 k Triangular wave oscillator frequency vs timing resistor 10k 10k 100k 1M Timing resistor Rr Q Triangular wave oscillator frequency 340 T T VCC 19 V 330 CTL 5V 320 RT 47kQ 1 m 14 310 300 o 8 290
15. converter switching waveforms Soft start operating waveforms VIN 19 V fosc 277 9 Load BATT 20 Q 47 INE2 0 V Load 1 V OUTH V 20 20 15 15 CTL V 10 10 20 5 5 154 0 10 FB3 V 5 4 0 19 MB3878 APPLICATION EXAMPLE 2 aiqeisnipe si 1ndino WE LZ 0 AEL NIA jo peeq 440 MS IQON NO MS NN 49 00001 80 001 uleis S 3100 00 Pp eo _ IT 1 96600 9 LSH 400 Live io gj 4 3122 lt 110 gt 95500 12 Vo duoo WMd 0 0 NIA Jo depy OV 20 MB3878 PARTS LIST for APPLICATION EXAMPLE 2 COMPONENT Q1 Q2 Diode SPECIFICATION Si4435DY 2N7002 MBRS130LT3 VENDOR VISHAY SILICONIX VISHAY SILICONIX MOTOROLA PARTS No Si4435DY 2N7002 MBRS130LT3 Dual Op amp MB47358 Our Company MB47358 Coil 4 0 A 12 uH 38 SUMIDA CDRH124 12 uH OS
16. dback resistor and capacitor between the FB1 terminal pin 7 and INE terminal pin 8 providing stable phase compensation to the system 4 Error amplifier block Error Amp 2 This amplifier Error Amp 2 detects voltage pendency of the AC adaptor and outputs a PWM control signal In addition an arbitrary loop gain can be set by connecting a feedback resistor and capacitor from the FB2 terminal pin 5 to the INE2 terminal pin 4 of the error amplifier enabling stable phase compensation to the system 5 Error amplifier block Error Amp 3 This error amplifier Error Amp 3 detects the output voltage from the DC DC converter and outputs the PWM control signal External output voltage setting resistors can be connected to the error amplifier inverse input pin to set the desired level of output voltage from 1 cell to 4 cells In addition an arbitrary loop gain can be set by connecting a feedback resistor and capacitor from the FB3 terminal pin 15 to the INES terminal pin 16 of the error amplifier enabling stable phase compensation to the system Connecting a soft start capacitor to the CS terminal pin 22 prevents surge currents when the IC is turned on Using an error amplifier for soft start detection makes the soft start time constant independent of the output load 6 Current detector amplifier block Current Amp 1 The current detection amplifier Current Amp 1 detects a voltage drop which occurs between both ends of th
17. e output sense resistor Rs due to the flow of the charge current using the INC1 terminal pin 13 and terminal pin 12 Then it outputs the signal amplified by 25 times to the error amplifier Error Amp 1 at the next stage MB3878 _ 7 PWM comparator block PWM Comp The PWM comparator circuit is a voltage pulse width converter for controlling the output duty of the error amplifiers Error Amp 1 to Error Amp 3 depending on their output voltage The PWM comparator circuit compares the triangular wave generated by the triangular wave oscillator to the error amplifier output voltage and turns on the external output transistor during the interval in which the triangular wave voltage is lower than the error amplifier output voltage 8 Output block OUT The output circuit uses a totem pole configuration capable of driving an external P channel MOS FET The output L level sets the output amplitude to 5 V Typ using the voltage generated by the bias voltage block VH This results in increasing conversion efficiency and suppressing the withstand voltage of the connected external transistor in a wide range of input voltages 9 Control block CTL Setting the CTL terminal pin 14 low places the IC in the standby mode The supply current is 10 pA at maximum in the standby mode 10 Bias voltage block VH The bias voltage circuit outputs Vcc 5 V Typ as the minimum potential of the output circuit
18. g resistance Set CTL pin to H level and OUTD pin to L level Current detector amplifier Current Amp 1 input pin Current detector amplifier Current Amp 1 input pin Power supply control pin Setting the CTL pin low places the IC in the standby mode Error amplifier Error Amp 3 output pin Error amplifier Error Amp 3 inverted input pin Triangular wave oscillation frequency setting resistor connection pin Power supply pin for reference power supply and control circuit Power supply pin for FET drive circuit VH Vcc 5 V High side FET gate drive pin Output circuit power supply pin Soft start capacitor connection pin Ground pin Current detection amplifier Current Amp 2 input pin MB3878 BLOCK DIAGRAM 2 gt piu 62 2 gt ABSOLUTE MAXIMUM RAGINGS Parameter Power supply voltage Conditions MB3878 VCC VCC O Output current Peak output current Duty lt 5 t 1 fosc x Duty Power dissipation Ta lt 25 G Storage temperature The package is mounted on the dual sided epoxy board 10 cm x 10 cm WARNING Semiconductor devices can be permanently damaged by application of stress voltage current temperature etc in excess of absolu
19. ised to consult with FUJITSU sales representatives before ordering The information and circuit diagrams in this document are presented as examples of semiconductor device applications and are not intended to be incorporated in devices for actual use Also FUJITSU is unable to assume responsibility for infringement of any patent rights or other rights of third parties arising from the use of this information or circuit diagrams The products described in this document are designed developed and manufactured as contemplated for general use including without limitation ordinary industrial use general office use personal use and household use but are not designed developed and manufactured as contemplated 1 for use accompanying fatal risks or dangers that unless extremely high safety is secured could have a serious effect to the public and could lead directly to death personal injury severe physical damage or other loss i e nuclear reaction control in nuclear facility aircraft flight control air traffic control mass transport control medical life support system missile launch control in weapon system or 2 for use requiring extremely high reliability i e submersible repeater and artificial satellite Please note that Fujitsu will not be liable against you and or any third party for any claims or damages arising in connection with above mentioned uses of the products Any semiconductor devices have an inherent chance
20. of failure You must protect against injury damage or loss from such failures by incorporating safety design measures into your facility and equipment such as redundancy fire protection and prevention of over current levels and other abnormal operating conditions If any products described in this document represent goods or technologies subject to certain restrictions on export under the Foreign Exchange and Foreign Trade Law of Japan the prior authorization by Japanese government will be required for export of those products from Japan F0209 FUJITSU LIMITED Printed in Japan
21. pation vs ambient temperature 800 740 700 600 500 400 300 200 100 0 40 20 0 20 40 60 80 100 Ambient temperature Ta C VCC 19 v Error 1 77 Error Amp 2 VCC 19V Q gt T 12 55 V Amp 1 Current Amp 2 MB3878 4 5 n FUNCTIONAL DESCRIPTION 1 DC DC Converter Unit 1 Reference voltage block Ref The reference voltage generator uses the voltage supplied from the VCC terminal pin 18 to generate a tem perature compensated stable voltage 5 0V Typ used as the reference supply voltage for the IC s internal circuitry This pin can also be used to obtain a load current to a maximum of 1mA from the reference vollage VREF terminal pin 6 2 Triangular wave oscillator block OSC The triangular wave oscillator builds the capacitor for frequency setting into and generates the triangular wave oscillator waveform by connecting the frequency setting resistor with the RT terminal pin 17 The triangular wave is input to the PWM comparator on the IC 3 Error amplifier block Error Amp 1 This amplifier detects the output signal from the current detector ampifier Current amp 1 compares this to the INE1 terminal pin 9 and outputs a PWM control signal to be used in controlling the charging current In addition an arbitrary loop gain can be set up by connecting a fee
22. te maximum ratings Do not exceed these ratings RECOMMENDED OPERATING CONDITIONS Parameter Power supply voltage Conditions VCC VCC O Reference voltage output current VH pin output current Input voltage INE1 to INE3 INE1 INE2 INC1 INC2 INC1 INC2 OUTD pin output voltage OUTD pin output current CTL pin input voltage output current Peak output current Duty lt 5 t 1 fosc x Duty 450 Oscillator frequency 500 Timing resistor 130 Soft start capacitor 100000 VH pin capacitor 1 0 Reference voltage output capacitor Operating ambient temperature WARNING The recommended operating conditions are required in order to ensure the normal operation of the semiconductor device All of the device s electrical characteristics are warranted when the device is operated within these ranges Always use semiconductor devices within their recommended operating condition ranges Operation outside these ranges may adversely affect reliability and could result in device failure No warranty is made with respect to uses operating conditions or combinations not represented on the data sheet Users considering application outside the listed conditions are advised to contact their FUJITSU representatives beforehand MB3878 ELECTRICAL CHARACTERISTICS Parameter Reference voltage block Ref Output voltage
Download Pdf Manuals
Related Search