|
If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
Datasheet File OCR Text: |
FUJITSU SEMICONDUCTOR DATA SHEET DS04-27202-6E ASSP BIPOLAR SWITCHING REGULATOR CONTROLLER MB3769A DESCRIPTION The Fujitsu MB3769A is a pulse-width-modulation controller which is applied to fixed frequency pulse modulation technique. The MB3769A contains wide band width Op-Amp and high speed comparator to construct very high speed switching regulator system up to 700 kHz. Output is suitable for power MOS FET drive owing to adoption of totem pole output. The MB3769A provides stand-by mode at low voltage power supply when it is applied in primary control system. FEATURES * * * * * * * * * * * * * * High frequency oscillator (f = 1 kHz to 700 kHz) On-chip wide band frequency operation amplifier (BW = 8 MHz Typ) On-chip high speed comparator (td = 120 ns Typ) Internal reference voltage generator provides a stable reference supply (5 V 2%) Low power dissipation (1.5 mA Typ at standby mode, 8 mA Typ at operating mode) Output current 100 mA ( 600 mA at peak) High speed switching operation (tr = 60 ns, tf = 30 ns, CL = 1000 pF Typ) Adjustable Dead-time On-chip soft start and quick shut down functions Internal circuitry prohibits double pulse at dynamic current limit operation Under voltage lock out function (OFF to ON: 10 V Typ, ON to OFF: 8 V Typ) On-chip output shut down circuit with latch function at over voltage On-chip Zener diode (15 V) One type of package (SOP-16pin : 1 type) APPLICATIONS * Power supply module * Industrial Equipment * AC/DC Converter etc. Copyright(c)1994-2006 FUJITSU LIMITED All rights reserved MB3769A PIN ASSIGNMENT (TOP VIEW) +IN (OP) -IN (OP) FB DTC CT RT GND VL 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 +IN (C) -IN (C) VREF OVP VCC VZ VH OUT (FPT-16P-M06) 2 MB3769A BLOCK DIAGRAM Fig. 1 - MB3769A Block Diagram Over Current Detection Comparator -IN (C) 15 S +IN (C) 16 + R 1.85 V VREF + + + PWM + Comp. + STB STB FB +IN (OP) 3 1 8 VL Q 10 VH + 1.8 V DTC 4 9 OUT -IN (OP) 2 13 + Error Amp Over Voltage Detector S 2.5 V Power off 1.5 V to 3.5 V Triangle Wave Oscillator R Q OVP + CT RT V CC 5 6 12 + 8/10 V STB - (2.5 V) 15.4 V VZ 11 30 k GND 7 Reference Regulator 5.0 + 0.1 V + 14 VREF 3 MB3769A ABSOLUTE MAXIMUM RATINGS Parameter Power Supply Voltage Output Current Operation Amp Input Voltage Power Dissipation : SOP Storage Temperature *1 : Duty 5% *2 : Ta = + 25 C, SOP package is mounted on the epoxy board. (4 cm x 4 cm x 0.15 cm) WARNING: Semiconductor devices can be permanently damaged by application of stress (voltage, current, temperature, etc.) in excess of absolute maximum ratings. Do not exceed these ratings. Symbol VCC IOUT Vin (OP) PD TSTG Rating Min -55 Max 20 120 (660* ) VCC + 0.3 ( 20) 620*2 +125 1 Unit V mA V mW C 4 MB3769A RECOMMENDED OPERATING CONDITIONS Parameter Power Supply Voltage Output Current (DC) Output Current (Peak) Operation Amp Input voltage FB Sink Current FB Source Current Comparator Input Voltage Reference Section Output Current Timing Resistor Timing Capacitor Oscillator Frequency Zener Current Operating Ambient Temperature: SOP Symbol VCC IOUT IOUT PEAK VINOP ISINK ISOURCE VINC + - SOP package Min 12 -100 -600 -0.2 -0.3 -0.3 9 100 1 -30 Typ 15 0 to VREF 0 to 3 0 to 2 2 18 680 100 +25 Max 18 +100 +600 VCC-3 0.3 2 VCC 2.5 10 50 10 5 +75 6 Unit V mA mA V mA mA V V mA k pF kHz mA C VINC RT CT IREF fOSC IZ Ta 700 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. 5 MB3769A ELECTRICAL CHARACTERISTICS (VCC=15V, Ta=+25C) Parameter Output Voltage Input Regulation Reference Load Regulation Section Temp. Stability Short Circuit Output Current Oscillator Frequency Oscillator Section Voltage Stability Temp. Stability Input Bias Current Max. Duty Cycle Duty Cycle Set Dead -time Control Input Section Threshold Voltage 0% Duty Cycle Max. Duty Cycle Symbol VREF VRIN VRLD VRTEMP ISC fOSC fOSCIN fOSC /T ID Dmax Dset VDO VDM VDH VIO (OP) IIO (OP) IIR (OP) VCM (OP) Av (OP) BW SR CMR VOH VOL Condition IREF = 1 mA 12 V VCC 18 V 1 mA IREF 10 mA -30 C Ta +85 C VREF = 0 V RT = 18 k CT = 680 pF 12 V VCC 18 V -30 C Ta +85 C Value Min 4.9 15 90 75 45 1.55 4.5 -1 -0.2 70 65 4.0 - Typ 5.0 2 -1 200 40 100 0.03 2 2 80 50 3.5 1.85 2 30 -0.3 90 8 6 80 4.6 0.1 Max 5.1 15 -15 750 110 10 85 55 3.8 10 300 VCC -3 0.5 Unit V mV mV V/ C mA kHz % % A % % V V V mV nA A V dB MHz V/s dB V V Vd = 1.5 V Vd = 0.5 VREF VCC = 7 V, IDTC = -0.3 mA V3 = 2.5 V V3 = 2.5 V V3 = 2.5 V 12 V VCC 18 V 0.5 V V3 4 V Av = 0 dB RL = 10 k, Av = 0 dB VIN = 0 V to 10 V I3 = -2 mA I3 = 0.3 mA Discharge Voltage Input Offset Voltage Input Offset Current Input Bias Current Common-Mode Input Voltage Error Amplifier Section Voltage Gain Band Width Slew Rate Common-Mode Rejection Rate "H" Level Output Voltage "L" Level Output Voltage (Continued) 6 MB3769A (Continued) (VCC=15V, Ta=+25C) Parameter Input Offset Voltage Input Bias Current Current Comparator Common-Mode Input Voltage Voltage Gain Response Time PWM Comparator Section 0% Duty Cycle Max Duty Cycle "H" Level Output Voltage "L" Level Output Voltage Output Section Rise Time Fall Time Over Voltage Detector Under Voltage Out Stop Threshold Voltage Input Current VCC Reset Off to On On to Off Standby * Supply Current Operating Zener Voltage Zener Current Symbol VIO (C) IIB (C) VCM (C) AV (C) td VOPO VOPM VH VL tr tf VOVP IIOVP VCC RST VTHH VTHL ISTB ICC VZ IZ Condition VIN = 1 V VIN = 1 V 50 mV over drive RT = 18 k CT = 680 pF IOUT = -100 mA IOUT = 100 mA CL = 1000 pF, RL = CL = 1000 pF, RL = VIN = 0 V RT = 18 k 4 pin Open RT = 18 k IZ = 1 mA V11-7 = 1 V Value Min -5 0 1.55 12.5 2.4 -1.0 2.0 9.2 7.2 - Typ 5 -1 200 120 3.5 1.85 13.5 1.1 60 30 2.5 -0.2 3.0 10.0 8.0 1.5 8.0 15.4 0.03 Max 15 2.5 250 3.8 1.3 120 80 2.6 4.5 10.8 8.8 2.0 12.0 - Unit mV A V V/V ns V V V V ns ns V A V V V mA mA V mA * : VCC = 8V 7 MB3769A Fig. 2 - MB3769A Test Circuit 1.0 V 15.0 V OUTPUT 10 k 16 +IN (C) COMP in +IN (OP) 1 -IN (OP) 2 FB 3 DTC 4 680 pF VFB VDTC 15 -IN (C) 14 VREF 13 OVP 12 VCC MB3769A CT 5 18 k RT 6 GND 7 VL 8 11 VZ 10 VH 9 OUT 1000 pF TEST INPUT |
Price & Availability of MB3769APF |
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
[Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |