bd9763fvm ROHM Co. Ltd., bd9763fvm Datasheet
bd9763fvm
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bd9763fvm Summary of contents
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... High-efficiency Switching Regulator (Controller Type) BD9763FVM ●Description BD9763FVM is a 1-channel high efficiency step-up switching regulator possible to choose small application space due to its high-speed operation (Max switching frequency 1.2MHz) ●Features 1) Build-in under voltage lock out circuit. 2) High accuracy reference voltage (2.5V±1.0%) 3) Establish maximum duty cycle internally ...
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Electrical characteristics (Unless otherwise specified, Ta=25℃, Vcc=7.0V) Parameter 【Oscillator】 Oscillating frequency Frequency tolerance Swing voltage 【Stand-by, Soft start】 CTL/SS pin source current CTL/SS pin clamp voltage CTL threshold voltage 【PWM comparator】 0% threshold voltage Maximum duty cycle 【Error amplifier】 ...
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Ta=25℃) VREF voltage vs. Ambient temperature 2.53 2.52 2.51 2.5 2.49 2.48 2.47 -60 -40 - Ambient temperature [℃] Fig.1 VREF voltage – Ambient temperature Oscillating frequency vs. Ambient temperature 650 640 RT=24kΩ 630 620 610 600 590 580 570 560 ...
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VCC 1pin 2pin OUT 3pin GND 4pin VREF ●Block diagram VCC VREF 1 4 U.V.L.O Vref INV 5 Error Clamper 1.0V Amp VREF Vdt FB 6 T.S.D 7 CTL/SS RT 8pin CTL/SS 7pin FB 6pin INV 5pin ●Pin ...
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REFERENCE(VREF) BLOCK This voltage reference block generates 2.5V internal reference voltage. ・OSCILLATOR BLOCK Oscillator block sets the oscillating frequency adjusted by an external resistance in RT pin. The oscillating frequency can be set within a range of ...
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Output inductor It is recommended to use an inductor which satisfies the following rating current (the following value of current), and also has low DCR. The shield type inductor is preferable. I peak = Io･(Vo/VIN) / ...
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Setting the output voltage The output voltage is calculated by the following equation VINVth･(R1+R2)/R2 [V] R1,R2 : Resistor divider network VINth : Error amp threshold voltage (typ.1V) (but Vo<VIN･5 because of MAXDUTY Min=80%) (7) CTL/SS setting the ...
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VOUT Lay out by the shortest pattern. VCC Short GNDs at one point as this figure. VCC OUT C1 C1 GND Capacitor terminals have to be close enough to terminals of VCC and GND. ...
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Equivalent Circuit OUT (2) 250k INV (5) VCC INV GND CTL/SS (7) VCC 20k CTL/SS GND 1.67k VCC OUT GND 20p 200k 5k 500k Fig.11 9/12 VREF (4) VCC 50k VREF 200k 193k GND FB (6) VCC FB GND ...
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Notes (1) Absolute maximum ratings Use of the IC in excess of absolute maximum ratings such as the applied voltage or operating temperature range may result in IC deterioration or damage. Assumptions should not be made regarding the state ...
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IC pin input This monolithic IC contains P + isolation and PCB layers between adjacent elements in order to keep them isolated. P/N junctions are formed at the intersection of these P layers with the N layers of other ...
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Model Name When Ordering ROHM Model name MSOP8 <Dimension> Part number <Tape and Reel information> Tape Embossed carrier tape Quantity 3000pcs Direction TR of feed (The direction is the 1pin of ...
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Appendix No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product ...