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TPS6734IP Datasheet(PDF) 3 Page - Texas Instruments |
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TPS6734IP Datasheet(HTML) 3 Page - Texas Instruments |
3 / 19 page TPS6734I FIXED 12-V 120-mA BOOST-CONVERTER SUPPLY SLVS127A – AUGUST 1995 – REVISED JANUARY 1999 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 functional block diagram EN 1 EN 7 EN FB _ + 4 COMP Voltage Reference x3.5 SS Clamp Error Amplifier PWM Comparator R S 170-kHz Oscillator VCC Power Switch Drive Latch Σ 2 REF 3 SS x6 Current Sense Amplifier Overcurrent Comparator Driver VCC OUT GND 8 6 5 + 1 M Ω – Q Terminal Functions TERMINAL DESCRIPTION NAME NO. DESCRIPTION EN 1 Enable. EN ≥ 2 V turns on the TPS6734. EN ≤ 0.4 V turns it off and reduces the supply current to 3 µA max. REF 2 1.22-V reference voltage output. REF can source 100 µA for external loads. SS 3 Soft Start. A capacitor between SS and GND brings the output voltage up slowly at power-up. COMP 4 Compensation connection. A 0.001- µF capacitor between COMP and FB stabilizes the feedback loop. GND 5 Ground OUT 6 N-channel MOSFET drain connection FB 7 Feedback voltage. FB is connected to the converter output for the feedback loop. VCC 8 Supply voltage input |
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