LTC3252 datasheet(5/12 Pages) LINER

Numer części	LTC3252

Szczegółowy opis	Dual, Low Noise, Inductorless Step-Down DC/DC Converter

PDF	12 Pages

Scroll/Zoom	100%

Producent	LINER [Linear Technology]

Strona internetowa	http://www.linear.com

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5 / 12 page

LTC3252

3252f

BLOCK DIGRAM

SI PLIFIED

–

CHARGE

PUMP 2

BURST

DETECT

CIRCUIT

–

CHARGE

PUMP 1

SPREAD SPECTRUM

OSCILLATOR

SWITCH

CONTROL

OVERTEMPERATURE

C1+

OUT1

C1–

C2+

OUT2

C2–

12 FB2

GND

3252 SBD

1 FB1

VIN

EN1

EN2

PI FU CTIO S

C2– (Pin 8): Flying Capacitor 2 Negative Terminal (C2).

OUT2 (Pin 9): Regulated Output Voltage 2. OUT2 is

disconnected from VIN when in shutdown. Bypass OUT2

with a low ESR ceramic capacitor to GND (CO2). See

Output Capacitor Selection section for size requirements.

C2+ (Pin 10): Flying Capacitor 2 Positive Terminal (C2).

EN2 (Pin 11): Input Enable Pin 2. When EN2 is high, OUT2

is enabled. When EN2 is low OUT2 is shut down.

FB2 (Pin 12): Feedback Input Pin 2. An output divider

should be connected from OUT2 to FB2 to program the

output voltage.

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