LTC3250 datasheet(5/12 Pages) LINER

No de pièce	LTC3250

Description	High Efficiency, Low Noise, Inductorless Step-Down DC/DC Converter

PDF	12 Pages

Scroll/Zoom	100%

Fabricant	LINER [Linear Technology]

Site Internet	http://www.linear.com

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5 / 12 page

LTC3250-1.5/LTC3250-1.2

3250fa

VIN (Pin 1): Input Supply Voltage. Bypass VIN with a ≥1µF

low ESR ceramic capacitor.

GND (Pin 2): Ground. Connect to a ground plane for best

performance.

SHDN (Pin 3): Active Low Shutdown Input. A low voltage

on SHDN disables the LTC3250-1.5/LTC3250-1.2. SHDN

must not be allowed to float.

C– (Pin 4): Flying Capacitor Negative Terminal

VOUT (Pin 5): Regulated Output Voltage. VOUT is discon-

nected from VIN during shutdown. Bypass VOUT with a

≥4.7µF low ESR ceramic capacitor (2.5µF min, ESR

<100m

Ω).

C+ (Pin 6): Flying Capacitor Positive Terminal.

PI FU CTIO S

BLOCK DIAGRA

3250 BD

THERMAL

SHUTDOWN

(>160

°C)

SWITCH

CONTROL

AND

SOFT-START

1.5MHz

OSCILLATOR

CHARGE

PUMP

BURST

DETECT

CIRCUIT

GND

SHDN

VIN

C+

C–

VOUT

LTC3250-1.5/

LTC3250-1.2

VREF

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