LTC2903-1 datasheet(7/16 Pages) LINER

Part #	LTC2903-1

Description	Precision Quad Supply Monitor in 6-Lead SOT-23

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Manufacturer	LINER [Linear Technology]

Direct Link	http://www.linear.com

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7

LTC2903-1

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V1 (Pin 1): Voltage Input 1. Internal VCC is generated from

the greater voltage on the V1 and V2 inputs. VCC = V1 for

options D1 and E1. Bypass this pin to ground with a 0.1µF

(or greater) capacitor.

GND (Pin 2): Ground.

V2 (Pin 3): Voltage Input 2. Internal VCC is generated from

the greater voltage on the V1 and V2 inputs. VCC = V1 for

options D1 and E1. For option A1, B1, C1 bypass this pin

to ground with a 0.1µF (or greater) capacitor. V2 is an

adjustable input for options D1 and E1. See Table 1b for

recommended ADJ resistor values.

V3 (Pin 4): Voltage Input 3. This input assists the RST pull-

down circuitry below 1V (for options A1, B1 and C1 only).

V3 is an adjustable input for options D1 and E1. See Table

1b for recommended ADJ resistor values.

V4 (Pin 5): Voltage Input 4. Table 1 lists the recommended

ADJ resistor values for options A1, B1 and C1. See Table

1b for options D1 and E1.

RST (Pin 6): Reset Logic Output. Pulls low when any volt-

age input is below reset threshold and held low for 200ms

after all voltage inputs exceed threshold. The pin contains

a weak pull-up to V2 (V1 for options D1 and E1). Use an

external pull-up for faster rise times or output voltages

greater than V2 (V1 for options D1 and E1).

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LTC2903-1 Datasheet(PDF) 7 Page - Linear Technology

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