NCV866952D250R2G datasheet(2/14 Pages) ONSEMI

Part #	NCV866952D250R2G

Description	Very Low Iq 150 mA LDO Regulator with Reset and Early Warning

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Manufacturer	ONSEMI [ON Semiconductor]

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NCV8669

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2

Driver with

Current

Limit

Thermal

Shutdown

Vout

GND

TIMING

CIRCUIT

and

RESET

OUTPUT

DRIVER

and

SENSE

OUTPUT

DRIVER

Vin

RO

SI

SO

DT

Vref

*

Figure 2. Simplified Block Diagram

*Pull−down Resistor (typ 150 kW) active only in Reset State.

Vref

RSI1

RSI2

GND

RO

GND

114

GND

SO−14

DT

NC

SO

SI

Vout

Vin

Figure 3. Pin Connections

(Top View)

PIN FUNCTION DESCRIPTION

Pin No.

SO−14

Pin Name

Description

1

NC

Not Connected.

2

DT

Reset Delay Time Select. Short to GND or connect to Vout to select time.

3, 4, 5, 6,

10, 11,

12

GND

Power Supply Ground.

7

RO

Reset Output. 30 kW internal Pull−Up resistor connected to Vout. RO goes Low when Vout drops by more

than 7% (typ.) from its nominal value.

8

SO

Early Warning Output. 30 kW internal Pull−Up resistor connected to Vout. It can be used to provide early

warning of an impending reset condition. Leave open if not used.

9

Vout

Regulated Output Voltage. Connect 2.2 mF capacitor with ESR < 100 W to ground.

13

Vin

Positive Power Supply Input. Connect 0.1 mF capacitor to ground.

14

SI

Early Warning Adjust Input; connect RSI_ext against GND to adjust Input Voltage Early Warning

Threshold or leave unconnected. See Electrical Characteristics Table and Application Information sec-

tions for more information.

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NCV866952D250R2G Datasheet(PDF) 2 Page - ON Semiconductor

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