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NCV8667

150 mA LDO Regulator with Enable, Reset and Early Warning

ON Semiconductor 

NCV8667

1

Vin

SI

EN

DT

SO−8

8

Vout

SO

RO

GND

1

EN

DT

GND

GND

GND

GND

RO

14

SI

Vin

GND

GND

GND

Vout

SO

Figure 5. Pin Connections

(Top View)

SO−14

PIN FUNCTION DESCRIPTION

Pin No.

SO−8

Pin No.

SO−14

Pin Name

3

1

EN

4

2

DT

5

3, 4, 5, 6,

GND

10, 11, 12

6

7

RO

7

8

SO

8

9

Vout

1

13

Vin

2

14

SI

Description

Enable Input; low level disables the IC.

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

Power Supply Ground.

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

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.

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

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

Adjustable Early Warning Threshold: Sense Input; If not used, connect to Vout.

Preset Early Warning Threshold: 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 sections for more information.

http://onsemi.com

4

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