SC1112 データシートの表示（PDF） - Semtech Corporation

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SC1112

Triple Low Dropout Regulator Controllers

Semtech Corporation 

SC1112

POWER MANAGEMENT

Pin Descriptions

Pin # Pin Name Pin Function

1

5VSTBY 5V Standby input, supplies power for Ref, Charge Pump, Oscillator and FET controllers.

2

PWRGD Open collector Power Good Flag for VTT output.

3

DELAY

A capacitor from this pin to GND will program the delay for the Power Good Flag of VTT

output and the glitch immunity time.

4

VTTSEL TTL signal that programs the VTT output voltage: VTTSEL = LOW, VTT = 1.2XV

VTTSEL = HIGH, VTT = 1.5V

5

AGPSEL TTL signal that programs the AGP output voltage: AGPSEL = LOW, AGP = 1.5V

AGPSEL = HIGH, AGP = 3.3V

6

ADJGATE Gate drive output for AGP.

7

ADJSEN Sense input for ADJ.

8

CAP-

Negative connection to boost capacitor.

9

CAP+

Positive connection to boost capacitor.

10

FC

Filter capacitor for the internal charge pump should be connected from this pin to GND.

11

AGPSEN Sense input for AGP.

12

AGPGATE Gate drive output for AGP.

13

VTTSEN Sense input for VTT.

14

VTTGATE Gate drive output for VTT.

15

VTTIN

Short circuit sense line connected to the 3.3Vin.

16

GND

Ground.

NOTE: (1) All logic level inputs and outputs are open collector TTL compatible.

 2006 Semtech Corp.

7

www.semtech.com

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