ADM1072

–3–

Rev. PrE 1/02

Pin Configuration

ABSOLUTE MAXIMUM RATINGS*

MAIN_IN to GND . . . . . . . . . . . . . . . . . . . . . . –0.3V to +6V

ON1,ON1,FLT1, FLT2 to GND . . . . . . . . . . . –0.3V to +6V

OP1,OP2 to GND . . . . . . . . . . . . . . . . +0.3 V to (V

Maximum Switch Current

Full Power Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1A

Standby Power Mode . . . . . . . . . . . . . . . . . . . . . . . . 200mA

Continuous Power Dissipation (TA = +70

QSOP (derate 8.3mW/

Operating Temperature Range

Industrial (A Version) . . . . . . . . . . . . . . . –40°C to +85°C

Storage Temperature Range . . . . . . . . . . . –65°C to +150°C

Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . +300°C

*This is a stress rating only and functional operation of the device at these or any

other conditions above those indicated in the operation sections of this speci-

fication is not implied. Exposure to absolute maximum rating conditions for

extended periods of time may affect reliability.

PIN FUNCTION DESCRIPTION

Pin

Mnemonic

Function

2, 3, 14, 15

MAIN_IN

Input to MAIN P-channel MOSFET source (both channels). Bypass MAIN_IN with a

22µF capacitor to ground.

5, 12

STBY_IN

Input to Standby P-channel MOSFET source (both channels) and supply to chip

circuitry. Bypass STBY_IN with a 4.7µF capacitor to ground.

1, 4

OP1

Output from channel 1, P-channel MOSFET drains. Bypass OP1 with a 120µF capacitor

to ground.

13, 16

OP2

Output from channel 2, P-channel MOSFET drains. Bypass OP2 with a 120µF capacitor

to ground.

6

FLT1

Open-Drain Digital Output.

FLT1 goes low when the channel 1 current limit is

exceeded for 10mS or the die temperature exceeds +150

FLT1

remains low for the turn-on time.

7

FLT2

Open-Drain Digital Output.

FLT2 goes low when the channel 2 current limit is

exceeded for 10mS or the die temperature exceeds +150

FLT2

remains low for the turn-on time.

8

GND

Ground pin for all chip circuits.

9

STBY

Digital Input. Active high standby mode input. STBY = 0 sets normal operating mode

with 500mA current limit. STBY = 1 sets standby mode with 100mA current limit.

10

ON2

Digital Input. Active-low switch enable for channel 2 (logic 0 turns the switch on).

11

ON1

Digital Input. Active-low switch enable for channel 1 (logic 0 turns the switch on).

THERMAL CHARACTERISTICS

16-Pin QSOP Package:

ORDERING GUIDE

Temperature

Package

Package

Model

Range

Description

Option

ADM1072ARQ

-40°C to +85°C

16-Pin QSOP

RQ-16

Package

AD M 1 0 7 2

T O P VIEW

(No t to S cale)

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

OP 1

MAIN _IN

MAIN _IN

OP 1

ST BY _IN

FLT1

FLT2

GND

OP 2

MAIN _IN

MAIN _IN

OP 2

ST BY _IN

ON 1

ON 2

ST BY