ADM1072
ABSOLUT E MAXIMUM RAT INGS*
(T A = +25°C unless otherwise noted)
16 OP2
OP1
MAIN_IN
MAIN_IN
OP1
1
2
3
4
5
6
7
8
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 (VIN + 0.3V)
Maximum Switch Current
Full Power Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1A
Standby Power Mode . . . . . . . . . . . . . . . . . . . . . . . . 200mA
Continuous Power Dissipation (T A = +70oC) . . . . . 667mW
QSOP (derate 8.3mW/oC above +70oC)
15
14
MAIN_IN
MAIN_IN
13 OP2
ADM 1072
TOP VIEW
12 STBY_IN
11 O N1
STBY_IN
FLT1
(Not to Scale)
O N2
10
9
FLT2
Operating T emperature Range
STBY
GND
Industrial (A Version) . . . . . . . . . . . . . . . –40°C to +85°C
Storage T emperature Range . . . . . . . . . . . –65°C to +150°C
Lead T emperature (Soldering, 10 sec) . . . . . . . . . . . +300°C
Pin Configuration
*T his 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.
T H ERM AL CH ARACT ERIST ICS
16-Pin QSOP Package:
qJA = 105°C/Watt, qJC = 40°C/Watt
ORDERING GUIDE
T em perature
Range
-40°C to +85°C
P ackage
D escription
P ackage
O ption
M odel
ADM1072ARQ
16-Pin QSOP
RQ-16
Package
PIN FUNCT ION DESCRIPT ION
Pin
Mnem onic
Function
2, 3, 14, 15
MAIN_IN
ST BY_IN
OP1
Input to MAIN P-channel MOSFET source (both channels). Bypass MAIN_IN with a
22µF capacitor to ground.
5, 12
1, 4
13, 16
6
Input to Standby P-channel MOSFET source (both channels) and supply to chip
circuitry. Bypass ST BY_IN with a 4.7µF capacitor to ground.
Output from channel 1, P-channel MOSFET drains. Bypass OP1 with a 120µF capacitor
to ground.
OP2
Output from channel 2, P-channel MOSFET drains. Bypass OP2 with a 120µF capacitor
to ground.
FLT1
Open-Drain Digital Output. FLT1 goes low when the channel 1 current limit is
exceeded for 10mS or the die temperature exceeds +150oC. During startup, 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 +150oC. During startup, FLT2
remains low for the turn-on time.
8
9
GND
Ground pin for all chip circuits.
ST BY
Digital Input. Active high standby mode input. ST BY = 0 sets normal operating mode
with 500mA current limit. ST BY = 1 sets standby mode with 100mA current limit.
10
11
ON2
ON1
Digital Input. Active-low switch enable for channel 2 (logic 0 turns the switch on).
Digital Input. Active-low switch enable for channel 1 (logic 0 turns the switch on).
Rev. PrE 1/02
–3–