MAX894L Datasheet, PDF (1/8 Pages) Maxim Integrated Products – Dual, Current-Limited, High-Side P-Channel Switches with Thermal Shutdown

19-1153; Rev 0; 10/96
Dual, Current-Limited, High-Side P-Channel
Switches with Thermal Shutdown
_______________General Description
The MAX894L/MAX895L smart, dual, low-voltage,
P-channel, MOSFET power switches are intended for
high-side load-switching applications. These switches
operate with inputs from +2.7V to +5.5V, making them
ideal for both 3V and 5V systems. Internal current-
limiting circuitry protects the input supply against
overload. Thermal-overload protection limits power dis-
sipation and junction temperature.
The MAX894L/MAX895L’s maximum current limits are
500mA and 250mA, respectively. The current limit
through the switches is programmed with resistors from
SET A/SET B to ground. When the switches are on, the
quiescent supply current is a low 16µA. When the
switches are off, the supply current decreases to 0.1µA.
The MAX894L/MAX895L are available in an 8-pin SO
package.
________________________Applications
PCMCIA Slots
Access Bus Slots
Portable Equipment
____________________________Features
o +2.7V to +5.5V Input Range
o Programmable Current Limits
o Low Supply Current:
16µA I_Q at V_IN = 3.3V
0.1µA with Switch Off
o Thermal Shutdown
______________Ordering Information
PART*
TEMP.
RANGE
PIN-
CURRENT
PACKAGE LIMIT
MAX894LC/D 0°C to +70°C Dice**
500mA
MAX894LESA -40°C to +85°C 8 SO
500mA
MAX895LC/D 0°C to +70°C Dice**
250mA
MAX895LESA -40°C to +85°C 8 SO
250mA
*To order these units in tape and reel, add (-T) to the end of the
part number.
**Dice are tested at T_A = +25°C.
__________Typical Operating Circuit __________________Pin Configuration
OUTPUT A
0.1µF
OUTPUT B
0.1µF
R_{SET A}
ON/OFF
OUT A
ONB
OUT B
SET A
MAX894L
MAX895L
IN
SET B
ONA
GND
ON/OFF
INPUT
1µF
R_{SET B}
TOP VIEW
OUT A 1
OUT B 2
SET A 3
ONA 4
MAX894L
MAX895L
SO
8 ONB
7 IN
6 SET B
5 GND
________________________________________________________________ Maxim Integrated Products 1
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