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MAX894LESAMAXIMN/a1711avaiDual, Current-Limited, High-Side P-Channel Switches with Thermal Shutdown
MAX894LESAMAXN/a685avaiDual, Current-Limited, High-Side P-Channel Switches with Thermal Shutdown
MAX895LESAMAXIMN/a2392avaiDual, Current-Limited, High-Side P-Channel Switches with Thermal Shutdown
MAX895LESAMAXN/a172avaiDual, Current-Limited, High-Side P-Channel Switches with Thermal Shutdown


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MAX894LESA-MAX895LESA
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 16mA. When the
switches are off, the supply current decreases to 0.1mA.
The MAX894L/MAX895L are available in an 8-pin SO
package.
________________________Applications

PCMCIA Slots
Access Bus Slots
Portable Equipment
____________________________Features
+2.7V to +5.5V Input RangeProgrammable Current LimitsLow Supply Current:
16mA IQat VIN= 3.3V
0.1mA with Switch Off
Thermal Shutdown
MAX894L/MAX895L
Dual, Current-Limited, High-Side P-Channel
Switches with Thermal Shutdown
__________________Pin Configuration
__________Typical Operating Circuit

19-1153; Rev 0; 10/96
MAX894L/MAX895L
Dual, Current-Limited, High-Side P-Channel
Switches with Thermal Shutdown
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS

(VIN= 3V, TA= 0°C to +85°C,unless otherwise noted. Typical values are at TA= +25°C.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
IN to GND...................................................................-0.3V to 6V
ONA, ONBto GND.....................................................-0.3V to 6V
SET A, SET B, OUT A, OUT B to GND........-0.3V to (VIN+ 0.3V)
Maximum Continuous Switch Current
MAX894L..........................................................................0.75A
MAX895L........................................................................0.375A
Continuous Power Dissipation (TA= +70°C)
SO (derate 5.88mW/°C above +70°C).......................471mW
Operating Temperature Range
MAX89_LESA.................................................-40°C to +85°C
Storage Temperature Range...............................-65°C to+150°C
Lead Temperature (soldering, 10sec)..............................+300°C
Note 1:
Tested with IOUT= 50mA for the MAX894L and 25mA for the MAX895L, and VSETraised until VIN- VOUT‡0.8V.
MAX894L/MAX895L
Dual, Current-Limited, High-Side P-Channel
Switches with Thermal Shutdown
ELECTRICAL CHARACTERISTICS (Note 2)

(VIN= 3V, TA= -40°C to +85°C,unless otherwise noted. Typical values are at TA= +25°C.)
Note 2:
Specifications to -40°C are guaranteed by design, not production tested.
MAX894L/MAX895L
Dual, Current-Limited, High-Side P-Channel
Switches with Thermal Shutdown
__________________________________________Typical Operating Characteristics

(Typical Operating Circuit, TA= +25°C, unless otherwise noted.)
QUIESCENT CURRENT
vs. INPUT VOLTAGE

MAX894 TOC-01
INPUT VOLTAGE (V)
QUIESCENT CURRENT (6
QUIESCENT CURRENT
vs. TEMPERATURE
MAX894 TOC-02
TEMPERATURE (°C)
QUIESCENT CURRENT (
OFF-SUPPLY CURRENT
vs. TEMPERATURE
MAX894 TOC-03
TEMPERATURE (°C)
OFF-SUPPLY CURRENT (
OFF-SWITCH CURRENT
vs. TEMPERATURE
MAX894 TOC-04
TEMPERATURE (°C)
OFF-SWITCH CURRENT (
NORMALIZED OUTPUT CURRENT
vs. OUTPUT VOLTAGE
MAX894 TOC-06A
OUTPUT VOLTAGE (V)
NORMALIZED OUTPUT CURRENT
NORMALIZED ON-RESISTANCE
vs. TEMPERATURE
MAX894 TOC-05
TEMPERATURE (°C)
NORMALIZED R
TURN-ON TIME
vs. TEMPERATURE
MAX894 TOC-07
TEMPERATURE (°C)
tON
TURN-OFF TIME
vs. TEMPERATURE
MAX894 TOC-08
TEMPERATURE (°C)
tOFF (
-2060100
MAX894L/MAX895L
Dual, Current-Limited, High-Side P-Channel
Switches with Thermal Shutdown
____________________________Typical Operating Characteristics (continued)

(Typical Operating Circuit, TA= +25°C, unless otherwise noted.)
MAX894L/MAX895L
Dual, Current-Limited, High-Side P-Channel
Switches with Thermal Shutdown
______________________________________________________________Pin Description

Figure 1. Functional Diagram
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