DS1640S Maxim Integrated Products, DS1640S Datasheet
DS1640S
Manufacturer Part Number
DS1640S
Description
IC PC POWER FET 16-SOIC
Manufacturer
Maxim Integrated Products
Type
General Purposer
Datasheet
1.DS1640S.pdf
(4 pages)
Specifications of DS1640S
Number Of Outputs
4
Internal Switch(s)
Yes
Current Limit
300mA
Voltage - Input
3 ~ 5.5 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
16-SOIC (0.300", 7.5mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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FEATURES
DESCRIPTION
The DS1640 contains four P channel power MOS FETs designed as switches to conserve power in
personal computer systems. When connected to power management control units, power consuming
devices like disk drives or display panel backlights can be routinely shut down to conserve battery or
main power supply energy. The P channel power MOS FETs are individually controlled and are capable
of handling 300 mA each continuously with less than 0.2 volts drop from input to output. The device
requires a +3 Û +5 volt power supply input which is used to power internal logic and to operate a gate
bias generator.
www.dalsemi.com
Contains four P channel power FET switches
that can each supply over 300 mA @ 0.2 volts
drop
Controlled directly from CMOS or TTL level
signals
Fast switching time of less than 10 s at rated
supply current
16-pin DIP or 16-pin SOIC surface mount
package
Positive logic signal turns each FET on and
ground or low level signal turns each FET off
Off condition allows less than 50 nA of
current flow
Low control gate capacitance of less than 5
pF
FET gates can either follow inputs or be
latched
Designed for use with power supplies ranging
from +3 to +5 volts
1 of 4
Personal Computer Power FET
PIN ASSIGNMENT
PIN DESCRIPTION
V
GND
IN1-IN4
OUT1-OUT4
GATE1-GATE4
NC
LATCH
CC
GATE1
LATCH
GATE2
OUT1
OUT2
GND
GATE1
LATCH
GATE2
IN1
See Mech. Drawings Section
IN2
OUT1
OUT2
See Mech. Drawings Section
GND
16-Pin DIP SOIC (300-mil)
IN1
IN2
16-Pin DIP (300-mil)
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
DS1640/DS1640C
- +3 to +5 Volt Input
- Ground
- FET Sources
- FET Drains
- FET Control Gates
- No Connection
- Gate Inputs Latch Control
16
15
14
13
12
11
10
9
16
15
14
13
12
11
10
9
IN4
GATE4
OUT4
NC
V
OUT3
GATE3
IN3
CC
IN4
GATE4
OUT4
NC
V
OUT3
GATE3
IN3
CC
111999
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DS1640S Summary of contents
Page 1
FEATURES Contains four P channel power FET switches that can each supply over 300 mA @ 0.2 volts drop Controlled directly from CMOS or TTL level signals Fast switching time of less than rated supply current ...
Page 2
OPERATION With +3 Û +5 volts applied between the V disconnected from its respective output based on the bias applied to the control gate (see Figure 1). A set of four internal latches is controlled by the latch input. The ...
Page 3
ABSOLUTE MAXIMUM RATINGS* Voltage on Any Pin Relative to Ground Operating Temperature Storage Temperature Soldering Temperature * This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the ...
Page 4
NOTES: 1. All voltages are referenced to ground. 2. When V is below minimum limits output levels are not guaranteed the supply current with one or more switches on. CC1 when all switches ...