POWER-DISTRIBUTION SWITCHES. TPS2048A Datasheet

TPS2048A SWITCHES. Datasheet pdf. Equivalent

Part TPS2048A
Description CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES
Feature www.ti.com TPS2045A, TPS2046A TPS2047A, TPS2048A, TPS2055A TPS2056A, TPS2057A, TPS2058A SLVS251C – .
Manufacture etcTI
Datasheet
Download TPS2048A Datasheet



TPS2048A
www.ti.com
TPS2045A, TPS2046A
TPS2047A, TPS2048A, TPS2055A
TPS2056A, TPS2057A, TPS2058A
SLVS251C – SEPTEMBER 2000 – REVISED JANUARY 2008
CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES
FEATURES
1
80-mHigh-Side MOSFET Switch
250 mA Continuous Current Per Channel
Independent Thermal and Short-Circuit
Protection With Overcurrent Logic Output
Operating Range: 2.7-V to 5.5-V
CMOS- and TTL-Compatible Enable Inputs
2.5-ms Typical Rise Time
Undervoltage Lockout
10 µA Maximum Standby Supply Current
for Single and Dual
(20 µA for Triple and Quad)
Bidirectional Switch
Ambient Temperature Range, 0°C to 85°C
ESD Protection
DESCRIPTION
The TPS2045A through TPS2048A and TPS2055A
through TPS2058A power-distribution switches are
intended for applications where heavy capacitive
loads and short circuits are likely to be encountered.
TPS2045A, TPS2055A
D PACKAGE
(TOP VIEW)
GND
IN
IN
EN
1
2
3
4
8 OUT
7 OUT
6 OUT
5 OC
TPS2046A, TPS2056A
D PACKAGE
(TOP VIEW)
GND
IN
EN1
EN2
1
2
3
4
8 OC1
7 OUT1
6 OUT2
5 OC2
TPS2047A, TPS2057A
D PACKAGE
(TOP VIEW)
TPS2048A, TPS2058A
D PACKAGE
(TOP VIEW)
GNDA
IN1
EN1
EN2
GNDB
IN2
EN3
NC
1
2
3
4
5
6
7
8
16 OC1
15 OUT1
14 OUT2
13 OC2
12 OC3
11 OUT3
10 NC
9 NC
GNDA
IN1
EN1
EN2
GNDB
IN2
EN3
EN4
1
2
3
4
5
6
7
8
16 OC1
15 OUT1
14 OUT2
13 OC2
12 OC3
11 OUT3
10 OUT4
9 OC4
All enable inputs are active high for the TPS205xA series.
NC – No connect
These devices incorporate 80-mN-channel MOSFET high-side power switches for power-distribution systems
that require multiple power switches in a single package. Each switch is controlled by an independent logic
enable input. Gate drive is provided by an internal charge pump designed to control the power-switch rise times
and fall times to minimize current surges during switching. The charge pump requires no external components
and allows operation from supplies as low as 2.7 V.
When the output load exceeds the current-limit threshold or a short is present, these devices limit the output
current to a safe level by switching into a constant-current mode, pulling the overcurrent (OCx) logic output low.
When continuous heavy overloads and short circuits increase the power dissipation in the switch, causing the
junction temperature to rise, a thermal protection circuit shuts off the switch to prevent damage. Recovery from a
thermal shutdown is automatic once the device has cooled sufficiently. Internal circuitry ensures the switch
remains off until valid input voltage is present. These power-distribution switches are designed to current limit at
0.5 A.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2000–2008, Texas Instruments Incorporated



TPS2048A
TPS2045A, TPS2046A
TPS2047A, TPS2048A, TPS2055A
TPS2056A, TPS2057A, TPS2058A
SLVS251C – SEPTEMBER 2000 – REVISED JANUARY 2008
www.ti.com
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
AVAILABLE OPTIONS(1)
TA
0°C to 85°C
ENABLE
Active low
Active high
Active low
Active high
Active low
Active high
Active low
Active high
RECOMMENDED
MAXIMUM CONTINUOUS
LOAD CURRENT
(A)
TYPICAL SHORT-CIRCUIT
CURRENT LIMIT AT 25°C
(A)
NUMBER OF
SWITCHES
Single
Dual
0.25 0.5
Triple
Quad
PACKAGED DEVICES
SOIC (D)(2)
TPS2045AD
TPS2055AD
TPS2046AD
TPS2056AD
TPS2047AD
TPS2057AD
TPS2048AD
TPS2058AD
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
website at www.ti.com.
(2) The D package is available taped and reeled. Add an R suffix to device type (e.g., TPS2045ADR)
2 Submit Documentation Feedback
Copyright © 2000–2008, Texas Instruments Incorporated
Product Folder Link(s): TPS2045A TPS2046A TPS2047A TPS2048A TPS2055A TPS2056A TPS2057A TPS2058A





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