DRB−8
DGN−8
D−8
D−16
DBV−5
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SLVS514J – APRIL 2004 – REVISED DECEMBER 2008
CURRENT-LIMITED, POWER-DISTRIBUTION SWITCHES
1
FEATURES
70-mΩ High-Side MOSFET
500-mA Continuous Current
Thermal and Short-Circuit Protection
Accurate Current Limit
(0.75 A min, 1.25 A max)
Operating Range: 2.7 V to 5.5 V
0.6-ms Typical Rise Time
Undervoltage Lockout
Deglitched Fault Report (OC)
No OC Glitch During Power Up
Maximum Standby Supply Current:
1-µA (Single, Dual) or 2-µA (Triple, Quad)
Ambient Temperature Range: -40°C to 85°C
UL Recognized, File Number E169910
Additional UL Recognition for TPS2042B and
TPS2052B for Ganged Configuration
APPLICATIONS
•
•
Heavy Capacitive Loads
Short-Circuit Protections
TPS2041B/TPS2051B
DBV PACKAGE
(TOP VIEW)
OUT
GND
OC
EN
†
•
•
•
•
2
TPS2041B/TPS2051B
D AND DGN PACKAGES
(TOP VIEW)
GND
IN
IN
EN
†
1
2
3
4
8
7
6
5
OUT
OUT
OUT
OC
TPS2042B/TPS2052B
D AND DGN PACKAGES
(TOP VIEW)
GND
IN
EN1
†
EN2
†
1
2
3
4
8
7
6
5
OC1
OUT1
OUT2
OC2
IN
•
•
•
•
•
•
•
•
•
TPS2042B/TPS2052B
DRB PACKAGES
(TOP VIEW)
GND
IN
EN1
†
EN2
†
1
2
3
4
8
7
6
5
TPS2043B/TPS2053B
D PACKAGE
(TOP VIEW)
TPS2044B/TPS2054B
D PACKAGE
(TOP VIEW)
OC1
OUT1
OUT2
OC2
GND
IN1
EN1†
EN2†
GND
IN2
EN3†
NC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
OC1
OUT1
OUT2
OC2
OC3
OUT3
NC
NC
GND
IN1
EN1†
EN2†
GND
IN2
EN3†
EN4†
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
OC1
OUT1
OUT2
OC2
OC3
OUT3
OUT4
OC4
†
All enable inputs are active high for the TPS205xB series.
NC − No connect
DESCRIPTION
The TPS204xB/TPS205xB power-distribution switches are intended for applications where heavy capacitive
loads and short circuits are likely to be encountered. These devices incorporates 70-mΩ N-channel MOSFET
power switches for power-distribution systems that require multiple power switches in a single package. Each
switch is controlled by a 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, the device limits 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 that the switch remains
off until valid input voltage is present. This power-distribution switch is designed to set current limit at 1 A
typically.
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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.
PowerPAD is a trademark of Texas Instruments.
Copyright © 2004–2008, Texas Instruments Incorporated
UNLESS OTHERWISE NOTED this document contains
PRODUCTION DATA information current as of publication date.
Products conform to specifications per the terms of Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
TI [ TEXAS INSTRUMENTS ]
