TPS2041B_0709 Datasheet, PDF (1/41 Pages) Texas Instruments – CURRENT-LIMITED, POWER-DISTRIBUTION SWITCHES

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DGN−8 D−8
TPS2041B, TPS2042B
TPS2043B, TPS2044B, TPS2051B
D−16 DBV−5 _{TPS2052B, TPS2053B, TPS2054B}
SLVS514H – APRIL 2004 – REVISED SEPTEMBER 2007
CURRENT-LIMITED, POWER-DISTRIBUTION SWITCHES
FEATURES
1
• 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)
• Bidirectional Switch
• Ambient Temperature Range: -40°C to 85°C
• ESD Protection
• UL Recognized, File Number E169910
APPLICATIONS
• Heavy Capacitive Loads
• Short-Circuit Protections
TPS2041B/TPS2051B
DBV PACKAGE
(TOP VIEW)
TPS2041B/TPS2051B
D AND DGN PACKAGES
(TOP VIEW)
OUT
GND
OC
IN
GND 1
IN 2
IN ₃
†
EN
EN^†
4
8 OUT
7 OUT
6 ^OUT
5 ^OC
TPS2043B/TPS2053B
D PACKAGE
(TOP VIEW)
TPS2042B/TPS2052B
D AND DGN PACKAGES
(TOP VIEW)
GND 1
IN 2
EN1^† 3
EN2^† 4
8 OC1
7 OUT1
6 ^OUT2
5 ^OC2
TPS2044B/TPS2054B
D PACKAGE
(TOP VIEW)
GND ^{1 16} OC1
GND ^{1 16} OC1
IN1 2
EN1† ³
EN2† ⁴
GND 5
15 OUT1
14 OUT2
13 OC2
12 OC3
IN1 2
EN1† ³
EN2† ⁴
GND 5
15 OUT1
14 OUT2
13 OC2
12 OC3
IN2 6 11 OUT3
IN2 6 11 OUT3
EN3† ⁷
NC ⁸
10 NC
9 NC
EN3† ⁷
EN4† ⁸
10 OUT4
9 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.
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 © 2004–2007, Texas Instruments Incorporated