TPS2041B_17 Datasheet, PDF (1/59 Pages) Texas Instruments – Current-Limited, Power-Distribution Switches

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
TPS2041B, TPS2042B, TPS2043B, TPS2044B
TPS2051B, TPS2052B, TPS2053B, TPS2054B
SLVS514M – JUNE 2010 – REVISED JUNE 2016
TPS20xxB Current-Limited, Power-Distribution Switches
1 Features
•1 70-mΩ High-Side MOSFET
• 500-mA Continuous Current
• Thermal and Short-Circuit Protection
• Accurate Current Limit
(0.75 A Minimum, 1.25 A Maximum)
• 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
2 Applications
• Heavy Capacitive Loads
• Short-Circuit Protections
3 Description
The TPS20xxB 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 (typical).
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
SOIC (8)
4.90 mm × 3.91 mm
SOIC (16)
9.90 mm × 3.91 mm
TPS20xxB
SOT-23 (5)
2.90 mm × 1.60 mm
HVSSOP (8)
3.00 mm × 3.00 mm
SON (8)
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Power Supply
2.7 V to 5.5 V
Typical Application Schematic
TPS2042B
2
IN
0.1 µF
7
OUT1
0.1 µF
22 µF
Load
8
OC1
3
EN1
5
OC2
4
EN2
6
OUT2
0.1 µF
22 µF
Load
GND
1
Copyright © 2016, Texas Instruments Incorporated
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.