TPS2020, TPS2021, TPS2022, TPS2023, TPS2024
POWER-DISTRIBUTION SWITCHES
SLVS175A – DECEMBER 1998 – REVISED NOVEMBER 1999
D
D
D
D
D
D
D
D
D
D
D
D
33-mΩ (5-V Input) High-Side MOSFET
Switch
Short-Circuit and Thermal Protection
Overcurrent Logic Output
Operating Range . . . 2.7 V to 5.5 V
Logic-Level Enable Input
Typical Rise Time . . . 6.1 ms
Undervoltage Lockout
Maximum Standby Supply
Current . . . 10
µA
No Drain-Source Back-Gate Diode
Available in 8-pin SOIC and PDIP Packages
Ambient Temperature Range, – 40°C to 85°C
2-kV Human-Body-Model, 200-V
Machine-Model ESD Protection
D OR P PACKAGE
(TOP VIEW)
GND
IN
IN
EN
1
2
3
4
8
7
6
5
OUT
OUT
OUT
OC
description
The TPS202x family of power distribution switches is intended for applications where heavy capacitive loads
and short circuits are likely to be encountered. These devices are 50-mΩ N-channel MOSFET high-side power
switches. The switch is controlled by a logic enable compatible with 5-V logic and 3-V logic. 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 TPS202x limits the output
current to a safe level by switching into a constant-current mode, pulling the overcurrent (OC) 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.
The TPS202x devices differ only in short-circuit current threshold. The TPS2020 limits at 0.3-A load, the
TPS2021 at 0.9-A load, the TPS2022 at 1.5-A load, the TPS2023 at 2.2-A load, and the TPS2024 at 3-A load
(see Available Options). The TPS202x is available in an 8-pin small-outline integrated-circuit (SOIC) package
and in an 8-pin dual-in-line (DIP) package and operates over a junction temperature range of – 40°C to 125°C.
GENERAL SWITCH CATALOG
33 mΩ, single
TPS201xA 0.2 A – 2 A
TPS202x
TPS203x
0.2 A – 2 A
0.2 A – 2 A
80 mΩ, dual
TPS2042
TPS2052
TPS2046
TPS2056
500 mA
500 mA
250 mA
250 mA
80 mΩ, triple
80 mΩ, quad
80 mΩ, single
TPS2014
TPS2015
TPS2041
TPS2051
TPS2045
TPS2055
600 mA
1A
500 mA
500 mA
250 mA
250 mA
260 mΩ
IN1
IN2
OUT
TPS2100/1
IN1 500 mA
IN2 10 mA
TPS2102/3/4/5
IN1
500 mA
IN2
100 mA
1.3
Ω
TPS2043
TPS2053
TPS2047
TPS2057
500 mA
500 mA
250 mA
250 mA
TPS2044
TPS2054
TPS2048
TPS2058
500 mA
500 mA
250 mA
250 mA
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.
Copyright
©
1999, Texas Instruments Incorporated
PRODUCTION DATA information is 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.
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
1
ETC [ ETC ]
