Texas Instruments TPS2020, TPS2021, TPS2022, TPS2023, TPS2024 Power-Distribution Switches Data Sheet

查询TPS2020供应商 TPS2020, TPS2021, TPS2022, TPS2023, TPS2024

POWER-DISTRIBUTION SWITCHES SLVS175A – DECEMBER 1998 – REVISED NOVEMBER 1999

33-mΩ (5-V Input) High-Side MOSFET

D OR P PACKAGE

Switch

(TOP VIEW)

Short-Circuit and Thermal Protection

GND OUT

Overcurrent Logic Output

IN OUT

Operating Range 2.7 V to 5.5 V

IN OUT

Logic-Level Enable Input EN OC 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-k V Human-Body-Model, 200-V Machine-Model ESD Protection

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 TPS201x A 0.2 A – 2 A 80 mΩ, dual TPS2042 500 m A 80 mΩ, triple 80 mΩ, quad

TPS202x 0.2 A – 2 A TPS2052 500 m A TPS203x 0.2 A – 2 A TPS2046 250 m A

TPS2056 250 m A

80 mΩ, single TPS2014 600 m A TPS2100/1260 mΩ

TPS2015 1 A IN1 500 m A

IN1 TPS2043 500 m A TPS2044 500 m A

TPS2041 500 m A IN2 10 m A

OUT TPS2053 500 m A TPS2054 500 m A

TPS2051 500 m A IN2

TPS2102/3/4/5 TPS2047 250 m A TPS2048 250 m A

TPS2045 250 m A

1.3 Ω IN1 500 m A TPS2057 250 m A TPS2058 250 m A

TPS2055 250 m A

IN2 100 m A

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.

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