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TPS2049

更新时间： 2024-09-20 04:48:55

品牌	Logo	应用领域
德州仪器 - TI		开关电源开关
页数	文件大小	规格书
13页	247K
描述
SINGLE-CHANNEL 100 mA POWER SWITCH

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TPS2049 数据手册

TPS2049

www.ti.com

SLVS713–OCTOBER 2006

SINGLE-CHANNEL 100 mA POWER SWITCH

FEATURES

•

SOIC-8 Package

•

100-mA Continuous Current

Ambient Temperature Range: –40°C to 85°C

2 µS Response Time to Short Circuit

600-mΩ High-Side MOSFET

Thermal and Short-Circuit Protection

Operating Range: 2.7 V to 5.5 V

0.6-ms Typical Rise Time

GND

OUT

Undervoltage Lockout

Deglitched Fault Report (OC)

43 µA Quiescent Supply Current

1-µA Maximum Standby Supply Current

DESCRIPTION

The TPS2049 power-distribution switch is intended for applications where heavy capacitive loads and short

circuits are likely to be encountered. This device incorporates a 600-mΩ N-channel MOSFET power switch for

power-distribution systems that require only one power distribution path. The 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 2.7V.

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 (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. This power-distribution switch is designed to set current limit at

150mA typically.

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.

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