TPS2049 - SINGLE-CHANNEL 100ma POWER SWITCH

TPS2049是TI德州仪器公司的一款固定限流开关产品，TPS2049是SINGLE-CHANNEL 100ma POWER SWITCH，本站介绍了TPS2049的封装应用图解、特点和优点、功能等，并给出了与TPS2049相关的TI元器件型号供参考。

TPS2049 - SINGLE-CHANNEL 100ma POWER SWITCH - 固定限流开关 - USB电源和充电端口控制器 - 德州仪器

产品描述

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-m 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.

产品特性

100-mA Continuous Current
600-m High-SideMOSFET
Thermal and Short-Circuit Protection
Operating Range: 2.7 V to 5.5 V
0.6-ms Typical Rise Time
Undervoltage Lockout
Deglitched Fault Report (OC)
43 µA Quiescent Supply Current
1-µA Maximum Standby Supply Current
SOIC-8 Package
Ambient Temperature Range: -40°C to 85°C
2 µS Response Time to Short Circuit

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