TPS22945 - 5.5V，0.2A，400mΩ，100mA 限流负载开关

TPS22945是TI德州仪器公司的一款电压与电流限制保护产品，TPS22945是5.5V，0.2A，400mΩ，100mA 限流负载开关，本站介绍了TPS22945的封装应用图解、特点和优点、功能等，并给出了与TPS22945相关的TI元器件型号供参考。

TPS22945 - 5.5V，0.2A，400mΩ，100mA 限流负载开关 - 电压与电流限制保护 - 集成负载开关 - 德州仪器

产品特性

Input Voltage Range: 1.62 V to 5.5 V
Low ON resistance
- rON = 0.4 Ω at VIN = 5.5 V
- rON = 0.5 Ω at VIN = 3.3 V
- rON = 0.6 Ω at VIN = 2.5 V
- rON = 0.8 Ω at VIN = 1.8 V
Minimum Current Limit: 40mA or 100 mA
Undervoltage Lockout (UVLO)
Thermal Shutdown
Shutdown Current < 1 μA
Fast Current Limit Response Time
Fault Blanking
Auto Restart
1.8-V Compatible Control Input Thresholds
ESD Performance Tested Per JESD 22
- 4000-V Human-Body Model (A114-B, Class II)
- 1000-V Charged-Device Model (C101)
Tiny SC-70 (DCK) Package
UL Recognized Component (UL File 169910)
Evaluated to IEC 60950-1, Ed 2, Am1, Annex CC, Test Program 2 with CB Report

产品应用

Low-Current Sensor Protection
HDMI Connector Protection
Notebooks
PDAs
GPS Devices
MP3 Players
Peripheral Ports

产品说明

The TPS22941/2/3/4/5 load switches provide protection to systems and loads in high-current conditions. The devices contain a 0.4-Ω current-limited P-channel MOSFET that can operate over an input voltage range of 1.62 V to 5.5 V. Current is prevented from flowing when the MOSFET is off. The switch is controlled by an on/off input (ON), which is capable of interfacing directly with low-voltage control signals. The TPS22941/2/3/4/5 includes thermal shutdown protection that prevents damage to the device when a continuous over-current condition causes excessive heating by turning off the switch.

These devices provide an integrated, robust solution to provide current limiting the output current to a safe level by switching into a constant-current mode when the ouptut load exceeds the current-limit threshold. The OC logic output asserts low during overcurrent, undervoltage, or overtemperature conditions. These additional features make the TPS22941/2/3/4/5 an ideal solution for applications where current limiting is necessary.

This family of devices are available in a SC70-5 (DCK) package. It is characterized for operation over the free-air temperature range of –40°C to 85°C.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
TPS22941	SC70 (5)	2.00mm × 2.10 mm
TPS22942
TPS22943
TPS22944
TPS22945

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