- 制造厂商：TI
- 产品类别：电源管理
- 技术类目：电源开关 - 负载开关
- 功能描述：具有输出放电功能的 3.6V、4A、4.7mΩ 负载开关
- 点击这里打开及下载TPS22970的技术文档资料
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The TPS22970 is a small, space-saving load switch with controlled Turn-ON to reduce inrush current. The device contains an N-channel MOSFET that can operate over an input voltage range of 0.65 V to 3.6 V and pulsed switch currents up to 4 A. An integrated charge pump biases the NMOS switch in order to achieve a minimum switch ON resistance (RON). The switch is controlled by an on and off input (ON), which is capable of interfacing directly with low-voltage control signals.
The TPS22970 is capable of thermal shutdown when the junction temperature is above the threshold, turning the switch off. The switch turns on again when the junction temperature stabilizes to a safe range.
The TPS22970 has a 150-Ω on-chip resistor for quick discharge of the output when switch is disabled to avoid any unknown state caused by floating supply to the downstream load.
The TPS22970 has an internally controlled rise time in order to reduce inrush current.
The TPS22970 is available in an ultra-small, space saving 8-pin WCSP package and is characterized for operation over the free-air temperature range of –40°C to +105°C.
- Input Voltage Range (VIN): 0.65 V to 3.6 V
- On-Resistance
- RON = 4.7 mΩ (Typical) at VIN ≥ 1.8 V
- RON = 5.1 mΩ (Typical) at VIN = 1.05 V
- RON = 6.4 mΩ (Typical) at VIN = 0.65 V
- Maximum Continuous Switch Current (IMAX): 4 A
- ON State (IQ): 30 μA (Typical) at VIN > 1.2 V
- OFF State (ISD): 1 μA (Typical) at VIN > 1.8 V
- Controlled Slew Rate to Avoid Inrush Current
- 3.6 V Turn-ON time (tON): 1530 μs
- 0.65 V Turn-ON time (tON): 815 μs
- Low Threshold Enable (ON) Supports Use of Logic as Low as 0.9 V (VIH) of Logic
- Thermal Shutdown (TSD)
- Quick Output Discharge (QOD): 150-Ω (Typical)
- Number of channels (#)
- 1
- Vin (Min) (V)
- 0.65
- Vin (Max) (V)
- 3.6
- Imax (A)
- 4
- Ron (Typ) (mOhm)
- 4.7
- Shutdown current (ISD) (Typ) (uA)
- 1
- Quiescent current (Iq) (Typ) (uA)
- 35
- Soft start
- Fixed Rise Time
- Rise time (Typ) (us)
- 985
- Current limit type
- None
- Features
- Quick output discharge, Thermal shutdown
- Operating temperature range (C)
- -40 to 105
TPS22970的完整型号有：TPS22970YZPR、TPS22970YZPT，以下是这些产品的关键参数及官网采购报价：
TPS22970YZPR，工作温度：-40 to 105，封装：DSBGA (YZP)-8，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SAC396，TI官网TPS22970YZPR的批量USD价格：0.158（1000+）
TPS22970YZPT，工作温度：-40 to 105，封装：DSBGA (YZP)-8，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SAC396，TI官网TPS22970YZPT的批量USD价格：0.382（1000+）
TPS22970EVM — TPS22970 3.6V、4A、5.3mΩ 导通电阻负载开关评估模块
TPS22970 评估模块 (EVM) 是一个组装完备且经过测试的电路，用于评估 TPS22970 负载开关。TPS22970EVM 可让用户在不同负载条件下（0A 至 4A）向 TPS22970 施加不同的输入电压（0.65V 至 3.6V）。可在 EVM 上监控输出、输入和开关波形。
TPS22970 Unencrypted PSpice Transient Model Package (Rev. A)
PSpice for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence 的模拟分析引擎。PSpice for TI 可免费使用，包括业内超大的模型库之一，涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。借助?PSpice for TI 的设计和仿真环境及其内置的模型库，您可对复杂的混合信号设计进行仿真。创建完整的终端设备设计和原型解决方案，然后再进行布局和制造，可缩短产品上市时间并降低开发成本。
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