TPS22970
- 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)
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.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | TPS22970 3.6-V, 4-A, 4.7-mΩ On-Resistance Load Switch datasheet (Rev. A) | PDF | HTML | 2017年 7月 20日 |
| Application note | Load Switch Thermal Considerations (Rev. A) | 2018年 10月 11日 | ||
| Application note | Basics of Load Switches (Rev. A) | 2018年 9月 5日 | ||
| Application note | Selecting a Load Switch to Replace a Discrete Solution | 2017年 4月 30日 | ||
| Application note | Timing of Load Switches | 2017年 4月 27日 | ||
| User guide | TPS22970 Load Switch Evaluation Module | 2016年 11月 30日 | ||
| Application note | Fundamentals of On-Resistance in Load Switches | 2016年 6月 9日 | ||
| Application note | Quiescent Current vs Shutdown Current for Load Switch Power Consumption | 2016年 3月 30日 | ||
| Application note | Managing Inrush Current (Rev. A) | 2015年 5月 28日 |
設計與開發
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TPS22970EVM — TPS22970 3.6V、4A、5.3mΩ 導通電阻負載開關評估模組
The TPS22970 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the TPS22970 load switch. The TPS22970EVM allows the user to apply different input voltages (0.65-V to 3.6-V) under different loading conditions (0-A to 4-A) to the TPS22970. Output, input, and switching (...)
TPS22970 Unencrypted PSpice Transient Model Package (Rev. A)
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
| 封裝 | 引腳 | 下載 |
|---|---|---|
| DSBGA (YZP) | 8 | 檢視選項 |
訂購與品質
- RoHS
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- 產品標記
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- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 資格摘要
- 進行中可靠性監測
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