TPS22971
- Input voltage range (VIN): 0.65 V to 3.6 V
- On-resistance
- RDS(on) = 6.7 mΩ (typical) at VIN ≥ 1.8 V
- RDS(on) = 7.2 mΩ (typical) at VIN = 1.05 V
- RDS(on) = 8.9 mΩ (typical) at VIN = 0.65 V
- Maximum continuous switch current (IMAX): 3 A
- ON state (IQ): 30 µA (typical) at 3.6 VIN
- OFF state (ISD): 1 µA (typical) at 3.6 VIN
- Adjustable slew rate through CT pin
- Fast turn-ON ≤ 65 µs at VIN = 1 V
- Power good (PG) indicator after switch turn ON
- Low threshold enable (ON) of 0.9 V (VIH) supports use of low voltage control logic
- Thermal shutdown (TSD)
- Quick output discharge (QOD): 150-Ω (typical)
The TPS22971 is a space-saving single-channel load switch with controlled and adjustable turn-on slew rate and an integrated power good indicator. the device contains an n-channel mosfet that can operate over a low input voltage range of 0.65 v to 3.6 V and can support a maximum continuous current of 3 A. A low on-resistance of 6.7-mΩ minimizes the power loss and voltage drop across the load switch. The switch is controlled by an on and off input (ON), which is capable of interfacing directly with low-voltage control signals.
By default, the TPS22971 has a fast turn-on time to minimize system startup and wait time. The adjustable slew rate can also be reduced to limit inrush current. A power good (PG) signal internally monitors the gate threshold and indicates when the switch is fully on. When the switch is disabled, a 150-Ω on-chip resistor quickly discharges the output to ground and keeps it from floating.
The TPS22971 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 and integrates thermal shutdown to turn off in case of overheating.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | TPS22971 3.6-V, 3-A, 6.7-mΩ On-Resistance Load Switch with Adjustable Fast Turn-ON and Power Good datasheet (Rev. C) | PDF | HTML | 2020/2/17 | ||
| 應用說明 | Basics of Power Switches (Rev. A) | PDF | HTML | 2019/4/26 | |||
| 應用說明 | Load Switch Thermal Considerations (Rev. A) | 2018/10/11 | ||||
| 應用說明 | Basics of Load Switches (Rev. A) | 2018/9/5 | ||||
| 應用說明 | Selecting a Load Switch to Replace a Discrete Solution | 2017/4/30 | ||||
| 應用說明 | Timing of Load Switches | 2017/4/27 | ||||
| 應用說明 | Fundamentals of On-Resistance in Load Switches | 2016/6/9 | ||||
| 應用說明 | Quiescent Current vs Shutdown Current for Load Switch Power Consumption | 2016/3/30 | ||||
| 應用說明 | Managing Inrush Current (Rev. A) | 2015/5/28 |
設計與開發
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TPS22971EVM — TPS22971 3.6V、3A、7.5mΩ 導通電阻負載開關評估模組
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| DSBGA (YZP) | 8 | Ultra Librarian |
訂購與品質
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