TPS22997RYZR - 5.5V 10A 4mOhm Load Switch | Texas Instruments
料号： TPS22997RYZR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.15 | $2.15 |
| 10 | $1.94 | $19.40 |
| 100 | $1.62 | $162.00 |
| 500 | $1.36 | $680.00 |
| 1,000 | $1.1 | $1,100.00 |
TPS22997RYZR 概述
A load switch is a semiconductor device that connects or disconnects a power supply rail from a load, functioning as an electronic switch. It typically integrates a pass MOSFET, gate-drive control logic, and protection features such as thermal shutdown and inrush management. Load switches sit within the power management IC hierarchy alongside hot-swap controllers and eFuses, and are essential for power gating, rail sequencing, and protection in systems from smartphones to industrial equipment.
Key features include adjustable slew rate control to minimize inrush current during turn-on, adjustable quick output discharge (QOD) for rapid discharge of output capacitance, and a power good (PG) signal for rail monitoring. The enable pin (ON) interfaces directly with low-voltage GPIO signals, and the device offers thermal shutdown protection and low power consumption. The bias voltage range of 1.5 V to 5.5 V ensures compatibility with standard logic levels in mixed-voltage systems.
Technically, the TPS22997 integrates a very low on-resistance N-channel MOSFET, achieving 4 mOhm typical RON, which minimizes voltage drop and conduction loss - critical at 10 A loads where even milliohms matter (4 mOhm x 10 A = 40 mV drop and 0.4 W dissipation). The configurable rise time allows designers to tailor inrush current to upstream supply capability and load capacitance, reducing supply droop and board stress.
Typical applications include power distribution in SSDs, smartphones, tablets, and other portable and battery-powered devices, as well as hot-swap and load-switching functions in industrial systems. The low RON and high current capability suit high-current low-voltage rails, while the tiny 1.5x2 mm footprint saves board space.
When designing with the TPS22997, provide adequate PCB copper area for thermal dissipation at full 10 A load, place decoupling capacitors close to VIN and VBIAS, and set the slew rate to balance inrush current against turn-on delay for the specific load capacitance.
直接替换替代料： TPS22997RYZR ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： TPS22997RYZR （相同外形与封装尺寸） ——差异在于 Package, On-Resistance (RON), Power Good Output, Slew Rate Control, Switch Type.
快速对比工具——选择替代料号进行并排对比：
TPS22997QRYZRQ1
✅ 直接替换✓ 有现货
$0.72 / 个
查看数据手册 →TPS22997RYZR 最大额定值与电气特性
| 拓扑 | Single-channel load switch, 1:1 N-Channel |
| Input Voltage Range (VIN) | 0.1 V to 5.5 V |
| Bias Voltage Range (VBIAS) | 1.5 V to 5.5 V |
| Maximum Continuous Current | 10 A |
| On-Resistance (RON) | 4 mOhm (typ.) |
| Slew Rate Control | Adjustable (external CT) |
| Quick Output Discharge (QOD) | Adjustable |
| 电源正常输出 | Yes (PG signal) |
| 使能引脚 | ON pin, GPIO-compatible low-voltage logic |
| Protection Features | Thermal shutdown, reverse current protection |
| 封装 | 10-WQFN-HR (1.5 x 2 mm) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
| 分类 | Power Distribution Switches, Load Drivers |
TPS22997RYZR 10-wqfn-hr (1.5 x 2 mm) 引脚配置指南
TPS22997RYZR（10-wqfn-hr (1.5 x 2 mm) 封装）的引脚配置。 该功率器件具有栅极、漏极和源极端子。对于无极性封装，请参阅制造商数据手册以了解确切的引脚 1 方向和封装尺寸细节。常见应用包括电源设计、电机驱动和负载开关。
暂无详细引脚数据： TPS22997RYZR.
请参阅 数据手册 以查看完整引脚配置。
典型应用
TPS22997RYZR 适用于 6 应用s: SSD and Storage Power Distribution, Smartphone and Tablet Power Gating, Industrial Hot-Swap and Load Switching, Battery-Powered IoT Devices, Automotive ECUs and Infotainment Rails, Rail Sequencing in Multi-Rail Processors.
SSD and Storage Power Distribution
The TPS22997RYZR fits SSD power distribution because its 4 mOhm typical RON and 10 A continuous rating limit voltage drop on high-current rails to roughly 40 mV at full load, preserving margin for downstream DC-DC converters. The adjustable slew rate lets designers ramp the SSD controller and NAND supply slowly enough to avoid inrush-triggered droop into bulk capacitance, while the power good output gives the controller a ready signal. Placed between the 5 V or 3.3 V input rail and the load, the 1.5 x 2 mm WQFN-HR footprint fits dense storage PCBs.
推荐
Smartphone and Tablet Power Gating
In battery-powered handsets, the 0.1 V to 5.5 V input range allows the TPS22997RYZR to gate rails directly off Li-ion battery or regulated subsystem rails, and its low power consumption minimizes standby battery drain. The ON pin interfaces with low-voltage GPIO from the PMIC or application processor for software-controlled power gating of cameras, radios, or peripherals. Adjustable quick output discharge pulls the isolated rail to ground promptly so subsystem restarts are deterministic, and the 1.5 x 2 mm package matches the tight area budgets of portable designs.
推荐
Industrial Hot-Swap and Load Switching
For industrial boards, the TPS22997RYZR provides controlled turn-on of high-current low-voltage rails, with thermal shutdown protecting the pass MOSFET during sustained overload. Reverse current protection prevents a charged output from back-driving the input when the rail is switched off. The power good signal enables fault logging or sequenced startup alongside hot-swap controllers. Because VIN starts at 0.1 V, the device can also switch low-voltage point-of-load rails ahead of, or in place of, discrete MOSFET and gate-driver solutions.
推荐
Battery-Powered IoT Devices
IoT nodes benefit from the TPS22997RYZR's low quiescent consumption and GPIO-compatible ON pin, letting a microcontroller cut power to sensors, radios, or displays between duty cycles. The wide 0.1 V to 5.5 V VIN supports single-cell or multi-cell battery configurations, and VBIAS (1.5 V to 5.5 V) can run from a regulated logic rail independent of the switched supply. Adjustable slew rate suppresses inrush when large decoupling networks recharge, protecting battery voltage from droop that would otherwise reset the MCU.
推荐
Automotive ECUs and Infotainment Rails
The AEC-Q100 qualified TPS22997QRYZRQ1 variant makes this function suitable for automotive modules, gating high-current accessory or sensor rails under ECU control. Thermal shutdown and reverse current protection address battery-transient and load-dump-adjacent fault conditions at the distribution point, while the power good output feeds the system supervisor for diagnostic reporting. The compact 10-WQFN-HR package eases placement near the load rather than at a centralized fuse box, shortening high-current PCB traces and reducing copper losses.
推荐
Rail Sequencing in Multi-Rail Processors
SoCs and FPGAs require ordered power-up of core, I/O, and analog rails. The TPS22997RYZR's power good output can gate the ON pin of downstream switches, enforcing sequence without an external supervisor, while adjustable rise time tailors each rail's ramp rate. The adjustable QOD ensures a fully discharged rail before restart, preventing mid-ramp glitches. Handling 10 A at 4 mOhm makes it appropriate for sequencing high-current core rails that lower-current load switches cannot carry, in a 1.5 x 2 mm footprint placed near the processor.
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推荐产品汇总
工程参考数据： TPS22997RYZR ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | TPS22997QRYZRQ1 | TPS22950 | TPS22960 |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
关键差异点
- 10 A capability in 1.5 x 2 mm package （对比 TPS22950)
- Adjustable rise time with CT pin （对比 TPS22960)
- Power good output for rail monitoring （对比 TPS22960)
设计说明
At the full 10 A continuous current, conduction loss is approximately 0.4 W (I^2 x RON = 100 x 4 mOhm). The 10-WQFN-HR (1.5 x 2 mm) package has a very small footprint, so provide generous PCB copper pour on the VIN and VOUT pads - multiple thermal vias to inner planes are recommended - to keep junction temperature within limits during sustained full-load operation.
Place a ceramic decoupling capacitor close to VIN and a separate capacitor at VBIAS. Route the high-current VIN-to-VOUT path with wide, short traces or planes to minimize parasitic resistance adding to the 4 mOhm switch. Keep the CT pin capacitor close to the pin since it sets slew rate, and keep the PG pull-up resistor near the receiving logic.
Set the slew rate capacitor to match the load capacitance: too fast a ramp causes inrush currents that droop the upstream supply, while too slow a ramp extends startup time. Do not exceed VBIAS of 5.5 V, and remember QOD discharges the output when disabled - avoid QOD on rails with always-on leakage paths. Verify PG thresholds against downstream load undervoltage requirements.
合规信息
RoHS compliant per TI product listing; the automotive AEC-Q100 variant is TPS22997QRYZRQ1.
