TPS25821DSST - 1.5A USB Type-C Source Controller | Texas Instruments
料号： TPS25821DSST ✓ 量产中TPS25821DSST 概述
A USB Type-C source controller is an interface IC within the USB Type-C and power-delivery ecosystem. It identifies a Type-C attach event, applies the appropriate source behavior, and helps manage power to a connected USB device. Within the broader hierarchy, the TPS25821 is a USB interface controller, power-management IC, and semiconductor designed to coordinate connector detection with controlled power delivery.
The headline specifications are a 1.5A rated power switch, a 12-WSON (3x2) package, and an operating temperature range of -40°C to +125°C. The manufacturer identifies the device as a USB Type-C source controller and power switch. Its Rev. C family datasheet also documents the TPS25820 companion family, providing a common technical reference for designers evaluating the source-controller family.
The integrated source-controller and switch architecture reduces the number of separate power-path components required for a USB Type-C source design. According to the TPS25821 product page, the PMP40260 reference design uses this device family to provide 5V at 1.5A to a USB Type-C device while also supporting a legacy device that uses DCP charging behavior. This makes the device applicable where a compact Type-C source port must support both modern Type-C and legacy charging paths.
Typical uses include USB Type-C docking stations, laptop and tablet charging ports, power banks, industrial USB power-delivery equipment, monitor USB power ports, and multiport charging accessories. The -40°C to +125°C temperature range supports applications extending beyond room-temperature consumer accessories. The package is especially useful where connector density and board area limit the available component footprint.
Designers should review the manufacturer datasheet and the PMP40260 reference design before finalizing input protection, output capacitance, current limiting, thermal layout, and USB Type-C advertising. Because the retrieved data does not specify a complete pin map, input and output voltage limits, switch resistance, logic thresholds, or capacitor requirements, those values must be confirmed directly from the manufacturer documentation rather than inferred from the product category.
This product page consolidates the verified manufacturer description, distributor availability, package information, temperature range, reference-design context, and engineering selection guidance. It also clearly separates known facts from unavailable detailed specifications and avoids presenting generic USB Type-C characteristics as verified TPS25821DSST specifications.
直接替换替代料： TPS25821DSST ——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： TPS25821DSST （相同外形与封装尺寸） ——差异在于 Operating Temperature Range, Package.
TPS25820DSST
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →TPS25821DSST 规格参数
| Device Type | USB Type-C source controller and power switch |
| Rated Power-Switch Current | 1.5 A |
| 封装 | 12-WSON (3x2), DSS package |
| 引脚数量 | 12 pins |
| Minimum Operating Temperature | -40 °C |
| Maximum Operating Temperature | +125 °C |
| 工作温度范围 | -40 °C to +125 °C |
| 安装类型 | Surface mount |
| Product Family Datasheet Revision | Rev. C |
| Reference-Design Output | 5 V at 1.5 A |
| Legacy Charging Support | DCP charging protocol support in PMP40260 reference design |
TPS25821DSST 12-wson (3x2), dss package 引脚配置指南
TPS25821DSST（12-wson (3x2), dss package 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： TPS25821DSST.
请参阅 数据手册 以查看完整引脚配置。
典型应用
TPS25821DSST 适用于 6 应用s: USB Type-C Power Bank, Laptop and Tablet Charging Port, Industrial USB Charging Accessory, USB-C Docking Station, Legacy and USB Type-C Charging Hub, Monitor and Display USB Power Port.
USB Type-C Power Bank
The TPS25821DSST fits a power bank that exposes a USB Type-C source port because it combines a Type-C source controller with a 1.5A power switch in one 12-WSON (3x2) package. The manufacturer’s PMP40260 reference design demonstrates the central operating case: supplying 5V at 1.5A to a Type-C device while also supporting a legacy device using DCP charging behavior. Its -40°C to +125°C rating provides a broad temperature envelope for portable, industrial, or automotive-adjacent accessories. The compact package also reduces PCB area around a crowded connector, although final capacitor selection, current limiting, thermal layout, and USB Type-C advertising must be confirmed from the Rev. C datasheet.
推荐
Laptop and Tablet Charging Port
TPS25821DSST is appropriate for a compact laptop or tablet charging port requiring controlled Type-C source behavior and up to 1.5A of switched current. Its integrated source-controller and power-switch arrangement reduces the number of discrete blocks placed beside a USB Type-C receptacle. The verified 12-WSON (3x2) package is valuable when connector placement and routing space are constrained, while the -40°C to +125°C range allows use in equipment beyond ordinary consumer environments. According to Texas Instruments, the device family supports 5V at 1.5A, as demonstrated by the PMP40260 reference design. Input protection, output capacitors, fault behavior, and host-connection requirements must be implemented exactly as specified by the manufacturer.
推荐
Industrial USB Charging Accessory
The TPS25821DSST can support an industrial USB charging accessory where a Type-C source port must operate across a wide environmental range. Its verified -40°C to +125°C specification is broader than a typical room-temperature consumer design, while the 1.5A power switch provides a defined source-current capability for connected equipment. Integrating the source controller and switch in a 12-WSON (3x2) package helps preserve PCB area around the connector and reduces assembly complexity compared with separate controller and switch blocks. The engineer should still verify operating limits, derating, capacitor stability, and protection requirements in the official Texas Instruments Rev. C documentation before industrial qualification.
推荐
USB-C Docking Station
TPS25821DSST is suitable for a docking station that provides a downstream USB Type-C source connection with controlled 1.5A power delivery. The combined source-controller and power-switch functions allow the port to detect the appropriate source condition and manage switched output while conserving board area in a multiport product. Texas Instruments documents a 5V, 1.5A application in the PMP40260 reference design, which provides a useful starting architecture for a source-only port. Because docking stations can combine several power paths and data interfaces, designers should confirm pin functions, current-limit behavior, USB Type-C rules, capacitor values, and layout guidance directly from the TPS25820/TPS25821 Rev. C family documentation.
推荐
Legacy and USB Type-C Charging Hub
TPS25821DSST fits a charging hub that must accommodate both modern USB Type-C equipment and a legacy device using DCP charging behavior. The TI product page specifically identifies the PMP40260 reference design as a way to provide 5V at 1.5A to a USB Type-C device as well as to a legacy device supporting the DCP charging protocol. Combining source control and power switching in a 12-WSON (3x2) package can simplify the power section of a multiport accessory. Implementers should nevertheless use the manufacturer’s schematic and layout guidance to preserve the intended detection, advertising, output-capacitance, and current-limit behavior.
推荐
Monitor and Display USB Power Port
TPS25821DSST can support a display or monitor accessory with a USB Type-C power-source port when the design requires up to 1.5A and compact placement beside the connector. The 12-WSON (3x2) package helps limit congestion in display electronics, and the integrated source controller and power switch simplify the controllable output stage. The verified -40°C to +125°C range is also relevant to displays deployed in industrial or outdoor-adjacent environments, subject to the complete product’s thermal design. Texas Instruments documents a 5V, 1.5A source output in the PMP40260 reference design. Final implementation must follow the official pinout, capacitor recommendations, protection requirements, and layout pattern for the DSS package.
推荐
推荐产品汇总
工程参考数据： TPS25821DSST ——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 |
|---|---|
| Device Type | USB Type-C source controller and power switch |
| Rated Switch Current | 1.5 A |
| Package | 12-WSON (3x2), DSS, 12 pins |
| Brand | Texas Instruments |
| Operating Temperature Range | -40 °C to +125 °C |
| Reference Output | 5 V at 1.5 A in PMP40260 reference design |
| Legacy Charging Support | DCP charging protocol support shown in PMP40260 |
| Family Datasheet Revision | Rev. C |
| Verified Reference Price | $1.763 from LCSC as of 2026-10-28 |
关键差异点
- Integrated source control and switched output （对比 TPS25820)
- Compact connector-side implementation （对比 TPS25821DSSR)
- Wide industrial temperature coverage （对比 TPS25821DSSR)
- Documented 1.5A source architecture （对比 TPS25820)
设计说明
Use the official Texas Instruments DSS package drawing and TPS25820/TPS25821 Rev. C layout guidance to define the 12-WSON (3x2) land pattern. The retrieved excerpts do not provide individual pin names, exposed-pad requirements, or a recommended footprint, so do not infer them from a generic 3x2 WSON drawing. Place the device and its required input and output capacitors close to the power-switch nodes, preserve the manufacturer’s recommended copper geometry, and verify connector current-carrying capacity against the 1.5A switching requirement.
Design the power path around the verified 1.5A switch rating and the PMP40260 example of 5V at 1.5A. Confirm the device’s input limits, current-limit behavior, shutdown response, and required external capacitance from the Rev. C datasheet before rating connectors, traces, fuses, or adapters. The exposed thermal path and maximum power dissipation were not present in the supplied excerpts, so thermal capability cannot be inferred solely from the 1.5A current rating. Use PCB copper and enclosure heat flow appropriate to the calculated worst-case dissipation.
Do not treat every TPS25821 orderable suffix as an independently verified drop-in alternative. The available results mention TPS25821DSST and TPS25821DSSR, but do not explain whether their commercial or packing differences affect procurement. Likewise, the TPS25820 shares a family datasheet with TPS25821, but the supplied data does not establish a pin-for-pin footprint match. Confirm ordering codes, pin assignments, USB Type-C behavior, electrical limits, and package drawings in TI documentation before approving a substitution.
合规信息
The supplied verified excerpts do not state the specific RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status of TPS25821DSST. These fields remain unknown rather than being inferred from general Texas Instruments policy.
