STUSB4531BJR - Standalone USB PD Sink Controller | ST
料号： STUSB4531BJR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
STUSB4531BJR 概述
A USB PD sink controller is the device-side counterpart in a USB Type-C power negotiation: it communicates with a source (charger, dock, or power adapter) over the CC line using the USB PD protocol to agree on a voltage and current contract. Within the power-management hierarchy, it sits between the USB-C receptacle and the system power path, upstream of DC-DC converters and battery chargers, and is a key building block of modern USB-C power interface ICs.
Key features include fully standalone autorun operation with a default PDO configuration stored in internal non-volatile memory, proprietary negotiation algorithms that secure a power contract without a host MCU, dead battery operation powered directly from the VBUS receptacle pins, and a wide 23 V VBUS tolerance that removes the need for external front-end protection in many designs.
The STUSB4531 implements its negotiation state machines in dedicated hardware, so it continues operating even when the application processor is asleep or unpowered. The hybrid mode allows an application MCU to monitor or adjust the negotiation, giving designers both autonomy and flexibility.
Typical applications include USB-C powered accessories, power banks, portable and wearable devices, battery-powered industrial sensors, and any sink-side system that must charge reliably from a fully depleted battery.
Design consideration: because the device is powered from VBUS receptacle pins, ensure the CC line ESD and VBUS discharge timing follow the reference design layout for robust hot-plug behavior.
This page adds value beyond the ST datasheet by synthesizing distributor pricing context, same-family drop-in alternatives, and practical design notes in one place.
直接替换替代料： STUSB4531BJR ——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： STUSB4531BJR （相同外形与封装尺寸） ——差异在于 Dead Battery Mode, Function, Package, RoHS Status.
快速对比工具——选择替代料号进行并排对比：
STUSB4531QTR
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$1.58 / 个
查看数据手册 →STUSB4531BJR 规格参数
| 功能 | Standalone USB Type-C / USB PD sink controller |
| USB PD Role | Sink (power receiving device) |
| Negotiated PDOs | Up to 5 configurable |
| VBUS Voltage Rating | 23 V |
| Dead Battery Mode | Yes (STUSB4531BJR / STUSB4531QTR variants) |
| Operating Modes | Autorun mode, Hybrid mode |
| PDO Configuration Storage | Internal non-volatile memory |
| 工作温度 | -40C to +105C |
| 封装 | 16-pin CSP (chip-scale package) |
| 安装类型 | Surface Mount |
| Software Requirement | None required for basic negotiation (standalone) |
| Typical Supply | Powered directly from VBUS receptacle pins |
| Applications | USB-C sink devices, battery-powered charging systems |
| RoHS 状态 | RoHS Compliant (per Mouser listing) |
STUSB4531BJR 16-pin csp (chip-scale package) 引脚配置指南
STUSB4531BJR（16-pin csp (chip-scale 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： STUSB4531BJR.
请参阅 数据手册 以查看完整引脚配置。
典型应用
STUSB4531BJR 适用于 6 应用s: Power Banks, Portable and Wearable Devices, Battery-Powered Industrial Sensors, USB-C Powered Accessories, Medical and Health Monitoring Devices, IoT and Smart Home Devices.
Power Banks
The STUSB4531BJR fits power bank sink-side charging because its dead battery mode runs the controller directly from the VBUS receptacle pins, so the unit can negotiate a USB PD contract even at 0% state of charge. In a typical design the controller sits between the USB-C receptacle and the battery charger IC, negotiating up to five PDOs (for example 5V, 9V, 12V, 15V, 18V profiles) and instructing the charger to draw the agreed power. Because negotiation is handled in hardware via internal NVM settings, no firmware is needed, reducing BOM software cost. The 23 V VBUS tolerance protects against source voltage transients during contract renegotiation.
推荐
Portable and Wearable Devices
Wearables and portable electronics benefit from the STUSB4531BJR's autonomous operation: the 16-pin CSP chip-scale package minimizes PCB area in space-constrained designs, and autorun mode negotiates high-power charging profiles without waking the application processor, preserving battery life. In a typical application the controller draws operating power from VBUS, negotiates the optimal PDO with the charger, and signals the power path management IC to route the negotiated voltage. Dead battery mode is essential for consumer devices that must charge from empty out of the box. The -40C to +105C range also covers outdoor wearable use.
推荐
Battery-Powered Industrial Sensors
Industrial sensor nodes using USB-C service ports benefit from the STUSB4531BJR's -40C to +105C operating range and 23 V VBUS tolerance, which withstands harsh field conditions and unknown charger quality. The controller autonomously negotiates the fastest available PDO from field chargers and docks without MCU intervention, so a technician can fast-charge or power a sensor node from any USB-PD source. Because PDO settings live in internal non-volatile memory, fleet configuration can be set at production. Dead battery mode guarantees the node responds to charging even after deep discharge during long storage periods.
推荐
USB-C Powered Accessories
Accessories such as portable displays, desk gadgets, and powered hubs draw all operating power from a USB-C port. The STUSB4531BJR negotiates up to five configurable PDOs so the accessory can request exactly the voltage its internal DC-DC converters need, for example 15V or 18V for higher-power designs. Autorun mode means the accessory works the moment it is plugged in, with no driver or firmware handshake, improving perceived quality. Hybrid mode optionally lets a product MCU monitor the contract for user-facing power indicators while the STUSB4531 keeps autonomous control of the PD protocol.
推荐
Medical and Health Monitoring Devices
Battery-powered home health devices such as glucose meters, pulse oximeters, and thermometers require guaranteed charging behavior: a device that arrives or returns with an empty battery must still charge. The STUSB4531BJR's dead battery mode, powered directly from the VBUS receptacle pins, satisfies this requirement by negotiating USB PD power independently of the battery's state of charge. The small 16-pin CSP conserves board space in compact handheld enclosures, and the fully hardware-based negotiation removes firmware failure modes from the charging path, supporting the reliability expectations of medical device designs.
推荐
IoT and Smart Home Devices
USB-C is becoming the standard service port for smart home devices including doorbells, sensors, and controllers. The STUSB4531BJR lets these products fast-charge from standard USB-PD wall adapters by autonomously requesting an appropriate PDO, for example 9V, instead of defaulting to 5V at lower power. With configuration in internal NVM and zero software dependency, OEMs deploy the same controller across product families with different power levels by simply programming the PDO set at manufacturing. Dead battery mode ensures a deeply discharged device revives cleanly on first plug-in, reducing warranty returns.
推荐
推荐产品汇总
工程参考数据： STUSB4531BJR ——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 | STUSB4531QTR |
|---|---|---|
| Package | 16-pin CSP | 16-pin CSP - same |
| Brand | STMicroelectronics | STMicroelectronics |
| USB PD Role | Sink | Sink |
| Configurable PDOs | Up to 5 | Up to 5 |
| VBUS Rating | 23 V | 23 V |
| Dead Battery Mode | Yes | Yes |
| Operating Temperature | -40C to +105C | -40C to +105C |
| Autorun / Hybrid Modes | Yes / Yes | Yes / Yes |
关键差异点
- Dead battery operation from VBUS receptacle power （对比 STUSB4500)
- Five configurable PDOs with no firmware （对比 Generic MCU-based PD sink stack)
- 23 V VBUS tolerance in a 16-pin CSP （对比 STUSB4531QTR)
设计说明
The STUSB4531BJR is powered directly from the VBUS receptacle pins per the ST datasheet, which is what enables dead battery operation at SOC = 0%. Ensure the VBUS feed to the IC follows the datasheet reference design, including recommended series resistance and ceramic decoupling close to the VBUS pin, so hot-plug inrush and cable discharge transients do not disturb the 23 V-rated pin. Verify downstream charger IC enable thresholds against the lowest negotiated PDO voltage.
The 16-pin CSP has a very fine ball pitch; use the exact land pattern from the ST datasheet and inspect with appropriate solder-mask-defined pads. Route CC1/CC2 as a matched pair with the datasheet-specified series resistors and keep them short and away from switching nodes to preserve USB PD BMC communication integrity on the CC line. Provide local ground return under the CSP for signal integrity.
Do not assume the STUSB4531 will negotiate beyond the PDO set programmed in its internal non-volatile memory - the source can only offer, and the sink only accepts, PDOs contained in that stored configuration. For custom profiles, program the NVM at production. Also remember that only the BJR and QTR variants support dead battery mode; other orderable variants of the family may not, so confirm the suffix before release.
合规信息
Mouser listing identifies STUSB4531BJR as RoHS compliant and active. Other compliance declarations not captured in verified data; obtain certificates from the ST product page.
