TPS3430WDRCR - Window Watchdog Timer, 3x3 VSON | Texas Instruments
MPN： TPS3430WDRCR ✓ 啟用中TPS3430WDRCR 概覽
A window watchdog timer is a system-protection IC within the processor-supervisor and embedded-control ecosystem. Unlike a simple timeout timer, a window watchdog checks both how quickly service arrives and whether service arrives too early. This dual-window behavior helps detect a processor that has stopped responding, is executing too slowly, or is repeatedly restarting. The TPS3430 family is therefore useful in embedded systems, industrial controllers, communications equipment, and other designs where a stuck firmware loop could damage system behavior.
Verified manufacturer information highlights programmable watchdog-window behavior, programmable watchdog reset delay, and 2.5% typical timing accuracy at 25°C. The reset delay can use factory-programmed default settings or an external capacitor. The watchdog can also be disabled through the SET pins to prevent unwanted timeouts during development or power-on. These features support flexible reset policies while keeping the external circuit compact.
The TPS3430WDRCR operates as a monitoring and fault-detection device rather than as the primary power regulator. Its watchdog function depends on the monitored system periodically generating the expected service signal or edge. System designers must select the watchdog timing, reset polarity, and external capacitor values so normal operation remains inside the allowed window while a genuine failure produces a deterministic recovery action. The exact threshold voltage, supply-current limits, pin functions, and full timing ranges are not included in the supplied verified excerpts and are marked as data needed below.
Typical uses include monitoring an embedded controller, protecting an industrial control module during firmware execution, supervising a communications processor, and supervising a sensor or actuator controller. It can also support development boards where a recoverable watchdog fault is preferable to a complete power-cycle. The manufacturer lists the TPS3430 in a small 3.00 mm × 3.00 mm 10-pin VSON package, making it suitable for compact PCB layouts when the exposed-pad and thermal requirements are handled correctly.
For PCB implementation, place the device close to the monitored controller and route the watchdog input away from noisy switching nodes. Use a stable, decoupled supply and follow the manufacturer’s capacitor recommendations. Because the reset delay may be programmed with an external capacitor, verify capacitor tolerance and leakage requirements against the timing budget. The SET pins should be controlled deliberately during initialization so normal startup does not generate an unintended reset event.
This product page combines the verified Texas Instruments product description, distributor package identification, and practical engineering guidance. It also distinguishes the available verified facts from parameters that require confirmation in the complete manufacturer datasheet. Engineers should use the exact pinout and electrical limits from the datasheet before releasing a production design or approving a second-source replacement.
直接替換替代品，適用於 TPS3430WDRCR — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： TPS3430WDRCR （相同外形與佔位） — 差異在於 Package, Watchdog Reset Delay.
TPS3430WQDRCRQ1
✅ 直接替換聯絡詢價
查看資料表 →TPS3430WDRCR 規格
| Product Type | Standalone window watchdog timer |
| Watchdog Window | Programmable |
| Watchdog Reset Delay | Programmable; factory-programmed default delay or external capacitor |
| Typical Timing Accuracy | 2.5% at 25 °C |
| Watchdog Disable Control | SET pins can disable the watchdog |
| 工作溫度 | -40 °C to +125 °C |
| 封裝 | 10-pin VSON, 3.00 mm × 3.00 mm |
| 安裝類型 | Surface mount |
| Timing Control | External capacitor for programmable reset delay |
| Applications | Processor and controller supervision; embedded systems; industrial controls |
| Manufacturer Product Page | Texas Instruments TPS3430 |
TPS3430WDRCR 10-pin vson, 3.00 mm × 3.00 mm 腳位配置指南
TPS3430WDRCR（10-pin vson, 3.00 mm × 3.00 mm 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： TPS3430WDRCR.
請參閱 資料表 以查看完整腳位配置。
典型應用
TPS3430WDRCR 適用於 6 應用s: Embedded Processor Supervision, Industrial Control Module, Communications Equipment, Sensor and Actuator Controller, Development Board Bring-Up, Battery-Powered Embedded System.
Embedded Processor Supervision
The TPS3430WDRCR is suitable for supervising a microcontroller or application processor when the system must detect a stopped, delayed, or incorrectly timed service heartbeat. Its programmable watchdog window lets the designer define both an upper and lower timing boundary rather than relying only on a maximum timeout. The manufacturer verifies programmable window behavior, programmable reset delay, and 2.5% typical timing accuracy at 25 °C. Place the device close to the monitored controller, define the heartbeat timing to tolerate worst-case firmware latency, and route the reset-related output according to the system recovery architecture.
推薦
Industrial Control Module
The TPS3430WDRCR can protect industrial control electronics whose firmware must periodically report healthy execution. A window watchdog is useful in machinery, process controllers, and remote automation equipment because it can identify both a frozen task and an unexpectedly early heartbeat. The verified 3.00 mm × 3.00 mm 10-pin VSON package supports compact controller boards, while the -40 °C to +125 °C listed operating range supports designs evaluated across a broad temperature span. Validate watchdog timing against worst-case interrupt latency, startup behavior, and the safety response required by the machine controller.
推薦
Communications Equipment
The TPS3430WDRCR can monitor a communications controller that must service a protocol heartbeat within a controlled interval. In a communications module, an unexpected controller stall can cause packet loss, link renegotiation, or an unavailable service even when the supply rail remains present. The window-watchdog function provides a recovery trigger for this class of fault, and the programmable reset delay allows the reset policy to be adjusted independently of the service window. Confirm the exact reset polarity, supply range, and timing limits in the manufacturer datasheet before using the part on a new communication board.
推薦
Sensor and Actuator Controller
The TPS3430WDRCR can be used beside a sensor or actuator controller to detect a failed control loop and initiate a defined recovery sequence. This is valuable when an actuator must return to a safe state after firmware stops responding. The manufacturer confirms programmable watchdog-window and reset-delay behavior, allowing the monitoring period to reflect the controller’s expected update cycle. Use the SET pins carefully during sensor calibration and commissioning so development activity does not appear as a permanent fault. Confirm the exact watchdog input and output pin functions before final PCB routing.
推薦
Development Board Bring-Up
The TPS3430WDRCR is useful during embedded-board bring-up when the system needs a recoverable indication of firmware or controller lockup. Texas Instruments specifically states that the watchdog can be disabled through the SET pins to avoid undesired timeouts during development or power-on. This makes the SET control useful for a controlled bring-up sequence, provided the designer does not leave the watchdog disabled in production unintentionally. The verified package is compact enough for a controller board, but the exact pin names and exposed-pad requirements must be confirmed from the official datasheet.
推薦
Battery-Powered Embedded System
The TPS3430WDRCR can supervise a battery-powered embedded system where a controller fault must be recovered without relying on a manual power cycle. The monitor is independent of the system’s primary processing function and can provide a deterministic reset-related response when the expected heartbeat is missing or incorrectly timed. The verified operating-temperature listing reaches -40 °C to +125 °C, although the complete current consumption and supply limits remain data needed. Power-budget calculations should include the watchdog’s own supply current, timing capacitor leakage, and any reset-path load before selecting it for a low-energy design.
推薦
推薦產品摘要
工程參考資料，適用於 TPS3430WDRCR — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | TPS3430WQDRCRQ1 |
|---|---|---|
| Brand | Texas Instruments | Texas Instruments |
主要差異化特點
- Window-based fault detection (對比TPS3430WQDRCRQ1)
- Flexible reset-delay implementation (對比TPS3430WQDRCRQ1)
- Compact VSON implementation (對比TPS3430WQDRCRQ1)
設計說明
Place the TPS3430WDRCR close to the monitored controller and route the watchdog input away from switching nodes and high-current power paths. Keep the timing-capacitor connection short and use a stable ground reference. The manufacturer identifies a 3.00 mm × 3.00 mm 10-pin VSON package, so confirm the exposed-pad land pattern and thermal-via requirements directly from the official package drawing before release.
Validate the watchdog supply range, current consumption, and power sequencing against the monitored system. The supplied verified excerpts confirm the functional role and package but do not provide the complete electrical limits, so do not assume compatibility with a 3.3 V or 5 V rail without checking the datasheet. Add the local decoupling arrangement recommended by the manufacturer and confirm that reset transients cannot violate downstream device limits.
Do not select the SET-pin state informally. Texas Instruments states that the watchdog can be disabled through the SET pins during development or power-on, but leaving the watchdog disabled in production can remove the intended recovery protection. Define a deterministic boot and shutdown sequence, test firmware heartbeat timing under worst-case load, and verify that the reset-delay capacitor’s tolerance and leakage fit the system timing budget.
合規資訊
The supplied verified excerpts do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status for TPS3430WDRCR. The operating range of -40 °C to +125 °C is listed by LCSC, but it must not be treated as evidence of automotive qualification.
