TPS3430WDRCR - Window Watchdog Timer, 3x3 VSON | Texas Instruments
部品番号: TPS3430WDRCR ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $1.0794 | $1.08 |
| 10 | $1.0794 | $10.79 |
| 100 | $1.0794 | $107.94 |
| 500 | $1.0794 | $539.70 |
| 1,000 | $1.0794 | $1,079.40 |
TPS3430WDRCR 概要
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.
ドロップイン代替品: TPS3430WDRCR — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
クイック比較ツール — 並列比較する代替部品を選択:
TPS3430WQDRCRQ1
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TPS3430WDRCR 仕様
| 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 |
| 動作温度 | -40 °C to +125 °C |
| パッケージ | 10-pin VSON, 3.00 mm × 3.00 mm |
| 実装タイプ | 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 ピン配置ガイド
TPS3430WDRCR (10-pin vson, 3.00 mm × 3.00 mm パッケージ) のピン配置。 ピン番号、機能、接続図はメーカーのデータシートで定義されています。正確なフットプリントとはんだ付けのガイドラインについては、データシートを参照してください。
詳細なピン配置データはありません: TPS3430WDRCR.
詳細は データシート をご参照ください。
主な用途
TPS3430WDRCR の用途: 6 件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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
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.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: TPS3430WDRCR — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | TPS3430WQDRCRQ1 |
|---|---|---|
| Brand | Texas Instruments | Texas Instruments |
主な差別化要因
- Window-based fault detection （vs TPS3430WQDRCRQ1)
- Flexible reset-delay implementation （vs TPS3430WQDRCRQ1)
- Compact VSON implementation （vs TPS3430WQDRCRQ1)
設計ノート
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.
コンプライアンス情報
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.
