Specifications
| Type | Description |
|---|---|
| Part Number | TPS3430 |
| Manufacturer | Texas Instruments |
| Product Type | LDO Regulator |
| Category | Power Management |
| Package / Case | VSON-10 (DRC), 3.00 mm x 3.00 mm |
| Component Type | Power_IC |
| Supply Voltage Range | 1.6 to 6.5 V; recommended operating conditions, VDD1 and VDD2 |
| Watchdog Timeout Accuracy | ±2.5%; typical at 25°C |
| Supply Current | 10 µA typ, 19 µA max; 1.6 V ≤ VDD ≤ 6.5 V, -40°C ≤ TJ ≤ 125°C |
| Power-On Reset Voltage | 0.8 V typ; VOL(max) = 0.25 V |
| CRST Pin Charge Current | 337 nA min, 375 nA typ, 413 nA max; CRST = 0.5 V |
| CRST Pin Threshold Voltage | 1.192 V min, 1.21 V typ, 1.228 V max; 1.6 V ≤ VDD ≤ 6.5 V, -40°C ≤ TJ ≤ 125°C |
| CWD Pin Charge Current | 347 nA min, 375 nA typ, 403 nA max; CWD = 0.5 V |
| CWD Pin Threshold Voltage | 1.196 V min, 1.21 V typ, 1.224 V max; 1.6 V ≤ VDD ≤ 6.5 V, -40°C ≤ TJ ≤ 125°C |
| WDO Output Low Voltage | 0.4 V max; VDD = 5 V, ISINK = 3 mA |
| WDO Output Leakage Current | 1 µA max; VDD = 1.6 V, VWDO = 6.5 V |
| SET0/SET1 Low-Level Input Voltage | 0.25 V max; SET0, SET1 logic inputs |
| SET0/SET1 High-Level Input Voltage | 0.8 V min; SET0, SET1 logic inputs |
| WDI Low-Level Input Voltage | 0.3 x VDD max; WDI input |
| WDI High-Level Input Voltage | 0.8 x VDD min; WDI input |
| CRST Reset Delay Capacitor Range | 0.1 to 1000 nF; recommended operating conditions |
| CWD Watchdog Timing Capacitor Range | 0.1 to 1000 nF; recommended operating conditions |
| CRST Pull-Up Resistor to VDD | 9 kΩ min, 10 kΩ nom, 11 kΩ max; recommended operating conditions |
| CWD Pull-Up Resistor to VDD | 9 kΩ min, 10 kΩ nom, 11 kΩ max; recommended operating conditions |
| WDO Pull-Up Resistor | 1 kΩ min, 10 kΩ nom, 100 kΩ max; recommended operating conditions |
| Watchdog Output Current | 10 mA max; recommended operating conditions, WDO |
| Junction Temperature Range | -40°C to 125°C; recommended operating conditions |
| Operating Free-Air Temperature Absolute Maximum | -40°C to 150°C; absolute maximum ratings |
| Storage Temperature Range | -65°C to 150°C; absolute maximum ratings |
| Supply Voltage Absolute Maximum | -0.3 to 7 V; VDD1, VDD2 |
| WDO Output Voltage Absolute Maximum | -0.3 to 7 V; absolute maximum ratings |
| SET0, SET1, WDI, CWD, CRST Voltage Absolute Maximum | -0.3 to 7 V or VDD + 0.3 V, whichever is smaller; absolute maximum ratings |
| WDO Output Pin Current Absolute Maximum | ±20 mA; absolute maximum ratings |
| Input Current Absolute Maximum | ±20 mA; all pins |
| ESD Rating HBM | ±4000 V; human-body model per ANSI/ESDA/JEDEC JS-001 |
| ESD Rating CDM | ±1000 V; charged-device model per JEDEC JESD22-C101 |
| Junction-to-Ambient Thermal Resistance | 50.9°C/W; DRC VSON package, 10 pins |
| Junction-to-Case Top Thermal Resistance | 50.6°C/W; DRC VSON package, 10 pins |
| Junction-to-Board Thermal Resistance | 25.4°C/W; DRC VSON package, 10 pins |
| Junction-to-Top Characterization Parameter | 1.2°C/W; DRC VSON package, 10 pins |
| Junction-to-Board Characterization Parameter | 25.5°C/W; DRC VSON package, 10 pins |
| Junction-to-Case Bottom Thermal Resistance | 7.3°C/W; DRC VSON package, 10 pins |
| Datasheet Status | request_only |
Product Overview
TPS3430 is a Texas Instruments Power_Management IC identified as a window watchdog timer. The device operates from recommended VDD1 and VDD2 supply rails of 1.6 to 6.5 V and is specified with 10 µA typical, 19 µA maximum supply current over 1.6 V to 6.5 V and -40°C to 125°C junction temperature conditions.
Timing is configured with external CRST and CWD capacitors, each recommended from 0.1 to 1000 nF. The CRST and CWD pins use 375 nA typical charge currents and 1.21 V typical threshold voltages, supporting reset-delay and watchdog timing functions. The watchdog timeout accuracy is ±2.5% typical at 25°C.
The TPS3430 is supplied in a VSON-10 (DRC), 3.00 mm x 3.00 mm package. Package thermal data includes 50.9°C/W junction-to-ambient resistance and 7.3°C/W junction-to-case bottom resistance. The WDO output supports a 10 mA maximum recommended watchdog output current and uses a recommended pull-up resistor range of 1 kΩ to 100 kΩ.
Key Features
- Window watchdog timer for Power_Management monitoring functions
- 1.6 to 6.5 V recommended VDD1 and VDD2 range
- ±2.5% typical watchdog timeout accuracy at 25°C
- 10 µA typical supply current over operating range
- CRST capacitor range supports 0.1 to 1000 nF
- CWD capacitor range supports 0.1 to 1000 nF
- WDO output low voltage is 0.4 V maximum
- WDI thresholds use 0.3 x VDD low and 0.8 x VDD high
- -40°C to 125°C recommended junction temperature range
- VSON-10 DRC package measures 3.00 mm x 3.00 mm
Typical Applications
- Power-management watchdog circuits
- Processor watchdog supervision
- Reset-delay timing circuits
- Low-current monitored systems
- VSON-10 compact board designs
- Systems using 1.6 to 6.5 V rails
- WDI input monitoring designs
Procurement Notes
When requesting a quote for TPS3430, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For power IC and power device sourcing, voltage rating, current rating, power dissipation, package thermal performance, protection features, qualification grade and application conditions should be reviewed before approval.
FAQ
What type of device is the TPS3430?
The TPS3430 is a Texas Instruments Power_Management device classified as a window watchdog timer. The extracted facts identify it as a Power_IC supplied in a VSON-10 (DRC), 3.00 mm x 3.00 mm package.
What supply voltage range does TPS3430 support?
Under recommended operating conditions, TPS3430 supports VDD1 and VDD2 supply voltages from 1.6 to 6.5 V. Its absolute maximum supply voltage rating for VDD1 and VDD2 is -0.3 to 7 V.
How are TPS3430 reset and watchdog timings configured?
The reset delay and watchdog timing use external capacitors on CRST and CWD. Both capacitor ranges are specified from 0.1 to 1000 nF under recommended operating conditions, with typical pin charge currents of 375 nA.
What temperature range is specified for TPS3430 operation?
The recommended junction temperature range for TPS3430 is -40°C to 125°C. The absolute maximum operating free-air temperature range is -40°C to 150°C, and the storage temperature range is -65°C to 150°C.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 7, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.