Specifications
| Type | Description |
|---|---|
| Part Number | TPS5430 |
| Manufacturer | Texas Instruments |
| Product Type | LDO Regulator |
| Category | Power Management |
| Component Type | Power_IC |
| Package / Case | DDA, 8-pin HSOIC PowerPAD thermally enhanced package |
| Input Voltage Range | 5.5 to 36 V; TPS5430 recommended operating condition |
| Input Voltage Range | 5.5 to 23 V; TPS5431 recommended operating condition |
| Output Current | 3 A continuous, 4 A peak; feature specification |
| Output Voltage Range | Adjustable down to 1.22 V; with 1.5% initial accuracy |
| Switching Frequency | 500 kHz typ, 400 kHz min, 600 kHz max; TJ=-40°C to 125°C, VIN=5.5 V to 36 V |
| Efficiency | Up to 95%; feature specification enabled by integrated 100 mΩ MOSFET |
| High-Side MOSFET On-Resistance | 100 mΩ typ, 230 mΩ max; VIN=12 V, VBOOT-SW=4.5 V |
| High-Side MOSFET On-Resistance | 125 mΩ typ; VIN=5.5 V, VBOOT-SW=4.0 V |
| Feedback Voltage | 1.202 V min, 1.221 V typ, 1.239 V max; TJ=25°C |
| Feedback Voltage | 1.196 V min, 1.221 V typ, 1.245 V max; TJ=-40°C to 125°C |
| VIN Quiescent Current | 2 mA typ, 4.4 mA max; non-switching, VSENSE=2 V, PH pin open |
| VIN Shutdown Supply Current | 15 µA typ, 50 µA max; shutdown, ENA=0 V |
| VIN UVLO Rising Threshold | 5.3 V typ, 5.5 V max; VVIN rising |
| VIN UVLO Hysteresis | 0.35 V typ; undervoltage lockout |
| Minimum ON Pulse Width | 150 ns typ, 200 ns max; TJ=-40°C to 125°C, VIN=5.5 V to 36 V |
| Maximum Duty Cycle | 87% min, 89% typ; fSW=500 kHz |
| ENA Rising Threshold | 1.3 V typ; device starts switching above threshold |
| ENA Falling Threshold | 0.5 V typ; device stops switching below threshold |
| ENA Hysteresis | 325 mV typ; enable pin |
| Internal Slow-Start Time | 5.4 ms min, 8 ms typ, 10 ms max; 0 to 100% |
| High-Side Peak Current Limit | 4.0 A min, 5.0 A typ, 6.0 A max; overcurrent protection |
| Hiccup Time Before Restart | 13 ms min, 16 ms typ, 20 ms max; overcurrent protection |
| Thermal Shutdown Threshold | 135°C min, 162°C typ; temperature rising; specified by design/statistical analysis |
| Thermal Shutdown Hysteresis | 14°C typ; specified by design/statistical analysis |
| Operating Junction Temperature | -40°C to 125°C; recommended operating condition |
| Absolute Maximum VIN to GND | -0.3 to 40 V; TPS5430 |
| Absolute Maximum VIN to GND | -0.3 to 25 V; TPS5431 |
| Absolute Maximum ENA to GND | -0.3 to 7 V; over operating junction temperature range |
| Absolute Maximum VSENSE to GND | -0.3 to 3 V; over operating junction temperature range |
| Absolute Maximum BOOT to PH | -0.3 to 6 V; bootstrap voltage; BOOT-PH capacitors must be rated at least 10 V |
| Absolute Maximum PH to GND Steady-State | -0.6 to 40 V; TPS5430 |
| Absolute Maximum PH to GND Steady-State | -0.6 to 25 V; TPS5431 |
| Absolute Maximum PH to GND Transient | -1.2 V min; transient less than 10 ns |
| PH Leakage Current | 10 µA max; source current PH leakage current |
| Absolute Maximum Operating Virtual Junction Temperature | -40°C to 150°C; TJ absolute maximum rating |
| Storage Temperature | -65°C to 150°C; Tstg absolute maximum rating |
| ESD Rating HBM | ±2000 V; human-body model per ANSI/ESDA/JEDEC JS-001 |
| ESD Rating CDM | ±750 V; charged-device model per JEDEC JESD22-C101 |
| Junction-to-Ambient Thermal Resistance | 45°C/W; DDA package, TPS5430EVM |
| Junction-to-Ambient Thermal Resistance | 42.3°C/W; DDA package, JESD 51-7, 4-layer JEDEC board |
| Junction-to-Case Top Thermal Resistance | 46°C/W; DDA package |
| Junction-to-Board Thermal Resistance | 15°C/W; DDA package |
| Junction-to-Top Characterization Parameter | 5.2°C/W; DDA package |
| Junction-to-Board Characterization Parameter | 15.3°C/W; DDA package |
| Junction-to-Case Bottom Thermal Resistance | 6°C/W; DDA package |
| Control Method | Constant-frequency voltage-mode control; with voltage feedforward |
| Integrated Power Switch | High-side N-channel MOSFET; integrated in TPS543x converter |
| Datasheet Status | request_only |
Product Overview
The TPS5430 is a Texas Instruments 3A step-down buck converter for Power_Management designs requiring conversion from a 5.5 to 36 V input range. It integrates a high-side N-channel MOSFET and uses constant-frequency voltage-mode control with voltage feedforward. The output is adjustable down to 1.22 V with 1.5% initial accuracy, and the converter supports 3 A continuous output current with 4 A peak capability.
Switching operation is specified at 500 kHz typical, with a 400 kHz minimum and 600 kHz maximum across the stated junction temperature and input-voltage range. The integrated MOSFET supports up to 95% efficiency and has specified on-resistance values of 100 mΩ typical at VIN = 12 V and 125 mΩ typical at VIN = 5.5 V.
The DDA, 8-pin HSOIC PowerPAD thermally enhanced package supports thermal paths including 42.3°C/W junction-to-ambient on a JESD 51-7 board and 6°C/W junction-to-case bottom. Protection and control functions include VIN UVLO, ENA thresholds, 8 ms typical internal slow-start, high-side peak current limit, hiccup restart timing, and thermal shutdown with hysteresis.
Key Features
- 3 A continuous output, 4 A peak capability
- 5.5 to 36 V TPS5430 input range
- Adjustable output voltage down to 1.22 V
- 500 kHz typical fixed switching frequency
- Up to 95% efficiency with integrated MOSFET
- High-side N-channel MOSFET integrated power switch
- Constant-frequency voltage-mode control with voltage feedforward
- Internal slow-start time of 8 ms typical
- High-side peak current limit, 5.0 A typical
- Thermal shutdown threshold, 162°C typical
Typical Applications
- Step-down DC-DC conversion
- Power_Management converter rails
- Adjustable low-voltage supplies
- 3 A regulated output rails
- Systems using 5.5 to 36 V input
- Thermally enhanced HSOIC designs
- Enabled shutdown power rails
Procurement Notes
When requesting a quote for TPS5430, 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 input voltage range is specified for TPS5430?
For TPS5430 recommended operating conditions, the input voltage range is 5.5 to 36 V. The extracted facts also list TPS5431 separately with a 5.5 to 23 V recommended operating range.
What output current can the TPS5430 support?
The feature specification lists 3 A continuous output current and 4 A peak output current. The high-side peak current limit is specified at 4.0 A minimum, 5.0 A typical, and 6.0 A maximum.
What control method does the TPS5430 use?
The converter uses constant-frequency voltage-mode control with voltage feedforward. The switching frequency is specified as 500 kHz typical, with 400 kHz minimum and 600 kHz maximum over the listed conditions.
What package is used for the TPS5430?
The package case is DDA, an 8-pin HSOIC PowerPAD thermally enhanced package. Thermal data includes 42.3°C/W junction-to-ambient on a JESD 51-7 four-layer JEDEC board and 6°C/W junction-to-case bottom.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 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.