Specifications
| Type | Description |
|---|---|
| Part Number | TPS5401 |
| Manufacturer | Texas Instruments |
| Product Type | LDO Regulator |
| Category | Power Management |
| Package / Case | 10-pin MSOP PowerPAD (DGQ), 3.00 mm x 3.00 mm nominal body |
| Input Voltage Range | 3.5-42 V; VIN pin recommended operating range |
| Output Current | 0-0.5 A; recommended operating conditions |
| Output Voltage Range | 0.8-39 V; recommended operating conditions |
| Operating Junction Temperature | -40 to 150 °C; recommended operating conditions |
| Internal UVLO Threshold | 2.5 V; no voltage hysteresis, rising and falling |
| Shutdown Supply Current | 1.3 µA typ, 4 µA max; VEN = 0 V |
| Operating Non-switching Supply Current | 116 µA typ, 136 µA max; VSENSE = 0.83 V, VIN = 12 V, TA = 25°C |
| Enable Threshold Voltage | 0.9 V min, 1.25 V typ, 1.55 V max; no voltage hysteresis, rising and falling, 25°C |
| EN Input Current | -3.8 µA; enable threshold + 50 mV |
| EN Input Current | -0.9 µA; enable threshold - 50 mV |
| EN Hysteresis Current | -2.9 µA; EN pin |
| Voltage Reference | 0.772 V min, 0.8 V typ, 0.828 V max; TJ = -40°C to 150°C, VIN = 3.5 V to 42 V |
| High-side MOSFET On-resistance | 300 mΩ typ; VIN = 3.5 V, VBOOT - VPH = 3 V |
| High-side MOSFET On-resistance | 200 mΩ typ, 410 mΩ max; VIN = 12 V, VBOOT - VPH = 6 V |
| Error Amplifier Input Current | 50 nA; error amplifier |
| Error Amplifier Transconductance | 97 µMhos; -2 µA < ICOMP < 2 µA, VCOMP = 1 V |
| Error Amplifier Transconductance During Slow-start | 26 µMhos; -2 µA < ICOMP < 2 µA, VCOMP = 1 V, VSENSE = 0.4 V |
| Error Amplifier DC Gain | 10000 V/V; VSENSE = 0.8 V |
| Error Amplifier Bandwidth | 2700 kHz; error amplifier |
| Error Amplifier Source/Sink Current | ±7 µA; VCOMP = 1 V, 100 mV overdrive |
| COMP-to-switch Current Transconductance | 1.9 A/V; power stage transconductance |
| Current Limit Threshold | 0.6 A min, 0.94 A typ; VIN = 12 V, TJ = 25°C |
| Thermal Shutdown | 182 °C; thermal shutdown threshold |
| Switching Frequency Range Using RT Mode | 100-2500 kHz; RT/CLK pin resistor mode |
| Switching Frequency | 450 kHz min, 581 kHz typ, 720 kHz max; RT = 200 kΩ |
| Switching Frequency Range Using CLK Mode | 300-2200 kHz; external clock synchronization mode |
| Minimum CLK Input Pulse Width | 40 ns; RT/CLK pin |
| RT/CLK High Threshold | 1.9 V min, 2.2 V max; RT/CLK pin |
| RT/CLK Low Threshold | 0.5 V min, 0.7 V max; RT/CLK pin |
| RT/CLK Falling Edge to PH Rising Edge Delay | 60 ns; measured at 500 kHz with RT resistor in series |
| PLL Lock-in Time | 100 µs; measured at 500 kHz |
| SS/TR Charge Current | 2 µA; VSS/TR = 0.4 V |
| SS/TR-to-VSENSE Matching | 45 mV; VSS/TR = 0.4 V |
| SS/TR-to-reference Crossover | 1 V; 98% nominal |
| SS/TR Discharge Current During Overload | 112 µA; VSENSE = 0 V, VSS/TR = 0.4 V |
| SS/TR Discharge Voltage | 54 mV; VSENSE = 0 V |
| Power Good VSENSE Low Threshold | 92% of Vref falling, 94% of Vref rising; PWRGD pin |
| Power Good VSENSE High Threshold | 109% of Vref rising, 107% of Vref falling; PWRGD pin |
| Power Good Threshold Hysteresis | 2%; VSENSE falling |
| PWRGD Output-high Leakage | 10 nA; VSENSE = Vref, VPWRGD = 5.5 V, 25°C |
| PWRGD On-resistance | 50 Ω; IPWRGD = 3 mA, VSENSE < 0.77 V |
| Minimum VIN for Defined PWRGD Output | 0.95 V min, 1.5 V max; VPWRGD < 0.5 V, IPWRGD = 100 µA |
| Junction-to-ambient Thermal Resistance | 65.0 °C/W; DGQ 10-pin package |
| Junction-to-case Top Thermal Resistance | 48.0 °C/W; DGQ 10-pin package |
| Junction-to-board Thermal Resistance | 38.2 °C/W; DGQ 10-pin package |
| Junction-to-case Bottom Thermal Resistance | 13.6 °C/W; DGQ 10-pin package |
| Human Body Model ESD Rating | ±1000 V; ANSI/ESDA/JEDEC JS-001, all pins |
| Charged Device Model ESD Rating | ±500 V; JEDEC JESD22-C101, all pins |
| VIN Absolute Maximum Voltage | -0.3 to 47 V; absolute maximum rating |
| PH Absolute Maximum Output Voltage | -0.6 to 47 V; absolute maximum rating |
| Datasheet Status | request_only |
Product Overview
The TPS5401 is a Texas Instruments Power_Management power IC configured as a step-down DC-DC converter. Its recommended VIN range is 3.5-42 V, with a 0-0.5 A output current range and 0.8-39 V output voltage range. The voltage reference is specified at 0.772 V minimum, 0.8 V typical, and 0.828 V maximum across -40 °C to 150 °C junction temperature and 3.5 V to 42 V VIN.
The device uses a 10-pin MSOP PowerPAD (DGQ) package with a 3.00 mm x 3.00 mm nominal body. Package thermal data includes 65.0 °C/W junction-to-ambient resistance, 48.0 °C/W junction-to-case top resistance, 38.2 °C/W junction-to-board resistance, and 13.6 °C/W junction-to-case bottom resistance.
Control and protection functions include a 2.5 V internal UVLO threshold, enable threshold range from 0.9 V to 1.55 V, current limit threshold of 0.6 A minimum and 0.94 A typical, and 182 °C thermal shutdown. The RT/CLK pin supports 100-2500 kHz resistor-mode switching frequency and 300-2200 kHz external clock synchronization.
Key Features
- 3.5-42 V recommended VIN operating range
- 0-0.5 A recommended output current range
- 0.8-39 V recommended output voltage range
- -40 to 150 °C operating junction temperature
- 100-2500 kHz RT resistor-mode switching range
- 300-2200 kHz external clock synchronization range
- 0.8 V typical voltage reference
- Power-good thresholds monitor VSENSE window
- 2 µA SS/TR charge current for slow-start
- 182 °C thermal shutdown threshold
Typical Applications
- Step-down DC-DC conversion
- Wide-input voltage regulation
- 0.5 A regulated power rails
- Externally synchronized converter designs
- Power-good monitored supplies
- Slow-start or tracking supply rails
- Compact MSOP PowerPAD assemblies
Procurement Notes
When requesting a quote for TPS5401, 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 does the TPS5401 support?
The TPS5401 has a recommended VIN pin operating range of 3.5-42 V. Its VIN absolute maximum voltage rating is -0.3 to 47 V, based on the extracted manufacturer datasheet facts.
What output current and voltage ranges are specified?
The recommended operating conditions specify 0-0.5 A output current and a 0.8-39 V output voltage range. These values describe the extracted datasheet operating limits for the step-down DC-DC converter.
What package is used for the TPS5401?
The TPS5401 is listed in a 10-pin MSOP PowerPAD (DGQ) package with a 3.00 mm x 3.00 mm nominal body. Thermal resistance values are specified for the DGQ 10-pin package.
Can the TPS5401 switching frequency be synchronized externally?
Yes. The RT/CLK pin supports an external clock synchronization mode with a switching frequency range of 300-2200 kHz. The extracted facts also specify a 40 ns minimum CLK input pulse width.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 20, 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.