Specifications
| Type | Description |
|---|---|
| Part Number | TPS563231 |
| Manufacturer | Texas Instruments |
| Product Type | LDO Regulator |
| Category | Power Management |
| Package / Case | 6-pin SOT563 (DRL), 1.60 mm x 1.60 mm nominal body |
| Input Voltage Range | 4.5 to 17 V; recommended operating condition |
| Output Current | 3 A; converter rated output current |
| Output Voltage Range | 0.6 to 7 V; adjustable output range |
| Control Mode | D-CAP3 mode control; supports fast transient response and low-ESR output capacitors |
| Switching Frequency | 600 kHz; VIN=12 V, VOUT=3.3 V, CCM mode |
| High-Side Switch Resistance | 95 mOhm typ; TJ=25°C, VBST - VSW = 5 V |
| Low-Side Switch Resistance | 55 mOhm typ; TJ=25°C |
| Feedback Reference Voltage | 588 mV min, 600 mV typ, 612 mV max; VIN=4.5 V to 17 V, TJ=25°C |
| Feedback Reference Voltage | 600 mV typ; VIN=4.5 V to 17 V, TJ=-40°C to 125°C |
| Feedback Input Current | 0 nA typ, ±100 nA max; VFB=0.6 V |
| Operating Non-Switching Supply Current | 220 µA typ, 300 µA max; VIN=5 V, VEN=0.7 V |
| Shutdown Supply Current | 2 µA typ, 12 µA max; VEN=0 V |
| VIN UVLO Rising Threshold | 4.0 V min, 4.3 V typ; VIN undervoltage lockout |
| VIN UVLO Falling Threshold | 3.3 V min, 3.6 V typ; VIN undervoltage lockout |
| VIN UVLO Hysteresis | 0.4 V typ; VIN undervoltage lockout |
| EN High-Level Input Voltage | 1.10 V min, 1.24 V typ, 1.42 V max; EN pin rising threshold |
| EN Low-Level Input Voltage | 1.00 V min, 1.13 V typ, 1.30 V max; EN pin falling threshold |
| EN Pin Resistance to GND | 1000 kOhm typ; VEN=12 V |
| Low-Side FET Source Current Limit | 3 A min, 3.9 A typ, 4.8 A max; cycle-by-cycle overcurrent limit |
| Zero-Cross Current Detection | 0 A typ; low-side current zero-cross detection |
| Thermal Shutdown Threshold | 160°C typ; shutdown temperature, not production tested |
| Thermal Shutdown Hysteresis | 25°C typ; not production tested |
| Minimum On-Time | 80 ns typ; not production tested |
| Minimum Off-Time | 250 ns typ; VFB=0.5 V, not production tested |
| Soft-Start Time | 1.5 ms typ; internal soft-start time |
| Output UVP Falling Threshold | 65% typ; hiccup detect |
| UVP Propagation Delay | 0.8 ms typ; output undervoltage protection |
| Hiccup Time Before Restart | 24 ms typ; overcurrent/UVP hiccup restart timing |
| Operating Junction Temperature | -40°C to 125°C; recommended operating condition |
| Absolute Maximum VIN | -0.3 to 19 V; absolute maximum rating |
| Absolute Maximum BST | -0.3 to 24.5 V; absolute maximum rating |
| Absolute Maximum BST Transient | -0.3 to 26.5 V; 10 ns transient absolute maximum rating |
| Absolute Maximum BST to SW | -0.3 to 5.5 V; absolute maximum rating |
| Absolute Maximum FB | -0.3 to 5.5 V; absolute maximum rating |
| Absolute Maximum EN | -0.3 to VIN + 0.3 V; absolute maximum rating |
| Absolute Maximum SW | -2 to 19 V; absolute maximum rating |
| Absolute Maximum SW Transient | -3.5 to 21 V; 10 ns transient absolute maximum rating |
| Absolute Maximum Operating Junction Temperature | -40°C to 150°C; absolute maximum rating |
| Storage Temperature | -55°C to 150°C; absolute maximum rating |
| HBM ESD Rating | ±2000 V; ANSI/ESDA/JEDEC JS-001 |
| CDM ESD Rating | ±500 V; JEDEC JESD22-C101 |
| Junction-to-Ambient Thermal Resistance | 135.8°C/W; DRL package, 6 pins |
| Junction-to-Case Top Thermal Resistance | 45.5°C/W; DRL package, 6 pins |
| Junction-to-Board Thermal Resistance | 23.8°C/W; DRL package, 6 pins |
| Junction-to-Top Characterization Parameter | 1.2°C/W; DRL package, 6 pins |
| Junction-to-Board Characterization Parameter | 24.0°C/W; DRL package, 6 pins |
| Datasheet Status | request_only |
Product Overview
TPS563231 is a Texas Instruments synchronous step-down voltage regulator for Power_Management designs requiring conversion from a 4.5 to 17 V recommended input range to an adjustable 0.6 to 7 V output. The converter is rated for 3 A output current and uses D-CAP3 mode control, which is specified for fast transient response and operation with low-ESR output capacitors.
The device is supplied in a 6-pin SOT563 (DRL) package with a 1.60 mm x 1.60 mm nominal body. Electrical parameters include 600 kHz switching frequency under VIN=12 V, VOUT=3.3 V, CCM conditions, 95 mOhm typical high-side switch resistance, and 55 mOhm typical low-side switch resistance. Feedback regulation is centered at 600 mV, with 588 mV minimum and 612 mV maximum at TJ=25°C.
Protection and operating limits include VIN undervoltage lockout thresholds, cycle-by-cycle low-side FET source current limit, output undervoltage hiccup behavior, 160°C typical thermal shutdown, and 25°C typical thermal shutdown hysteresis. Thermal data for the DRL package includes 135.8°C/W junction-to-ambient resistance and 23.8°C/W junction-to-board resistance.
Key Features
- 4.5 to 17 V recommended input range
- 3 A converter rated output current
- 0.6 to 7 V adjustable output range
- D-CAP3 mode control for fast transient response
- Supports low-ESR output capacitors with D-CAP3 control
- 600 kHz switching frequency in stated CCM condition
- 95 mOhm typical high-side switch resistance
- 55 mOhm typical low-side switch resistance
- 1.5 ms typical internal soft-start time
- Cycle-by-cycle low-side FET overcurrent limit
- Output UVP hiccup restart timing specified
- -40°C to 125°C operating junction range
Typical Applications
- Point-of-load step-down rails
- Distributed power conversion
- Low-voltage adjustable output rails
- Compact 6-pin SOT563 power designs
- Systems using low-ESR output capacitors
- 3 A synchronous buck regulation
Procurement Notes
When requesting a quote for TPS563231, 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 TPS563231 support?
TPS563231 is specified for a 4.5 to 17 V input voltage range under recommended operating conditions. Absolute maximum VIN is listed separately as -0.3 to 19 V and should not be treated as the operating range.
What output current and output voltage range are specified?
The converter rated output current is 3 A. The output voltage range is adjustable from 0.6 to 7 V, with feedback regulation based on a 600 mV typical reference voltage.
What control mode does TPS563231 use?
TPS563231 uses D-CAP3 mode control. The extracted datasheet facts state that this control mode supports fast transient response and operation with low-ESR output capacitors.
What package is used for TPS563231?
TPS563231 is provided in a 6-pin SOT563 package, identified as the DRL package. The nominal body size is 1.60 mm by 1.60 mm.
What protection timing is specified for undervoltage conditions?
Output undervoltage protection includes a 65% typical falling threshold, 0.8 ms typical UVP propagation delay, and 24 ms typical hiccup time before restart for overcurrent or UVP events.
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.