Specifications
| Type | Description |
|---|---|
| Part Number | TPS65263 |
| Manufacturer | Texas Instruments |
| Product Type | LDO Regulator |
| Category | Power Management |
| Package / Case | RHB (VQFN, 32), 5.00 mm x 5.00 mm |
| Input Voltage Range | 4.5 to 18 V |
| Output Current | 3 A / 2 A / 2 A |
| VID Programmable Output Voltage Range | 0.68 to 1.95 V |
| VID Resolution | 10 mV |
| VID Control Width | 7 bits |
| VID Slew Rate Control Width | 3 bits |
| I2C Standard Mode Frequency | 100 kHz |
| I2C Fast Mode Frequency | 400 kHz |
| Feedback Reference Voltage | 0.6 V +/-1% |
| Switching Frequency | 600 kHz |
| Buck Phase Relationship | 180 degrees out-of-phase between buck1 and buck2/buck3 |
| Supported Power Buses | 5 V, 9 V, 12 V, 15 V |
| Control Mode | Constant frequency peak current mode |
| Light Load Modes | Pulse skipping mode or forced continuous current mode |
| Protection Features | Overvoltage, overcurrent, short-circuit, overtemperature |
| I2C Readback Status | Power-good status, overcurrent warning, die temperature warning |
| PVIN/VIN Absolute Maximum Voltage | -0.3 to 20 V |
| LX Absolute Maximum Voltage | -1.0 to 20 V |
| BST-to-LX Absolute Maximum Voltage | -0.3 to 7 V |
| Logic and Output Sense Absolute Maximum Voltage | -0.3 to 7 V |
| Analog Pin Absolute Maximum Voltage | -0.3 to 3.6 V |
| Ground Pin Absolute Maximum Voltage | -0.3 to 0.3 V |
| Operating Junction Temperature | -40 to 125 degC |
| Storage Temperature Range | -55 to 150 degC |
| ESD HBM Rating | -2000 to 2000 V |
| ESD CDM Rating | -500 to 500 V |
| Soft-Start Pullup Current | 5 uA |
| Bootstrap Capacitor Recommendation | 47 nF |
| PVIN Input Capacitor Suggestion | 10 uF |
| V7V Capacitor Recommendation | 10 uF |
| Datasheet Status | request_only |
Product Overview
TPS65263 is a Texas Instruments triple synchronous buck converter for Power_Management designs requiring three regulated rails from an intermediate input bus. Its operating input voltage range is 4.5 to 18 V, covering 5 V, 9 V, 12 V, and 15 V bus applications.
The device provides continuous output currents of 3 A / 2 A / 2 A across buck1 / buck2 / buck3. Each buck uses constant-frequency peak-current-mode control at a fixed 600 kHz switching frequency. Buck1 operates 180 degrees out of phase with buck2 and buck3, while buck2 and buck3 run in phase.
Output voltage programming is handled through an I2C-compatible interface supporting 100 kHz standard mode and 400 kHz fast mode. Each buck has a 7-bit VID range of 0.68 to 1.95 V in 10 mV steps, plus 3-bit programmable slew-rate control for voltage transitions.
The device is supplied in an RHB (VQFN, 32), 5.00 mm x 5.00 mm package. External component guidance includes 47 nF bootstrap capacitors, 10 uF PVIN ceramic capacitors, and a 10 uF V7V capacitor to power ground.
Key Features
- Triple synchronous buck converter architecture
- 4.5 to 18 V operating input range
- 3 A / 2 A / 2 A continuous outputs
- I2C VID programming from 0.68 to 1.95 V
- 10 mV VID resolution with 7-bit control
- 3-bit programmable voltage transition slew rate
- 100 kHz standard and 400 kHz fast I2C modes
- Fixed 600 kHz peak-current-mode operation
- Pulse-skipping or forced continuous-current light-load modes
- Overvoltage, overcurrent, short-circuit, overtemperature protection
- I2C readback for power-good and warning status
- RHB 32-pin VQFN, 5.00 mm x 5.00 mm package
Typical Applications
- 5 V intermediate bus rails
- 9 V intermediate bus rails
- 12 V intermediate bus rails
- 15 V intermediate bus rails
- Multi-rail power management
- I2C programmable point-of-load supplies
- Triple buck converter power stages
- Compact VQFN power designs
Procurement Notes
When requesting a quote for TPS65263, 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 TPS65263 support?
TPS65263 operates from a 4.5 to 18 V input voltage range. This range encompasses common intermediate power buses including 5 V, 9 V, 12 V, and 15 V.
How much output current is available from each buck converter?
The three synchronous buck outputs are rated for continuous output currents of 3 A / 2 A / 2 A for buck1, buck2, and buck3 respectively.
How is the TPS65263 output voltage programmed?
Each buck supports I2C-controlled VID output voltage programming from 0.68 to 1.95 V. The VID control width is 7 bits, with 10 mV resolution.
What I2C interface speeds are supported by TPS65263?
The I2C-compatible interface supports 100 kHz standard mode and 400 kHz fast mode. I2C is used for output-voltage programming, slew-rate control, light-load mode selection, and status readback.
What protection features are listed for TPS65263?
The device includes overvoltage, overcurrent, short-circuit, and overtemperature protection. I2C readback can report power-good status, overcurrent warning, and die temperature warning.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 25, 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.