Specifications
| Type | Description |
|---|---|
| Part Number | TPS65270 |
| Manufacturer | Texas Instruments |
| Product Type | LDO Regulator |
| Category | Power Management |
| Package / Case | 24-lead thermally enhanced HTSSOP (PWP) 7.80 mm x 4.40 mm; 24-lead VQFN (RGE) 4.00 mm x 4.00 mm |
| Component Type | Power_IC |
| Input Supply Voltage Range | 4.5 to 18 V |
| Reference Voltage Accuracy | 0.8 V, +/-1% |
| Buck1 Maximum Continuous Output Current | 2 A |
| Buck2 Maximum Continuous Output Current | 3 A |
| Adjustable Switching Frequency Range | 300 kHz to 1.4 MHz |
| Output Voltage Capability | Up to 15 V |
| Phase Operation | 180 degrees out-of-phase |
| Control Architecture | Constant-frequency peak current-mode control |
| Light Load Mode | Pulse skipping mode |
| Absolute Maximum Voltage on VIN1, VIN2, LX1, LX2 | -0.3 to 20 V |
| Absolute Maximum Transient Voltage on LX1, LX2 | -1 to 23 V |
| Absolute Maximum BST1/BST2 Voltage | -0.3 to 7 V |
| Absolute Maximum VCC, EN1, EN2, COMP1, COMP2, LOW_P Voltage | -0.3 to 7 V |
| Absolute Maximum SS1, SS2, FB1, FB2, ROSC Voltage | -0.3 to 3.6 V |
| Absolute Maximum AGND/GND Voltage | -0.3 to 0.3 V |
| Operating Virtual Junction Temperature | -40 to 150 °C |
| Storage Temperature | -55 to 150 °C |
| HBM ESD Rating | +/-2000 V |
| CDM ESD Rating | +/-500 V |
| Recommended Input Operating Voltage | 4.5 to 18 V |
| Recommended Junction Temperature | -40 to 125 °C |
| Junction-to-Ambient Thermal Resistance | 41.3 °C/W PWP; 33.8 °C/W RGE |
| Junction-to-Case Top Thermal Resistance | 23.9 °C/W PWP; 36.2 °C/W RGE |
| Junction-to-Board Thermal Resistance | 22.6 °C/W PWP; 12.1 °C/W RGE |
| Junction-to-Case Bottom Thermal Resistance | 4 °C/W PWP; 2.5 °C/W RGE |
| Shutdown Current | 10 µA |
| Nonswitching Quiescent Supply Current | 1 mA |
| VIN Undervoltage Lockout Rising Threshold | 4.0 V min, 4.2 V typ, 4.45 V max |
| VIN Undervoltage Lockout Falling Threshold | 3.65 V min, 3.85 V typ, 4.1 V max |
| VIN Undervoltage Lockout Hysteresis | 0.35 V typ |
| Internal Bias Supply Voltage | 6.25 V typ |
| VCC LDO Dropout Voltage | 180 mV typ |
| VCC Current Limit | 200 mA typ |
| Regulated Feedback Voltage at 25 °C | 0.8 V typ, -1% min, +1% max |
| Regulated Feedback Voltage Over Temperature | 0.8 V typ, -2% min, +2% max |
| DC Line Regulation | 0.5 %/V typ |
| DC Load Regulation | 0.4 %/A typ |
| Error Amplifier Transconductance | 130 µS typ |
| COMP Voltage to Inductor Current Transconductance | 10 A/V typ |
| EN1 and EN2 Rising Threshold | 1.55 V typ |
| EN1 and EN2 Falling Threshold | 0.4 V max |
| PSM Low Power Mode Rising Threshold | 1.55 V typ |
| PSM Low Power Mode Falling Threshold | 0.4 V max |
| Soft-Start Charging Current | 5 µA typ |
| Programmable Switching Frequency | 0.3 to 1.4 MHz |
| Switching Frequency at ROSC 250 kOhm | 0.85 MHz min, 1 MHz typ, 1.15 MHz max |
| Switching Frequency at ROSC 500 kOhm | 425 kHz min, 500 kHz typ, 575 kHz max |
| Buck1 Peak Inductor Current Limit | 3.2 A typ |
| Datasheet Status | request_only |
Product Overview
The TPS65270 is a Texas Instruments Power_Management IC configured as a dual synchronous step-down regulator. It supports an operating input range of 4.5 to 18 V, with each converter capable of generating output voltages up to 15 V. Buck1 is rated for 2 A maximum continuous output current, while Buck2 is rated for 3 A maximum continuous output current.
The regulator uses constant-frequency peak current-mode control and a precision 0.8 V feedback reference. Switching frequency is programmable from 300 kHz to 1.4 MHz using an external ROSC resistor, with specified frequency points at 250 kOhm and 500 kOhm. The two converter clock signals operate 180 degrees out of phase, and pulse skipping mode is available when LOW_P is active high at light load.
Package options include a 24-lead thermally enhanced HTSSOP (PWP) measuring 7.80 mm x 4.40 mm and a 24-lead VQFN (RGE) measuring 4.00 mm x 4.00 mm. Thermal resistance values are specified for junction-to-ambient, junction-to-case top, junction-to-board, and junction-to-case bottom paths.
Key Features
- 4.5 to 18 V recommended input operating range
- Dual synchronous buck outputs rated 2 A and 3 A
- Each converter supports output voltage up to 15 V
- 0.8 V precision feedback reference with +/-1% accuracy
- Constant-frequency peak current-mode control architecture
- Programmable 300 kHz to 1.4 MHz switching frequency
- 180-degree out-of-phase operation between converter clocks
- Pulse skipping mode for LOW_P active high light load
- 10 µA shutdown current with EN1 and EN2 low
- Available in PWP HTSSOP and RGE VQFN packages
Typical Applications
- Dual step-down power rails
- 4.5 to 18 V input systems
- 2 A and 3 A buck outputs
- Up to 15 V regulated outputs
- Low-load pulse skipping operation
- Thermally constrained power designs
- Externally programmed switching frequency designs
Procurement Notes
When requesting a quote for TPS65270, 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 TPS65270 support?
The TPS65270 supports a 4.5 to 18 V operating input range. The recommended input operating voltage is also specified as 4.5 to 18 V.
What output current is available from each buck converter?
Buck1 supports a maximum continuous output current of 2 A, while Buck2 supports a maximum continuous output current of 3 A.
How is the TPS65270 switching frequency configured?
The switching frequency is programmable from 300 kHz to 1.4 MHz using an external ROSC resistor. Example specified points include 1 MHz typical at 250 kOhm and 500 kHz typical at 500 kOhm.
Which package options are listed for the TPS65270?
The TPS65270 is listed in a 24-lead thermally enhanced HTSSOP PWP package measuring 7.80 mm x 4.40 mm and a 24-lead VQFN RGE package measuring 4.00 mm x 4.00 mm.
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.