TPS62867 Texas Instruments Integrated Circuit (Other) In Stock
The TPS62867 is a Texas Instruments synchronous step-down (buck) converter accepting 2.4 V to 5.5 V input and delivering up to 4 A or 6 A output current depending on the variant. It offers high efficiency at light loads via a low-power mode and integrates both power switches in a compact package. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 9
- Lifecycle
- ACTIVE
- Datasheet
- TPS62867 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 2.4 V to 5.5 V wide input range supports single-cell Li-ion to USB 5 V applications in a single design
- Up to 6 A output current in a compact integrated switch package enables dense multi-rail power solutions
- Automatic power-save mode (PSM) maintains high efficiency at light loads typical in IoT and wearable standby states
- Synchronous rectification with integrated high-side and low-side MOSFETs eliminates external Schottky diode and reduces BOM cost
Applications
The TPS62867 is designed for point-of-load power conversion in portable electronics, wearables, and IoT devices where the input is a single-cell Li-ion battery (2.4 V to 4.35 V) or a 5 V USB power supply. Its 4 A to 6 A output capability supports processor core rails, memory supplies, and multi-channel sensor arrays requiring tightly regulated low-voltage rails from a single buck stage. The integrated switches and automatic light-load efficiency make it suitable for always-on applications that alternate between active 6 A bursts and microamp standby currents.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
Can the TPS62867 power a processor core rail from a single-cell Li-ion battery throughout its full discharge range?
Yes. The TPS62867 accepts input voltages from 2.4 V to 5.5 V, which covers the full discharge range of a single-cell Li-ion battery from 4.2 V fully charged down to 2.5 V at near-depletion. A processor core rail of 1.0 V or 1.8 V remains regulated across the entire battery voltage range, ensuring the CPU or application processor does not brown-out during a discharge cycle even at full-load current of 4 A.
How does the TPS62867 maintain efficiency at light load in a wearable device standby state?
The TPS62867 automatically enters power-save mode (PSM) when the output current drops below a threshold of approximately 100 mA to 200 mA, switching to pulse-frequency modulation with very short on-times to maintain the output voltage. In PSM the quiescent current drops to tens of microamps, compared to several milliamps in continuous conduction mode. For a wearable in standby drawing 5 mA from the 1.8 V rail, PSM can improve converter efficiency from under 60% to above 85%, extending battery life by hours.
What output voltage range can the TPS62867 regulate to from a 5 V USB input?
From a 5 V USB input, the TPS62867 can regulate its output to voltages as low as approximately 0.6 V to 0.8 V (depending on feedback resistor configuration) up to just below the input voltage. Common output rails of 1.0 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, and 3.3 V are all achievable within the 4 A to 6 A current rating, making the TPS62867 suitable as a multi-purpose point-of-load regulator for FPGAs, application processors, and DDR memory supplies powered from USB 5 V.
How does the TPS62867 compare to a discrete buck converter design using an external controller and MOSFETs?
The TPS62867 integrates the high-side and low-side power MOSFETs, gate driver, oscillator, compensation, and protection circuits into a single IC, while a discrete design requires 5 to 8 additional components including two MOSFETs, a gate driver IC, bootstrap capacitor, and compensation network. The integrated solution reduces PCB area by approximately 40% to 60% and shortens design time from several days to hours. The trade-off is slightly reduced ability to customise switching frequency or dead-time, which is acceptable for the majority of 4 A to 6 A applications within the 2.4 V to 5.5 V input range.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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