Texas Instruments TPS61260DRVR

Overview

TPS61260DRVR from Texas Instruments is a synchronous boost DC-DC converter IC designed for ultra-low-input-voltage battery-powered systems. It operates from 0.8 V to 4.0 V input, delivers up to 100 mA output current at 3.3 V, supports adjustable output voltage (1.8–4.0 V), features 29-µA quiescent current, and uses a 2.00 × 2.00 mm WSON-6 package - enabling coin-cell and single alkaline/NiMH applications requiring high efficiency down to 0.8 V.

For engineers reviewing the TPS61260DRVR datasheet, TPS61260DRVR pinout, TPS61260DRVR application, or TPS61260DRVR equivalent, key selection criteria include its programmable average output current (10–100 mA), quasi-fixed 2.5 MHz switching frequency, Power Save Mode for light-load efficiency, load disconnect during shutdown, and integrated overvoltage protection - all critical for space-constrained, low-power portable medical and sensing designs.

Technical Context

The TPS61260DRVR implements a current-mode, quasi-fixed-frequency PWM controller with synchronous rectification using three internal N-channel MOSFETs. Its dual-loop architecture regulates either output voltage or average output current - whichever demands lower power - via independent feedback paths: FB pin (500 mV reference) for voltage control and RI pin (400 mV reference) for current programming.

It integrates advanced softstart, undervoltage lockout (UVLO threshold 0.7 V with 200 mV hysteresis), output overvoltage protection (4.5 V trip), and automatic transition between linear startup mode (VIN > VOUT) and synchronous boost mode (VIN < VOUT). Load disconnect during shutdown is enforced by internal switch isolation, eliminating reverse current flow.

Key Specifications

Pinout & Package

TPS61260DRVR is housed in a thermally enhanced 2.00 × 2.00 mm, 6-pin WSON (DRV) package with an exposed thermal pad that must be soldered to PCB ground for reliable power dissipation and mechanical stability.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar boost converter applications.

Compared with TPS61261DRVR, the TPS61260DRVR provides design flexibility through adjustable output voltage but requires two external resistors; compared with MAX77650EWL+, it delivers 14× lower quiescent current and 30% smaller footprint for dedicated boost-only applications.

Availability

TPS61260DRVR is available at Aetrix Electronics and suitable for personal medical devices, wireless headsets, industrial metering equipment, LED drivers, and laser pointer designs requiring stable component supply with long-term manufacturability and consistent parametric performance.

Supply support for TPS61260DRVR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies with over 50 years of innovation in energy-efficient IC design.

The TPS6126x product line was engineered specifically for ultra-low-input-voltage, high-efficiency boost conversion in battery-powered portable electronics - prioritizing minimal quiescent current, programmable current limiting, and robust operation down to 0.8 V input.

FAQ

What is the minimum input voltage required for TPS61260DRVR to start up?

The TPS61260DRVR has a startup undervoltage lockout (UVLO) threshold of 1.2 V (typical) when junction temperature is between –40°C and 105°C. Below this, the device remains disabled. However, once operating, it sustains regulation down to 0.8 V input - making TPS61260DRVR uniquely suited for deeply discharged alkaline or NiMH cells where other boost converters fail.

How do I configure the output voltage for TPS61260DRVR?

TPS61260DRVR uses an external resistor divider between VOUT, FB, and GND to set output voltage. With a 500 mV internal reference at FB, select R1 and R2 such that VOUT = 500 mV × (1 + R1/R2). For example, 1.8 V output requires R1/R2 = 2.6; typical values are R2 = 100 kΩ and R1 = 260 kΩ. Ensure divider current ≥1 µA and total resistance ≤1 MΩ for optimal accuracy.

Can TPS61260DRVR drive a pre-biased output during startup?

Yes, TPS61260DRVR supports monotonic start-up into a pre-biased output. Its advanced softstart circuitry ramps output current gradually as VOUT rises, avoiding output voltage overshoot or reverse current flow - a critical capability for systems with backup capacitors or shared rails where uncontrolled inrush could disrupt adjacent circuitry.

What is the purpose of the RI pin on TPS61260DRVR?

The RI pin on TPS61260DRVR programs the average output current limit from 10 mA to 100 mA using a resistor to GND. The internal circuit maintains ~400 mV at RI during regulation, so IOUT ≈ 400 mV / R_RI. This directly scales the maximum switch current, allowing smaller inductors and safer operation under short-circuit or high-capacitance load conditions - a key differentiator of TPS61260DRVR versus basic boost controllers.

Does TPS61260DRVR provide load disconnect during shutdown?

Yes, TPS61260DRVR fully disconnects the load from the input supply when disabled via the EN pin. Internal switches isolate VOUT from VIN, preventing reverse current flow and eliminating battery drain during standby - unlike basic boost ICs that allow leakage through body diodes. This feature is essential for TPS61260DRVR applications in always-on sensors and medical devices requiring zero-quiescent maintenance.