Texas Instruments TPS61025DRCR

Overview

TPS61025DRCR from Texas Instruments is a fixed-output 3.3-V synchronous boost converter IC for battery-powered systems, delivering up to 200 mA output current from 0.9-V to 6.5-V input, featuring 96% peak efficiency, 25 µA quiescent current, and integrated low-battery comparator with LBI/LBO pins - used in portable medical devices requiring regulated 3.3-V rail from single-cell alkaline or Li-ion batteries.

For engineers reviewing the TPS61025DRCR datasheet, TPS61025DRCR pinout, TPS61025DRCR application, or TPS61025DRCR equivalent, key selection criteria include its fixed 3.3-V output, 1500-mA switch current limit, VSON-10 (3 mm × 3 mm) package, down-regulation capability when V_IN ≥ V_OUT, and power-save mode enable/disable via PS pin.

Technical Context

The TPS61025DRCR implements a fixed-frequency (480–720 kHz) PWM controller with synchronous rectification using integrated N-channel and P-channel MOSFETs, enabling 96% efficiency and eliminating external Schottky diode losses. Its multiple feed-forward control monitors V_IN, V_OUT, and NMOS switch voltage drop to directly adjust duty cycle without relying solely on error amplifier loop dynamics.

It supports true down-regulation: when V_IN ≥ V_OUT (e.g., 3.6-V Li-ion feeding 3.3-V output), the PMOS rectifier operates in linear mode to regulate V_OUT, with thermal implications managed by overtemperature protection (140°C trip, 20°C hysteresis). The device also integrates anti-ringing circuitry on the SW node and load disconnect during shutdown via backgate control.

Key Specifications

Pinout & Package

VSON-10 (DRC) package: 3.00 mm × 3.00 mm body, PowerPAD™ exposed thermal pad (must be soldered to PGND for thermal and electrical performance).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS61025DRCR, TPS61024DRCR provides lower output voltage for 3.0-V systems but lacks 3.3-V compatibility, while TPS61027DRCR delivers 5-V output at the cost of reduced efficiency below 3.0-V input - making TPS61025DRCR optimal for standard 3.3-V embedded applications with wide-input flexibility.

Availability

TPS61025DRCR is available at Aetrix Electronics and suitable for portable medical sensors, single-cell Li-ion handhelds, alkaline-powered PDAs, and camera flash LED drivers requiring stable component supply with guaranteed long-term sourcing.

Supply support for TPS61025DRCR 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 decades of expertise in high-efficiency DC-DC conversion for battery-powered systems.

The TPS6102x product line was designed specifically for ultra-low-power, space-constrained portable electronics - delivering high-efficiency synchronous boost conversion with integrated supervision and protection in miniature VSON packages.

FAQ

What is the output voltage of the TPS61025DRCR?

The TPS61025DRCR provides a fixed 3.3-V output with ±3% regulation accuracy across load, line, and temperature. It does not require external feedback resistors - the voltage divider is internal, and the FB pin is unused and should be left floating per TI's datasheet guidance for this variant.

Does the TPS61025DRCR support input voltages higher than its 3.3-V output?

Yes, the TPS61025DRCR supports down-regulation: it maintains regulated 3.3-V output even when input exceeds 3.3 V (e.g., 4.2-V Li-ion). In this mode, the internal PMOS operates linearly, increasing conduction loss - thermal design must account for power dissipation above ~3.5-V input.

How is low-battery detection implemented on the TPS61025DRCR?

The TPS61025DRCR uses the LBI pin (threshold = 500 mV ±10 mV hysteresis) and open-drain LBO output. A resistor divider from VBAT to GND sets the battery cutoff voltage (e.g., 2.4 V → R1/R2 = 1.2 MΩ/680 kΩ); LBO pulls low when threshold is crossed, signaling host MCU via interrupt-capable GPIO.

What package type and thermal requirements apply to the TPS61025DRCR?

The TPS61025DRCR uses the VSON-10 (DRC) package: 3.00 mm × 3.00 mm body with exposed PowerPAD™. This pad must be soldered to a thermal pad connected to PGND for effective heat dissipation - junction-to-board thermal resistance is 21.6°C/W, and proper PCB copper area is essential for 125°C max operating temperature.

Can the TPS61025DRCR be forced into fixed-frequency operation?

Yes - driving the PS pin high (to VBAT) disables power-save mode and forces continuous fixed-frequency PWM operation across all load conditions. This is useful for EMI-sensitive applications where frequency spreading must be avoided, though light-load efficiency drops compared to PS = GND operation.