Texas Instruments TPS610992YFFR

Overview

TPS610992YFFR from Texas Instruments is a synchronous boost converter optimized for ultra-low-power battery systems, delivering 2.5V fixed output voltage with 600nA quiescent current into VOUT and 400nA into VIN, operating from 0.7V–5.5V input, and supporting up to 300mA output current in boost mode. It enables long-life operation in coin-cell–powered wearables and optical sensors.

For engineers reviewing the TPS610992YFFR datasheet, TPS610992YFFR pinout, TPS610992YFFR application, or TPS610992YFFR equivalent, key selection criteria include its 2.5V fixed output accuracy (±2%), true load disconnection during shutdown (<0.5µA shutdown current), hysteretic control architecture for light-load efficiency, and WCSP-6 (1.23mm × 0.88mm) package suitability for space-constrained PCB layouts.

Technical Context

The TPS610992YFFR implements a hysteretic current-mode control topology that dynamically adjusts switching frequency and inductor peak current offset to maintain regulation while minimizing quiescent consumption. Its dual-mode operation-boost, down mode, and pass-through-enables seamless transition across input-to-output voltage relationships without external control logic.

Down mode regulation maintains 2.5V output even when VIN exceeds VOUT (up to VIN = VOUT + 0.5V), using gate-controlled PMOS rectification; beyond that threshold, it enters pass-through mode where VOUT ≈ VIN − (IL × DCR_L + IL × R_{DS(on)_HS}). Thermal shutdown (150°C trip, 25°C hysteresis) and cycle-by-cycle OCP (0.8–1.25A ILIM) are integrated for robustness.

Key Specifications

Pinout & Package

TPS610992YFFR is housed in a 6-ball, 1.23mm × 0.88mm DSBGA (WCSP) package with bottom-side solder balls. The die orientation and ball mapping follow TI's standard YFF mechanical drawing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS610994YFFR and TPS610993YFFR, the TPS610992YFFR provides the only production-qualified 2.5V fixed-output variant in the YFF package-making it the sole drop-in solution for designs requiring exact 2.5V bias without external feedback or post-regulation.

Availability

TPS610992YFFR is available at Aetrix Electronics and suitable for wearable fitness trackers, optical biosensors, memory LCD displays, and ultra-low-power wireless sensor nodes requiring stable component supply across multi-year production cycles.

Supply support for TPS610992YFFR 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 90 years of innovation in high-reliability, energy-efficient IC design.

The TPS61099x family was engineered specifically for battery-powered portable electronics demanding nanoscale quiescent current and seamless input-to-output voltage transitions-targeting coin-cell, alkaline, and single-cell Li-ion applications where every nanoamp impacts product lifetime.

FAQ

What is the output voltage tolerance of the TPS610992YFFR under varying load and temperature?

The TPS610992YFFR delivers a fixed 2.5V output with ±2% accuracy in PWM mode across –40°C to 125°C junction temperature and full load range (0–300mA). Typical output deviation remains within ±15mV (±0.6%) at 25°C and 10mA load, verified per Section 6.5 of the SLVSD88M datasheet. This stability is achieved via factory-trimmed internal reference and feedback network.

Does the TPS610992YFFR require external feedback resistors to set its output voltage?

No, the TPS610992YFFR does not require external feedback resistors. Its 2.5V output is factory-programmed into internal EEPROM and enabled by connecting the FB pin to GND-standard for all fixed-output TPS61099x variants. External resistor dividers are only used with the adjustable TPS61099 (non-suffix) version.

How does the TPS610992YFFR behave when input voltage exceeds 2.5V?

When VIN rises above 2.5V, the TPS610992YFFR first enters down mode (VIN > VOUT – 50mV), regulating VOUT at 2.5V by modulating the rectifying PMOS gate. At VIN > VOUT + 0.5V, it transitions to pass-through mode where VOUT ≈ VIN – (IL × DCR_L + IL × R_{DS(on)_HS}). This behavior is fully autonomous and requires no external control signals.

What is the maximum continuous output current supported by the TPS610992YFFR?

The TPS610992YFFR supports up to 300mA continuous output current when converting from 3.3V input to 2.5V output, achieving ≥93% efficiency at 200mA per Figure 6-7. Peak switch current limit is 0.8–1.25A (depending on temperature), but sustained current is thermally limited by the 134.4°C/W R_θJA of the YFF package-derating required above ~150mA in still-air environments.

Can the TPS610992YFFR start up from a 0.7V input source?

Yes, the TPS610992YFFR guarantees startup from 0.7V input with loads lighter than 3kΩ (i.e., <333µA), as confirmed in Section 7.3.4. Startup fails only under heavy pre-load conditions where output cannot reach 1.6V during soft-start; in such cases, increasing input voltage or reducing initial load restores reliable startup.