Texas Instruments TPS61107RGER

Overview

TPS61107RGER from Texas Instruments is a dual-output, single-cell synchronous boost converter with integrated 120 mA LDO. It delivers fixed 3.3 V boost output and fixed 1.8 V LDO output, operates from 0.8 V to 3.3 V input, achieves up to 95% efficiency, and includes auto-discharge, power-good signaling, and low-battery detection for portable battery-powered systems.

For engineers reviewing the TPS61107RGER datasheet, TPS61107RGER pinout, TPS61107RGER application, or TPS61107RGER equivalent, key selection considerations include its dual-rail capability (3.3 V + 1.8 V), QFN-24 package footprint, 1500 mA peak switch current limit, 65 µA quiescent current, and integrated low-battery comparator with dual open-drain outputs (LBO1/LBO2).

Technical Context

The TPS61107RGER implements a fixed-frequency PWM synchronous rectifier architecture with N-channel and P-channel MOSFETs, delivering up to 95% efficiency and eliminating external Schottky diodes. Its control loop uses multiple feedforward paths-monitoring input voltage, output voltage, and NMOS switch voltage drop-to directly adjust duty cycle without relying solely on error amplifier feedback.

It integrates two independent regulation stages: a boost converter with 320–800 kHz oscillator frequency and 1500 mA peak current limit, and a separate LDO stage with ±3% output accuracy, 300 mV dropout at 120 mA, and programmable enable via LDOEN. Both stages support shutdown isolation, auto-discharge (400 Ω internal switch), and coordinated power sequencing via PGOOD and ENPB.

Key Specifications

Pinout & Package

TPS61107RGER is housed in a thermally enhanced 24-pin QFN package (RGE) with exposed thermal pad (5 mm × 4 mm, 0.5 mm pitch). The package supports high-power density layouts and requires PCB thermal vias for reliable operation above 500 mW dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS61107RGER, TPS61087RGER offers higher boost current but requires external LDO implementation, while MAX8647ETE+ provides identical dual-rail voltages in smaller package but omits battery supervision and auto-discharge-making TPS61107RGER optimal for safety-aware, single-battery portable designs demanding full power management integration.

Availability

TPS61107RGER is available at Aetrix Electronics and suitable for handheld medical sensors, digital still cameras, industrial handheld terminals, and portable audio players requiring stable component supply with guaranteed long-term availability and traceable sourcing.

Supply support for TPS61107RGER 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 ICs, with decades of expertise in battery-powered system solutions.

The TPS6110x product line was designed specifically for ultra-low-voltage, dual-rail portable electronics powered by single- or dual-cell primary/secondary batteries, emphasizing efficiency, integration, and intelligent power sequencing.

FAQ

What is the fixed output voltage configuration of the TPS61107RGER?

The TPS61107RGER provides a fixed 3.3 V output from its boost converter stage and a fixed 1.8 V output from its integrated LDO stage. These voltages are factory-programmed and do not require external feedback resistors, simplifying design and improving output accuracy to ±3% over temperature and line/load conditions.

Does the TPS61107RGER support true load disconnect during shutdown?

Yes, the TPS61107RGER implements a patented back-gate isolation circuit that physically disconnects the battery from both VOUT and LDOOUT during shutdown (EN = low). Unlike conventional synchronous boost converters, this prevents reverse current flow through the PMOS body diode, ensuring zero battery drain and full system isolation.

How does the auto-discharge function work in the TPS61107RGER?

When ADEN is high, the TPS61107RGER activates an internal 400 Ω discharge switch across VOUT upon entering shutdown. This safely bleeds stored charge from the output capacitor, preventing residual voltage from keeping downstream circuitry (e.g., MCUs or sensors) partially active-a critical requirement for deterministic power-down in portable devices.

Can the TPS61107RGER operate from a single 1.2 V NiMH cell throughout its full discharge curve?

Yes, the TPS61107RGER starts up at 0.85 V (typical) and remains operational down to 0.8 V input, covering the entire usable discharge range of a single NiMH cell (1.2 V nominal → 0.9 V cutoff). Its synchronous architecture sustains >85% efficiency even at 1.0 V input and 100 mA load, enabling robust runtime extension.

What are the thermal limitations and PCB layout requirements for the TPS61107RGER?

The TPS61107RGER has a maximum junction temperature of 150°C and incorporates thermal shutdown at 140°C with 20°C hysteresis. Its QFN-24 (RGE) package requires a minimum of six 0.3-mm thermal vias under the exposed pad, connected to a solid inner-layer ground plane, to maintain TJ < 125°C at full load in still air.