Texas Instruments TPS62260DRVT

Overview

TPS62260DRVT from Texas Instruments is an adjustable-output, synchronous step-down DC/DC converter optimized for Li-ion battery-powered systems. It delivers up to 600 mA output current with 2.25-MHz fixed-frequency PWM operation, ±1.5% output voltage accuracy in PWM mode, and supports input voltages from 2 V to 6 V - enabling use with single-cell Li-ion, two/three-cell alkaline, or 3.3-V/5-V rails. It serves as a compact, high-efficiency point-of-load regulator in space-constrained portable electronics.

For engineers reviewing the TPS62260DRVT datasheet, TPS62260DRVT pinout, TPS62260DRVT application, or TPS62260DRVT equivalent, key selection considerations include its 6-pin WSON (2 mm × 2 mm) package, MODE pin-controlled PFM/PWM transition, dynamic voltage positioning for load transients, 15-μA quiescent current in power-save mode, and 100% duty-cycle low-dropout capability down to VIN ≈ VOUT.

Technical Context

The TPS62260DRVT employs voltage-mode control with input voltage feed-forward for fast line/load regulation and stable operation with small ceramic capacitors. Its integrated dual-MOSFET power stage features typ. 240 mΩ high-side and 185 mΩ low-side RDS(on), supporting efficient conversion across 2–6 V input and 0.6–VIN adjustable output.

It implements automatic PFM-to-PWM mode transition based on load current, with dynamic voltage positioning (+1% VOUT in PFM) to minimize undershoot/overshoot during load steps. The MODE pin enables forced PWM operation for noise-sensitive applications, while EN provides precise sequencing control and shutdown current <1 μA.

Key Specifications

Pinout & Package

TPS62260DRVT is housed in a thermally enhanced 6-pin WSON package (2.00 mm × 2.00 mm × 0.80 mm) with exposed thermal pad (Pin 6 = Power PAD/GND). This package supports high power density and efficient heat dissipation in compact layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar step-down converter applications.

Compared with TPS62261DDCT, the TPS62260DRVT offers design flexibility via adjustable output and MODE control at the cost of two external resistors; compared with TPS62840DRLR, it trades nanoscale quiescent current for broader legacy support, lower unit cost, and proven field reliability in consumer portable designs.

Availability

TPS62260DRVT is available at Aetrix Electronics and suitable for mobile phones, portable media players, and point-of-load (POL) applications requiring stable component supply, long-lifecycle availability, and consistent parametric performance across production batches.

Supply support for TPS62260DRVT 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.

The TPS6226x product line was designed specifically for space-constrained, battery-powered portable electronics - delivering high efficiency across wide load ranges while minimizing solution size through 2.25-MHz operation and WSON packaging.

FAQ

What is the minimum input voltage required for TPS62260DRVT to maintain regulation at 600 mA output?

The minimum input voltage depends on output voltage, load current, and component losses. For a 1.2-V output at 600 mA, VINmin ≈ VOUT + IOUT × (RDS(on)HSmax + DCRinductor) ≈ 1.2 V + 0.6 A × (0.48 Ω + 0.11 Ω) ≈ 1.55 V. However, the device's undervoltage lockout activates at ~1.85 V falling, so practical minimum VIN is ~1.95 V. The TPS62260DRVT enters 100% duty cycle below this threshold to extend battery runtime.

Can TPS62260DRVT be used with a 1.5-V input from two alkaline cells?

No - the TPS62260DRVT has an absolute minimum input rating of 2 V and an undervoltage lockout threshold of 1.85 V (falling). Two fresh alkaline cells start at ~3.2 V but drop below 2 V under load and aging. For true 1.5-V operation, consider TI's TPS6274x family or discrete boost solutions. The TPS62260DRVT is validated for two alkaline cells only when initial voltage exceeds 2 V and load is light enough to avoid premature UVLO triggering.

How does the MODE pin affect efficiency and noise in TPS62260DRVT?

When MODE = GND, the TPS62260DRVT operates in power-save mode (PFM at light loads), achieving >85% efficiency down to 10 μA load with 15-μA quiescent current - ideal for battery longevity. When MODE = VIN, it forces fixed 2.25-MHz PWM, raising light-load IQ to ~3.8 mA but delivering predictable, filterable switching noise - essential for RF, audio, or precision analog circuits adjacent to the TPS62260DRVT.

What is the recommended output capacitor for optimal transient response with TPS62260DRVT?

Texas Instruments specifies a 10-μF X5R/X7R ceramic capacitor (e.g., GRM188R60J106M) placed close to the TPS62260DRVT's VOUT and GND pins. This value balances ESR-induced ripple, loop stability, and physical size. Adding a 22-pF feedforward capacitor between FB and GND further improves load-step response by enhancing error amplifier bandwidth - a critical design step confirmed in the TPS62260DRVT's typical application schematic.

Does TPS62260DRVT support forced 100% duty cycle, and how is it triggered?

Yes - the TPS62260DRVT automatically enters 100% duty cycle when VIN approaches VOUT, maintaining regulation down to VIN ≈ VOUT + (IOUT × RDS(on)HS). This occurs without external control: as input voltage drops during battery discharge, the controller holds the high-side MOSFET continuously on for one or more cycles. This feature is intrinsic to the TPS62260DRVT's architecture and requires no configuration - maximizing usable battery energy in portable applications.