Texas Instruments TPS62290DRVT

Overview

TPS62290DRVT from Texas Instruments is an adjustable-output, 1-A synchronous step-down DC/DC converter optimized for Li-ion battery-powered portable electronics. It operates from 2.3 V to 6.0 V input, delivers up to 1000 mA output current, features 2.25-MHz fixed-frequency PWM operation with automatic power-save mode (PFM) at light loads, and supports dynamic voltage positioning for improved transient response in mobile phone and wireless LAN power rails.

For engineers reviewing the TPS62290DRVT datasheet, TPS62290DRVT pinout, TPS62290DRVT application, or TPS62290DRVT equivalent, key selection criteria include its 2-mm × 2-mm WSON-6 (DRV) package, 15-μA quiescent current in PFM mode, ±1.5% output voltage accuracy in PWM mode, 100% duty-cycle low-dropout capability, and MODE-pin-selectable PWM/PFM operation for noise-sensitive or efficiency-critical designs.

Technical Context

The TPS62290DRVT employs a fast-response voltage-mode control architecture with input voltage feed-forward, enabling stable regulation using small ceramic capacitors. Its dual-mode operation-fixed-frequency PWM above ~100 mA and automatic transition to pulse-frequency modulation (PFM) below-is governed by the MODE pin state and load-dependent inductor current zero-crossing detection.

Internally, it integrates high-side (240–480 mΩ) and low-side (185–380 mΩ) MOSFETs, a 0.6-V reference, undervoltage lockout (1.85 V falling), thermal shutdown (140°C), and soft-start (250 μs ramp-up). The FB pin accepts external resistor dividers for adjustable output (0.6 V to VIN), while the SW pin drives a 2.2-μH inductor in standard configurations.

Key Specifications

Pinout & Package

TPS62290DRVT is housed in a thermally enhanced 2-mm × 2-mm × 0.8-mm WSON-6 package (Texas Instruments DRV variant) with exposed thermal pad soldered to PCB ground for optimal heat dissipation in space-constrained portable designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS62290DRVT, the fixed-output TPS62291DRVT and TPS62293DRVT reduce component count and layout complexity but sacrifice programmability - making them ideal for production designs with immutable voltage requirements, whereas TPS62290DRVT remains essential for prototyping, multi-voltage systems, or field-upgradable hardware.

Availability

TPS62290DRVT is available at Aetrix Electronics and suitable for mobile phone core rails, wireless LAN module supplies, portable media player DSP cores, low-power industrial sensor nodes, and other battery-powered embedded systems requiring stable component supply across long product lifecycles.

Supply support for TPS62290DRVT 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 company headquartered in Dallas, Texas, specializing in analog, embedded processing, and power management technologies for industrial, automotive, and consumer markets.

The TPS6229x family was designed specifically for high-efficiency, space-constrained portable electronics - delivering 1-A output in a 2-mm × 2-mm WSON package with adaptive PFM/PWM operation to maximize battery runtime without compromising transient performance.

FAQ

What is the minimum input voltage required for TPS62290DRVT to regulate a 1.8 V output at 1 A?

The minimum input voltage depends on load current, output tolerance, and MOSFET on-resistance. For TPS62290DRVT delivering 1.8 V at 1 A, VIN(min) ≈ 1.8 V + (1 A × (480 mΩ + inductor DCR)). With typical 2.2-μH inductor DCR of ~110 mΩ, VIN(min) is approximately 2.4 V - enabling operation deep into Li-ion discharge curve. This value is confirmed in TI's SLVS764G datasheet Section 8.4.3.

Can TPS62290DRVT be used with an output voltage lower than 1.8 V?

Yes. TPS62290DRVT supports adjustable output from 0.6 V to VIN via external resistor divider on the FB pin. Its 0.6-V internal reference allows stable 1.2 V, 1.0 V, or even sub-1-V outputs - commonly used for modern low-power DSPs and microcontrollers. Designers must ensure resistor values maintain divider current ≥1 μA and ≤10 μA for noise immunity and accuracy, as specified in Section 9.2.2.1 of the datasheet.

How does the MODE pin affect efficiency and noise performance of TPS62290DRVT?

When MODE = GND, TPS62290DRVT enters power-save mode (PFM) at light loads, achieving ~15 μA quiescent current and peak 96% efficiency. When MODE = VIN, it forces fixed 2.25-MHz PWM regardless of load, improving EMI predictability but reducing light-load efficiency to ~75%. This trade-off is documented in Figure 1 and Section 8.3.3 of SLVS764G, making MODE pin critical for balancing battery life versus spectral compliance.

Is TPS62290DRVT pin-compatible with other devices in the TPS6229x family?

Yes. All TPS6229x variants - including TPS62290DRVT, TPS62291DRVT, and TPS62293DRVT - share identical 6-pin WSON (DRV) package, pinout, and footprint. Differences exist only in internal feedback configuration (adjustable vs. fixed 1.8 V or 3.3 V), allowing drop-in substitution where output voltage matches system requirements without PCB revision.

What thermal considerations apply to TPS62290DRVT in continuous 1-A operation?

In continuous 1-A operation at 3.6 V input/1.8 V output, TPS62290DRVT dissipates ~180 mW (calculated from efficiency curves). With RθJA = 67.8°C/W, junction temperature rise is ~12°C above ambient - well within –40°C to 85°C operating range. However, soldering the exposed thermal pad to a solid GND plane is mandatory to achieve this rating, as stated in Section 7.4 of SLVS764G.