Texas Instruments TPS62290DRVR

Overview

TPS62290DRVR 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 100% duty cycle for ultra-low dropout - enabling full battery voltage utilization in mobile phones and portable media players.

For engineers reviewing the TPS62290DRVR datasheet, TPS62290DRVR pinout, TPS62290DRVR application, or TPS62290DRVR equivalent, key selection considerations include its 2-mm × 2-mm WSON-6 (DRV) package, ±1.5% output voltage accuracy in PWM mode, 15-μA quiescent current in PFM, dynamic voltage positioning (+1% light-load bias), and MODE-pin-selectable fixed-frequency vs. power-save operation.

Technical Context

The TPS62290DRVR employs a fast-response voltage-mode control architecture with input voltage feed-forward, enabling stable regulation with small ceramic capacitors. Its dual-mode operation-PWM at moderate/heavy loads and auto-transitioning PFM at light loads-is governed by the MODE pin and internal current-sense comparators that monitor high-side and low-side MOSFET conduction.

It integrates undervoltage lockout (1.85 V falling threshold), thermal shutdown (140°C), short-circuit protection via dual current-limit comparators, and soft-start (250 μs ramp-up). The adjustable output is set via external resistor divider referenced to a precise 600-mV internal bandgap, with dynamic voltage positioning active only in PFM mode to minimize load-step undershoot.

Key Specifications

Pinout & Package

TPS62290DRVR uses a 2.0 mm × 2.0 mm × 0.8 mm 6-pin WSON package (Texas Instruments designation DRV) with exposed thermal pad soldered to PCB ground for enhanced thermal dissipation (R_θJB = 37.2°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS62290DRVR, the fixed-output TPS62291DRVR and TPS62293DRVR simplify design by removing feedback components and improving output tolerance consistency, but forfeit programmability - making TPS62290DRVR the optimal choice when multiple output voltages or fine-tuned regulation are required across product variants.

Availability

TPS62290DRVR is available at Aetrix Electronics and suitable for mobile phone core rails, wireless LAN baseband supplies, portable media player DSP cores, low-power industrial sensor nodes, and point-of-load (POL) applications requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.

Supply support for TPS62290DRVR 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 portable and industrial systems.

The TPS6229x family was designed specifically for space-constrained, battery-powered portable electronics requiring high efficiency across wide load ranges - emphasizing small solution size, low quiescent current, and robust transient performance in smartphones, tablets, and wearables.

FAQ

What is the minimum input voltage required for TPS62290DRVR to maintain regulation at 1.8 V / 1000 mA?

The minimum input voltage depends on load current, output voltage tolerance, and component losses. For TPS62290DRVR delivering 1.8 V at 1000 mA, VIN_min ≈ V_OUT + I_OUT × (R_DS(on)max + R_L). With R_DS(on)max = 480 mΩ and typical inductor DCR of 110 mΩ, VIN_min ≈ 1.8 V + 1 A × 0.59 Ω = 2.39 V - consistent with the 2.3 V rated minimum in the datasheet. This enables full utilization of Li-ion discharge curves.

How does the MODE pin affect efficiency and noise performance in TPS62290DRVR?

In TPS62290DRVR, pulling MODE low enables automatic PFM/PWM transition, achieving up to 96% peak efficiency and 15-μA quiescent current at light loads - ideal for battery runtime. Pulling MODE high forces fixed 2.25-MHz PWM, reducing output ripple and enabling deterministic EMI filtering but lowering light-load efficiency. The choice directly trades efficiency for spectral predictability.

Can TPS62290DRVR be used with output voltages below 1.8 V?

Yes - TPS62290DRVR supports adjustable output from 0.6 V to V_IN, set by the external resistor divider. With V_REF = 600 mV, a 1.2 V output requires R1/R2 = 1.0 (e.g., R1 = 180 kΩ, R2 = 180 kΩ). Layout best practices apply: keep FB trace short, away from SW and inductor, and use 22–33 pF feedforward capacitor (C1) for optimal transient response at sub-1.8 V settings.

What thermal management guidance applies to TPS62290DRVR in continuous 1-A operation?

Under 1-A load at 3.6 V input, TPS62290DRVR dissipates ~250 mW. With R_θJB = 37.2°C/W and 25°C ambient, junction temperature rises ~9.3°C above ambient - well within the –40°C to 125°C rating. Ensure the exposed thermal pad is fully soldered to a ≥100 mm² copper pour tied to GND; avoid thermal isolation vias under the pad to maximize heat transfer to the PCB.

Is TPS62290DRVR compatible with ceramic output capacitors smaller than 10 μF?

Yes - TPS62290DRVR's voltage-mode control supports output capacitors from 4.7 μF to 22 μF. Using 4.7 μF X5R/X7R ceramics is acceptable for space-constrained designs, though it increases output voltage ripple in PFM mode and may reduce load-transient margin. For 1.8 V/1 A operation, TI recommends ≥10 μF to maintain <1% ripple and ensure stability across temperature and aging.