Texas Instruments TPS62293DRVRG4

Overview

TPS62293DRVRG4 from Texas Instruments is a 1-A synchronous step-down DC/DC converter optimized for Li-ion battery-powered portable electronics. It delivers a fixed 1.8 V output from 2.3–6.0 V input, operates at 2.25 MHz fixed switching frequency, supports power save mode (PFM) at light loads with 15-μA quiescent current, and features 100% duty cycle low-dropout operation-enabling full battery voltage utilization in mobile phones and smart devices.

For engineers reviewing the TPS62293DRVRG4 datasheet, TPS62293DRVRG4 pinout, TPS62293DRVRG4 application, or TPS62293DRVRG4 equivalent, key selection considerations include its fixed 1.8 V output, 2-mm × 2-mm WSON-6 (DRV) package, MODE-pin-controllable PWM/PFM transition, ±1.5% output accuracy in PWM mode, and integrated high- and low-side MOSFETs with 240 mΩ/185 mΩ typical R_DS(on).

Technical Context

The TPS62293DRVRG4 implements a fast-response voltage-mode control architecture with input voltage feed-forward, enabling stable regulation using small ceramic capacitors. Its internal 0.6-V reference feeds a precision feedback loop where the FB pin is internally connected to a fixed resistor divider for 1.8 V output-eliminating external resistors and simplifying layout.

It integrates dual N-channel MOSFETs (high-side switch + synchronous rectifier), supports dynamic voltage positioning (+1% offset in PFM mode to reduce load-step undershoot), and includes undervoltage lockout (1.85 V falling threshold), thermal shutdown (140°C), and short-circuit protection via cycle-by-cycle current limiting on both switches.

Key Specifications

Pinout & Package

TPS62293DRVRG4 is housed in a thermally enhanced 2-mm × 2-mm × 0.8-mm WSON-6 package (TI designation DRV), with an exposed thermal pad that must be soldered to PCB ground for optimal thermal performance (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 TPS62293DRVRG4, TPS62291DRVR offers identical form-factor and functionality at 3.3 V-ideal for peripheral rail substitution-while TPS62067QDSGRQ1 provides automotive-grade robustness and higher-frequency operation at the expense of non-pin-compatible enable logic and thermal layout requirements.

Availability

TPS62293DRVRG4 is available at Aetrix Electronics and suitable for mobile phone power management, wireless LAN baseband supply, portable media player audio codec biasing, low-power DSP core supply, and point-of-load (POL) applications requiring stable component supply across high-mix production runs.

Supply support for TPS62293DRVRG4 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 connectivity technologies, with decades of expertise in power management ICs for portable and industrial systems.

The TPS6229x family was designed specifically for high-efficiency, space-constrained battery-powered devices-including smartphones, tablets, and wearables-emphasizing ultra-small footprint, low quiescent current, and seamless light-to-heavy load transitions.

FAQ

What is the output voltage of the TPS62293DRVRG4 and is it adjustable?

The TPS62293DRVRG4 provides a fixed 1.8 V output voltage. It is not adjustable-the internal feedback divider is factory-trimmed and permanently connected, eliminating the need for external resistors. This simplifies design, improves accuracy (±1.5% in PWM mode), and enhances reliability in high-volume portable electronics where consistent core voltage is critical. The TPS62293DRVRG4 does not support external resistor programming like the adjustable TPS62290DRV variant.

Does the TPS62293DRVRG4 require an external inductor and output capacitor?

Yes, the TPS62293DRVRG4 requires an external inductor and output capacitor to function. The recommended design uses a 2.2 μH shielded inductor (e.g., Coilcraft LPS3015) and a 10 μF X5R/X7R ceramic capacitor. These components form the LC filter that smooths the switched output; omitting or undersizing them causes excessive ripple, instability, or failure to regulate. The TPS62293DRVRG4's control loop is optimized for this 2.2 μH / 10 μF combination, ensuring fast transient response and 96% peak efficiency.

How does the MODE pin affect the operation of the TPS62293DRVRG4?

The MODE pin on the TPS62293DRVRG4 selects between two operating modes: when pulled low (to GND), it enables automatic power save mode (PFM at light loads, PWM at heavy loads); when pulled high (to VIN), it forces continuous 2.25-MHz PWM operation regardless of load. This allows designers to prioritize efficiency (MODE = GND) or EMI predictability (MODE = VIN). The TPS62293DRVRG4 transitions seamlessly between modes without output disturbance, making it adaptable to dynamic system requirements.

What thermal management is required for the TPS62293DRVRG4 in a 1-A application?

The TPS62293DRVRG4 requires proper thermal management via its exposed thermal pad, which must be soldered to a minimum 100 mm² copper pour connected to PCB ground. At 1-A continuous load with 3.6 V_IN/1.8 V_OUT, junction temperature rise is ~42°C above ambient (using R_θJB = 37.2°C/W). Without adequate copper area or airflow, thermal shutdown (140°C) may trigger. The TPS62293DRVRG4's 2-mm × 2-mm DRV package relies entirely on bottom-side conduction-top-side heatsinking provides negligible benefit.

Is the TPS62293DRVRG4 compatible with lithium polymer batteries?

Yes, the TPS62293DRVRG4 is fully compatible with lithium polymer (Li-Po) batteries. Its 2.3–6.0 V input range covers the full discharge curve of single-cell Li-Po (typically 4.2 V fully charged down to ~2.7 V cutoff), and its 100% duty cycle operation extends usable range to ~2.0 V. The device's undervoltage lockout (1.85 V falling threshold) prevents deep discharge damage, while its 15-μA quiescent current minimizes parasitic drain during storage-making the TPS62293DRVRG4 suitable for Li-Po-powered wearables, Bluetooth earbuds, and portable medical devices.