Texas Instruments TLV62090RGTT

Overview

TLV62090RGTT from Texas Instruments is a 3A synchronous step-down DC-DC converter with DCS-Control™ topology, operating from 2.5 V to 5.5 V input and delivering adjustable output from 0.8 V to VIN. It achieves up to 98% efficiency at 1.4 MHz switching frequency with 20 µA quiescent current in power save mode, and integrates output discharge, hiccup short-circuit protection, and softstart control - widely used in SSDs, notebook CPU cores, and battery-powered point-of-load regulation.

For engineers reviewing the TLV62090RGTT datasheet, TLV62090RGTT pinout, TLV62090RGTT application, or TLV62090RGTT equivalent, key selection criteria include its 16-pin VQFN (3 mm × 3 mm) package, DCS-Control™ transient response, 0.8 V feedback reference, integrated charge pump (CP/CN), and PG open-drain power-good signaling for sequencing-critical systems.

Technical Context

The TLV62090RGTT implements DCS-Control™ - a hybrid regulation architecture combining hysteretic speed with voltage-mode stability - enabling seamless PWM-to-power-save mode transition without output disturbance. Its internal 0.8 V reference, 7.5 µA softstart current source, and dual-level hiccup current limit (1.5 A startup / 4.6 A nominal) ensure robust start-up into large capacitive loads and fast load transient recovery.

It uses an integrated charge pump (CP/CN pins) to drive the high-side MOSFET gate above PVIN, supporting 100% duty cycle operation for ultra-low dropout. The device features separate analog (AGND) and power (PGND) grounds, dedicated AVIN bias supply, and VOS-sensed output discharge via 200 Ω internal resistor - all optimized for noise-sensitive, space-constrained portable applications.

Key Specifications

Pinout & Package

The TLV62090RGTT is housed in a thermally enhanced 3 mm × 3 mm, 16-pin VQFN package (RGT) with exposed thermal pad connected to AGND. This package supports high-density PCB layouts and efficient heat dissipation through bottom-side soldering of the thermal pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS62090RGTT and TLV62095RGTT, the TLV62090RGTT offers the optimal balance of 3 A capability, 98% efficiency, and 20 µA quiescent current - making it the preferred choice for mid-power battery-operated systems requiring both performance and runtime.

Availability

TLV62090RGTT is available at Aetrix Electronics and suitable for SSD power delivery, notebook processor supplies, and industrial distributed power applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for TLV62090RGTT 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 high-efficiency DC-DC conversion and automotive-grade reliability.

The TLV62090RGTT belongs to TI's DCS-Control™ synchronous buck converter product line, engineered specifically for space-constrained, battery-powered systems demanding high light-load efficiency, fast transient response, and seamless power-mode transitions.

FAQ

What is the recommended input capacitor for TLV62090RGTT in a 3.3 V output design?

The TLV62090RGTT datasheet specifies ≥10 µF total input capacitance with low ESR, typically implemented using one 22 µF X5R ceramic capacitor placed as close as possible to PVIN and PGND pins. For 3.3 V output from 5 V input, a 22 µF/6.3 V X5R in 0805 or 1206 case is standard; parallel 1 µF high-frequency ceramic further suppresses switching noise. Layout must minimize loop area between PVIN, PGND, and input cap.

Does TLV62090RGTT support forced PWM mode, or is power save mode automatic?

The TLV62090RGTT does not support forced PWM mode - its DCS-Control™ architecture automatically transitions between PWM (fixed ~1.4 MHz) at medium/heavy loads and power save mode (variable frequency, ~20 µA IQ) at light loads. This seamless transition is intrinsic to the control loop and requires no external pin configuration or mode selection; attempting to force PWM would compromise efficiency and violate the device's designed operating envelope.

How is the softstart time calculated for TLV62090RGTT, and what capacitor value gives a 5 ms ramp?

TLV62090RGTT softstart time is calculated as t_SS ≈ C_SS × 1.25 V / 7.5 µA. To achieve a 5 ms ramp, solve C_SS = (5 ms × 7.5 µA) / 1.25 V = 30 nF. A standard 33 nF X7R ceramic capacitor yields ~5.5 ms. Larger values extend ramp time linearly; values below 1 nF risk startup hiccup due to insufficient softstart duration under heavy capacitive loads.

Can TLV62090RGTT be used with an output capacitor larger than 22 µF, and what is the maximum supported value?

Yes, TLV62090RGTT supports output capacitors from 10 µF up to 150 µF and beyond, as confirmed in the datasheet's "Description" section. For V_OUT ≥ 1.2 V, a single 22 µF capacitor meets +3% accuracy in PFM mode; for V_OUT < 1.2 V, two 22 µF capacitors in parallel are recommended. Larger values improve ripple suppression and transient response but require proportionally larger softstart capacitance to avoid hiccup during startup.

What is the function of the VOS pin on TLV62090RGTT, and how should it be connected?

The VOS pin on TLV62090RGTT is the output voltage sense terminal that enables active discharge of the output rail during shutdown. It must be connected directly to the regulated output node (not through a resistor divider). When EN is low or UVLO/thermal shutdown occurs, an internal 200 Ω resistor between VOS and PGND discharges the output capacitor - ensuring predictable power-down behavior and preventing backfeed into powered-down circuitry.