Texas Instruments TLV62084DSGT

Overview

TLV62084DSGT from Texas Instruments is a 2-A synchronous step-down DC/DC converter in a 2-mm × 2-mm WSON-8 package with thermal pad, supporting 2.7 V to 6 V input and delivering regulated output from 0.5 V to 4 V. It employs DCS-Control™ architecture for fast transient response, features power good (PG) output, 100% duty-cycle operation for low dropout, and integrated high- and low-side MOSFETs with 120 mΩ/90 mΩ R_DS(on). It is used in battery-powered portable devices and point-of-load regulation where compact size and light-load efficiency are critical.

For engineers reviewing the TLV62084DSGT datasheet, TLV62084DSGT pinout, TLV62084DSGT application, or TLV62084DSGT equivalent, key selection considerations include its 2-A continuous output current capability, 2-MHz nominal switching frequency, power save mode for sub-100 µA quiescent current at light loads, PG open-drain logic behavior (high-impedance when enabled and in regulation), and thermal shutdown at 150°C with 20°C hysteresis.

Technical Context

The TLV62084DSGT operates in PWM mode at medium-to-heavy loads (≥100 mA) with fixed 2-MHz switching frequency and transitions seamlessly into power save mode (PFM) at light loads using DCS-Control™'s single-loop architecture-eliminating output voltage disturbance during mode transition. Its internal compensation supports wide output capacitor ranges (e.g., 10–22 µF ceramic), and the 100% duty-cycle feature enables ultra-low dropout operation down to V_OUT + I_OUT×(R_DS(on) + R_L).

It integrates active output discharge (R_DIS ≈ 1 kΩ), soft-start (~40 µs delay, ~10 mV/µs ramp), undervoltage lockout (V_UVLO = 2 V, 120 mV hysteresis), and thermal shutdown (T_JSD = 150°C). The PG pin asserts low when V_FB falls below 90% of nominal (–10% threshold) and remains high-impedance above 95%, enabling rail sequencing without external logic.

Key Specifications

Pinout & Package

TLV62084DSGT is housed in an 8-terminal WSON package (DSG) measuring 2.00 mm × 2.00 mm with exposed thermal pad soldered to GND for optimal thermal performance (θ_JA = 59.7°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV62084ADSGT, the TLV62084DSGT provides standard high-impedance PG during faults-simplifying interface with existing sequencers-while TPS62084DSGR delivers higher current and lower quiescent current but requires revalidation of enable timing and feedback stability margins.

Availability

TLV62084DSGT is available at Aetrix Electronics and suitable for battery-powered portable devices, point-of-load regulators, and SSD/memory supply applications requiring stable component supply, long-term manufacturability, and consistent electrical performance across production lots.

Supply support for TLV62084DSGT 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 TLV6208x product line was designed specifically for space-constrained, battery-operated systems demanding high efficiency across wide load ranges-from nanoamp sleep currents to multi-amp active operation-without sacrificing transient performance or thermal robustness.

FAQ

What is the maximum continuous output current of the TLV62084DSGT?

The TLV62084DSGT delivers up to 2 A continuous output current under recommended operating conditions (T_J ≤ 125°C, proper PCB thermal design). This rating assumes adequate copper area for the thermal pad and ambient temperature ≤ 85°C. Peak current capability exceeds 2.3 A per the ILIM specification, but sustained operation above 2 A requires derating based on thermal performance and layout.

Does the TLV62084DSGT support output voltages below 1 V?

Yes, the TLV62084DSGT supports output voltages from 0.5 V to 4 V, set via an external resistor divider on the FB pin. With a fixed 0.45 V feedback reference, a 0.5 V output requires R1/R2 ≈ 0.11, and lower outputs (e.g., 0.6 V) are achievable with appropriate resistor tolerance and layout-TI's WEBENCH® design tool validates stability down to 0.5 V.

How does the power good (PG) pin behave on the TLV62084DSGT during startup and fault conditions?

On the TLV62084DSGT, the PG pin remains high-impedance until V_FB reaches ≥95% of the target output; it then stays high-Z as long as V_FB ≥90%. If V_FB drops below 90%, PG pulls low. During shutdown (EN=LOW), UVLO, or thermal shutdown, PG returns to high-impedance-unlike the TLV62084A variant, which drives PG low in those states.

Can the TLV62084DSGT start up into a pre-biased output capacitor?

Yes, the TLV62084DSGT supports pre-biased start-up: when enabled, it detects the existing V_OUT voltage and ramps toward the programmed value without forcing reverse current into the output capacitor. This prevents damage to downstream components and avoids voltage overshoot, making it suitable for hot-swap and multi-rail sequencing applications.

What is the purpose of the VOS pin on the TLV62084DSGT, and how should it be connected?

The VOS (voltage output sense) pin on the TLV62084DSGT provides direct feedback from the output node to improve regulation accuracy under high-current or high-ESR conditions. It must be connected directly to the output capacitor's positive terminal-never to the FB divider-to enable remote sensing and compensate for PCB trace resistance between the IC and load.