Texas Instruments TLV62080DSGT

Overview

TLV62080DSGT from Texas Instruments is a synchronous step-down DC-DC converter optimized for battery-powered portable devices and point-of-load regulation. It operates from 2.5 V to 6 V input, delivers up to 1.2 A output current, features DCS-Control™ architecture for fast transient response, and integrates power save mode for high light-load efficiency. Its 2-mm × 2-mm WSON-8 package with thermal pad supports compact, thermally robust designs in space-constrained applications.

For engineers reviewing the TLV62080DSGT datasheet, TLV62080DSGT pinout, TLV62080DSGT application, or TLV62080DSGT equivalent, key selection considerations include its 1.2-A rated output, 2-MHz nominal switching frequency, 0.45-V feedback reference voltage, 100% duty-cycle low-dropout capability, and open-drain power-good (PG) output with high-impedance state during shutdown.

Technical Context

The TLV62080DSGT implements DCS-Control™ topology-combining hysteretic and voltage-mode control-to achieve seamless PWM-to-power-save-mode transition without output voltage disturbance. It uses internal compensation compatible with wide output capacitor values (e.g., 10–22 µF ceramic), enabling stable regulation across varying load and line conditions.

Its functional block includes dual N-MOSFET power stage (120-mΩ high-side, 90-mΩ low-side R_DS(on)), integrated soft-start (~40 µs delay, ~10 mV/µs ramp), undervoltage lockout (1.8–2.0 V threshold with 120-mV hysteresis), and thermal shutdown at 150°C with 20°C hysteresis.

Key Specifications

Pinout & Package

TLV62080DSGT is housed in an 8-terminal WSON package (DSG) measuring 2.00 mm × 2.00 mm with exposed thermal pad. The pad must be soldered to a GND plane for thermal and mechanical reliability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV62080DSGT, TPS62080DSGT offers higher current headroom and refined features without layout changes, while TLV62084DSGT trades input voltage range for increased output capability-both require verification of feedback network and thermal margin for the target application.

Availability

TLV62080DSGT is available at Aetrix Electronics and suitable for battery-powered portable devices, point-of-load regulators, and PC/notebook subsystems requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for TLV62080DSGT 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 specializing in analog, embedded processing, and power management ICs, with decades of leadership in high-efficiency DC-DC conversion technology.

The TLV62080DSGT belongs to TI's TLV6208x family of high-efficiency synchronous buck converters designed specifically for space-constrained, battery-sensitive applications where light-load efficiency, fast transient response, and small solution size are critical.

FAQ

What is the minimum input voltage required for TLV62080DSGT to regulate a 1.2-V output at 1.2-A load?

The minimum input voltage depends on output voltage, load current, and MOSFET on-resistance. For TLV62080DSGT, with R_DS(on) = 120 mΩ (high-side), the calculation yields V_IN,MIN ≈ 1.2 V + (1.2 A × 0.12 Ω) = 1.344 V - but the device requires ≥2.5 V to operate per absolute minimum specification. Thus, regulation begins at 2.5 V, and 100% duty cycle extends usability down to ~1.35 V under heavy load, though below 2.5 V the IC remains disabled.

Does TLV62080DSGT support pre-biased output startup?

Yes, TLV62080DSGT supports start-up into a pre-biased output. When enabled, it senses the existing VOUT level and ramps the output voltage to the programmed value without forcing reverse current into the output capacitor, preventing potential damage or system instability in multi-rail sequenced designs.

What is the purpose of the VOS pin on TLV62080DSGT, and how should it be connected?

The VOS (voltage output sense) pin on TLV62080DSGT provides direct feedback from the output node to improve load regulation accuracy. It must be connected directly to the VOUT net - preferably at the load side of the output capacitor - to compensate for PCB trace resistance and ensure stable regulation under dynamic load conditions.

How does the power-good (PG) output behave during thermal shutdown or UVLO events in TLV62080DSGT?

In TLV62080DSGT, the PG pin enters high-impedance state during thermal shutdown, UVLO, or EN = LOW. It only pulls low when VOUT falls below ~90% of nominal during normal operation. This behavior allows clean power sequencing - downstream devices can monitor PG to detect output faults without false triggers during intentional disable or protection events.

Can TLV62080DSGT operate without an external feedback resistor divider?

No, TLV62080DSGT requires an external resistor divider connected between VOUT, FB, and GND to set the output voltage. The internal 0.45-V reference is compared against the FB voltage; omitting the divider results in unregulated output. Typical configurations use R1 = 301 kΩ and R2 = 60.4 kΩ for 1.2-V output, per TI design guidelines.