Texas Instruments TLV70728APDQNR

Overview

TLV70728APDQNR from Texas Instruments is a 200-mA, low-quiescent-current (25 µA), low-noise LDO regulator with fixed 2.8 V output, designed for power-sensitive portable electronics. It delivers ±0.5% DC accuracy, supports 0.1 µF minimum output capacitance, and achieves 70 dB PSRR at 100 Hz-enabling clean power delivery in RF sections of wearable devices and wireless handsets.

For engineers reviewing the TLV70728APDQNR datasheet, TLV70728APDQNR pinout, TLV70728APDQNR application, or TLV70728APDQNR equivalent, key selection criteria include dropout voltage at 150 mA (250 mV max), thermal shutdown/overcurrent protection, enable-pin logic thresholds (VIH = 0.9 V, VIL = 0.4 V), and X2SON-4 package compatibility with space-constrained PCB layouts.

Technical Context

The TLV70728APDQNR uses a PMOS pass transistor architecture enabling ultra-low dropout and reverse-voltage body-diode conduction. Its internal bandgap reference and error amplifier deliver tight load/line regulation across –40°C to +125°C junction temperature, with transient response optimized for fast load steps up to 150 mA.

Unlike standard TLV707 variants, the TLV70728APDQNR belongs to the "A" grade revision (per SBVS153G Rev G), featuring tightened dropout voltage specs (e.g., 250 mV max at 150 mA for 2.8 V output) and updated current-limit thresholds (240–450 mA). It lacks the active pulldown circuit found in TLV707P variants.

Key Specifications

Pinout & Package

TLV70728APDQNR is housed in a 1.0 mm × 1.0 mm DQN (X2SON-4) package with wettable flank terminals for automated optical inspection. Thermal pad on underside enhances heat dissipation in high-density layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Compared with TPL720F285PDBVR and MCP1700T-2802E/TT, TLV70728APDQNR uniquely balances ultra-low dropout (250 mV), integrated enable control, and minimal 0.1 µF stability-making it optimal for next-gen space- and battery-constrained portable RF systems.

Availability

TLV70728APDQNR is available at Aetrix Electronics and suitable for wearable electronics, wireless handsets, and portable WLAN cards requiring stable component supply with consistent parametric performance across production batches.

Supply support for TLV70728APDQNR 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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.

The TLV707 series was engineered specifically for portable, battery-powered devices demanding ultra-low quiescent current, high PSRR, and minimal board footprint-targeting smartphones, wearables, and wireless peripherals.

FAQ

What is the maximum output current capability of the TLV70728APDQNR?

The TLV70728APDQNR supports up to 200 mA continuous output current. Its internal current limit is specified between 240 mA and 450 mA depending on conditions, providing robust fault protection without external components. This makes TLV70728APDQNR suitable for powering moderate-complexity sensor hubs or RF transceivers in compact portable designs.

Does TLV70728APDQNR include an active pulldown circuit on the output?

No, TLV70728APDQNR does not include an active pulldown circuit. That feature is exclusive to the TLV707P variant (e.g., TLV70728P). TLV70728APDQNR relies on natural discharge through the load; if rapid output discharge is required, an external pulldown resistor must be added. This distinction is confirmed in the functional block diagrams and feature descriptions of the SBVS153G datasheet.

What is the minimum output capacitance required for stability with TLV70728APDQNR?

TLV70728APDQNR is stable with an effective output capacitance of just 0.1 µF, verified across temperature and bias conditions. This allows use of small-footprint ceramic capacitors (e.g., 0201 or 0402 X5R/X7R) and reduces total solution size. The 0.1 µF value refers to capacitance *under operating voltage and temperature*, not nominal rated value.

Can TLV70728APDQNR operate from a 2.0 V input supply?

Yes, TLV70728APDQNR operates with input voltages from 2.0 V to 5.5 V per its Recommended Operating Conditions. At 2.0 V input and 2.8 V output, regulation is not possible due to insufficient headroom; however, the device remains functional and protected. For reliable 2.8 V regulation, VIN must exceed VOUT by at least the dropout voltage (≥250 mV at 150 mA), so minimum practical VIN is ~3.05 V.

What package type and dimensions does TLV70728APDQNR use?

TLV70728APDQNR uses the DQN (X2SON-4) package: a 1.0 mm × 1.0 mm, 4-pin, leadless package with exposed thermal pad. It features wettable flanks for solder joint inspection and achieves R_θJA = 208.1°C/W. This package is optimized for high-density portable PCBs where space and thermal performance are critical constraints.