Texas Instruments TLV751180280PDSQR

Overview

TLV751180280PDSQR from Texas Instruments is a dual-channel, 500-mA, high-accuracy low-dropout (LDO) regulator in a 2-mm × 2-mm WSON-10 package. It delivers fixed 1.8 V and 2.8 V outputs with ±1.5% accuracy over –40°C to +125°C, 130 mV max dropout at 500 mA (3.3 VOUT), 25 µA typical quiescent current, and active output discharge - enabling reliable power sequencing in space-constrained portable electronics.

For engineers reviewing the TLV751180280PDSQR datasheet, TLV751180280PDSQR pinout, TLV751180280PDSQR application, or TLV751180280PDSQR equivalent, this page provides verified pin functions, dual-rail voltage accuracy data, thermal shutdown thresholds, enable logic behavior, and real-world load transient performance for embedded microcontroller auxiliary rails and sensor subsystems.

Technical Context

The TLV751180280PDSQR integrates two independent LDO channels sharing a common ground and thermal pad, each with dedicated IN, OUT, EN, and FB pins (FB pins unused in fixed-output variants). Its foldback current-limit architecture reduces thermal stress during short-circuit events, while undervoltage lockout (UVLO) disables regulation until VIN exceeds 1.21 V (rising) to prevent erratic startup.

Each channel features internal soft-start, monotonic VOUT rise, and active output discharge via integrated pulldown MOSFET (RPULLDOWN ≈ 95 Ω). The device operates across 1.5 V to 6.0 V input and supports stable regulation with ≥1 µF ceramic output capacitors - critical for noise-sensitive analog and RF subsystems in compact PCB layouts.

Key Specifications

Pinout & Package

Package: WSON-10 (DSQ), 2.00 mm × 2.00 mm, exposed thermal pad (must be connected to GND plane for thermal performance).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS7A20280PDBVR, TLV751180280PDSQR delivers dual fixed outputs in half the footprint with coordinated enable control, while avoiding the thermal derating and layout overhead of stacking two single-channel LDOs.

Availability

TLV751180280PDSQR is available at Aetrix Electronics and suitable for microcontroller auxiliary rails, wearable sensor subsystems, Wi-Fi access point PHY supplies, and portable point-of-sale terminals requiring stable component supply and long-term production continuity.

Supply support for TLV751180280PDSQR 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 designing analog ICs, embedded processors, and connectivity solutions for industrial, automotive, and consumer markets.

The TLV751 product line delivers high-accuracy, low-noise, dual-channel LDOs optimized for space-constrained portable electronics - targeting applications where dual-rail integration, low quiescent current, and robust protection features are essential.

FAQ

What are the fixed output voltages of the TLV751180280PDSQR?

The TLV751180280PDSQR provides two fixed output voltages: 1.8 V on Channel 1 (OUT1) and 2.8 V on Channel 2 (OUT2). These are factory-trimmed and do not require external feedback resistors. Both outputs maintain ±1.5% accuracy across –40°C to +125°C junction temperature and full load range, as specified in the Electrical Characteristics table of the SBVS385B datasheet.

Does the TLV751180280PDSQR support independent enable control for each channel?

Yes, the TLV751180280PDSQR features two dedicated enable pins: EN1 (Pin 3) controls Channel 1 (1.8 V), and EN2 (Pin 5) controls Channel 2 (2.8 V). Each is active-high with VEN(HI) = 1.0 V (min) and VEN(LO) = 0.3 V (max), allowing independent power sequencing, rail isolation, or dynamic power gating - critical for low-power system-level power management.

What is the recommended input and output capacitance for stable operation of the TLV751180280PDSQR?

The TLV751180280PDSQR is stable with ≥1 µF ceramic input (CIN) and output (COUT) capacitors, per TI's Recommended Operating Conditions. X5R or X7R dielectrics are preferred. Larger values (up to 220 µF) improve transient response and PSRR. Capacitors must be placed within 2 mm of their respective IN/OUT pins, and the thermal pad must be soldered to a solid GND plane for optimal thermal and electrical performance.

How does the active output discharge feature work in the TLV751180280PDSQR?

When either EN pin is driven low, the TLV751180280PDSQR activates an internal pulldown MOSFET (RPULLDOWN ≈ 95 Ω) between the corresponding OUT pin and GND. This discharges the output capacitor rapidly - preventing floating voltages, ensuring deterministic reset behavior, and meeting strict power-down sequencing requirements in systems with multiple voltage domains.

Is the TLV751180280PDSQR suitable for automotive applications?

The TLV751180280PDSQR is rated for –40°C to +125°C operating junction temperature and includes thermal shutdown (170°C trip), UVLO, and foldback current limiting - features aligned with automotive AEC-Q100 stress testing prerequisites. However, it is not officially AEC-Q100 qualified. For production automotive use, consult Texas Instruments' automotive-grade alternatives or verify qualification status directly with TI before design-in.