Texas Instruments TLV75528PDRVR

Overview

TLV75528PDRVR from Texas Instruments is a 2.8V fixed-output, 500mA low-dropout linear regulator (LDO) in a 5-pin SOT-23-5 (DBV) package. It operates from 1.45V to 5.5V input, delivers ±1% output accuracy at 85°C, features 25μA typical quiescent current, and maintains regulation with only 1μF ceramic output capacitance - ideal for powering MCU core rails in space-constrained portable electronics.

For engineers reviewing the TLV75528PDRVR datasheet, TLV75528PDRVR pinout, TLV75528PDRVR application, or TLV75528PDRVR equivalent, key selection criteria include dropout voltage at full load (≤238mV @ 500mA), active output discharge during shutdown, foldback current limiting, thermal shutdown (165°C), and compatibility with low-ESR ceramic capacitors without external compensation.

Technical Context

The TLV75528PDRVR uses a PMOS pass transistor architecture enabling ultra-low dropout and high PSRR (46dB @ 100kHz). Its internal bandgap reference and error amplifier deliver 1% output accuracy across temperature and line/load variations, while the integrated soft-start ensures monotonic V_OUT rise and limits inrush current during power-up.

Functional modes include normal regulation, dropout (where V_OUT tracks V_IN), and disabled state with active pulldown (120Ω internal resistor). Protection features - undervoltage lockout (1.21–1.44V), foldback current limit, and thermal shutdown - operate independently and are fully specified over −40°C to +125°C junction temperature.

Key Specifications

Pinout & Package

TLV75528PDRVR is packaged in a 2.9mm × 2.8mm SOT-23-5 (DBV) case with standard pinout and no exposed thermal pad. The package supports reflow soldering per JEDEC J-STD-020 and has R_θJA = 100.8°C/W (JEDEC PCB) or 60.3°C/W (EVM layout).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV75528PDRVR, TLC75528QDBVRQ1 adds automotive qualification at no performance trade-off, while TPS7A2028PDQNR reduces quiescent current by 60% and shrinks footprint by 70%, but demands tighter capacitor selection discipline for stability.

Availability

TLV75528PDRVR is available at Aetrix Electronics and suitable for portable medical monitors, battery-powered IoT edge nodes, and industrial handheld terminals requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.

Supply support for TLV75528PDRVR 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 since 1930.

The TLV755P series was developed to address demand for ultra-small, low-I_Q LDOs supporting modern low-voltage MCUs and sensors - emphasizing solution size reduction, battery longevity, and ease of use with minimal external components.

FAQ

What is the maximum input voltage rating for TLV75528PDRVR?

The absolute maximum input voltage for TLV75528PDRVR is 6.0V. Operation above this risks permanent damage. For reliable continuous operation, the recommended maximum input is 5.5V across the full temperature range, as specified in the Recommended Operating Conditions table of the datasheet. Exceeding 5.5V may degrade long-term reliability even if below 6.0V.

Does TLV75528PDRVR require an external pull-up resistor on the EN pin?

No, TLV75528PDRVR does not require an external pull-up on EN. The device has no internal pull-up; however, its enable pin draws only 10nA typical current, so a weak external pull-up (e.g., 100kΩ to VIN) is sufficient if the driving source is open-drain or high-impedance. Direct connection to a 1.8V or 3.3V GPIO is fully supported without additional components.

Can TLV75528PDRVR be used with a 0.47μF output capacitor?

Yes - TLV75528PDRVR is stable with ≥0.47μF ceramic output capacitance, though the datasheet recommends ≥1μF for guaranteed performance across all conditions including worst-case capacitor derating (50%). Using 0.47μF may reduce phase margin marginally but remains within stability specifications per TI's characterization data.

What is the thermal resistance (R_θJA) of TLV75528PDRVR in its SOT-23-5 package?

TLV75528PDRVR in the DBV (SOT-23-5) package has a JEDEC-standard R_θJA of 231.1°C/W and an EVM-layout R_θJA of 100.8°C/W. The lower EVM value reflects optimized PCB layout with 2-layer copper pours and thermal vias; actual board-level performance depends on copper area, layer count, and airflow.

How does the foldback current limit behave during a short-circuit event on TLV75528PDRVR?

During a short-circuit, TLV75528PDRVR initially delivers up to 720mA (typical), then folds back as V_OUT drops below 40% of 2.8V (~1.12V), reducing current toward ~355mA (short-circuit current limit). This reduces power dissipation in the pass transistor, delaying thermal shutdown and improving fault resilience compared to fixed-current limiting.