Texas Instruments TLV74227PDQNR

Overview

TLV74227PDQNR from Texas Instruments is a 200-mA, fixed-output 2.7-V low-dropout linear voltage regulator (LDO) in a 1-mm × 1-mm X2SON-4 package. It operates from 2 V to 5.5 V input, delivers 0.5% typical output accuracy, achieves 55 dB PSRR at 1 MHz, and draws only 25 µA quiescent current when enabled-ideal for post-regulation of DC-DC outputs in space-constrained portable RF systems.

For engineers reviewing the TLV74227PDQNR datasheet, TLV74227PDQNR pinout, TLV74227PDQNR application, or TLV74227PDQNR equivalent, key selection criteria include its 2.7-V fixed output, active output discharge (120-Ω internal pulldown), thermal/overcurrent protection, and compatibility with ≥0.1-µF ceramic output capacitors under bias.

Technical Context

The TLV74227PDQNR uses a PMOS pass transistor architecture enabling ultra-low dropout (e.g., 40 mV at 30 mA for VOUT > 3.3 V) and stable operation with minimal output capacitance. Its enable logic is active-high with 0.9 V VIH and 0.4 V VIL thresholds, and it integrates an internal 120-Ω active output discharge path during shutdown.

Designed for high PSRR in noisy environments, it maintains 55 dB rejection at 1 MHz while supporting wide input (2–5.5 V) and junction temperature (–40°C to +125°C) ranges. The device includes thermal shutdown (~160°C trip) and current limiting (~240–450 mA), with ground current scaling linearly from 25 µA (IOUT = 0 mA) to ~1.2 mA (IOUT = 200 mA).

Key Specifications

Pinout & Package

TLV74227PDQNR is housed in a 1.00 mm × 1.00 mm, 4-pin X2SON (DQN) package with exposed thermal pad electrically tied to GND. The pad must be soldered to a PCB ground plane for optimal thermal performance (RθJB = 117.2°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLC74227PDQNR and MCP1702T-2702E/MB, TLV74227PDQNR uniquely combines 25-µA IQ, active 120-Ω discharge, and 55-dB 1-MHz PSRR in a 1-mm² package-making it optimal for space- and noise-sensitive portable designs where controlled power-down is mandatory.

Availability

TLV74227PDQNR is available at Aetrix Electronics and suitable for point-of-sale terminals, camera modules, gaming peripherals, video surveillance sensors, and building automation controllers requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for TLV74227PDQNR 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 and embedded processing technologies, with leadership in power management innovation since 1930.

The TLV742P series-including TLV74227PDQNR-is designed for ultra-small, low-noise LDO applications in portable and battery-powered systems where size, efficiency, and PSRR are critical.

FAQ

What is the output voltage tolerance of TLV74227PDQNR over temperature and load?

The TLV74227PDQNR guarantees ±1.5% maximum output voltage deviation across –40°C to +125°C junction temperature and 0–200 mA load range. Typical accuracy is ±0.5% at 25°C, making TLV74227PDQNR suitable for precision analog rails where voltage stability directly impacts sensor or ADC performance.

Does TLV74227PDQNR require an external pull-up on the EN pin?

No-TLV74227PDQNR has no internal EN pull-up. To ensure reliable startup, EN must be driven above 0.9 V (e.g., via MCU GPIO or resistor to VIN). If EN is left floating, the device remains disabled due to leakage paths; connecting EN directly to IN is acceptable when enable control is unnecessary.

Can TLV74227PDQNR operate with a 1.8-V input supply?

No-TLV74227PDQNR requires minimum 2.0 V input per datasheet specifications. At 2.7 V output, 1.8 V input falls below dropout headroom even at zero load. For sub-2-V inputs, consider TI's TPS7A05 (1.8-V min input) or redesign the power tree to ensure ≥2.0 V at TLV74227PDQNR's IN pin.

What is the purpose of the exposed thermal pad on TLV74227PDQNR?

The exposed thermal pad on TLV74227PDQNR is electrically connected to GND and must be soldered to a PCB ground plane. It reduces junction-to-board thermal resistance to 117.2°C/W, enabling full 200-mA output at +85°C ambient without thermal shutdown-critical for sustained operation in sealed enclosures.

Is TLV74227PDQNR compatible with 0.1-µF output capacitors?

Yes-TLV74227PDQNR is stable with ≥0.1 µF effective ceramic capacitance at the OUT pin. However, this refers to capacitance *under operating bias and temperature*, not nominal rating. A 0.1-µF X7R capacitor may drop to <0.05 µF at 2.7 V bias; use ≥1 µF rated or verify effective value via manufacturer derating curves to ensure stability.