Texas Instruments TLV74212PDQNR

Overview

TLV74212PDQNR from Texas Instruments is a 200-mA, fixed 1.2-V output, 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 consumes only 25 µA quiescent current when enabled-ideal for space-constrained, battery-powered camera modules.

For engineers reviewing the TLV74212PDQNR datasheet, TLV74212PDQNR pinout, TLV74212PDQNR application, or TLV74212PDQNR equivalent, key selection criteria include dropout voltage at 150 mA (220–270 mV), active output discharge via 120-Ω internal pulldown, thermal shutdown protection, and compatibility with ≥0.1-µF ceramic output capacitors under bias.

Technical Context

The TLV74212PDQNR uses a PMOS pass transistor architecture enabling ultra-low dropout (as low as 45 mV at 30 mA for 1.2 V output) and stable operation with minimal output capacitance. Its enable pin (EN) features TTL-compatible thresholds: VIH = 0.9 V (min), VIL = 0.4 V (max), supporting direct microcontroller GPIO control without level-shifting.

Internal protection includes foldback current limiting (240–450 mA), thermal shutdown activation at ~160°C, and automatic recovery at ~140°C. The exposed thermal pad is electrically tied to GND, requiring PCB connection to ground plane for optimal thermal performance (RθJB = 117.2°C/W).

Key Specifications

Pinout & Package

TLV74212PDQNR is housed in a 1.00 mm × 1.00 mm, 4-pin X2SON (DQN) package with an exposed thermal pad electrically connected to GND. The compact footprint minimizes PCB area while enabling high thermal efficiency via direct GND-plane coupling.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV74212PDQNR, TPL74012PDQNR offers higher current headroom but sacrifices active discharge, while MCP1700T-1202E/MB trades protection and package size for sub-2-µA quiescent current - making TLV74212PDQNR the balanced choice for space-constrained, protected, medium-current applications.

Availability

TLV74212PDQNR is available at Aetrix Electronics and suitable for point-of-sale terminals, camera modules, building automation sensors, and TV/STB power management requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for TLV74212PDQNR 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 ICs and high-reliability signal chain solutions.

The TLV742P series was designed specifically for portable, space-constrained applications demanding low noise, high PSRR, and ultra-small packaging - targeting camera modules, wearables, and IoT edge sensors.

FAQ

What is the minimum input voltage required for TLV74212PDQNR to regulate 1.2 V at 150 mA?

The TLV74212PDQNR requires a minimum input voltage of 1.42 V to maintain regulation at 150 mA, based on its maximum dropout voltage of 270 mV (1.2 V + 0.27 V). At lighter loads (30 mA), dropout drops to 45 mV, allowing regulation down to 1.245 V. Operation below these thresholds results in unregulated output.

Does TLV74212PDQNR require an external pull-up resistor on the EN pin?

No, TLV74212PDQNR does not require an external pull-up on EN. Its enable threshold is TTL-compatible (VIH ≥ 0.9 V), and the pin has negligible leakage (<0.01 µA). When driven directly by a microcontroller GPIO, EN can be left unconnected only if the host MCU guarantees a known state at power-up; otherwise, tie to IN or use a weak pull-up for deterministic startup.

Can TLV74212PDQNR operate with a 0.22-µF output capacitor?

Yes, TLV74212PDQNR is stable with output capacitance as low as 0.1 µF (effective value under bias and temperature), so a 0.22-µF X5R/X7R ceramic capacitor meets the requirement. Ensure the capacitor's effective capacitance - after derating for DC bias and temperature - remains ≥0.1 µF; avoid Y5V/Z5U dielectrics due to excessive drift.

What is the purpose of the thermal pad on TLV74212PDQNR's X2SON package?

The exposed thermal pad on TLV74212PDQNR is electrically connected to GND and serves two critical functions: it lowers junction-to-board thermal resistance (RθJB = 117.2°C/W) to improve power dissipation, and provides a low-inductance GND path for high-frequency noise. It must be soldered to a dedicated PCB GND plane using ≥4 thermal vias for optimal performance.

How does TLV74212PDQNR's active output discharge function work during shutdown?

When TLV74212PDQNR enters shutdown (EN < 0.4 V), an internal 120-Ω resistor connects OUT to GND, discharging the output capacitor with a time constant τ ≈ 120 Ω × COUT. For a typical 1-µF output cap, this yields ~120 µs discharge time - ensuring rapid VOUT decay to prevent unintended biasing or latch-up in downstream circuitry during sleep or reset sequences.