Texas Instruments TLV74215PDQNR

Overview

TLV74215PDQNR from Texas Instruments is a 200-mA, fixed 1.5-V output, low-dropout linear voltage regulator 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 TLV74215PDQNR datasheet, TLV74215PDQNR pinout, TLV74215PDQNR application, or TLV74215PDQNR equivalent, key selection criteria include dropout voltage at 150 mA (≤220 mV), active output discharge via 120-Ω internal pulldown, thermal shutdown behavior, and compatibility with 1-µF ceramic output capacitance for stability.

Technical Context

The TLV74215PDQNR uses a PMOS pass transistor architecture enabling ultra-low dropout-e.g., 45 mV at 30 mA and 220 mV at 150 mA for VOUT = 1.5 V-while maintaining high PSRR (55 dB @ 1 MHz) and low noise (45 µVRMS, 100 Hz–100 kHz). Its enable threshold is VIH(EN) ≥ 0.9 V and VIL(EN) ≤ 0.4 V, with shutdown current limited to 1 µA.

It integrates overcurrent protection (240–450 mA current limit), thermal shutdown (trip ~160°C, hysteresis ~20°C), and active output discharge. The exposed thermal pad is electrically tied to GND and must be soldered to the PCB ground plane for thermal performance (RθJB = 117.2°C/W).

Key Specifications

Pinout & Package

TLV74215PDQNR is housed in a 4-pin, 1.0 mm × 1.0 mm X2SON (DQN) package with an exposed thermal pad electrically connected to GND. The compact footprint minimizes PCB area while enabling efficient heat dissipation when the thermal pad is soldered to a dedicated GND copper pour.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV74215PDQNR, TLC76015DBVR offers lower cost but sacrifices 50 mA current capability, 25× higher quiescent current, and 2.9× larger footprint-making it less optimal for space- and battery-limited designs. MCP1700T-1502E/TT provides ultra-low shutdown IQ but omits enable functionality, protection features, and active discharge-requiring external circuitry for safe system-level power sequencing.

Availability

TLV74215PDQNR is available at Aetrix Electronics and suitable for camera modules, point-of-sale terminals, gaming peripherals, building automation sensors, and TV/STB power management requiring stable component supply, consistent parametric performance, and long-term manufacturability.

Supply support for TLV74215PDQNR 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 specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in power management IC design and manufacturing.

The TLV742P series-including TLV74215PDQNR-is engineered for portable, space-constrained applications demanding low noise, high PSRR, and minimal quiescent current, particularly in imaging, sensing, and wireless edge devices.

FAQ

What is the maximum input voltage rating for TLV74215PDQNR?

The absolute maximum input voltage for TLV74215PDQNR is 6 V, but the recommended operating range is 2 V to 5.5 V. Exceeding 6 V risks permanent damage. Operation above 5.5 V may cause excessive power dissipation or violate thermal limits, especially at high output currents. Always maintain VIN within the specified range to ensure reliability and longevity of the TLV74215PDQNR.

Does TLV74215PDQNR require an external pull-up resistor on the EN pin?

No, TLV74215PDQNR does not require an external pull-up on EN. The EN pin has no internal pull-up; however, it draws only 0.01 µA, so a high-impedance MCU GPIO or simple RC network suffices. If always-on operation is needed, connect EN directly to IN. For controlled enable/disable, drive EN with a logic signal meeting VIH(EN) ≥ 0.9 V and VIL(EN) ≤ 0.4 V-no external resistor is necessary for basic functionality of the TLV74215PDQNR.

Can TLV74215PDQNR operate stably with less than 1-µF output capacitance?

Yes-TLV74215PDQNR is stable with ≥0.1 µF effective output capacitance (e.g., a 0.22-µF X5R ceramic derated under bias/temperature). However, 1 µF is recommended for optimal transient response and PSRR. Using <0.1 µF effective capacitance risks instability, overshoot, or oscillation. Always verify effective capacitance at operating voltage and temperature when selecting smaller capacitors for the TLV74215PDQNR.

What is the purpose of the exposed thermal pad on TLV74215PDQNR?

The exposed thermal pad on TLV74215PDQNR is electrically connected to GND and serves two critical functions: (1) lowering junction-to-board thermal resistance (RθJB = 117.2°C/W) to improve power handling, and (2) providing a low-inductance GND path for high-frequency noise. It must be soldered to a solid PCB GND plane using appropriate stencil aperture and reflow profile-omitting this step degrades thermal performance and may cause premature thermal shutdown of the TLV74215PDQNR.

How does the active output discharge feature work in TLV74215PDQNR?

When TLV74215PDQNR enters shutdown (EN ≤ 0.4 V), an internal 120-Ω pulldown resistor connects OUT to GND, discharging the output capacitor with time constant τ ≈ 120 Ω × COUT. This prevents residual voltage from holding downstream circuitry active or causing undefined states. Discharge is automatic and requires no external components-enabling safe, predictable power-down sequencing in battery-powered systems using the TLV74215PDQNR.