Texas Instruments TLV70734PDQNR

Overview

TLV70734PDQNR from Texas Instruments is a 200-mA, low-noise, low-quiescent-current (25 µA) LDO regulator with fixed 3.4-V output, designed for power-sensitive portable electronics. It delivers ±0.5% DC accuracy, supports 0.1-µF minimum output capacitance, and features high PSRR (70 dB at 100 Hz), thermal shutdown, overcurrent protection, and active pulldown (120-Ω) for rapid output discharge in shutdown mode - ideal for battery-powered RF subsystems in wearables and mobile handsets.

For engineers reviewing the TLV70734PDQNR datasheet, TLV70734PDQNR pinout, TLV70734PDQNR application, or TLV70734PDQNR equivalent, key selection criteria include dropout voltage at 150 mA (220–270 mV for 3.4 V), shutdown current (1 µA), EN logic thresholds (VIH = 0.9 V, VIL = 0.4 V), and stability with ultra-small ceramic capacitors - critical for space-constrained, low-power designs requiring fast transient response and minimal bias current.

Technical Context

The TLV70734PDQNR employs a PMOS pass transistor architecture enabling low dropout and reverse-voltage tolerance via its intrinsic body diode. Its internal bandgap reference and error amplifier deliver tight regulation across –40°C to +125°C junction temperature, with load regulation of ≤20 mV (0–150 mA) and line regulation of ≤5 mV (2.0–5.5 V input).

It integrates active-high enable logic with hysteresis-free thresholding and a dedicated pulldown circuit (exclusive to TLV707P variants) that discharges the output through a 120-Ω internal resistor during shutdown - eliminating external discharge paths and reducing system-level BOM count in always-on sensor nodes.

Key Specifications

Pinout & Package

TLV70734PDQNR is housed in a 1.0 mm × 1.0 mm DQN (X2SON-4) package with wettable flank terminations for automated optical inspection. The thermal pad on the bottom enhances heat dissipation in high-density layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLS850F3TLE and AP7361D-34SG-7, TLV70734PDQNR uniquely balances ultra-low IQ (25 µA), 0.1-µF stability, and active pulldown in a 1.0-mm² package - making it the only option optimized for space- and battery-constrained portable RF systems requiring rapid, controlled power sequencing.

Availability

TLV70734PDQNR is available at Aetrix Electronics and suitable for wearable electronics, Bluetooth audio accessories, and smartphone camera modules requiring stable component supply with consistent parametric performance across production lots.

Supply support for TLV70734PDQNR 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 delivering analog and embedded processing solutions for industrial, automotive, personal electronics, and communications markets.

The TLV707 series was engineered specifically for portable RF applications demanding low noise, low IQ, and minimal board space - addressing design constraints in smartphones, wearables, and wireless IoT endpoints.

FAQ

What is the maximum input voltage rating for TLV70734PDQNR?

The absolute maximum input voltage for TLV70734PDQNR is 6.0 V. Operation beyond this risks permanent damage. For reliable long-term performance, TI specifies a recommended operating range of 2.0 V to 5.5 V - ensuring compatibility with single-cell Li-ion (4.2 V max) and multi-cell alkaline supplies while maintaining specified dropout and regulation performance.

Does TLV70734PDQNR require an external pull-up resistor on the EN pin?

No, TLV70734PDQNR does not require an external pull-up on EN. Its EN pin has an internal weak pull-down, and the device operates correctly when EN is driven directly by a GPIO (0.9 V threshold for enable, 0.4 V for disable). Connecting EN to IN is acceptable if always-on operation is desired - a common practice in simplified portable designs where enable control is unnecessary.

Can TLV70734PDQNR be used with a 0.1-µF output capacitor in production designs?

Yes, TLV70734PDQNR is explicitly characterized and guaranteed stable with a minimum effective output capacitance of 0.1 µF - including derating for bias voltage and temperature. TI validates this with X5R/X7R ceramics; designs using 0.1-µF 0201 capacitors (e.g., Murata GRM033R61A104K080) meet all stability and transient specifications per the datasheet.

How does the pulldown circuit in TLV70734PDQNR function during shutdown?

During shutdown (EN < 0.4 V), TLV70734PDQNR activates an internal 120-Ω pulldown resistor between OUT and GND. This discharges the output node with a time constant dependent on load resistance and COUT, typically achieving <100 µs discharge for 1-µF caps and 10-kΩ loads - preventing unintended wake-up or latch-up in systems with shared power rails or level-shifted interfaces.

Is TLV70734PDQNR compatible with ceramic capacitors having high DC bias derating?

Yes, TLV70734PDQNR's 0.1-µF stability requirement refers to *effective* capacitance under operating conditions - meaning the actual capacitance after accounting for DC bias and temperature effects. A 1-µF 0402 X5R capacitor rated at 6.3 V may measure only 0.15 µF at 3.4 V bias and 85°C, which still satisfies the 0.1-µF minimum and ensures loop stability per TI's characterization data.