Texas Instruments TLV70729PDQNR

Overview

TLV70729PDQNR from Texas Instruments is a 200-mA, low-noise, low-quiescent-current (25 µA) LDO regulator with fixed 2.9-V output, housed in a 1-mm × 1-mm X2SON (DQN) package. It delivers ±0.5% DC accuracy, supports 2.0–5.5-V input range, achieves 70 dB PSRR at 100 Hz, and remains stable with only 0.1-µF output capacitance - enabling compact, cost-effective power delivery for battery-sensitive portable electronics.

For engineers reviewing the TLV70729PDQNR datasheet, TLV70729PDQNR pinout, TLV70729PDQNR application, or TLV70729PDQNR equivalent, key selection criteria include dropout voltage at 150 mA (220–270 mV), active pulldown resistance (120 Ω), shutdown current (1 µA), thermal shutdown/overcurrent protection, and compatibility with ceramic capacitors down to 0.1 µF under bias.

Technical Context

The TLV70729PDQNR implements a PMOS pass transistor architecture with integrated bandgap reference, enabling ultra-low quiescent current (25 µA typical) and fast load transient response. Its enable logic operates with VIH = 0.9 V and VIL = 0.4 V, supporting direct interfacing with low-voltage GPIOs.

This device belongs to the TLV707P variant family, distinguished by an internal 120-Ω active pulldown circuit that discharges the output during shutdown - a critical feature for systems requiring controlled rail collapse and avoidance of floating nodes in power sequencing.

Key Specifications

Pinout & Package

TLV70729PDQNR uses the DQN (X2SON, 4-pin) package: 1.00 mm × 1.00 mm footprint with bottom thermal pad. The package is optimized for high-density portable PCB layouts and supports reflow-compatible assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLS850F2BHTSA1 and AP7361C-29YG-13, TLV70729PDQNR offers the lowest quiescent current (25 µA), smallest package (1 mm²), and unique active pulldown - making it optimal for consumer portable designs where battery life, board area, and controlled power-down are critical.

Availability

TLV70729PDQNR is available at Aetrix Electronics and suitable for smart phones and wireless handsets, wearable electronics, WLAN add-on cards, and TV set-top boxes requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for TLV70729PDQNR 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 precision analog solutions.

The TLV707 series was designed specifically for portable, battery-powered applications demanding ultra-low quiescent current, small footprint, and robust transient performance - targeting smartphones, wearables, and wireless peripherals.

FAQ

What is the maximum input voltage rating for TLV70729PDQNR?

The absolute maximum input voltage for TLV70729PDQNR is 6.0 V. However, the recommended operating input range is 2.0 V to 5.5 V. Exceeding 5.5 V may compromise reliability or trigger overvoltage protection mechanisms not explicitly specified in the datasheet. Always maintain VIN within the recommended range for guaranteed performance and lifetime.

Does TLV70729PDQNR require an external pull-up resistor on the EN pin?

No, TLV70729PDQNR does not require an external pull-up on EN. Its EN pin has internal logic-level thresholds (VIH = 0.9 V, VIL = 0.4 V) and no internal pull-up. When enable functionality is needed, drive EN actively; when unused, connect EN directly to IN to keep the device permanently enabled. This simplifies design and reduces component count.

Can TLV70729PDQNR operate with a 0.1-µF output capacitor under all load conditions?

Yes - TLV70729PDQNR is explicitly characterized and guaranteed stable with an effective output capacitance of ≥0.1 µF, including under full 200-mA load and across –40°C to +125°C junction temperature. This applies to X5R/X7R ceramics derated for bias and temperature; ensure the selected 0.1-µF part maintains ≥0.1 µF effective value at 2.9 V and operating temperature.

What is the purpose of the 120-Ω pulldown resistor in TLV70729PDQNR?

The 120-Ω internal pulldown resistor in TLV70729PDQNR actively discharges the OUT pin when EN is driven below 0.4 V, ensuring rapid and controlled rail collapse. This prevents floating outputs, avoids unintended device wake-up, and meets strict power sequencing requirements in multi-rail systems - eliminating the need for external discharge circuitry.

How does TLV70729PDQNR compare to standard TLV707 (non-P) variants?

TLV70729PDQNR is the TLV707P variant, distinguished by its integrated 120-Ω active pulldown circuit on the OUT pin during shutdown. Standard TLV707 versions lack this feature and rely on load leakage or external components for discharge. All other electrical specifications - including 2.9-V output, 25-µA IQ, and 0.1-µF stability - are identical between TLV70729PDQNR and non-P equivalents.