Texas Instruments TLV707185PDQNR

Overview

TLV707185PDQNR from Texas Instruments is a 200-mA, low-quiescent-current (25 μA), low-noise LDO regulator with 1.85 V fixed output voltage in a 1-mm × 1-mm DQN (X2SON) package. It delivers 0.5% DC accuracy, supports 70 dB PSRR at 100 Hz, and remains stable with only 0.1 μF output capacitance - enabling compact, cost-effective power delivery for space-constrained portable electronics.

For engineers reviewing the TLV707185PDQNR datasheet, TLV707185PDQNR pinout, TLV707185PDQNR application, or TLV707185PDQNR 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 low-voltage GPIO enable signals (VIH = 0.9 V).

Technical Context

The TLV707185PDQNR implements a PMOS pass transistor architecture with integrated bandgap reference, enabling ultra-low quiescent current (25 μA) and high PSRR (50 dB at 1 MHz). Its active-high enable pin (VIH = 0.9 V) allows direct interfacing with modern low-voltage microcontroller GPIOs.

This variant belongs to the TLV707P family and includes an internal 120-Ω pulldown resistor on the OUT pin during shutdown - ensuring rapid discharge of downstream capacitance without external components. It operates across –40°C to +125°C junction temperature and requires no load for regulation.

Key Specifications

Pinout & Package

Package: DQN (X2SON), 1.00 mm × 1.00 mm, 4-pin with exposed thermal pad - optimized for thermal performance and ultra-compact layouts in handheld and wearable designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPL720185PDQNR and TPS7A05185YKAR, TLV707185PDQNR uniquely balances 25 μA I_Q, 70 dB PSRR, and 120-Ω active pulldown - making it optimal for portable systems requiring both low power and controlled output discharge during sleep transitions.

Availability

TLV707185PDQNR is available at Aetrix Electronics and suitable for smartphone subsystem power, wearable sensor hubs, wireless gaming peripherals, PC add-in card logic rails, and portable medical monitors requiring stable component supply and long-term manufacturability.

Supply support for TLV707185PDQNR 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 and embedded processing technologies, with decades of LDO design expertise and broad automotive, industrial, and consumer product portfolios.

The TLV707P series was engineered specifically for portable RF and battery-powered applications - prioritizing low quiescent current, small size, fast transient response, and robust protection in minimal footprint packages.

FAQ

What is the maximum input voltage rating for TLV707185PDQNR?

The absolute maximum input voltage for TLV707185PDQNR is 6.0 V. Operation beyond this risks permanent damage. For reliable continuous use, TI specifies 2.0 V to 5.5 V as the recommended input range - ensuring proper regulation, thermal safety, and PSRR performance across temperature and load conditions. Always maintain ≥200 mV headroom above 1.85 V output to avoid dropout.

Does TLV707185PDQNR require an external pull-up resistor on the EN pin?

No, TLV707185PDQNR does not require an external pull-up resistor on the EN pin. Its enable threshold is VIH = 0.9 V (min) and VIL = 0.4 V (max), allowing direct connection to a 1.8-V GPIO without level shifting. If always-on operation is desired, EN may be tied directly to IN. The internal EN input current is only 0.01 μA, minimizing loading on the driving source.

What output capacitor value is required for stable operation of TLV707185PDQNR?

TLV707185PDQNR is stable with an effective output capacitance of ≥0.1 μF - meaning the actual capacitance under operating bias and temperature must meet or exceed this value. A 1.0-μF X5R/X7R ceramic capacitor is recommended for best transient performance, but smaller 0.1–0.22 μF 0201/0402 capacitors are viable where space is constrained, provided their derated value remains ≥0.1 μF.

How does the active pulldown feature of TLV707185PDQNR function during shutdown?

During shutdown (EN < 0.4 V), TLV707185PDQNR activates an internal 120-Ω pulldown resistor between OUT and GND. This discharges downstream capacitance with a time constant τ ≈ (120 Ω × R_L)/(120 Ω + R_L) × C_OUT, enabling rapid voltage decay without external components - critical for safe sequencing in multi-rail systems and preventing back-powering of upstream circuitry.

Is TLV707185PDQNR suitable for automotive applications?

TLV707185PDQNR is not AEC-Q200 qualified and is specified for commercial/industrial temperature range (–40°C to +125°C junction), not full automotive grade (–40°C to +150°C). While its operating range overlaps with some automotive cabin applications, TI does not recommend or qualify TLV707185PDQNR for safety-critical or under-hood automotive use. For automotive designs, consult TI's LP5907 or TPS7B8x families instead.