Texas Instruments TPS71918-12DRVT

Overview

TPS71918-12DRVT from Texas Instruments is a dual-output, 200mA low-noise LDO regulator with independent enables, delivering 1.8V on OUT1 and 1.2V on OUT2. It features 70µVRMS output noise, 65dB PSRR at 1kHz, 230mV dropout at 200mA, and operates from 2.7V to 6.5V input. Used in camera modules and WLAN baseband power rails where clean, sequenced dual supplies are required.

For engineers reviewing the TPS71918-12DRVT datasheet, TPS71918-12DRVT pinout, TPS71918-12DRVT application, or TPS71918-12DRVT equivalent, this page provides verified specifications, DRV package layout guidance, dual-rail sequencing behavior, active pulldown functionality (TPS719xx family), and validated alternative options for portable power management designs.

Technical Context

The TPS71918-12DRVT integrates two independent PMOS-based LDOs sharing a common IN and GND, each with dedicated EN1/EN2 control and factory-programmed fixed outputs (1.8V/1.2V). Its BiCMOS process enables ultra-low 90µA total quiescent current with both regulators enabled and stable operation with ≥1µF ceramic output capacitors.

Unlike TPS718xx, the TPS719xx variant includes active output pulldown circuitry on both channels-discharging OUT1 and OUT2 rapidly during shutdown-and incorporates undervoltage lockout (UVLO) with 2.45V turn-on threshold and 150mV hysteresis to prevent erratic startup under brownout conditions.

Key Specifications

Pinout & Package

TPS71918-12DRVT uses the DRV package: 2mm × 2mm WSON-6 (SON-6) with exposed thermal pad. The package is RoHS-compliant, moisture-sensitivity level 1, and rated for –40°C to +125°C junction temperature.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-output LDO applications.

Compared with TPS71918-12DRVT, TPS71918-28DRVT offers higher second-rail voltage for I/O compatibility, while TPS71818-12DRVT reduces cost by omitting active pulldown-making the TPS71918-12DRVT optimal for noise-critical, fast-shutdown applications like imaging and audio.

Availability

TPS71918-12DRVT is available at Aetrix Electronics and suitable for mobile camera modules, WLAN baseband power rails, and handheld medical sensor hubs requiring stable component supply, full production traceability, and long-term lifecycle support.

Supply support for TPS71918-12DRVT 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 expertise in precision power management ICs.

The TPS719xx family was designed specifically for portable electronics demanding ultra-low noise, dual-rail flexibility, and active discharge-targeting camera, wireless, and wearable applications where size, efficiency, and signal integrity are critical.

FAQ

What are the exact output voltages of the TPS71918-12DRVT?

The TPS71918-12DRVT delivers precisely 1.8V on OUT1 and 1.2V on OUT2. These values are factory-programmed via EEPROM and specified with ±3% accuracy across –40°C to +125°C junction temperature, 0–200mA load, and 2.7V–6.5V input range. The "18-12" suffix in the part number explicitly denotes these nominal outputs.

Does the TPS71918-12DRVT include active output pulldown?

Yes, the TPS71918-12DRVT includes active pulldown circuitry on both OUT1 and OUT2-characteristic of the TPS719xx family. When either EN1 or EN2 is driven low, the corresponding output is actively discharged to GND with a defined time constant, preventing floating nodes or unintended bias in downstream circuitry.

What package type and footprint does the TPS71918-12DRVT use?

The TPS71918-12DRVT uses the DRV package: a 2mm × 2mm WSON-6 (SON-6) with an exposed thermal pad. Pinout is OUT1–IN–OUT2–EN2–GND–EN1 (top view). TI provides recommended solder pad layouts and thermal vias in the official datasheet (SBVS088C) for optimal thermal performance.

Can the TPS71918-12DRVT operate with a 2.5V input supply?

No-the absolute minimum input voltage for the TPS71918-12DRVT is 2.7V, as specified in the Electrical Characteristics table. At 1.2V output, the minimum required headroom is VDO + VOUT ≈ 0.23V + 1.2V = 1.43V, but the datasheet enforces 2.7V as the floor regardless of dropout, ensuring proper internal biasing and UVLO margin.

How does the TPS71918-12DRVT handle thermal overload?

The TPS71918-12DRVT incorporates thermal shutdown that disables both outputs when junction temperature reaches approximately +160°C. Output resumes automatically once the die cools to ~+140°C. This cycling protects the device during sustained overload but indicates inadequate heatsinking-designers must verify RθJA and ambient conditions to avoid repeated tripping.