Texas Instruments TPS71219DRCT

Overview

TPS71219DRCT from Texas Instruments is a dual-channel, 250 mA ultra-low-noise LDO voltage regulator with fixed 1.8 V output on CH1 and adjustable output on CH2. It delivers 125 mV typical dropout at 250 mA, 65 dB PSRR at 10 kHz, and 32 µV_RMS output noise (with 0.01 µF NR capacitor), designed for RF-sensitive applications such as cellular transceivers and portable wireless audio.

For engineers reviewing the TPS71219DRCT datasheet, TPS71219DRCT pinout, TPS71219DRCT application, or TPS71219DRCT equivalent, key selection criteria include independent enable control per channel, thermal shutdown at +160°C, stable operation with 2.2 µF ceramic output capacitors, and compatibility with low-ESR ceramic input bypassing.

Technical Context

The TPS71219DRCT integrates two independent PMOS-based LDOs sharing a common IN and GND, each with dedicated EN, OUT, and NR pins. CH1 is factory-fixed to 1.8 V; CH2 is adjustable via external FB2 resistor divider (V_REF = 1.225 V). Both channels feature active pull-down for fast load-transient recovery and internal current limiting (~600 mA typical).

Its noise-reduction architecture uses a 250 kΩ internal resistor between NR and the bandgap reference, enabling external RC filtering (e.g., 0.01 µF to GND) to reduce output noise by >70% versus no NR cap. Startup time is 60 ms with 0.001 µF NR capacitor, and thermal protection disables both outputs above +160°C junction temperature.

Key Specifications

Pinout & Package

TPS71219DRCT is housed in a thermally enhanced 3 mm × 3 mm × 1 mm SON-10 (DRC) package with exposed thermal pad (Pin 5/GND and thermal pad connected internally). The package supports high-power-density PCB layouts and achieves θ_JA = 49.6°C/W on JEDEC high-K board.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS71229DRCT and TPS7A4700RGWR, the TPS71219DRCT uniquely balances dual-rail integration, 1.8 V fixed output for modern low-voltage logic, and proven RF-grade noise/PSRR in a compact 3 mm × 3 mm SON package - making it optimal for space-constrained, battery-powered wireless devices requiring two clean, independently controlled supplies.

Availability

TPS71219DRCT is available at Aetrix Electronics and suitable for cellular handsets, wireless audio SoCs, digital camera modules, and FPGA I/O bank regulation requiring stable component supply across automotive (-40°C to +125°C) and industrial operating conditions.

Supply support for TPS71219DRCT 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 for high-reliability applications.

The TPS712xx family was designed specifically for noise-sensitive RF and portable electronics, emphasizing ultra-low noise, high PSRR, fast transient response, and dual-channel integration in thermally efficient packages.

FAQ

What is the output voltage configuration of the TPS71219DRCT?

The TPS71219DRCT features a dual-output configuration: Channel 1 (OUT1) is factory-fixed at 1.8 V, while Channel 2 (OUT2) is adjustable from 1.2 V to 5.5 V using an external resistor divider on the FB2 pin. This allows flexible power sequencing for mixed-voltage systems without requiring separate regulators for each rail.

Can the TPS71219DRCT operate with ceramic output capacitors?

Yes, the TPS71219DRCT is fully stable with low-ESR 2.2 µF ceramic output capacitors on both OUT1 and OUT2. This eliminates the need for bulkier, higher-ESR tantalum or aluminum electrolytic capacitors - reducing board area, cost, and improving reliability in portable designs.

How does the NR (Noise Reduction) pin function in the TPS71219DRCT?

The NR pin on the TPS71219DRCT connects internally to the voltage reference through a 250 kΩ resistor. Adding an external ceramic capacitor (e.g., 0.01 µF) from NR to GND forms a low-pass filter that reduces reference noise, lowering total output noise from ~80 × V_OUT to ~11.8 × V_OUT - critical for RF and precision analog circuits powered by the TPS71219DRCT.

What thermal protection features does the TPS71219DRCT include?

The TPS71219DRCT incorporates thermal shutdown that disables both outputs when junction temperature exceeds +160°C, and automatically re-enables them once temperature falls below +140°C. This protects the device and downstream circuitry during sustained overload or inadequate heatsinking - a key safety feature for sealed consumer electronics using the TPS71219DRCT.

Is the TPS71219DRCT pin-compatible with other members of the TPS712xx family?

Yes, all TPS712xx variants including TPS71219DRCT, TPS71229DRCT, and TPS71247DRCT share identical SON-10 (DRC) package pinout and footprint. This enables drop-in replacement across different output voltage combinations - for example, swapping TPS71219DRCT (1.8 V / adj) for TPS71247DRCT (1.8 V / 2.85 V) requires no PCB changes.