Texas Instruments TLV70022DDCT

Overview

TLV70022DDCT from Texas Instruments is a 200-mA, low-quiescent-current, low-dropout linear regulator with fixed 2.2-V output, PMOS pass element, 2% DC accuracy, 31-μA quiescent current, and 43-mV dropout at 50 mA. It delivers stable power to RF-sensitive subsystems in portable battery-powered devices such as Bluetooth modules and ZigBee nodes.

For engineers reviewing the TLV70022DDCT datasheet, TLV70022DDCT pinout, TLV70022DDCT application, or TLV70022DDCT equivalent, key selection criteria include dropout voltage under load, PSRR at 1 kHz, thermal shutdown threshold, enable pin logic thresholds, and minimum effective output capacitance for stability.

Technical Context

The TLV70022DDCT uses a PMOS pass transistor architecture enabling ultra-low dropout and eliminating reverse-current conduction limitations of NMOS-based LDOs. Its precision bandgap reference and error amplifier deliver ±2% output accuracy across –40°C to +125°C junction temperature.

It integrates active-high enable (EN), undervoltage lockout (UVLO) at 1.9 V, thermal shutdown at 160°C, and current limit of 220–860 mA. The device operates stably with ≥0.1 μF effective output capacitance-enabling use of small-footprint, bias-voltage-derated ceramic capacitors.

Key Specifications

Pinout & Package

TLV70022DDCT is housed in a 5-pin SOT-23-5 (DDC) package measuring 2.90 mm × 1.60 mm, with exposed pad for thermal enhancement. Pin 1 = IN, Pin 2 = GND, Pin 3 = EN, Pin 4 = NC, Pin 5 = OUT.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLS82022DSET and MCP1700T-2202E/TT, TLV70022DDCT uniquely balances 200-mA capability, 31-μA IQ, integrated EN and thermal protection, and 5.5-V input support-making it optimal for non-automotive portable RF systems requiring robustness and flexibility.

Availability

TLV70022DDCT is available at Aetrix Electronics and suitable for wireless sensor nodes, BLE audio peripherals, ZigBee® router modules, industrial handheld scanners, and other portable electronics requiring stable component supply with long-term lifecycle assurance.

Supply support for TLV70022DDCT 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 delivering analog and embedded processing solutions for industrial, automotive, personal electronics, and communications markets.

The TLV700 series was designed specifically for power-sensitive portable devices-emphasizing low IQ, low noise, high PSRR, and minimal external component count for compact battery-powered systems.

FAQ

What is the minimum input voltage required for TLV70022DDCT to regulate 2.2 V at 200 mA?

The TLV70022DDCT requires VIN ≥ VOUT + VDO to maintain regulation. At 200 mA and 2.2-V output, the dropout voltage is not explicitly specified in the datasheet-but extrapolating from the 175-mV value at 200 mA for VOUT = 2.35 V, and scaling per PMOS behavior, VIN must be ≥2.2 V + ~170 mV = 2.37 V. For guaranteed performance, TI specifies 2 V minimum input across all conditions, but regulation at full load requires ≥2.37 V.

Can TLV70022DDCT operate without an input capacitor?

While the TLV70022DDCT does not require an input capacitor for stability, TI strongly recommends a 0.1–1 μF low-ESR ceramic capacitor from IN to GND. This improves transient response, reduces input ripple coupling, and prevents voltage excursions during load steps-especially critical when source impedance exceeds 2 Ω or the device is remote from the power source.

Does TLV70022DDCT support reverse-voltage protection on the OUT pin?

No. The TLV70022DDCT contains a PMOS pass transistor with an intrinsic body diode from OUT to IN. If OUT exceeds IN, uncontrolled reverse current flows. For applications where reverse voltage is possible (e.g., hot-swap, backup battery), an external Schottky diode or ideal diode controller must be added in series with OUT to limit reverse current to ≤5% of rated output current.

What is the maximum allowable output capacitance for TLV70022DDCT?

The TLV70022DDCT has no upper limit on output capacitance. Larger COUT values reduce load transient undershoot/overshoot magnitude but increase recovery time. TI confirms stability with ≥0.1 μF effective capacitance; standard practice uses 1 μF X5R/X7R ceramics. Electrolytic or high-ESR capacitors are discouraged as they degrade PSRR and transient response.

How does the enable pin (EN) behave during power-up of TLV70022DDCT?

The TLV70022DDCT EN pin is active-high with hysteresis. When VIN rises, the device remains off until EN reaches ≥0.9 V. If EN is tied to VIN, startup occurs after VIN crosses 0.9 V-ensuring internal circuitry is powered before regulation begins. During shutdown, EN must fall below 0.4 V to disable the LDO and reduce ground current to 1–2 μA.