Texas Instruments TLV70220PDBVT

Overview

TLV70220PDBVT from Texas Instruments is a 2.0-V fixed-output, 300-mA low-dropout (LDO) linear regulator in SOT-23-5 package, featuring 2% output accuracy, 35 μA quiescent current, 260 mV dropout at 300 mA, and active pulldown for fast output discharge - deployed in Li-ion–powered handheld devices requiring stable low-noise bias.

For engineers reviewing the TLV70220PDBVT datasheet, TLV70220PDBVT pinout, TLV70220PDBVT application, or TLV70220PDBVT equivalent, key selection criteria include dropout voltage at full load, shutdown current (<1 μA), PSRR (68 dB @ 1 kHz), thermal shutdown threshold (165°C), and compatibility with 0.1-μF ceramic output capacitors.

Technical Context

The TLV70220PDBVT uses a PMOS pass transistor to achieve low dropout and maintains regulation down to (VIN – VOUT) = 260 mV at 300 mA. Its precision bandgap reference and error amplifier deliver ±2% DC accuracy across –40°C to +125°C junction temperature.

It integrates active pulldown (120 Ω internal resistor), undervoltage lockout (1.9 V), thermal shutdown (165°C trip), and current limit (~320–860 mA). The EN pin enables high-side logic control with 0.9 V turn-on and 0.4 V turn-off thresholds.

Key Specifications

Pinout & Package

TLV70220PDBVT is housed in a 5-pin SOT-23 (DBV) package, 2.90 mm × 1.60 mm body size, with exposed pad not electrically connected. Pin 1 = IN, Pin 2 = GND, Pin 3 = EN, Pin 4 = NC (no connection; may be grounded for thermal improvement), Pin 5 = OUT.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLS820201BXTMA1 and MCP1700T-2002E/TT, TLV70220PDBVT uniquely balances 300-mA drive capability, 35-μA IQ, active pulldown, and thermal/current protection in a compact SOT-23-5 - making it optimal for space-constrained, battery-powered systems needing both efficiency and reliability.

Availability

TLV70220PDBVT is available at Aetrix Electronics and suitable for wearable health sensors, BLE/Wi-Fi IoT modules, and industrial handheld scanners requiring stable component supply with consistent parametric performance and long-term manufacturability.

Supply support for TLV70220PDBVT 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.

The TLV702 series was designed specifically for power-sensitive portable applications - emphasizing ultra-low IQ, fast transient response, and minimal external component count while maintaining ±2% accuracy and robust protection features.

FAQ

What is the minimum input voltage required for TLV70220PDBVT to regulate 2.0 V at 300 mA?

The TLV70220PDBVT requires VIN ≥ VOUT + VDO = 2.0 V + 0.26 V = 2.26 V to maintain regulation at 300 mA. Below this, it enters dropout mode where output tracks input minus dropout voltage. The device remains functional down to 2.0 V input but cannot sustain 2.0 V output under load.

Does TLV70220PDBVT require an input capacitor, and if so, what value is recommended?

An input capacitor is not required for stability but is strongly recommended: a 0.1–1 μF X5R/X7R ceramic capacitor placed close to the IN and GND pins improves transient response, reduces input ripple, and mitigates source impedance effects. For high-dV/dt loads or >2 Ω source impedance, a 1-μF cap is preferred.

How does the active pulldown feature of TLV70220PDBVT operate, and what is its resistance value?

When the EN pin is driven below 0.4 V, TLV70220PDBVT activates an internal 120 Ω pulldown resistor between OUT and GND. This discharges the output capacitance rapidly - e.g., a 1-μF cap drops from 2.0 V to 0.1 V in ~280 μs - enabling precise power sequencing in multi-rail systems.

Can TLV70220PDBVT be used with tantalum or aluminum electrolytic output capacitors?

TLV70220PDBVT is optimized for ceramic capacitors and is only guaranteed stable with ≥0.1 μF effective capacitance and ESR <200 mΩ. Tantalum or aluminum electrolytics typically exceed this ESR and exhibit strong temperature/voltage derating - risking instability or oscillation. Ceramic is the validated solution.

What is the thermal shutdown behavior of TLV70220PDBVT, and does it auto-recover?

TLV70220PDBVT triggers thermal shutdown at ~165°C junction temperature and auto-resets when junction cools to ~145°C. This hysteresis prevents cycling near trip point. Under sustained overload, it cycles on/off - indicating inadequate heatsinking or excessive power dissipation; design must keep TJ ≤125°C for reliable operation.