Texas Instruments TLV70228PDBVR

Overview

TLV70228PDBVR from Texas Instruments is a 300-mA, low-quiescent-current, fixed-output 2.8 V LDO linear regulator in SOT-23-5 package, featuring 2% output accuracy, 35 μA quiescent current, and 37 mV dropout at 50 mA - designed for Li-ion–powered handheld devices requiring stable low-noise supply under light-load and transient conditions.

For engineers reviewing the TLV70228PDBVR datasheet, TLV70228PDBVR pinout, TLV70228PDBVR application, or TLV70228PDBVR equivalent, key selection criteria include dropout performance at 300 mA, active pulldown capability (120 Ω), PSRR (68 dB @ 1 kHz), thermal shutdown (165°C), and compatibility with 0.1 μF ceramic output capacitors in space-constrained layouts.

Technical Context

The TLV70228PDBVR uses a PMOS pass transistor to achieve ultra-low dropout and maintain regulation down to 2 V input. Its precision bandgap reference and error amplifier deliver ±2% DC accuracy across –40°C to +125°C junction temperature, while integrated UVLO (1.9 V) prevents erratic startup during brownout.

This device operates in three functional modes: normal regulation (VIN > VOUT + VDO), dropout (VIN < VOUT + VDO, unregulated output), and current limit (ICL = 320–860 mA). The TLV702P variant adds an internal 120-Ω active pulldown circuit that discharges the output when EN is low, enabling fast power-down sequencing in battery-powered systems.

Key Specifications

Pinout & Package

SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, 0.95 mm height, surface-mount, lead-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLS850F0TESA1 and MCP1700T-2802E/TT, the TLV70228PDBVR uniquely balances 300 mA output, 35 μA IQ, active pulldown, and SOT-23-5 footprint - making it optimal for consumer handhelds needing regulated 2.8 V with minimal board area and controlled power-down.

Availability

TLV70228PDBVR is available at Aetrix Electronics and suitable for wireless handsets, Bluetooth® devices, and Li-ion–powered handheld products requiring stable component supply with consistent parametric performance and long-term manufacturability.

Supply support for TLV70228PDBVR 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 designing analog ICs, embedded processors, and digital signal solutions for industrial, automotive, and personal electronics markets.

The TLV702 series was developed specifically for battery-powered portable equipment demanding low IQ, fast transient response, and small-footprint LDO regulation - with the TLV70228PDBVR targeting 2.8 V rail generation in space- and power-constrained designs.

FAQ

What is the minimum input voltage required for TLV70228PDBVR to regulate 2.8 V at 300 mA?

The TLV70228PDBVR requires VIN ≥ VOUT + VDO = 2.8 V + 220 mV = 3.02 V to maintain regulation at 300 mA. Below this, it enters dropout mode where output tracks input minus dropout voltage. This enables operation down to 3.02 V from a single Li-ion cell near end-of-discharge, maximizing usable battery capacity.

Does TLV70228PDBVR support automatic discharge of the output capacitor when disabled?

Yes, the TLV70228PDBVR includes an internal active pulldown circuit with 120 Ω resistance that discharges the output capacitor when EN is pulled low. This feature enables rapid power-down sequencing in battery-powered systems and prevents floating outputs that could cause unintended logic states in downstream ICs.

Can TLV70228PDBVR operate stably with a 0.1 μF output capacitor?

Yes, TLV70228PDBVR is explicitly designed to be stable with an effective output capacitance of ≥0.1 μF ceramic. This allows use of compact 0402- or 0201-size X5R/X7R capacitors, reducing PCB area and BOM cost - provided the effective capacitance (after bias and temperature derating) remains ≥0.1 μF under operating conditions.

What protection features are integrated into TLV70228PDBVR?

The TLV70228PDBVR integrates thermal shutdown (trip at 165°C, reset at 145°C), output current limiting (320–860 mA), and undervoltage lockout (UVLO trips at 1.9 V). These protect against overtemperature, short-circuit, and brownout conditions - eliminating the need for external protection components in most portable applications.

Is TLV70228PDBVR pin-compatible with other TLV702xx variants in SOT-23-5?

Yes, all TLV702xxP variants in the SOT-23-5 (DBV) package share identical pinout: Pin 1 = IN, Pin 2 = GND, Pin 3 = EN, Pin 4 = NC, Pin 5 = OUT. This allows drop-in replacement across output voltages (1.2 V to 4.8 V) without PCB redesign, simplifying voltage rail optimization during prototyping and production.