Texas Instruments TLV70228QDBVRQ1

Overview

TLV70228QDBVRQ1 from Texas Instruments is an automotive-grade, 300-mA, low-quiescent-current (35 µA), fixed 2.8 V output LDO linear regulator in a 5-pin SOT-23 (DBV) package. It delivers 2% output voltage accuracy over –40°C to +125°C, achieves 37 mV dropout at 50 mA, and provides 68 dB PSRR at 1 kHz - enabling stable power for image sensor rails in automotive camera modules.

For engineers reviewing the TLV70228QDBVRQ1 datasheet, TLV70228QDBVRQ1 pinout, TLV70228QDBVRQ1 application, or TLV70228QDBVRQ1 equivalent, key selection considerations include AEC-Q100 Grade 1 qualification, thermal shutdown/overcurrent protection, 0.1 µF minimum stable output capacitance, and enable-controlled shutdown with 1 µA quiescent current.

Technical Context

The TLV70228QDBVRQ1 uses a PMOS pass transistor architecture to achieve ultra-low dropout and high PSRR. Its precision bandgap reference and error amplifier maintain ±2% output regulation across temperature and load, while integrated UVLO prevents operation below 1.9 V input.

Functional modes include normal regulation (VIN > VOUT + VDO), dropout (VIN < VOUT + VDO), and current-limit protection (IOUT > 320 mA). Shutdown is activated via active-high EN pin (VEN < 0.4 V), reducing ground current to 400 nA.

Key Specifications

Pinout & Package

TLV70228QDBVRQ1 is housed in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm, with exposed pad for thermal enhancement. Pin 4 (NC) must be tied to GND to improve thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV70028QDBVRQ1 and TLS850F2BTTV50, TLV70228QDBVRQ1 uniquely balances ultra-low IQ (35 µA), high PSRR (68 dB), and minimal 0.1 µF output capacitance in a compact SOT-23 - making it optimal for cost-sensitive, space-limited automotive imaging rails where efficiency and noise matter most.

Availability

TLV70228QDBVRQ1 is available at Aetrix Electronics and suitable for automotive camera modules, image sensor power supplies, and microprocessor standby rails requiring stable component supply with AEC-Q100 compliance and long-term production continuity.

Supply support for TLV70228QDBVRQ1 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 and embedded processing solutions for automotive, industrial, and personal electronics markets.

The TLV702-Q1 product line delivers low-I_Q, high-accuracy LDOs optimized for power-sensitive automotive subsystems - especially camera, radar, and infotainment applications demanding AEC-Q100 Grade 1 reliability.

FAQ

What is the maximum input voltage rating for TLV70228QDBVRQ1?

The absolute maximum input voltage for TLV70228QDBVRQ1 is 6.0 V, as specified in the Absolute Maximum Ratings table. Operation above this voltage risks permanent damage. For reliable continuous operation, TI recommends staying within the recommended range of 2 V to 5.5 V - ensuring compatibility with standard automotive 3.3 V and 5 V domains while maintaining margin for transients.

Does TLV70228QDBVRQ1 require an input capacitor?

While TLV70228QDBVRQ1 does not require an input capacitor for stability, TI strongly recommends a 0.1 µF to 1 µF low-ESR ceramic capacitor between IN and GND. This improves transient response, reduces input ripple coupling, and mitigates voltage excursions caused by source impedance - especially critical in automotive environments with noisy battery rails and long harness traces feeding the TLV70228QDBVRQ1.

How does the NC pin (Pin 4) affect thermal performance of TLV70228QDBVRQ1?

Pin 4 of TLV70228QDBVRQ1 is a no-connect terminal, but TI specifies that it must be tied to GND on the PCB to improve thermal dissipation. Doing so lowers the junction-to-board thermal resistance (R_θJB) from 85.9°C/W (with floating NC) to a more favorable value - enhancing power handling capability and reducing risk of thermal shutdown during sustained 300 mA loads at high ambient temperatures.

Can TLV70228QDBVRQ1 operate with zero load current?

Yes, TLV70228QDBVRQ1 regulates its 2.8 V output accurately even with zero load current. The datasheet explicitly states "the devices regulate to specified accuracy with no output load," and ground current remains at just 35 µA under these conditions - making TLV70228QDBVRQ1 ideal for always-on monitoring circuits and real-time clock backup rails where load current may drop to zero.

What is the minimum output capacitance required for stability with TLV70228QDBVRQ1?

TLV70228QDBVRQ1 is stable with an effective output capacitance of ≥0.1 µF - meaning the actual capacitance value after accounting for DC bias and temperature derating must meet or exceed this threshold. A 1 µF X5R/X7R ceramic capacitor is recommended for robust design, but smaller-rated capacitors (e.g., 0.22 µF) can be used if their effective capacitance under operating voltage and temperature stays ≥0.1 µF.