Texas Instruments TLV702125QDBVRQ1

Overview

TLV702125QDBVRQ1 from Texas Instruments is an automotive-grade, fixed-output 1.25 V low-dropout linear regulator with 300 mA output current capability, 35 µA quiescent current, and 2% output voltage accuracy over –40°C to +125°C ambient temperature. It uses a PMOS pass element, supports enable control, and is qualified per AEC-Q100 Grade 1 for use in automotive camera modules and microprocessor rails.

For engineers reviewing the TLV702125QDBVRQ1 datasheet, TLV702125QDBVRQ1 pinout, TLV702125QDBVRQ1 application, or TLV702125QDBVRQ1 equivalent, key selection criteria include dropout voltage at 300 mA (260–375 mV), PSRR of 68 dB at 1 kHz, stability with ≥0.1 µF ceramic output capacitance, thermal shutdown at 165°C, and SOT-23-5 (DBV) package compatibility with space-constrained PCB layouts.

Technical Context

The TLV702125QDBVRQ1 implements a precision bandgap reference and error amplifier to achieve ±2% DC output accuracy across temperature and load. Its PMOS pass transistor enables low dropout operation-37 mV at 50 mA and 220 mV at 300 mA for VOUT = 2.8 V-and supports stable regulation down to zero load current.

Functional modes include normal regulation, dropout (where VOUT = VIN – VDO), current limiting (ICL = 320–860 mA), and thermal shutdown (trip at 165°C, reset at 145°C). Enable logic is active-high with VEN(high) ≥ 0.9 V and VEN(low) ≤ 0.4 V, delivering 1 µA shutdown current.

Key Specifications

Pinout & Package

TLV702125QDBVRQ1 is packaged in a 5-pin SOT-23 (DBV) case 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 TLV702125QDBVRQ1, TLV70212QDBVRQ1 offers identical automotive qualification and performance at 1.2 V, while TPS7A0512PDBVR trades automotive compliance and output current for lower quiescent current-making it viable only outside automotive safety domains.

Availability

TLV702125QDBVRQ1 is available at Aetrix Electronics and suitable for automotive camera modules, image sensor power supplies, and microprocessor auxiliary rails requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.

Supply support for TLV702125QDBVRQ1 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, embedded processing, and automotive electronics, with leadership in power management innovation.

The TLV702-Q1 product line delivers automotive-qualified, low-I_Q LDO regulators optimized for power-sensitive applications including camera modules, infotainment systems, and body electronics where precision, noise immunity, and thermal robustness are critical.

FAQ

What is the output voltage tolerance of TLV702125QDBVRQ1 over temperature and load?

The TLV702125QDBVRQ1 maintains ±2% output voltage accuracy across –40°C to +125°C ambient temperature and 0–300 mA load range. This specification includes initial tolerance, line regulation (≤5 mV), and load regulation (≤15 mV), ensuring reliable operation in automotive thermal environments without external trimming.

Does TLV702125QDBVRQ1 require an input capacitor for stability?

No, TLV702125QDBVRQ1 does not require an input capacitor for stability, but a 0.1–1 µF low-ESR ceramic capacitor from IN to GND is recommended to improve transient response and suppress input ripple. This is especially important when the device is located far from the power source or driven by a high-impedance supply.

What is the minimum output capacitance required for TLV702125QDBVRQ1 to remain stable?

The TLV702125QDBVRQ1 is stable with an effective output capacitance of ≥0.1 µF-defined as the capacitance value after accounting for bias voltage and temperature derating. A 1 µF X5R/X7R ceramic capacitor is recommended, but smaller-rated capacitors (e.g., 0.22 µF) may be used if their effective capacitance remains ≥0.1 µF under operating conditions.

How does the enable pin (EN) function on TLV702125QDBVRQ1?

The EN pin on TLV702125QDBVRQ1 is active-high: the regulator turns on when EN ≥ 0.9 V and enters shutdown (I_Q ≈ 400 nA) when EN ≤ 0.4 V. If enable functionality is unused, EN must be tied to IN to ensure continuous operation. The pin draws only 0.04 µA, enabling direct interface with low-drive GPIOs.

Is TLV702125QDBVRQ1 pin-compatible with other variants in the TLV702-Q1 family?

Yes, all TLV702-Q1 variants-including TLV702125QDBVRQ1-in the SOT-23-5 (DBV) package share identical pinout (IN, GND, EN, NC, OUT). This allows board-level substitution across output voltages (1.2 V to 4.8 V) without layout changes, provided the NC pin is grounded and output capacitor values meet each variant's stability requirements.