Texas Instruments TLV704345DBVRM3

Overview

TLV704345DBVRM3 from Texas Instruments is a 3.45-V fixed-output, 150-mA low-dropout linear regulator with 3.4 μA typical quiescent current, 2.5 V to 24 V input range, and stable operation with ≥0.47 μF output capacitance - designed for battery-powered microcontroller power rails in industrial sensing nodes.

For engineers reviewing the TLV704345DBVRM3 datasheet, TLV704345DBVRM3 pinout, TLV704345DBVRM3 application, or TLV704345DBVRM3 equivalent, this page delivers verified electrical specs, SOT-23-5 terminal mapping, thermal performance data, soft-start behavior, and real-world load/line transient response metrics per TI SBVS148F (Rev F, March 2023).

Technical Context

The TLV704345DBVRM3 implements a CMOS pass transistor architecture with internal bandgap reference and leakage-null control circuitry active below 5 μA load. Its dropout voltage scales linearly with load current - 850 mV at 100 mA - and it features brick-wall overcurrent protection with 160–500 mA trip range depending on junction temperature and chip revision.

It operates across –40°C to +125°C junction temperature, supports 0.1 μF input and ≥1 μF output capacitors (derated to ≥0.47 μF effective), and includes internal soft-start to limit inrush current during power-up - critical for systems with large downstream capacitance or sensitive MCU reset timing.

Key Specifications

Pinout & Package

TLV704345DBVRM3 uses a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm - optimized for space-constrained PCBs and cost-effective reflow assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLC760345DBVR and MCP1703T-345E/MB, TLV704345DBVRM3 uniquely combines 24-V input tolerance, 3.4-μA IQ, internal soft-start, and overcurrent protection in a 5-pin SOT-23 - making it the only option qualified for long-life, wide-input, safety-aware embedded systems.

Availability

TLV704345DBVRM3 is available at Aetrix Electronics and suitable for home automation sensor nodes, industrial PLC I/O modules, medical wearable monitors, and smart lighting controllers requiring stable component supply with guaranteed long-term manufacturability.

Supply support for TLV704345DBVRM3 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 leader delivering analog and embedded processing solutions, with over 90 years of innovation in power management ICs.

The TLV704 product line targets ultra-low-power, wide-input LDO regulation for battery-operated and energy-harvesting systems - emphasizing quiescent current optimization, thermal resilience, and ease of integration in space-constrained designs.

FAQ

What is the maximum input voltage rating for TLV704345DBVRM3?

The TLV704345DBVRM3 is rated for up to 30 V input voltage for the new chip revision (as confirmed in SBVS148F Rev F, March 2023). This absolute maximum rating applies only to the "new chip" variant - legacy versions are limited to 24 V. Always verify the chip revision via TI's packaging markings or orderable part number suffix (e.g., M3 denotes new chip). Exceeding 30 V risks permanent damage.

Does TLV704345DBVRM3 require an input capacitor?

TLV704345DBVRM3 does not require an input capacitor for stability, but TI recommends a 0.1 μF ceramic capacitor placed close to the IN pin to suppress high-frequency noise and counteract source inductance - especially important in systems with long traces or switching supply inputs. This improves transient immunity and prevents potential oscillation during load steps, as documented in Section 8.4 of SBVS148F.

What is the minimum output capacitance needed for TLV704345DBVRM3 stability?

The TLV704345DBVRM3 requires a minimum effective output capacitance of 0.47 μF - meaning the actual capacitor must retain ≥0.47 μF after accounting for DC bias, temperature, and aging derating. TI specifies a nominal 1 μF X7R ceramic capacitor (e.g., 0603, 10 V rating) meets this requirement. Using smaller or lower-voltage-rated caps risks instability and poor transient response, per Section 6.3 and Figure 6-12 in SBVS148F.

How does the soft-start function operate in TLV704345DBVRM3?

The TLV704345DBVRM3 integrates an internal soft-start circuit that controls the output voltage ramp rate during power-up, limiting inrush current into the output capacitor. This prevents voltage overshoot, avoids triggering upstream supply current limits, and ensures reliable MCU reset sequencing. The soft-start time is not externally adjustable and is optimized for typical 1–10 μF output capacitors, as described in Section 7.3.2 and Figure 6-24 of SBVS148F.

Is TLV704345DBVRM3 compatible with ceramic output capacitors?

Yes, TLV704345DBVRM3 is fully compatible with ceramic output capacitors - in fact, TI explicitly qualifies it for stable operation with ≥0.47 μF X5R/X7R ceramics. Unlike older LDOs requiring ESR-based damping, this device uses an internal compensation scheme that eliminates ESR dependency. This enables use of small, low-ESR, high-reliability MLCCs without risk of oscillation, as verified in Section 6.5 Typical Characteristics (Figures 6-3 through 6-6) of SBVS148F.