Texas Instruments TLV70237DSET

Overview

TLV70237DSET from Texas Instruments is a 300-mA, low-quiescent-current, low-dropout linear regulator with fixed 3.7-V output, 2% DC accuracy, 35-μA quiescent current, and 260-mV dropout at 300 mA. It operates from 2 V to 5.5 V input and features thermal shutdown, overcurrent protection, and stable operation with ≥0.1-μF ceramic output capacitance - ideal for Li-ion–powered handheld devices requiring ultra-low standby power.

For engineers reviewing the TLV70237DSET datasheet, TLV70237DSET pinout, TLV70237DSET application, or TLV70237DSET equivalent, key selection considerations include dropout voltage at full load, PSRR at 1 kHz (68 dB), enable threshold (0.9 V high / 0.4 V low), ground current vs. load (35 μA no-load / 370 μA at 300 mA), and WSON-6 package thermal resistance (R_θJA = 321.3°C/W).

Technical Context

The TLV70237DSET uses a PMOS pass transistor architecture enabling low dropout and high PSRR. Its precision bandgap reference and error amplifier deliver 2% output accuracy across –40°C to +125°C junction temperature, while integrated UVLO ensures startup only above 1.9 V input.

It supports active-high enable control with 0.04-μA enable pin current and enters shutdown drawing ≤2-μA total supply current. The device remains stable with minimal 0.1-μF effective output capacitance, reducing BOM cost and board area versus traditional LDOs requiring ≥1-μF ceramics.

Key Specifications

Pinout & Package

TLV70237DSET is packaged in a 1.5-mm × 1.5-mm, 6-pin WSON (DSE) package with wettable flanks, optimized for automated optical inspection and thermal performance (R_θJA = 321.3°C/W). Pin 4 and Pin 5 are NC (no connection) and may 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 TLS850F0TESK and MCP1700T-3702E/MB, TLV70237DSET delivers the optimal balance of low IQ (35 μA), low dropout (260 mV), integrated enable and protection, and WSON-6 thermal performance - making it the preferred choice for high-volume, space-constrained, battery-operated consumer and industrial IoT devices.

Availability

TLV70237DSET is available at Aetrix Electronics and suitable for wireless sensor nodes, BLE/Zigbee modules, Li-ion–powered handhelds, WLAN adapters, and portable medical monitors requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for TLV70237DSET 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 and embedded processing technologies, with leadership in power management ICs and signal chain solutions.

The TLV702 series is designed specifically for power-sensitive portable electronics, delivering ultra-low quiescent current, high PSRR, and minimal external component count in miniature WSON and SOT-23 packages.

FAQ

What is the minimum input voltage required for TLV70237DSET to regulate 3.7 V at 300 mA?

The TLV70237DSET requires a minimum input voltage of 3.96 V to maintain regulation at 300 mA load, based on its maximum dropout voltage of 260 mV (3.7 V + 0.26 V). Below this, the device enters dropout mode and output voltage drops linearly with input. This specification is verified across –40°C to +125°C junction temperature per Electrical Characteristics table in the TLV70237DSET datasheet.

Can TLV70237DSET operate stably with a 0.1-μF output capacitor?

Yes, TLV70237DSET is explicitly characterized and guaranteed stable with an effective output capacitance of ≥0.1 μF, including bias- and temperature-derated values. This enables use of smaller, lower-cost X5R/X7R MLCCs in size-constrained designs. Stability is maintained regardless of ESR, provided it remains below 200 mΩ - a key differentiator from legacy LDOs requiring ≥1-μF capacitors.

Does TLV70237DSET include thermal shutdown protection?

Yes, TLV70237DSET integrates thermal shutdown that disables the output when junction temperature exceeds 165°C. The device automatically recovers when temperature falls to ~145°C. This protection is active across the full operating range and is documented in Section 6.5 (Electrical Characteristics) of the TLV70237DSET datasheet, with thermal metrics (R_θJA = 321.3°C/W) provided for WSON-6 package design validation.

What is the enable pin behavior of TLV70237DSET during power-up?

The TLV70237DSET enable pin (Pin 6) is active-high with V_EN(HI) = 0.9 V (min) and V_EN(LO) = 0.4 V (max). During power-up, the device remains off until EN rises above 0.9 V; no internal pull-up exists, so an external GPIO or resistor network must drive EN. Input current into EN is only 0.04 μA, minimizing loading on control sources - a verified parameter in the TLV70237DSET Electrical Characteristics table.

Is TLV70237DSET pin-compatible with other TLV702xx variants in the WSON-6 package?

Yes, all TLV702xx devices in the DSE (WSON-6) package share identical pinout: Pin 1 = IN, Pin 2 = GND, Pin 3 = OUT, Pins 4–5 = NC, Pin 6 = EN. This allows drop-in replacement across output voltages (1.2 V to 4.8 V) without PCB redesign. Pin compatibility is confirmed in the "Pin Configuration and Functions" section (Page 3) of the TLV70237DSET datasheet, with identical top-view diagrams for all WSON variants.