Texas Instruments TLV70237DSER

Overview

TLV70237DSER from Texas Instruments is a 3.7-V fixed-output, 300-mA low-dropout (LDO) linear regulator in a 6-pin WSON package. It delivers 2% output voltage accuracy, 35-μA quiescent current, 260–375-mV dropout at 300 mA, 68-dB PSRR at 1 kHz, and stable operation with ≥0.1-μF ceramic output capacitance. It serves as a primary power rail regulator in space-constrained, battery-powered RF subsystems.

For engineers reviewing the TLV70237DSER datasheet, TLV70237DSER pinout, TLV70237DSER application, or TLV70237DSER equivalent, key selection criteria include ultra-low IQ for standby longevity, minimal input-to-output headroom for Li-ion single-cell systems, thermal/overcurrent protection integrity, and compatibility with small-footprint 0.1-μF X5R/X7R capacitors in high-density layouts.

Technical Context

The TLV70237DSER uses a PMOS pass transistor to achieve low dropout and maintain regulation down to (VIN – VOUT) = 260 mV at full 300-mA load. Its precision bandgap reference and error amplifier ensure ±2% DC accuracy across –40°C to +125°C junction temperature.

It integrates active-high enable (EN), thermal shutdown (165°C trip), current limiting (~320–860 mA), and undervoltage lockout (1.9 V). The TLV702P variant includes active pulldown; however, TLV70237DSER is not a P-suffix part and lacks internal discharge resistance.

Key Specifications

Pinout & Package

TLV70237DSER is packaged in a 1.5-mm × 1.5-mm, 6-pin WSON (DSE) package with wettable flanks, optimized for automated optical inspection (AOI) and thermal performance on compact PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLS850F0TESK and MCP1703T-3702E/MB, TLV70237DSER offers balanced trade-offs: lower dropout than MCP1703 for Li-ion headroom, simpler enable interface than TLS850F0, and broader industrial temperature support without automotive qualification overhead.

Availability

TLV70237DSER is available at Aetrix Electronics and suitable for wireless handsets, BLE sensor nodes, and automotive cabin modules requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for TLV70237DSER 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 digital signal technologies, with leadership in power management innovation.

The TLV702 series was designed for power-sensitive, space-constrained portable electronics-delivering ultra-low IQ, high PSRR, and minimal external component count for battery-operated handheld and IoT devices.

FAQ

What is the minimum input voltage required for TLV70237DSER to regulate at 3.7 V output?

The TLV70237DSER requires VIN ≥ VOUT + VDO. With a typical dropout of 260 mV at 300 mA, it regulates stably from 3.96 V input. At light loads (<10 mA), dropout falls below 100 mV, enabling regulation down to ~3.8 V. Absolute minimum VIN per spec is 2 V, but regulation only occurs above VOUT + VDO under actual load conditions. Always verify with worst-case VDO from the Electrical Characteristics table in the TLV70237DSER datasheet.

Does TLV70237DSER include an active pulldown circuit on the OUT pin?

No, TLV70237DSER does not include active pulldown. That feature is exclusive to TLV702P-series variants (e.g., TLV70237PDSER), which integrate a 120-Ω internal discharge path. TLV70237DSER relies on external circuitry or load leakage to discharge the output during shutdown. Confirm suffix 'P' in the part number when active pulldown is required.

Can TLV70237DSER operate with a 0.1-μF output capacitor, and what type is recommended?

Yes, TLV70237DSER is stable with ≥0.1-μF effective output capacitance. TI recommends X5R or X7R ceramic capacitors in 0402 or 0603 case sizes, as they maintain ≥0.1 μF under bias and temperature. Avoid Y5V/Z5U due to excessive derating. The effective capacitance must be ≥0.1 μF at operating voltage and temperature-not just the rated value. TLV70237DSER's stability margin enables smaller, lower-cost caps versus legacy LDOs requiring ≥1 μF.

What protection features are integrated into TLV70237DSER?

TLV70237DSER integrates thermal shutdown (trip at 165°C, reset at 145°C), output current limiting (320–860 mA depending on VIN), and undervoltage lockout (UVLO activates below 1.9 V). It does not include reverse-voltage protection or overvoltage protection. The PMOS pass device has a body diode that conducts if VOUT > VIN; external reverse-current blocking may be needed in such configurations. All protections are fully specified across –40°C to +125°C junction temperature.

Is TLV70237DSER pin-compatible with other TLV702xx variants in the same package?

Yes, all TLV702xx devices in the 6-pin WSON (DSE) package share identical pinout: Pin 1 = IN, Pin 2 = GND, Pin 3 = OUT, Pins 4–5 = NC, Pin 6 = EN. Output voltage is set internally; changing to another fixed voltage (e.g., TLV70233DSER) requires no PCB layout change. However, TLV702P variants have identical pinout but differ in functional behavior (active pulldown), so electrical compatibility must be verified per application requirements.