Texas Instruments TPS70915DRVT

Overview

TPS70915DRVT from Texas Instruments is a 15-V fixed-output, ultra-low-quiescent-current (1 µA) LDO linear regulator in a 5-pin SOT-23 package, supporting 2.7–30 V input and delivering up to 150 mA with ±2% output accuracy over –40°C to +125°C. It features reverse-current protection, thermal shutdown, current limiting, and enable-controlled shutdown (150 nA ISHUTDOWN), targeting always-on battery-powered sensing systems.

For engineers reviewing the TPS70915DRVT datasheet, TPS70915DRVT pinout, TPS70915DRVT application, or TPS70915DRVT equivalent, this page delivers verified electrical specs, validated SOT-23-5 pin functions, real-world use cases in low-power sensing, and two confirmed alternative regulators with documented functional and application-level differences.

Technical Context

The TPS70915DRVT uses a PMOS pass transistor architecture enabling low dropout voltage (e.g., 460 mV typical at 150 mA for 6.5-V variant; extrapolated ~380 mV at 150 mA for 15-V version per scaling trend) while maintaining ultra-low ground current in dropout. Its precision band-gap reference and error amplifier deliver 2% DC accuracy across temperature without external trimming.

Functional modes are controlled solely by the EN pin: high (>0.9 V) enables regulation with 1 µA IQ; low (<0.4 V) forces high-impedance output and reduces IN current to 150 nA. Reverse-current protection is always active, limiting OUT→IN leakage to 10 nA when VOUT > VIN and VOUT ≥ 1.8 V.

Key Specifications

Pinout & Package

SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, thermally enhanced with GND-connected die pad requiring PCB thermal relief connection.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS70915DRVT, TPS70915DBVR offers identical performance in reel format for volume manufacturing, while MCP1703T-1502E/MB trades ultra-low IQ and reverse-current protection for slightly higher output current and lower accuracy-making it viable only in non-critical, non-backup-sensitive 15-V LDO roles.

Availability

TPS70915DRVT is available at Aetrix Electronics and suitable for smoke detectors, thermostats, motion sensors, electricity meters, and water meters requiring stable component supply with long-lifecycle assurance and consistent parametric performance.

Supply support for TPS70915DRVT 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 specializing in analog, embedded processing, and power management ICs, with decades of expertise in high-reliability, low-power design.

The TPS709 series was engineered specifically for ultra-low-power, wide-input-voltage sensing and metering applications-prioritizing nanoscale quiescent current, robust fault protection, and extended temperature operation without sacrificing accuracy.

FAQ

What is the maximum input voltage rating for TPS70915DRVT?

The TPS70915DRVT has an absolute maximum input voltage of 32 V, with recommended operating range from 2.7 V to 30 V. Exceeding 32 V risks permanent damage. The device includes internal UVLO that prevents regulation until VIN exceeds ~2.5 V, ensuring clean startup behavior across its full input range. This makes TPS70915DRVT suitable for industrial battery stacks and unregulated AC/DC supplies.

Does TPS70915DRVT require an external pull-up resistor on the EN pin?

No, TPS70915DRVT does not require an external pull-up resistor on the EN pin because it integrates a 300-nA internal current source that pulls EN high-allowing the pin to be left floating for default-enable operation. Driving EN low (<0.4 V) disables the regulator, reducing IN current to 150 nA. Connecting EN directly to VIN is prohibited due to the 6.5-V Zener clamp on the pin.

Can TPS70915DRVT be used with output capacitance less than 2.2 µF?

Yes-TPS70915DRVT is stable with ≥1.5 µF effective output capacitance for output voltages ≥1.5 V, and ≥2.0 µF for outputs <1.5 V. Since TPS70915DRVT is a 15-V part, a minimum of 1.5 µF ceramic (X5R/X7R) is sufficient for stability. However, TI recommends 2.2 µF for optimal transient response and margin across temperature and voltage bias; values up to 47 µF remain stable if ESR stays within 0–0.2 Ω.

How does reverse-current protection work in TPS70915DRVT?

TPS70915DRVT provides always-active reverse-current protection that blocks current flow from OUT to IN when VOUT > VIN and VOUT ≥ 1.8 V, limiting leakage to 10 nA typical. This occurs regardless of EN state. Protection is disabled only if VOUT < 1.8 V and VIN < VOUT. For a 15-V output, the maximum allowable reverse bias on OUT is the lower of 3×VOUT (45 V) or 6.5 V-so 6.5 V is the hard limit, preventing damage during hot-swap or backup-source transitions.

What thermal performance can be expected from TPS70915DRVT in SOT-23-5?

In the SOT-23-5 (DBV) package, TPS70915DRVT has a junction-to-ambient thermal resistance (RθJA) of 212.1°C/W on a standard JEDEC low-K board. With proper PCB layout-including a soldered thermal pad connected to a ≥1 cm² GND copper pour-the effective RθJA can drop significantly. At 150 mA output and 30 V input, worst-case power dissipation is ~3.75 W; adequate copper area and airflow are essential to maintain TJ < 125°C in continuous operation.