Texas Instruments TPS77150DGK

Overview

TPS77150DGK from Texas Instruments is a 5.0-V fixed-output, 150-mA low-dropout (LDO) voltage regulator with integrated open-drain power-on reset (RESET) output, 8-pin MSOP (DGK) package, 115-mV typical dropout at 150 mA, 92-µA quiescent current, and ±2% output voltage tolerance over line/load/temperature - used in microprocessor supply supervision and battery-powered DSP systems.

For engineers reviewing the TPS77150DGK datasheet, TPS77150DGK pinout, TPS77150DGK application, or TPS77150DGK equivalent, key selection criteria include its 220-ms RESET delay, 95% V_OUT trip threshold, compatibility with 1-µF tantalum or 10-µF ceramic output capacitors, and thermal shutdown protection for embedded power management.

Technical Context

The TPS77150DGK uses a PMOS pass element enabling ultra-low dropout (115 mV @ 150 mA) and load-independent quiescent current (92 µA). Its internal comparator monitors regulated output to assert RESET when V_OUT falls below 95% of nominal (4.75 V), with 220-ms delay on power-up release.

It features fast transient response optimized for dynamic loads, operates from –40°C to 125°C junction temperature, supports input voltages from 2.7 V to 10 V, and maintains stability with low-ESR ceramic or tantalum output capacitors as small as 1 µF.

Key Specifications

Pinout & Package

Package: 8-pin MSOP (DGK), 3.0 mm × 3.0 mm × 1.0 mm body, exposed pad not electrically connected.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS77150DGK, TPS76350DBVR offers smaller size but sacrifices 100 mA current headroom and all reset functionality, while TLV70750DQNR trades reset integration for higher current and lower quiescent current - making TPS77150DGK uniquely suited for space-constrained, reset-critical 150-mA applications.

Availability

TPS77150DGK is available at Aetrix Electronics and suitable for microcontroller power supervision, DSP core supply, battery-powered sensor nodes, industrial PLC I/O modules, and portable medical devices requiring stable component supply with long-term lifecycle support.

Supply support for TPS77150DGK 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 technologies, with decades of expertise in precision voltage regulation and power integrity solutions.

The TPS771xx family was designed specifically for low-power, reset-integrated LDO applications in battery-operated and thermally demanding systems - emphasizing ultra-low IQ, fast transient response, and robust supervisor functionality.

FAQ

What is the RESET output behavior of the TPS77150DGK during power-up?

The TPS77150DGK RESET output is an open-drain, active-low signal. At power-up, RESET remains asserted (low) until the regulated 5.0-V output reaches 95% (4.75 V) and sustains that level for 220 ms, after which RESET goes high-impedance. This ensures reliable microprocessor initialization before release from reset. The TPS77150DGK RESET pin requires an external pullup resistor to V_IN or V_OUT.

Can the TPS77150DGK operate with a 1-µF output capacitor?

Yes, the TPS77150DGK is stable with a 1-µF solid tantalum capacitor meeting ESR requirements shown in Figures 18 and 20 of the datasheet. It also supports 10-µF ceramic capacitors with appropriate ESR. Using a 1-µF capacitor reduces board area and BOM cost while maintaining loop stability - a key advantage over older LDOs requiring ≥10-µF minimum.

What is the maximum input voltage rating for the TPS77150DGK?

The absolute maximum input voltage for the TPS77150DGK is 13.5 V, but the recommended operating range is 2.7 V to 10 V. Exceeding 10 V may degrade long-term reliability or trigger overvoltage stress not covered by standard warranty. For 5.0-V output, minimum recommended input is 6.0 V (V_OUT + 1 V) per datasheet guidance.

Does the TPS77150DGK support remote sensing?

Yes - Pin 1 (FB/SENSE) serves as the sense input for fixed-output versions. Connecting it directly to the load-side of the output trace (rather than at the regulator's OUT pins) compensates for IR drop in PCB traces or connectors, improving load regulation accuracy. This feature is especially valuable in high-precision analog or high-current applications where trace resistance affects delivered voltage.

How does the EN pin function on the TPS77150DGK?

The EN pin is an active-low enable input. Driving EN low (≤0.7 V) enables regulation; driving EN high (≥2 V) disables the regulator and reduces quiescent current to <1 µA at 25°C. This sleep mode is essential for ultra-low-power applications like wireless sensor nodes, where the TPS77150DGK can be gated by a microcontroller GPIO to eliminate standby leakage.