Texas Instruments TPS75215QPWP

Overview

TPS75215QPWP from Texas Instruments is a 1.5 V, 2-A fast-transient-response low-dropout (LDO) voltage regulator with integrated power-on reset (RESET) output in a thermally enhanced 20-pin TSSOP PowerPAD™ (PWP) package. It delivers 2 A output current with 210 mV dropout at full load, 75 μA quiescent current, and ±2% output voltage tolerance over line, load, and temperature. It serves as a primary post-regulator for DSP/FPGA core supplies requiring stable, low-noise, high-current bias.

For engineers reviewing the TPS75215QPWP datasheet, TPS75215QPWP pinout, TPS75215QPWP application, or TPS75215QPWP equivalent, key selection criteria include its 1.5 V fixed output, RESET timeout delay (100 ms), dropout performance at 2 A, thermal shutdown threshold (+150°C), and compatibility with 47 μF–100 μF output capacitors with 100 mΩ–10 Ω ESR.

Technical Context

The TPS75215QPWP uses a PMOS pass element enabling ultralow quiescent current (75 μA typical, independent of load) and dropout voltage directly proportional to output current. Its internal 1.1834 V reference feeds a precision error amplifier that monitors the SENSE/OUT node to maintain regulation.

It integrates an open-drain RESET output with 95% VOUT trip threshold, 0.5% hysteresis, and 100-ms delay-designed to assert system reset during undervoltage events on the 1.5 V rail. Enable logic is active-low, supporting TTL-compatible shutdown with <1 μA standby current.

Key Specifications

Pinout & Package

TPS75215QPWP is housed in a 20-pin thermally enhanced TSSOP PowerPAD™ (PWP) package with exposed thermal pad (pins 1, 10, 11, 20) for PCB-level heat sinking. The package supports up to 2.8 W power dissipation with 300 CFM airflow on a high-K multilayer board.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS75215QPWP, TPS75215QPWPR offers identical performance in tape-and-reel format for manufacturing scalability, while TPS75218QPWP provides the same robustness and protection features at 1.8 V-requiring schematic and layout review for voltage-specific design validation.

Availability

TPS75215QPWP is available at Aetrix Electronics and suitable for telecom line cards, server power management, and FPGA/DSP development platforms requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for TPS75215QPWP 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 power regulation solutions.

The TPS752xxQ product line was designed specifically for high-current, low-noise, fast-transient applications in telecom infrastructure, enterprise computing, and digital signal processing systems-emphasizing thermal robustness and integrated system supervision.

FAQ

What is the minimum input voltage required for TPS75215QPWP to regulate 1.5 V at 2 A?

The minimum input voltage is calculated as VOUT + VDO = 1.5 V + 0.21 V = 1.71 V. Per datasheet Section 6.3, VIN must also meet the absolute minimum of 2.7 V for VOUT ≤ 1.8 V-so the effective minimum is 2.7 V. This ensures sufficient headroom for line/load regulation and transient margin. TPS75215QPWP cannot regulate 1.5 V from 1.8 V input.

Does TPS75215QPWP require an external resistor divider for 1.5 V operation?

No. TPS75215QPWP is a fixed-output variant-its 1.5 V regulation is achieved internally. The FB/SENSE pin (pin 7) must be connected directly to the OUTPUT node (pins 8/9) with minimal trace length; no external resistors are needed or used. Resistor dividers apply only to the adjustable TPS75x01Q variant.

How does the RESET output of TPS75215QPWP behave during power-up and fault conditions?

At power-up, RESET remains low until VOUT reaches 95% of 1.5 V (1.425 V), then waits 100 ms before going high-impedance-releasing system reset. During operation, if VOUT drops below 1.425 V (e.g., overload or input sag), RESET immediately pulls low. Hysteresis of 0.5% VOUT (7.5 mV) prevents chatter near the threshold. TPS75215QPWP requires an external pullup resistor on pin 6.

What output capacitor specifications are mandatory for stable operation of TPS75215QPWP?

TPS75215QPWP requires a minimum 47 μF output capacitor with ESR between 100 mΩ and 10 Ω. Solid tantalum, aluminum electrolytic, or multilayer ceramic capacitors meeting these criteria are acceptable. Larger capacitance (e.g., 100 μF) improves load transient response. Avoid RC filters on the SENSE/FB pin-TI explicitly warns they may cause oscillation.

Can TPS75215QPWP be used in parallel to increase current capability?

No. TPS75215QPWP is not designed for parallel operation. Its control loop lacks current-sharing circuitry, and mismatched dropout voltages would cause uneven current distribution-potentially overloading one device. For >2 A requirements, select a higher-current LDO (e.g., TPS75733) or redesign the power architecture with multiple independent rails.