Texas Instruments TPS7A03175PYCHR

Overview

TPS7A03175PYCHR from Texas Instruments is an ultra-low-quiescent-current (200nA typ) 200mA LDO voltage regulator with fixed 1.75V output, 1.5% accuracy over temperature, 270mV max dropout at 200mA, and fast transient response (<10µs settling time). It operates from 1.5V to 6.0V input and supports battery-powered wearables, gas meters, and medical sensors where nanoscale IQ and shutdown current (3nA typ) directly extend shelf life and runtime.

For engineers reviewing the TPS7A03175PYCHR datasheet, TPS7A03175PYCHR pinout, TPS7A03175PYCHR application, or TPS7A03175PYCHR equivalent, this page delivers verified package mapping (YCH DSBGA, 0.64mm × 0.64mm), confirmed pin functions (IN/OUT/EN/GND), real-world transient performance data (80mV undershoot at 1mA→50mA step), and two validated alternative parts for low-power system design.

Technical Context

The TPS7A03175PYCHR implements a smart enable architecture with internal pulldown resistor (500kΩ typ at VEN = 0.3V) that ensures reliable disable state even with floating EN, eliminating external pull-down components. Its ultra-low IQ is maintained across full input range (1.5–6.0V) and in dropout mode, enabling operation down to VIN = VOUT + VDO without IQ penalty.

Transient response is optimized via internal compensation stable with ≥1µF ceramic output capacitance; load steps from 1mA to 200mA settle within <10µs with ≤80mV undershoot, critical for MCU wake-up events and sensor burst sampling. UVLO (1.23–1.47V rising threshold) and thermal shutdown (170°C) provide robust fault protection in unattended edge devices.

Key Specifications

Pinout & Package

TPS7A03175PYCHR uses the YCH package: 4-pin DSBGA, 0.637mm × 0.637mm, 0.35mm pitch, with thermal pad internally connected to GND. The package is optimized for minimal PCB area in ultra-compact designs such as hearing aids and implantable monitors.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS7A03175PYCHR, TPS7A02175PYCHR trades 200mA capability for 10× lower IQ, while MCP1703T-17502E/MB offers higher current but sacrifices nanoscale IQ and compact packaging-making TPS7A03175PYCHR the optimal balance for space-constrained, long-life 200mA applications.

Availability

TPS7A03175PYCHR is available at Aetrix Electronics and suitable for wearable electronics, utility metering, and medical diagnostics requiring stable component supply with guaranteed long-term availability and traceable sourcing.

Supply support for TPS7A03175PYCHR 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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.

The TPS7A03 family is designed for ultra-low-power battery-operated systems demanding nanoscale quiescent current, fast transient response, and miniature packaging-targeting wearables, smart meters, and portable medical devices.

FAQ

What is the exact output voltage tolerance of the TPS7A03175PYCHR over its full operating temperature range?

The TPS7A03175PYCHR has a guaranteed output voltage accuracy of ±1.5% over the junction temperature range of –40°C to +125°C. This specification applies to all fixed-output variants including TPS7A03175PYCHR and ensures stable 1.75V regulation for precision analog circuits and low-voltage MCUs across industrial environments.

Does the TPS7A03175PYCHR require an external pull-down resistor on the EN pin?

No, the TPS7A03175PYCHR features a built-in smart enable pulldown resistor (500kΩ typical at VEN = 0.3V) that actively disables the device when EN is floating or driven low. This eliminates the need for external pull-down components, simplifying layout and reducing BOM cost in space-constrained designs using the YCH DSBGA package.

What is the minimum output capacitance required for stability with the TPS7A03175PYCHR?

The TPS7A03175PYCHR is stable with a minimum effective output capacitance of 1µF ceramic (X5R/X7R). While 0.5µF is the absolute minimum for basic stability, the 1µF value is specified to ensure full transient performance-including <10µs settling time and ≤80mV undershoot during 1mA→50mA load steps-critical for real-time sensor and wireless applications.

Can the TPS7A03175PYCHR operate from a single-cell alkaline battery?

Yes, the TPS7A03175PYCHR supports input voltages from 1.5V to 6.0V, making it compatible with single-cell alkaline (1.5V nominal, ~0.9–1.6V discharge range) and lithium primary (up to 3.6V) batteries. Its 270mV max dropout at 200mA allows regulation down to ~2.02V input for 1.75V output, covering most of the usable alkaline discharge curve.

How does the TPS7A03175PYCHR handle input voltage transients, such as those caused by switching regulators or hot-plug events?

The TPS7A03175PYCHR demonstrates robust line transient response: for a 2.8V→4.8V input step at 200mA load, output deviation is limited to ±6mV with <5µs recovery (Figure 5-22). Combined with 55dB PSRR at 1kHz and integrated UVLO hysteresis, it maintains clean 1.75V output during noisy supply conditions common in mixed-signal embedded systems.