Texas Instruments TPS7A1015PDSET

Overview

TPS7A1015PDSET from Texas Instruments is a 300-mA, ultra-low-dropout linear regulator (LDO) with dual-supply architecture (VIN + VBIAS), supporting input as low as 0.75 V and output down to 0.5 V at ±1.5% accuracy over load, line, and temperature (–40°C to +125°C). It delivers 70 mV max dropout at 300 mA (YKA package) and 90 mV (DSE package), with 1.6 µA VIN quiescent current and 6 µA VBIAS quiescent current - optimized for battery-powered wearable and portable medical devices.

For engineers reviewing the TPS7A1015PDSET datasheet, TPS7A1015PDSET pinout, TPS7A1015PDSET application, or TPS7A1015PDSET equivalent, key selection considerations include its LILO (low-input/low-output) capability enabled by separate BIAS rail, active output discharge (P-version only), 60 dB PSRR at 1 kHz, and WSON-6 (DSE) package compatibility with space-constrained PCB layouts.

Technical Context

The TPS7A1015PDSET implements a dual-rail LDO architecture where VIN supplies the pass element while VBIAS powers internal control circuitry - enabling stable regulation even when VIN is only 70 mV above VOUT. This decoupling allows operation below bandgap voltage thresholds, critical for sub-1.0-V core rails in modern MCUs and analog sensors.

It integrates global UVLO with independent rising/falling thresholds on both VIN (675 mV rising, 600 mV falling) and VBIAS (1.54 V rising, 1.44 V falling), plus thermal shutdown at 160°C and foldback current limiting. The P-suffix variant includes an active pulldown resistor (120 Ω) for monotonic output discharge during disable or fault conditions.

Key Specifications

Pinout & Package

TPS7A1015PDSET is housed in a 6-pin WSON (DSE) package with wettable flanks, 0.5-mm pitch, and exposed thermal pad for efficient heat dissipation. Pin functions are validated per TI SBVS314B datasheet (Rev B, Oct 2018).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-input/low-output LDO applications.

Compared with TPS7A1015PDSET, TPS7A1615DQNR offers simpler single-rail operation but fails to support ultra-low-VIN use cases, while MCP1826T-1502E/DB provides higher current headroom at the cost of 28× higher quiescent current and reduced noise immunity - making TPS7A1015PDSET optimal for battery-limited, space-constrained LILO systems.

Availability

TPS7A1015PDSET is available at Aetrix Electronics and suitable for smart wearables, portable medical sensors, and wireless earbuds requiring stable component supply with guaranteed long-term manufacturability and full traceability.

Supply support for TPS7A1015PDSET 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 and embedded processing technologies, with leadership in power management ICs for portable and industrial applications.

The TPS7A10 family was designed specifically for ultra-low-voltage, ultra-low-power systems - targeting next-generation wearables, hearables, and miniaturized medical devices where traditional LDOs fail due to input/output voltage constraints.

FAQ

What is the minimum input voltage required for TPS7A1015PDSET to regulate 1.5 V output?

The TPS7A1015PDSET requires VIN ≥ 0.75 V minimum, but stable regulation at 1.5 V output demands VIN ≥ VOUT + VDO. With max 90 mV dropout (DSE package), VIN must be ≥ 1.59 V under full 300-mA load. However, the VBIAS rail (1.7–5.5 V) enables operation even if VIN is only 70 mV above VOUT - so VIN can be as low as 1.57 V while maintaining regulation. TPS7A1015PDSET thus achieves true LILO functionality unattainable with conventional single-rail LDOs.

Does TPS7A1015PDSET support active output discharge, and how is it implemented?

Yes, TPS7A1015PDSET (P-suffix) includes active output discharge. When EN is driven low or thermal shutdown activates, an internal 120-Ω pulldown resistor connects OUT to GND. Discharge time depends on COUT and parallel load resistance per τ = 120·RL/(120 + RL)·COUT. This ensures predictable power-down behavior for downstream logic and eliminates floating outputs - critical in systems with multiple power domains sharing a common reset controller. TPS7A1015PDSET's pulldown is not present in non-P variants.

How does the dual-rail architecture of TPS7A1015PDSET improve efficiency compared to standard LDOs?

TPS7A1015PDSET separates power delivery (VIN → pass transistor) from control circuitry (VBIAS → internal biasing), allowing VIN to operate near VOUT while VBIAS supplies stable 1.7–5.5 V to sustain gate drive and error amplifier performance. This eliminates the "dropout penalty" of powering control logic from VIN - standard LDOs require VIN ≥ 1.8 V to run internal circuitry, limiting usable headroom. TPS7A1015PDSET thus achieves >30% higher effective efficiency in 0.75–1.2 V input scenarios, directly extending battery life in wearables and sensors.

What are the recommended input and output capacitors for TPS7A1015PDSET?

TI specifies minimum 2.2 µF ceramic input capacitor (CIN) and 2.2–22 µF ceramic output capacitor (COUT), with 0.1 µF ceramic bias capacitor (CBIAS). All capacitors must be X5R/X7R dielectric with ≤250 mΩ ESR. CIN should be placed within 2 mm of IN and GND pins; COUT must be adjacent to OUT and GND; CBIAS requires same proximity to BIAS and GND. These values ensure stability across –40°C to +125°C and maintain 60 dB PSRR at 1 kHz. Using undersized or high-ESR capacitors risks oscillation and degraded transient response in TPS7A1015PDSET.

Is TPS7A1015PDSET compatible with automatic optical inspection (AOI) and reflow processes for high-volume manufacturing?

Yes, TPS7A1015PDSET in WSON-6 (DSE) package features wettable flanks and JEDEC-standard 0.5-mm pitch - fully compatible with industry-standard AOI systems for solder-joint inspection and IPC-A-610 Class 2/3 reflow profiles. Its 1.50 mm × 1.50 mm body and exposed thermal pad support nitrogen reflow and vapor-phase soldering. TI's packaging documentation confirms MSL-1 rating (unlimited floor life at ≤30°C/85% RH), eliminating bake requirements prior to assembly - ensuring robust yield and reliability in TPS7A1015PDSET-based production lines.