Texas Instruments TPS7A1030PDSER

Overview

TPS7A1030PDSER from Texas Instruments is a 300-mA ultra-low-dropout linear regulator (LDO) with dual-rail operation (VIN and VBIAS), fixed 3.0-V output, 0.75-V minimum input voltage, 70-mV max dropout at 300 mA (YKA package), and ±1.5% output accuracy over –40°C to +125°C. It powers low-voltage cores in space-constrained portable electronics such as smartwatches and earbuds.

For engineers reviewing the TPS7A1030PDSER datasheet, TPS7A1030PDSER pinout, TPS7A1030PDSER application, or TPS7A1030PDSER equivalent, key selection criteria include ultra-low VIN support (down to 0.75 V), BIAS-rail efficiency optimization, active output discharge (P-version), thermal shutdown (160°C), and WSON-6 package compatibility with high-density PCB layouts.

Technical Context

The TPS7A1030PDSER implements a dual-supply architecture where VIN supplies the pass element while VBIAS (1.7–5.5 V) powers internal control circuitry-enabling stable regulation even when VIN is only 70 mV above VOUT. Its global UVLO requires both VIN > 675 mV (rising) and VBIAS > 1.54 V (rising) before enabling regulation.

It features a P-version-specific active pulldown resistor (120 Ω) for monotonic VOUT discharge during disable or thermal shutdown, and delivers 60-dB PSRR at 1 kHz across both VIN and VBIAS inputs. Startup time is 525–1200 µs with monotonic rise.

Key Specifications

Pinout & Package

TPS7A1030PDSER is packaged in a 1.50-mm × 1.50-mm WSON-6 (DSE) package with wettable flanks, optimized for automated optical inspection and thermal performance (R_θJA = 188.8°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-dropout LDO applications.

Compared with TPS7A1033PDSER, the TPS7A1030PDSER provides tighter alignment with 3.0-V core domains; versus TPS7A0530PDQNR, it delivers higher current, dual-rail flexibility, and superior transient performance at the expense of package size and BOM complexity.

Availability

TPS7A1030PDSER is available at Aetrix Electronics and suitable for smart wearables, wireless audio systems, and portable medical devices requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for TPS7A1030PDSER 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 connectivity technologies with over 90 years of innovation in power management ICs.

The TPS7A10 family was designed specifically for ultra-portable, battery-powered applications demanding ultra-low input voltage, ultra-low dropout, and nanoscale packaging-targeting next-generation wearables and hearables.

FAQ

What is the minimum input voltage required for TPS7A1030PDSER to regulate 3.0 V?

The TPS7A1030PDSER requires a minimum VIN of 0.75 V, but stable regulation at 3.0 V demands VIN ≥ VOUT + VDO. With max dropout of 90 mV (DSE package), the practical minimum VIN is 3.09 V. However, the BIAS rail (1.7–5.5 V) enables operation when VIN is as low as 3.0 V by powering internal circuitry separately.

Does TPS7A1030PDSER support active output discharge, and how does it work?

Yes, TPS7A1030PDSER (P-version) includes an internal 120-Ω pulldown resistor activated when EN is driven low or during thermal shutdown. This discharges the output capacitance rapidly-discharge time depends on COUT and parallel load resistance-and eliminates need for external discharge circuitry.

What are the recommended input and output capacitors for TPS7A1030PDSER?

TI specifies ≥2.2 µF ceramic capacitor from IN to GND, ≥0.1 µF from BIAS to GND, and 2.2–22 µF ceramic capacitor from OUT to GND. All capacitors must be X5R/X7R dielectric with ≤250-mΩ ESR; placement must be adjacent to respective pins to ensure stability and transient response.

How does the global UVLO function in TPS7A1030PDSER?

The TPS7A1030PDSER uses independent UVLO circuits on VIN (675 mV rising threshold) and VBIAS (1.54 V rising threshold). Both must exceed their thresholds simultaneously-via internal AND logic-to enable regulation. If either rail drops below its falling threshold (600 mV for VIN, 1.44 V for VBIAS), the device disables immediately.

Is TPS7A1030PDSER pin-compatible with other TPS7A10 variants in WSON-6 package?

Yes, all TPS7A10 variants in the DSE (WSON-6) package-including TPS7A1030PDSER, TPS7A1033PDSER, and TPS7A1025PDSER-are pin-compatible. They share identical pinout, footprint, and thermal characteristics; only output voltage differs, making them drop-in replacements for voltage-scaling design iterations.