Texas Instruments TPS7A1130PDRVT

Overview

TPS7A1130PDRVT from Texas Instruments is a 500-mA ultra-low dropout linear regulator (LDO) with dual-rail operation (IN and BIAS), fixed 3.0-V output, 0.75-V minimum input voltage, 140-mV maximum dropout at 500 mA (DRV package), and ±1.5% output accuracy over load, line, and temperature. It powers core rails in space-constrained, battery-operated devices such as smart earbuds and camera modules.

For engineers reviewing the TPS7A1130PDRVT datasheet, TPS7A1130PDRVT pinout, TPS7A1130PDRVT application, or TPS7A1130PDRVT equivalent, key selection criteria include LILO (low-input/low-output) support, active output discharge, bias-supply PSRR, thermal shutdown behavior, and WSON-6 package layout compatibility.

Technical Context

The TPS7A1130PDRVT implements a dual-supply architecture: the IN pin delivers regulated current while the BIAS pin powers internal circuitry, enabling stable regulation down to 0.5 V output from inputs as low as 0.75 V. Its global UVLO combines independent IN and BIAS undervoltage detection via AND logic.

It features foldback current limiting, thermal shutdown at 160°C, active pulldown discharge (120-Ω resistor), and high PSRR (64 dB at 1 kHz on VIN, 56 dB on VBIAS). The device supports 2.2–22 µF output capacitance with ESR ≤ 250 mΩ and requires separate 2.2-µF input and 0.1-µF bias capacitors.

Key Specifications

Pinout & Package

TPS7A1130PDRVT is housed in a 2.0-mm × 2.0-mm, 6-pin WSON package (DRV) with exposed thermal pad. The thermal pad must be connected to a large-area ground plane for optimal thermal performance (R_θJB = 41.1°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPL7407LPWPR and TPS7A2030PDQNR, the TPS7A1130PDRVT uniquely supports LILO operation via dedicated BIAS rail, provides active output discharge for sequencing-critical systems, and delivers 500 mA with lower dropout-making it irreplaceable in next-gen wearables requiring sub-1-V input headroom.

Availability

TPS7A1130PDRVT is available at Aetrix Electronics and suitable for smart earbuds, camera modules, and wearable health sensors requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for TPS7A1130PDRVT 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 designing analog ICs, embedded processors, and digital signal solutions for industrial, automotive, and consumer markets.

The TPS7A11 family was engineered specifically for ultra-low-voltage, ultra-low-power portable electronics-enabling reliable regulation in LILO configurations where traditional LDOs fail due to insufficient headroom.

FAQ

What is the minimum input voltage required for TPS7A1130PDRVT to regulate 3.0 V?

The TPS7A1130PDRVT requires a minimum input voltage of 0.75 V on the IN pin, but regulation at 3.0 V output demands sufficient headroom: VIN must be ≥ VOUT + VDO. With max dropout of 140 mV at 500 mA, VIN must be ≥ 3.14 V. The BIAS pin (1.7–5.5 V) powers internal circuitry independently, enabling this low-VIN operation.

Does TPS7A1130PDRVT support active output discharge, and how does it work?

Yes, TPS7A1130PDRVT includes active output discharge. When the EN pin 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 t = 120·RL/(120+RL)·COUT. This ensures rapid, controlled VOUT collapse for safe power sequencing in multi-rail systems.

What are the capacitor requirements for stable operation of TPS7A1130PDRVT?

TPS7A1130PDRVT requires three capacitors: 2.2-µF ceramic on IN to GND, 0.1-µF ceramic on BIAS to GND, and 2.2–22-µF ceramic on OUT to GND with ESR ≤ 250 mΩ. All capacitors must be placed as close as possible to their respective pins. These values ensure stability, transient response, and PSRR performance across temperature and load.

How does the global UVLO function in TPS7A1130PDRVT?

The TPS7A1130PDRVT implements global UVLO using two independent circuits: IN UVLO (675-mV rising / 600-mV falling) and BIAS UVLO (1.54-V rising / 1.44-V falling). Both signals feed an internal AND gate-regulator enables only when both rails exceed their rising thresholds, and disables if either falls below its falling threshold, preventing erratic startup during brownout.

Can TPS7A1130PDRVT be used without connecting the EN pin?

Yes, but EN must be tied to a valid logic level. If enable functionality is unused, EN must be connected to IN (only if VIN > 0.9 V) or to BIAS. Leaving EN floating is prohibited. Connecting EN to IN simplifies design in always-on applications, while tying to BIAS allows independent control of enable timing relative to the main input rail.