Texas Instruments TPS76830QD

Overview

TPS76830QD from Texas Instruments is a 3.0-V fixed-output, 1-A low-dropout linear regulator with PMOS pass element, 230-mV typical dropout at 1 A, ±2% output accuracy over –40°C to +125°C, and 85-µA typical quiescent current. It delivers stable power to microcontrollers and analog sensors in battery-powered industrial instrumentation.

For engineers reviewing the TPS76830QD datasheet, TPS76830QD pinout, TPS76830QD application, or TPS76830QD equivalent, key selection criteria include dropout voltage at full load, power-good assertion threshold (92–98% VO), thermal shutdown behavior (150°C trip), SOIC-8 package thermal resistance (172°C/W), and compatibility with 10-µF/60-mΩ–1.5-Ω ESR output capacitors.

Technical Context

The TPS76830QD uses a voltage-driven PMOS pass transistor, enabling ultralow and load-independent quiescent current (85 µA typ) and eliminating PNP saturation issues during dropout. Its internal 1.1834-V reference feeds a high-impedance feedback amplifier for precise regulation.

Power-good (PG) is an open-drain output asserting high when VO ≥ 92% of nominal and deasserting below 98% VO with 0.5% hysteresis; EN enables shutdown mode reducing IQ to <1 µA. Stability requires 10-µF output capacitor with ESR between 60 mΩ and 1.5 Ω.

Key Specifications

Pinout & Package

TPS76830QD is housed in an 8-pin SOIC (D) package with exposed pad not connected internally. Thermal resistance is 172°C/W (junction-to-ambient, no airflow). Pin 1 is GND; pins 3 and 4 are parallel IN inputs; pins 5 and 6 are parallel OUT outputs; pin 8 is open-drain PG.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS76830QPWP, the TPS76830QD offers identical regulation performance in a smaller SOIC-8 footprint but higher thermal resistance; compared with TLV70030DDCR, the TPS76830QD delivers triple the output current and maintains fast transient response with larger capacitors, making it appropriate for demanding 1-A industrial loads.

Availability

TPS76830QD is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical devices, and automotive body control modules requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for TPS76830QD 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.

The TPS768xxQ family was designed specifically for high-reliability, wide-temperature industrial and automotive applications requiring fast transient response, low quiescent current, and integrated power-good monitoring in compact packages.

FAQ

What is the maximum input voltage rating for the TPS76830QD?

The absolute maximum input voltage for the TPS76830QD is 13.5 V, but the recommended operating range is 2.7 V to 10 V. Exceeding 10 V may cause excessive power dissipation or reliability degradation. The minimum input is VO + VDO or 2.7 V, whichever is greater - for TPS76830QD, that is 3.35 V at full load. Always observe derating curves in the datasheet for thermal safety.

Does the TPS76830QD require a minimum load current to maintain regulation?

No, the TPS76830QD is stable at zero load and does not require a minimum load current. This is confirmed in the Application Information section of the datasheet, which explicitly states "The TPS768xxQ family is stable even at zero load; no minimum load is required for operation." This feature simplifies design in standby or intermittent-load systems.

How does the power-good (PG) output of the TPS76830QD behave during startup and fault conditions?

The PG output of the TPS76830QD is an open-drain signal that goes high when VO reaches ≥92% of 3.0 V (≥2.76 V) and remains high until VO falls below 98% (2.94 V), providing 0.5% hysteresis. It does not assert during brief transients or within the ±2% regulation band - only on sustained undervoltage. PG requires an external pullup resistor and can drive reset logic or low-battery indicators.

Can the TPS76830QD be used with ceramic output capacitors?

Yes, the TPS76830QD supports multilayer ceramic capacitors (MLCCs) as output capacitors, provided they meet the 10-µF minimum capacitance and 60-mΩ to 1.5-Ω ESR requirements. Low-ESR ceramics are acceptable because the device's internal compensation is optimized for this range - verified in stability region plots (Figures 22–25) using 4.7 µF and 22 µF MLCCs.

What is the thermal shutdown recovery behavior of the TPS76830QD?

The TPS76830QD triggers thermal shutdown at approximately 150°C junction temperature and automatically resumes regulation once the junction cools to ~130°C. This hysteresis prevents oscillation during thermal limiting. During shutdown, the output enters high-impedance state and quiescent current drops below 1 µA. Recovery is seamless and does not require cycling EN or input power.