Texas Instruments TPS76630D

Overview

TPS76630D from Texas Instruments is a fixed-output 3.0V, 250mA low-dropout linear regulator in an 8-pin SOIC package. It operates from 4.0V to 10V input (legacy chip spec), delivers ±3% output accuracy over load and temperature, features open-drain power-good signaling, enable control, thermal shutdown, and overcurrent protection - used for powering microcontrollers and sensors in HVAC control modules.

For engineers reviewing the TPS76630D datasheet, TPS76630D pinout, TPS76630D application, or TPS76630D equivalent, key selection criteria include dropout voltage at full load (270mV typ), power-supply ripple rejection (63dB at 1kHz), quiescent current (35μA typ), thermal shutdown threshold (150°C), and compatibility with ≥4.7μF output capacitance.

Technical Context

The TPS76630D implements a PNP pass transistor architecture enabling stable regulation with minimal headroom. Its internal error amplifier compares feedback from the fixed 3.0V output against a precision reference, while the EN pin provides TTL-compatible active-low enable logic with 0.8V low-level threshold and 2V high-level threshold.

Power-good (PG) is an open-drain output asserting high when VOUT reaches 92–98% of nominal and exhibiting 0.5% hysteresis; PG requires an external pullup resistor. The device supports stable operation with ceramic or tantalum output capacitors ≥4.7μF and ESR ≤10Ω.

Key Specifications

Pinout & Package

TPS76630D is housed in an 8-pin SOIC (D) package measuring 4.9mm × 6mm with standard JEDEC MS-012AC footprint. Pin 1 is NC/FB (not connected for fixed-output version); pins 5 and 6 are paralleled IN inputs; pins 7 and 8 are paralleled OUT outputs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS76730D and MCP1700T-3002E/MB, the TPS76630D offers balanced performance in SOIC packaging with integrated power-good and enable - ideal for cost-sensitive industrial controls where board space and feature set are trade-offs.

Availability

TPS76630D is available at Aetrix Electronics and suitable for residential HVAC systems, automotive body electronics, and smart appliance control modules requiring stable component supply and long-term industrial lifecycle support.

Supply support for TPS76630D 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, designing and manufacturing analog ICs, embedded processors, and connectivity solutions for industrial, automotive, and consumer markets.

The TPS766 series was developed as a general-purpose, high-stability LDO family targeting cost-sensitive industrial controls and home appliance power management, emphasizing thermal robustness and ease of use with minimal external components.

FAQ

What is the maximum input voltage rating for the TPS76630D?

The TPS76630D has an absolute maximum input voltage of 13.5V. Its recommended operating input range is 4.0V to 10V for guaranteed 3.0V output regulation. Exceeding 13.5V risks permanent damage per the Absolute Maximum Ratings table in the TI datasheet SLVS237E.

Does the TPS76630D require an external feedback resistor network?

No. The TPS76630D is a fixed-output variant with internal resistor divider setting 3.0V output. Pin 1 (NC/FB) is not connected internally; it may be left floating or tied to GND for improved thermal performance, but no external resistors are needed or supported.

What output capacitor value and type are required for stable operation of the TPS76630D?

The TPS76630D requires a minimum 4.7μF output capacitor with ESR ≤10Ω. Ceramic, tantalum, or aluminum electrolytic types are acceptable. TI recommends placing the capacitor as close as possible to pins 7 and 8 (OUT) and pin 3 (GND) to minimize loop inductance and ensure transient stability.

How does the power-good (PG) pin function on the TPS76630D?

The PG pin on the TPS76630D is an open-drain output that goes high (when pulled up externally) once VOUT reaches ≥92% of 3.0V and remains high until VOUT falls below that threshold minus 0.5% hysteresis. It is commonly used to generate a power-on reset signal for downstream logic.

Is the TPS76630D RoHS compliant and lead-free?

Yes. The TPS76630D is manufactured in TI's RoHS-compliant, lead-free SOIC (D) package per JEDEC J-STD-020 moisture sensitivity level 3, and meets IPC/JEDEC J-STD-033 handling requirements. Full compliance documentation is available in TI's official product change notices.