onsemi NCP4629HDT060T5G

Overview

NCP4629HDT060T5G from onsemi is a 500 mA, 6.0 V fixed-output CMOS LDO linear voltage regulator with 4 V to 24 V input range, ±2% output accuracy, and integrated thermal shutdown and current limiting. It operates across −40°C to 105°C and is used in industrial power rails for navigation systems and office equipment requiring stable low-noise 6 V bias.

For engineers reviewing the NCP4629HDT060T5G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at 500 mA (0.115–0.180 V), PSRR of 60 dB at 1 kHz (VOUT ≤ 6.0 V), quiescent current of 70–130 µA, and DPAK-5 thermal resistance of 53 °C/W.

Technical Context

The NCP4629HDT060T5G implements a CMOS-based LDO architecture with internal reference, error amplifier, and pass transistor-enabling high line regulation (0.05%/V) and low output noise (125 µV_RMS). Its enable pin (CE) features active-high logic with 2.0 V threshold and internal pull-down, supporting controlled power sequencing.

Thermal protection includes shutdown at 160°C and automatic recovery at 135°C, while current limiting activates at ~65 mA during short-circuit events. The device uses a single external 10 µF ceramic output capacitor for stability and requires a 470 nF input capacitor placed adjacent to VIN and GND pins.

Key Specifications

Pinout & Package

Package: DPAK-5 (TO-252-5), Pb-free, with exposed thermal pad internally connected to Pin 2 (GND). Mounting requires direct PCB copper pour connection to Pin 2 for optimal thermal performance (R_JA = 53 °C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCP1703T-6002E/MB and TLE42754G, the NCP4629HDT060T5G uniquely balances 500 mA drive, 6 V fixed output, and industrial temperature range in DPAK-5-making it optimal for cost-sensitive, thermally demanding 6 V industrial power rails where AEC-Q100 is not required.

Availability

NCP4629HDT060T5G is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive navigation systems, office equipment print engines, and home appliance control boards requiring stable component supply with traceable sourcing and long-term lifecycle support.

Supply support for NCP4629HDT060T5G 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

onsemi (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient electronics, delivering silicon solutions for automotive, industrial, cloud, and IoT applications.

The NCP4629HDT060T5G belongs to onsemi's high-voltage LDO family designed specifically for industrial and automotive power management-emphasizing wide input range, robust protection, and thermal resilience in harsh environments.

FAQ

What is the maximum input voltage rating for the NCP4629HDT060T5G?

The NCP4629HDT060T5G has an absolute maximum input voltage rating of 36 V, but its recommended operating input voltage range is 4 V to 24 V. Operation above 24 V may exceed specified electrical characteristics and is not guaranteed per the datasheet. For reliable 6 V output regulation, maintain VIN within 4–24 V and ensure sufficient dropout margin-especially at full 500 mA load where dropout reaches up to 0.180 V.

Does the NCP4629HDT060T5G require external components for stable operation?

Yes, the NCP4629HDT060T5G requires two external capacitors: a 470 nF ceramic capacitor between VIN and GND (placed adjacent to Pins 1 and 2), and a 10 µF ceramic capacitor between VOUT and GND (placed adjacent to Pins 5 and 2 or 3). These are mandatory for stability, transient response, and EMI suppression. Tantalum capacitors are discouraged due to higher ESR, which may cause oscillation. No resistors or additional compensation networks are needed for basic operation.

How does the CE pin function on the NCP4629HDT060T5G?

The CE (Chip Enable) pin on the NCP4629HDT060T5G is active-high with a threshold of 2.0 V minimum for "H" and 0.4 V maximum for "L". When CE ≥ 2.0 V, the regulator powers up and delivers 6.0 V to VOUT; when CE ≤ 0.4 V, output is disabled and quiescent current drops to 0.1–1 µA. An internal pull-down current source eliminates the need for an external resistor if CE is tied directly to VIN for always-on operation.

What thermal performance can be expected from the NCP4629HDT060T5G in DPAK-5 package?

In the DPAK-5 package, the NCP4629HDT060T5G achieves a junction-to-air thermal resistance (R_JA) of 53 °C/W when mounted on a standard 1-inch² copper pad. This enables continuous 500 mA operation at ambient temperatures up to ~75°C with 24 V input (dissipating ~9 W), assuming adequate PCB copper area and airflow. The internal thermal shutdown triggers at 160°C and releases at 135°C, providing fail-safe protection during overload or poor heatsinking conditions.

Is the NCP4629HDT060T5G pin-compatible with other variants in the NCP4629 family?

Yes, all NCP4629 variants-including NCP4629HDT050T5G (5.0 V), NCP4629HDT060T5G (6.0 V), and NCP4629HDT120T5G (12.0 V)-share identical DPAK-5 pinout, electrical interface, and thermal pad configuration. Output voltage is factory-trimmed and non-adjustable; swapping variants requires only board-level voltage verification and no layout changes. All support the same enable logic, protection features, and capacitor requirements.