My Inquiry
My Account
onsemi NCP4629HDT120T5G
- Part No.:
- NCP4629HDT120T5G
- Manufacturer:
- onsemi
- Package:
- TO-252-6, DPAK (5 Leads + Tab)
- Datasheet:
-
NCP4629HDT120T5G.pdf
- Description:
- IC REG LINEAR 12V 500MA DPAK-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,576
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
NCP4629HDT120T5G from onsemi is a CMOS 500 mA low-dropout linear voltage regulator with 12.0 V fixed output, 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 LCD TVs, navigation systems, and office equipment requiring stable 12 V bias.
For engineers reviewing the NCP4629HDT120T5G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at 500 mA (≤0.155 V), PSRR at 1 kHz (≥50 dB), quiescent current (70–130 µA), and DPAK-5 thermal performance (RJA = 53 °C/W).
Technical Context
The NCP4629HDT120T5G implements a CMOS-based LDO architecture with internal reference, error amplifier, and pass transistor-enabling high line regulation (0.05%/V) and low noise (125 µVRMS). 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 restart at 135°C, while current limiting activates at 65 mA under short-circuit conditions. The device is optimized for wide-input industrial supplies where input transients up to 36 V must be tolerated without latch-up or damage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 12.0 V ±2% - ensures stable bias for 12 V logic, displays, and analog circuitry without external feedback. |
| Max Input Voltage | 36 V - supports operation from unregulated 24 V industrial rails with margin for surge and ripple. |
| Output Current | 500 mA min at VIN = VOUT + 1 V - delivers full rated load even with modest headroom, critical for compact power designs. |
| Dropout Voltage | 0.095–0.155 V at 200 mA - enables efficient regulation when input drops near 12.15 V, minimizing heat generation. |
| PSRR | ≥50 dB at 1 kHz for VOUT > 6 V - suppresses switching noise from upstream DC/DC converters feeding the LDO input. |
| Quiescent Current | 70–130 µA - sustains low standby power in always-on systems like set-top boxes and networked peripherals. |
| Thermal Shutdown | 160°C trip / 135°C release - provides self-protecting cyclic operation under sustained overload or poor heatsinking. |
Pinout & Package
Package: DPAK-5 (TO-252-5), Pb-free, with exposed thermal pad internally connected to Pin 3 (GND). Mounting requires direct soldering of thermal pad to PCB copper pour for RJA = 53 °C/W performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Input supply connection | Accepts 4–24 V DC input; must be decoupled with 470 nF ceramic capacitor placed adjacent to pin. |
| 2 (GND) | Ground reference | Primary ground return; electrically tied to thermal pad (Pin 6); must connect to low-impedance GND plane. |
| 3 (GND) | Secondary ground terminal | Redundant ground path; both Pin 2 and Pin 3 must be wired to same GND net to minimize noise coupling. |
| 4 (CE) | Chip enable control | Active-high logic input (2.0–VIN); internal pull-down allows default-off operation if left floating or grounded. |
| 5 (VOUT) | Regulated output | Delivers 12.0 V ±2%; requires 10 µF ceramic output capacitor placed within 3 mm of pin for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Wide input range | 4 V to 24 V operation enables compatibility with 5 V, 12 V, and 24 V system rails without redesign. |
| Low dropout | 0.095 V typical at 200 mA for 12 V output reduces power loss and thermal stress in space-constrained layouts. |
| High PSRR | 50 dB minimum at 1 kHz suppresses ripple from noisy switchers, preserving signal integrity in audio/video subsystems. |
| Integrated protection | Current limit (65 mA) and thermal shutdown (160°C) eliminate need for external fault-handling circuitry. |
| Pb-free DPAK-5 | RoHS-compliant package with exposed thermal pad simplifies thermal management and meets global environmental standards. |
Applications
| Industrial Power Supplies | Automotive Infotainment |
|---|---|
Use Scenario: Providing clean 12 V bias to microcontrollers and sensors in programmable logic controllers (PLCs) and motor drives. IC Role / Device Role / Timing Role: Primary post-regulator delivering stable voltage to digital and analog subsystems after bulk DC/DC conversion. Use Value: ±2% accuracy and 0.155 V max dropout ensure reliable operation during brownout events on 24 V factory bus lines. | Use Scenario: Powering display modules and audio amplifiers in car navigation units and head units. IC Role / Device Role / Timing Role: Local LDO supplying isolated 12 V rail to reduce EMI coupling from vehicle battery and alternator noise. Use Value: 50 dB PSRR at 1 kHz attenuates alternator ripple, preventing audible noise in speaker outputs and flicker in TFT displays. |
| Office Equipment | Consumer Entertainment |
Use Scenario: Regulating 12 V for scanner motors, laser diodes, and interface ICs in multifunction printers and copiers. IC Role / Device Role / Timing Role: Load-switched LDO enabling power gating of peripheral subsystems via CE pin during sleep mode. Use Value: Standby current ≤1 µA and active CE control reduce total system idle power by >30% versus non-enable LDOs. | Use Scenario: Supplying 12 V to tuners, demodulators, and HDMI PHYs in satellite receivers and cable set-top boxes. IC Role / Device Role / Timing Role: Low-noise local regulator decoupling sensitive RF and video signal chains from shared SMPS rails. Use Value: 125 µVRMS output noise prevents visible snow in analog video paths and bit errors in high-speed serial links. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1703T-1202E/MB | 300 mA output, 6 V max input, no CE pin, higher dropout (0.6 V @ 250 mA) | Limited to low-power 12 V loads; unsuitable for 24 V input or high-current industrial use | Select only for cost-sensitive, low-current consumer devices with <12 V input. |
| TLE42754G | 500 mA output, 40 V max input, integrated watchdog, automotive AEC-Q100 qualified | Designed for automotive ECUs; includes reset flag and fail-safe diagnostics not present in NCP4629HDT120T5G | Choose for automotive-grade reliability and functional safety requirements; adds complexity and cost for industrial use. |
Compared with MCP1703T-1202E/MB and TLE42754G, the NCP4629HDT120T5G uniquely balances wide-input capability (24 V), low dropout (0.155 V), and enable control in an industrial-qualified DPAK-5 package-making it optimal for non-automotive 12 V systems needing robustness without over-specification.
Availability
NCP4629HDT120T5G is available at Aetrix Electronics and suitable for industrial power supplies, automotive infotainment systems, and office equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for NCP4629HDT120T5G 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 specializing in energy-efficient power management, analog, sensor, and logic solutions for automotive, industrial, cloud, and consumer markets.
The NCP4629 series belongs to onsemi's high-voltage LDO portfolio, designed specifically for industrial and consumer applications demanding wide-input operation, low quiescent current, and integrated protection in compact surface-mount packages.
FAQ
What is the maximum input voltage rating for the NCP4629HDT120T5G?
The NCP4629HDT120T5G has an absolute maximum input voltage rating of 36 V, with recommended operating input range from 4 V to 24 V. This allows safe operation from nominal 24 V industrial rails while accommodating transient surges up to 36 V without damage or latch-up, as confirmed in the Absolute Maximum Ratings table on page 2 of the datasheet.
Does the NCP4629HDT120T5G require external capacitors, and what values are recommended?
Yes, the NCP4629HDT120T5G requires two external ceramic capacitors: a 470 nF input capacitor (C1) placed adjacent to VIN and GND pins, and a 10 µF output capacitor (C2) placed adjacent to VOUT and GND pins. These values ensure stability, low noise, and optimal transient response, as specified in the Application Information section on page 13 of the datasheet.
How does the CE pin function on the NCP4629HDT120T5G, and what is its threshold voltage?
The CE pin on the NCP4629HDT120T5G is an active-high enable input with a threshold voltage of 2.0 V (minimum) for logic high and 0.4 V (maximum) for logic low. When CE ≥ 2.0 V, the regulator powers up; when CE ≤ 0.4 V, it enters ultra-low standby mode (<1 µA). An internal pull-down current source ensures default-off behavior if the pin is left unconnected.
What thermal performance can be expected from the NCP4629HDT120T5G in DPAK-5 package?
In the DPAK-5 package, the NCP4629HDT120T5G achieves a junction-to-air thermal resistance (RJA) of 53 °C/W when mounted on a standard 1-inch² 2-oz copper pad. This enables continuous 500 mA operation at ambient temperatures up to 75°C with 12 V output, assuming adequate PCB copper area and airflow, per Thermal Characteristics on page 3 of the datasheet.
Is the NCP4629HDT120T5G pin-compatible with other variants in the NCP4629 family?
Yes, all NCP4629 variants-including NCP4629HDT050T5G, NCP4629HDT060T5G, and NCP4629HDT120T5G-share identical DPAK-5 pinout, electrical interface, and thermal characteristics. Only the output voltage differs (5.0 V, 6.0 V, or 12.0 V), allowing drop-in replacement in existing layouts when adjusting system voltage rails.
NCP4629HDT120T5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-252-6, DPAK (5 Leads + Tab)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 24V
- Voltage - Output (Min/Fixed):
- 12V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.155V @ 200mA
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 130 µA
- Current - Supply (Max):
- -
- PSRR:
- 50dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-252 (DPAK)
NCP4629HDT120T5G FAQ
1.How can I place an order for NCP4629HDT120T5G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP4629HDT120T5G on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for NCP4629HDT120T5G reliable?
The price and inventory of NCP4629HDT120T5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP4629HDT120T5G is usually 5 days.
3.What payment methods are accepted for NCP4629HDT120T5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP4629HDT120T5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP4629HDT120T5G?
NCP4629HDT120T5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP4629HDT120T5G order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for NCP4629HDT120T5G?
For technical support, including NCP4629HDT120T5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP4629HDT120T5G requirements.
6.How does Aetrix verify that NCP4629HDT120T5G is sourced from the original manufacturer or authorized distributors?
All NCP4629HDT120T5G products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that NCP4629HDT120T5G meets industry standards.
7.What is the process for return or replacement of NCP4629HDT120T5G?
All NCP4629HDT120T5G units undergo pre-shipment inspection (PSI). If there is an issue with NCP4629HDT120T5G, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The NCP4629HDT120T5G part is unused and in its original packaging.
Return procedure for NCP4629HDT120T5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NCP4629HDT120T5G Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
