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onsemi NCP4625DSN12T1G
- Part No.:
- NCP4625DSN12T1G
- Manufacturer:
- onsemi
- Package:
- SC-74A, SOT-753
- Datasheet:
-
NCP4625DSN12T1G.pdf
- Description:
- IC REG LINEAR 1.2V 300MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,919
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Product details
Overview
NCP4625DSN12T1G from onsemi is a 300 mA, 1.2 V fixed-output CMOS low-dropout linear regulator in SOT-23-5 package, operating from 2.6 V to 10 V input, featuring 23 µA quiescent current, 770 mV dropout at 300 mA, and ±1% output voltage accuracy over −40°C to +85°C - used for powering low-voltage logic in portable battery-powered devices.
For engineers reviewing the NCP4625DSN12T1G datasheet, pinout, applications, or equivalent options, key selection considerations include its auto-discharge function (D-version), thermal shutdown at 165°C, CE pin enable threshold (1.7 V), stability with 1 µF ceramic output capacitor, and suitability for space-constrained designs requiring <1 mm profile.
Technical Context
The NCP4625DSN12T1G implements a CMOS-based LDO architecture with an internal N-channel pass transistor, enabling low dropout and high PSRR (70 dB at 1 kHz). Its chip-enable circuitry includes an internal pull-down current source (0.3 µA) and logic-level compatible CE threshold (VCEH = 1.7 V, VCEL = 0.8 V).
As a D-version variant, it integrates an active output discharge transistor between VOUT and GND, activated during disable to rapidly deplete output capacitance - critical for sequencing-sensitive systems. It achieves stable regulation with only 1 µF ceramic output capacitance and supports input-to-output differentials as low as 200 mV at light load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2 V ±1% (25°C), ±2.3% over −40°C to +85°C - ensures reliable core voltage for 1.2 V microcontrollers and FPGAs. |
| Max Output Current | 300 mA continuous - sufficient for single-core ARM Cortex-M processors or sensor hubs with burst loads. |
| Dropout Voltage | 770 mV at 300 mA (VIN = 2.8 V); 200 mV at 100 mA (VIN = 3.0 V) - enables operation from two Li-ion cells (down to ~2.8 V under load). |
| Quiescent Current | 23 µA typical - extends battery life in always-on monitoring circuits without compromising startup speed. |
| PSRR | 70 dB at 1 kHz - suppresses switching noise from upstream DC-DC converters feeding the LDO input. |
| Thermal Shutdown | Triggers at 165°C junction temperature, releases at 110°C - provides robust overtemperature protection without latch-up. |
| Enable Threshold | VCEH = 1.7 V min, VCEL = 0.8 V max - compatible with 1.8 V and 3.3 V GPIOs for controlled power sequencing. |
Pinout & Package
SOT-23-5 package (Case 1212), 2.9 × 2.8 × 1.15 mm body, 0.95 mm pitch, Pb-free, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply connection | Accepts 2.6–10 V; requires 1 µF ceramic decoupling placed adjacent to pin for transient immunity. |
| GND | Power ground reference | Common return path for input/output currents; must be low-impedance and tied directly to power plane. |
| CE | Chip enable control input | Active-high logic input; internal 0.3 µA pull-down allows direct tie to VIN if unused; enables system-level power gating. |
| VOUT | Regulated output | Delivers stable 1.2 V; connects to 1 µF ceramic capacitor near pin to ensure loop stability and load transient response. |
| NC | No connection | Unbonded terminal; must remain floating - no routing or soldering permitted. |
Key Features
| Feature | Design Value |
|---|---|
| Auto-discharge function | D-version integrates dedicated VOUT-to-GND discharge transistor, reducing output decay time by >10× vs. passive RC discharge. |
| Ceramic capacitor stability | Stable with ≥1 µF X5R/X7R ceramic output capacitor - eliminates need for higher-ESR tantalum or electrolytic types. |
| Low-temperature drift | ±80 ppm/°C output voltage coefficient - maintains tight regulation across industrial temperature range without calibration. |
| Current fold-back protection | Reduces short-circuit current to 40 mA at VOUT = 0 V - limits power dissipation during fault conditions. |
| High line regulation | 0.02%/V typical - minimizes output variation when input voltage shifts due to battery discharge or upstream converter ripple. |
Applications
| Portable Medical Sensors | IoT Edge Node Microcontrollers |
|---|---|
Use Scenario: Wearable ECG patch powered by coin-cell or single Li-ion battery, requiring ultra-low quiescent current and fast wake-up. IC Role / Device Role / Timing Role: Primary 1.2 V core supply for ultra-low-power MCU and analog front-end; enables sub-µA sleep mode via CE pin control. Use Value: 23 µA IQ and auto-discharge prevent residual leakage through output cap, extending shelf life and ensuring deterministic reset behavior. |
Use Scenario: Battery-operated environmental sensor node with BLE radio, cycling between deep sleep and brief active bursts. IC Role / Device Role / Timing Role: Local 1.2 V rail for MCU core and RF transceiver digital logic; CE pin synchronized with radio activity state. Use Value: 770 mV dropout allows full utilization of battery down to 2.8 V, while 70 dB PSRR isolates sensitive RF sections from noisy DC-DC switching artifacts. |
| Industrial Camera Modules | Consumer DVR Power Management |
Use Scenario: Compact HD camera module in security equipment, powered from 5 V system rail with strict EMI requirements. IC Role / Device Role / Timing Role: Clean 1.2 V supply for image signal processor (ISP) core; placed after main 5 V → 3.3 V DC-DC stage. Use Value: Low-noise 85 µVRMS output and 70 dB PSRR prevent clock jitter and image artifacts caused by power supply noise. |
Use Scenario: Portable digital video recorder using dual Li-ion cells (up to 8.4 V), requiring regulated 1.2 V for SoC memory interface. IC Role / Device Role / Timing Role: Point-of-load regulator for DDR I/O or LPDDR core voltage; handles dynamic load steps up to 300 mA. Use Value: Fast load transient response (Fig. 29–34) and 200 mV dropout at 100 mA maintain voltage within ±3% during memory access bursts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1202E/TT | 250 mA max, 6 µA IQ, no CE pin, no auto-discharge, SOT-23-3 | Lacks enable control and output discharge; limited to simpler always-on rails | Select when lowest quiescent current is critical and sequencing/discharge not required. |
| Torex XC6206P122MR-G | 300 mA, 1.2 V, 12 µA IQ, CE pin, no auto-discharge, SOT-23-5 | Same pinout but lacks D-version discharge transistor; lower IQ but no rapid VOUT decay | Choose for cost-sensitive designs where controlled shutdown timing is not needed. |
Availability
NCP4625DSN12T1G is available at Aetrix Electronics and suitable for portable medical sensors, IoT edge nodes, industrial camera modules, and consumer DVR power management requiring stable component supply and long-term manufacturability.
Supply support for NCP4625DSN12T1G 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 NCP4625DSN12T1G belongs to onsemi's NCP4625 family of low-IQ, auto-discharge LDOs designed specifically for battery-powered portable electronics requiring precise voltage regulation, fast enable/disable control, and minimal board area.
FAQ
What is the maximum input voltage rating for the NCP4625DSN12T1G?
The NCP4625DSN12T1G has an absolute maximum input voltage rating of 12.0 V. However, the recommended operating input voltage range is 2.6 V to 10 V per the datasheet's Electrical Characteristics table. Exceeding 10 V may degrade long-term reliability even if below the 12 V absolute limit, and operation above 10 V is not characterized or guaranteed.
Does the NCP4625DSN12T1G require an external capacitor on the CE pin for noise immunity?
No, the NCP4625DSN12T1G does not require an external capacitor on the CE pin. Its CE input features built-in hysteresis and is specified to operate reliably with clean logic-level signals. Adding capacitance may slow enable/disable timing and is unnecessary unless system-level EMI testing reveals susceptibility - in which case a small 100 pF ceramic capacitor close to the pin may be added.
How does the auto-discharge function in the NCP4625DSN12T1G operate during shutdown?
When the CE pin is driven low, the NCP4625DSN12T1G activates an internal NMOS transistor between VOUT and GND, discharging the output capacitor rapidly. This function is exclusive to the "D" version (e.g., NCP4625DSN12T1G) and reduces VOUT decay time significantly compared to passive discharge - critical for systems requiring strict power-down sequencing or avoiding back-powering of upstream circuitry.
Can the NCP4625DSN12T1G be used with a 2.2 µF ceramic output capacitor instead of the recommended 1 µF?
Yes, the NCP4625DSN12T1G remains stable with a 2.2 µF ceramic output capacitor. The datasheet specifies stability with ≥1 µF X5R/X7R ceramics; increasing capacitance improves load transient response and reduces output ripple, provided ESR stays below 100 mΩ. No compensation changes are needed.
What is the thermal resistance (RJA) of the NCP4625DSN12T1G in its SOT-23-5 package?
The NCP4625DSN12T1G in SOT-23-5 (Case 1212) has a junction-to-air thermal resistance (RJA) of 238°C/W, as specified in the Thermal Characteristics table on page 3 of the datasheet. This value assumes standard JEDEC test board conditions (2s2p copper layers); actual RJA improves with enhanced PCB copper pour and thermal vias.
NCP4625DSN12T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 10V
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.8V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 40 µA
- Current - Supply (Max):
- -
- PSRR:
- 70dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
NCP4625DSN12T1G FAQ
1.How can I place an order for NCP4625DSN12T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP4625DSN12T1G 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 NCP4625DSN12T1G reliable?
The price and inventory of NCP4625DSN12T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP4625DSN12T1G is usually 5 days.
3.What payment methods are accepted for NCP4625DSN12T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP4625DSN12T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP4625DSN12T1G?
NCP4625DSN12T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP4625DSN12T1G 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 NCP4625DSN12T1G?
For technical support, including NCP4625DSN12T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP4625DSN12T1G requirements.
6.How does Aetrix verify that NCP4625DSN12T1G is sourced from the original manufacturer or authorized distributors?
All NCP4625DSN12T1G 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 NCP4625DSN12T1G meets industry standards.
7.What is the process for return or replacement of NCP4625DSN12T1G?
All NCP4625DSN12T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP4625DSN12T1G, 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 NCP4625DSN12T1G part is unused and in its original packaging.
Return procedure for NCP4625DSN12T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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