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onsemi NCP4620HSQ18T1G
- Part No.:
- NCP4620HSQ18T1G
- Manufacturer:
- onsemi
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
NCP4620HSQ18T1G.pdf
- Description:
- IC REG LINEAR 1.8V 150MA SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:3,103
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Product details
Overview
NCP4620HSQ18T1G from onsemi is a 150 mA, 1.8 V fixed-output CMOS low-dropout linear regulator in SC-70-5 package. It operates from 2.6 V to 10 V input, delivers ±1.0% output voltage accuracy over −40°C to +85°C, and features chip enable (active-high), thermal shutdown, and current fold-back protection. It powers low-voltage logic rails in portable battery-powered devices.
For engineers reviewing the NCP4620HSQ18T1G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at 150 mA (400 mV @ 2.8 V out), PSRR (70 dB @ 1 kHz), stability with ceramic capacitors, and SC-70 footprint compatibility for space-constrained designs.
Technical Context
The NCP4620HSQ18T1G integrates a precision bandgap reference, error amplifier, and NMOS pass transistor in a CMOS architecture optimized for low quiescent current (23 µA typical) and fast transient response. Its active-high CE pin enables system-level power sequencing without external logic.
It uses internal current fold-back and thermal shutdown (trip at 165°C, release at 110°C) to protect against overload and overheating. The device is stable with ≥0.47 µF ceramic output capacitance and requires no ESR tuning-eliminating need for tantalum or aluminum electrolytic capacitors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±1.0% over −40°C to +85°C - ensures reliable core voltage for 1.8 V I/O and logic circuits |
| Max Output Current | 150 mA - sufficient for powering microcontrollers, sensors, and interface ICs in compact systems |
| Dropout Voltage | 400 mV @ IOUT = 150 mA, VOUT = 2.8 V - enables operation from single Li-ion cell (min ~3.0 V under load) |
| Quiescent Current | 23 µA typical - minimizes standby power loss in always-on subsystems |
| PSRR | 70 dB @ 1 kHz - suppresses switching noise from upstream DC-DC converters feeding the LDO |
| Line Regulation | 0.02%/V typical - maintains tight output regulation across wide input voltage swings |
| Thermal Shutdown | 165°C trip temperature - prevents permanent damage during sustained overload or poor PCB thermal design |
Pinout & Package
Package: SC-70-5 (Case 419A−02), 5-pin surface-mount, 2.2 mm × 1.35 mm × 1.1 mm body height. Optimized for high-density PCB layouts with minimal board area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply connection | Accepts 2.6–10 V; must be decoupled with ≥1 µF ceramic capacitor placed adjacent to pin |
| GND | Ground reference | Common return path for input/output currents; connects to low-impedance ground plane |
| CE | Chip Enable (active-high) | Drives regulator ON when ≥1.7 V applied; internal pull-down allows direct tie-to-VIN if unused |
| VOUT | Regulated output | Delivers stable 1.8 V; requires ≥0.47 µF ceramic capacitor directly at pin for stability |
| NC | No connection | Internally unconnected; must remain floating - no routing or soldering permitted |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout voltage | 400 mV @ 150 mA enables use with single-cell Li-ion (≥3.0 V) or dual-cell alkaline inputs |
| Ceramic capacitor stability | Stable with ≥0.47 µF X5R/X7R ceramics - eliminates ESR dependency and reduces BOM cost/size |
| Active-high enable control | CE threshold of 1.7 V (min) supports direct interfacing with 1.8 V/3.3 V GPIO without level shifters |
| Thermal and current protection | Integrated thermal shutdown (165°C) and fold-back current limiting prevent damage during fault conditions |
| Pb-free and RoHS compliant | Meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL1) - suitable for standard reflow assembly |
Applications
| Portable Medical Sensors | IoT Edge Node Power |
|---|---|
Use Scenario: Powering ultra-low-power BLE sensor nodes with 1.8 V ADCs, digital accelerometers, and RF transceivers from coin-cell or Li-ion sources. IC Role / Device Role / Timing Role: Primary 1.8 V rail regulator providing clean, low-noise supply for analog front-end and digital logic. Use Value: 23 µA quiescent current extends battery life; 70 dB PSRR isolates sensitive analog circuitry from digital switching noise. | Use Scenario: Supplying 1.8 V core voltage to microcontrollers (e.g., ARM Cortex-M0+) and memory in compact industrial IoT gateways. IC Role / Device Role / Timing Role: Local point-of-load regulator delivering stable voltage despite input ripple from shared DC-DC bus. Use Value: 400 mV dropout allows operation down to 2.2 V input - critical for brown-out resilience during battery discharge. |
| Wearable Display Backlight Drivers | USB-Powered Audio Accessories |
Use Scenario: Biasing 1.8 V logic interfaces and timing controllers in OLED/LCD modules within smartwatches and fitness bands. IC Role / Device Role / Timing Role: Secondary regulated rail enabling precise I²C/SPI communication between host MCU and display driver ICs. Use Value: ±1.0% output accuracy ensures consistent timing margins; SC-70 package fits tight bezel constraints. | Use Scenario: Regulating USB 5 V down to 1.8 V for DACs, headphone amplifiers, and USB audio controller ICs in portable DAC/headphone amps. IC Role / Device Role / Timing Role: Low-noise post-regulator cleaning USB-derived power before analog signal paths. Use Value: 90 µVRMS output noise (10 Hz–100 kHz) preserves SNR in high-fidelity audio stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1802E/TT | 100 mA max output, 6 µA quiescent current, SOT-23-3 package (no CE pin) | Lacks enable control and higher current capability - suitable only for simpler always-on 1.8 V rails | Select when ultra-low IQ dominates over programmability and output current headroom |
| TCS2117-1800MV | 200 mA max output, 45 µA IQ, SC-70-5 package, but ±2.0% output tolerance | Higher current and same footprint, but looser accuracy impacts timing-critical logic rails | Select when higher load current is required and ±2.0% VOUT is acceptable for target logic family |
Compared with MCP1700T-1802E/TT and TCS2117-1800MV, the NCP4620HSQ18T1G uniquely balances 150 mA drive, ±1.0% accuracy, active-high CE, and SC-70 packaging - making it optimal for space-constrained, battery-powered systems requiring both precision and controllability.
Availability
NCP4620HSQ18T1G is available at Aetrix Electronics and suitable for portable medical sensors, IoT edge nodes, wearable displays, and USB-powered audio accessories requiring stable component supply and long-term manufacturability.
Supply support for NCP4620HSQ18T1G 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 technologies for automotive, industrial, cloud, and intelligent power systems.
The NCP4620HSQ18T1G belongs to the NCP4620 series of low-IQ, CMOS-based LDO regulators designed specifically for battery-powered portable electronics demanding high accuracy, small footprint, and robust protection features.
FAQ
What is the maximum input voltage rating for the NCP4620HSQ18T1G?
The NCP4620HSQ18T1G has an absolute maximum input voltage rating of 12.0 V, but its recommended operating input range is 2.6 V to 10.0 V. Exceeding 12.0 V may cause permanent damage. For reliable operation with margin, keep VIN ≤ 10 V per datasheet specifications - especially important when used with unregulated sources like battery packs or DC-DC outputs.
Does the NCP4620HSQ18T1G require an external capacitor on the CE pin?
No, the NCP4620HSQ18T1G does not require an external capacitor on the CE pin. Its CE input has an internal pull-down current source (0.3 µA typical), allowing direct connection to VIN for always-on operation or to a GPIO for controlled enable/disable. Adding capacitance to CE would slow turn-on/turn-off timing and is unnecessary unless intentional soft-start behavior is needed - which is not supported by this device's architecture.
Can the NCP4620HSQ18T1G be used with a 1 µF ceramic output capacitor?
Yes, the NCP4620HSQ18T1G is explicitly characterized and guaranteed stable with a 1 µF ceramic output capacitor (X5R/X7R), as confirmed in the Application Information section. The datasheet states that ≥0.47 µF is sufficient, and 1 µF improves transient response and PSRR. Using larger values (e.g., 2.2 µF) further enhances load step immunity without compromising stability - no ESR requirements or damping resistors are needed.
What is the thermal resistance (RJA) of the NCP4620HSQ18T1G in its SC-70 package?
The NCP4620HSQ18T1G in SC-70 package has a thermal resistance RJA of 263°C/W, measured under standard JEDEC test conditions (1s² copper pad, no airflow). This value assumes minimal PCB copper; actual performance improves significantly with ≥1 in² of 2-oz copper connected to the GND pin. At 150 mA and 10 V input, worst-case power dissipation is ~1.23 W, implying ~323°C junction rise above ambient - confirming necessity of proper thermal layout or derating above 85°C ambient.
Is the NCP4620HSQ18T1G pin-compatible with other variants in the NCP4620 family?
Yes, all SC-70 packaged NCP4620 variants - including NCP4620HSQ12T1G, NCP4620HSQ15T1G, NCP4620HSQ18T1G, NCP4620HSQ25T1G, and NCP4620DSQ18T1G - share identical SC-70-5 pinout and mechanical footprint. The only functional difference between H (standard) and D (auto-discharge) versions is the presence of an internal VOUT-to-GND discharge transistor in the D variant - irrelevant for most 1.8 V logic applications where rapid output decay is not required.
NCP4620HSQ18T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- 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):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.8V @ 150mA
- Current - Output:
- 150mA
- 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:
- SC-88A (SC-70-5/SOT-353)
NCP4620HSQ18T1G FAQ
1.How can I place an order for NCP4620HSQ18T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP4620HSQ18T1G 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 NCP4620HSQ18T1G reliable?
The price and inventory of NCP4620HSQ18T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP4620HSQ18T1G is usually 5 days.
3.What payment methods are accepted for NCP4620HSQ18T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP4620HSQ18T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP4620HSQ18T1G?
NCP4620HSQ18T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP4620HSQ18T1G 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 NCP4620HSQ18T1G?
For technical support, including NCP4620HSQ18T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP4620HSQ18T1G requirements.
6.How does Aetrix verify that NCP4620HSQ18T1G is sourced from the original manufacturer or authorized distributors?
All NCP4620HSQ18T1G 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 NCP4620HSQ18T1G meets industry standards.
7.What is the process for return or replacement of NCP4620HSQ18T1G?
All NCP4620HSQ18T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP4620HSQ18T1G, 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 NCP4620HSQ18T1G part is unused and in its original packaging.
Return procedure for NCP4620HSQ18T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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