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onsemi NCP4624DSQ12T1G
- Part No.:
- NCP4624DSQ12T1G
- Manufacturer:
- onsemi
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
NCP4624DSQ12T1G.pdf
- Description:
- IC REG LINEAR 1.2V 150MA SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:4,451
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Product details
Overview
NCP4624DSQ12T1G from onsemi is a 150 mA CMOS low-dropout linear voltage regulator with 1.2 V fixed output, 2.5–11 V input range, ±2% output accuracy, and integrated reverse current protection. It operates across −40°C to +85°C and supports industrial and portable battery-powered systems using 2-cell Li-ion sources.
For engineers reviewing the NCP4624DSQ12T1G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at 150 mA (max 2.59 V for 1.2 V output), quiescent current (2.0 µA typ), enable functionality (CE high-active), thermal resistance (263°C/W in SC-88A), and compatibility with 0.1 µF ceramic output capacitors.
Technical Context
The NCP4624DSQ12T1G uses a PMOS pass device with internal reverse current detection circuitry that activates when VOUT exceeds 1.5 V and VIN drops below VREV_DET (55–100 mV offset), preventing backflow via controlled parasitic diode switching. Its CE pin features an internal pull-down current source (0.3–0.9 µA) ensuring reliable disable state during floating conditions.
Designed for low-noise, low-quiescent-current operation, it delivers 105 µVRMS output noise (100 Hz–100 kHz) at 1.2 V output and achieves 27 dB PSRR at 1 kHz. The auto-discharge NMOS (D-version only) is not present in this variant - the NCP4624DSQ12T1G is the standard version without active output discharge.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2 V ±2% over −40°C to +85°C - ensures stable core or I/O rail for microcontrollers and sensors. |
| Max Input Voltage | 11 V - supports wide-input applications including 2-cell Li-ion (up to 8.4 V) with margin for transients. |
| Dropout Voltage | 2.59 V max at 150 mA - defines minimum headroom required between VIN and VOUT for regulation. |
| Quiescent Current | 2.0 µA typical - enables ultra-low-power standby mode in battery-operated equipment. |
| Line Regulation | 0.02%/V - limits output variation due to input voltage changes, critical for noisy supply environments. |
| Reverse Current Protection | Active for VOUT > 1.5 V - prevents power loss from output to input during shutdown or backup scenarios. |
| Thermal Resistance | 263°C/W (Junction-to-Air, SC-88A) - determines maximum power dissipation before thermal shutdown under still-air conditions. |
Pinout & Package
Package: SC-88A (SC-70-5/SOT-353), 5-pin surface-mount package with exposed pad (EP) - footprint compatible with space-constrained PCB layouts and supports moderate thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SC-88A) | VIN | Main input supply connection; accepts 2.5–11 V; requires 0.1 µF ceramic decoupling capacitor. |
| 2 (SC-88A) | GND | Ground reference for regulator and CE logic; must be low-impedance return path. |
| 3 (SC-88A) | CE | Chip enable input (high-active); internal 0.3–0.9 µA pull-down ensures safe default-off state. |
| 4 (SC-88A) | NC | No connect - electrically isolated; must remain unconnected per design specification. |
| 5 (SC-88A) | VOUT | Regulated 1.2 V output; requires 0.1 µF ceramic capacitor placed adjacent to pin for stability. |
| EP | Exposed Pad | Thermal pad - may be left floating or connected to GND for improved heat transfer and EMI performance. |
Key Features
| Feature | Design Value |
|---|---|
| Wide input voltage range | 2.5 V to 11 V - accommodates varied battery chemistries and unregulated DC supplies without external pre-regulation. |
| Ultra-low quiescent current | 2.0 µA typical - extends battery life in always-on or intermittent-sensing applications like IoT nodes. |
| Integrated reverse current protection | Operates autonomously above 1.5 V VOUT - eliminates need for external blocking diode and associated voltage drop. |
| High output voltage accuracy | ±2% over temperature and load - ensures reliable operation of precision analog or digital circuits without post-regulation trimming. |
| Stable with minimal output capacitance | 0.1 µF ceramic - reduces BOM count and board area versus regulators requiring ≥1 µF tantalum or electrolytic caps. |
Applications
| Industrial Sensor Node | Automotive Infotainment Display |
|---|---|
|
Use Scenario: Powering a low-power MCU, MEMS accelerometer, and BLE radio in a sealed outdoor sensor enclosure powered by two AA alkaline cells (1.8–3.2 V). IC Role / Device Role / Timing Role: Primary LDO delivering clean 1.2 V to MCU core and sensor analog front-end; CE pin synchronized to sleep/wake cycles. Use Value: 2.0 µA quiescent current minimizes self-discharge; ±2% accuracy maintains ADC reference integrity across temperature; reverse protection prevents battery drain when auxiliary 3.3 V rail is active. |
Use Scenario: Supplying 1.2 V to FPGA configuration memory and interface logic in a vehicle-mounted LCD display module with shared 5 V system rail. IC Role / Device Role / Timing Role: Secondary LDO providing isolated, low-noise 1.2 V domain; CE pin tied to main power sequencer signal. Use Value: 27 dB PSRR at 1 kHz suppresses ripple from switching DC/DC converters; 11 V max input withstands load-dump transients; SC-88A package fits tight layout constraints near display connector. |
| Portable Medical Monitor | Home Appliance Control Board |
|
Use Scenario: Regulating power for a low-power ARM Cortex-M0+ processor and pulse oximeter analog subsystem in a handheld patient monitor running on rechargeable Li-ion (3.0–4.2 V). IC Role / Device Role / Timing Role: Core voltage regulator enabling deep-sleep modes; reverse current protection prevents backfeed into discharged battery during USB charging. Use Value: Dropout voltage ≤2.59 V allows full 1.2 V regulation down to ~3.8 V battery voltage; −40°C to +85°C rating covers clinical and transport environments; 105 µVRMS noise avoids interference with sensitive analog measurements. |
Use Scenario: Providing 1.2 V bias to smart appliance MCU and touch controller in a washing machine control panel with 12 V DC input derived from mains transformer. IC Role / Device Role / Timing Role: Local point-of-load regulator decoupling MCU core from noisy motor drive supply; CE pin used for firmware-controlled power gating. Use Value: 263°C/W thermal resistance enables operation without heatsink at ambient ≤60°C; 0.1 µF output cap simplifies layout near MCU; RoHS/Pb-free compliance meets global appliance safety standards. |
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 | 150 mA, 1.2 V fixed, 6 V max input, 1.6 µA IQ, no reverse current protection | Lacks reverse current blocking - requires external diode in bidirectional power domains | Prefer where ultra-low IQ dominates and reverse flow is not possible or externally managed |
| Torex XC6206P122MR-G | 150 mA, 1.2 V fixed, 6 V max input, 1 µA IQ, no CE pin or reverse protection | No enable control or reverse current protection - unsuitable for sequenced or backup-aware systems | Choose only for simplest always-on applications with single-supply topology and strict IQ budget |
Compared with MCP1700T-1202E/TT and XC6206P122MR-G, the NCP4624DSQ12T1G uniquely combines 11 V input tolerance, integrated reverse current protection, and high-accuracy 1.2 V output - making it the only option among the three suitable for 2-cell Li-ion systems with dynamic power routing or backup paths.
Availability
NCP4624DSQ12T1G is available at Aetrix Electronics and suitable for industrial sensor nodes, automotive infotainment displays, portable medical monitors, home appliance control boards, and battery-powered communication equipment requiring stable component supply and long-term manufacturability.
Supply support for NCP4624DSQ12T1G 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 NCP4624DSQ12T1G belongs to onsemi's high-voltage, low-IQ LDO family designed specifically for battery-powered and wide-input industrial systems where reverse current blocking and extended temperature operation are essential.
FAQ
What is the maximum input voltage rating for the NCP4624DSQ12T1G?
The NCP4624DSQ12T1G has an absolute maximum input voltage rating of 12 V, with recommended continuous operation up to 11 V. This allows safe use with 2-cell Li-ion batteries (up to 8.4 V fully charged) plus margin for line transients. Exceeding 11 V continuously risks exceeding thermal limits or violating safe operating area, especially at high load currents.
Does the NCP4624DSQ12T1G include reverse current protection, and how does it function?
Yes, the NCP4624DSQ12T1G integrates reverse current protection that activates when VOUT exceeds 1.5 V and VIN falls below the detection threshold (55–100 mV above VOUT). It internally switches the PMOS pass device's parasitic diode orientation to block conduction from VOUT to VIN or GND. This eliminates the need for an external Schottky diode and prevents battery drain in multi-rail systems.
Can the NCP4624DSQ12T1G operate with a 0.1 µF output capacitor, and why is this significant?
Yes, the NCP4624DSQ12T1G is stable with a minimum 0.1 µF ceramic output capacitor - confirmed in the datasheet's application information and ESR vs. load current charts. This reduces bill-of-materials cost and PCB area versus regulators requiring ≥1 µF tantalum or aluminum electrolytic capacitors, while maintaining transient response and loop stability across temperature and load conditions.
What is the thermal resistance (RJA) of the NCP4624DSQ12T1G in its SC-88A package?
The NCP4624DSQ12T1G in SC-88A package has a junction-to-air thermal resistance (RJA) of 263°C/W under standard JEDEC test conditions. This value assumes no copper pour or thermal vias; adding a 100 mm² GND-connected copper area beneath the exposed pad can reduce RJA by ~30–40°C/W in typical layouts, enabling higher continuous output current at elevated ambient temperatures.
Is the NCP4624DSQ12T1G pin-compatible with other variants in the NCP4624 family?
Yes, all NCP4624 variants - including SOT-23-5, UDFN4, and SC-88A packages - share identical pin numbering and function mapping per the datasheet's PIN FUNCTION DESCRIPTION table. The NCP4624DSQ12T1G (SC-88A) uses pins 1–5 for VIN, GND, CE, NC, and VOUT respectively, matching the same signal assignment as NCP4624DSN12T1G (SOT-23-5) and NCP4624DMU12TCG (UDFN4), enabling direct package substitution in layout-constrained designs.
NCP4624DSQ12T1G 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):
- 11V
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 2.59V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 3.7 µA
- Current - Supply (Max):
- -
- PSRR:
- 27dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Reverse Polarity
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-88A (SC-70-5/SOT-353)
NCP4624DSQ12T1G FAQ
1.How can I place an order for NCP4624DSQ12T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP4624DSQ12T1G 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 NCP4624DSQ12T1G reliable?
The price and inventory of NCP4624DSQ12T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP4624DSQ12T1G is usually 5 days.
3.What payment methods are accepted for NCP4624DSQ12T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP4624DSQ12T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP4624DSQ12T1G?
NCP4624DSQ12T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP4624DSQ12T1G 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 NCP4624DSQ12T1G?
For technical support, including NCP4624DSQ12T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP4624DSQ12T1G requirements.
6.How does Aetrix verify that NCP4624DSQ12T1G is sourced from the original manufacturer or authorized distributors?
All NCP4624DSQ12T1G 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 NCP4624DSQ12T1G meets industry standards.
7.What is the process for return or replacement of NCP4624DSQ12T1G?
All NCP4624DSQ12T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP4624DSQ12T1G, 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 NCP4624DSQ12T1G part is unused and in its original packaging.
Return procedure for NCP4624DSQ12T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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