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onsemi NCP612SQ25T1
- Part No.:
- NCP612SQ25T1
- Manufacturer:
- onsemi
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
NCP612SQ25T1.pdf
- Description:
- IC REG LINEAR 2.5V 100MA SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:3,847
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Product details
Overview
NCP612SQ25T1 from onsemi is a fixed-output 2.5 V CMOS low-quiescent-current linear voltage regulator in SC70−5 package, featuring 40 µA typical quiescent current, 230 mV dropout at 100 mA, and ±2.0% output voltage accuracy over −40°C to +85°C - designed for battery-powered portable electronics requiring stable low-power supply regulation.
For engineers reviewing the NCP612SQ25T1 datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low IQ, SC70−5 footprint compatibility, enable-controlled standby mode, ceramic capacitor stability, and thermal-limited 100 mA output capability in handheld instrumentation and consumer devices.
Technical Context
The NCP612SQ25T1 integrates a PMOS pass transistor, precision voltage reference, error amplifier, and protection circuits (current limit, thermal shutdown) in a single die. It operates as a low-dropout linear regulator with no external compensation required and supports ceramic output capacitors down to 1.0 µF.
Its enable input provides logic-level control (VTH(HI) = 0.95 V, VTH(LO) = 0.3 V), allowing system-level power sequencing. Dropout voltage remains ≤270 mV across −40°C to +85°C at 100 mA load, and ground current stays ≤90 µA under full load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5 V ±2.0% at 10 mA, −40°C to +85°C - ensures stable core/sensor rail in portable systems. |
| Quiescent Current | 40 µA typical (IOUT = 1 mA–100 mA) - extends battery life in always-on or low-duty-cycle applications. |
| Dropout Voltage | 230 mV max at 100 mA and 2.5 V output - enables operation from single-cell Li-ion (3.0 V min) or 2xAA (3.2 V). |
| Enable Threshold | VEN(HI) = 0.95 V, VEN(LO) = 0.3 V - compatible with 1.8 V/3.3 V GPIO without level-shifting. |
| Thermal Protection | Internal shutdown at ~160°C - prevents damage during transient overload or poor PCB thermal design. |
| Output Noise | 100 µVRMS (100 Hz–100 kHz, 30 mA load) - suitable for noise-sensitive analog/RF subsystems. |
| Stability | Stable with 1.0 µF ceramic output capacitor - eliminates need for high-ESR tantalum or complex compensation. |
Pinout & Package
Package: SC70−5 (Case 419A−02), micro-miniature surface-mount, 1.80 × 1.35 mm footprint, 0.65 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vin | Positive input supply - must be ≥ (2.5 V + dropout) and ≤6.0 V; requires local 1.0 µF decoupling. |
| 2 | Gnd | Power ground reference - low-impedance connection critical for noise rejection and thermal performance. |
| 3 | Enable | Active-high digital control - pull to Vin to enable, to GND to disable (standby IQ ≤0.03 µA). |
| 4 | N/C | No internal connection - must remain unconnected; not usable as thermal pad or auxiliary terminal. |
| 5 | Vout | Regulated 2.5 V output - connects to load and 1.0 µF ceramic capacitor; trace length minimized for transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40 µA typical under load - enables >1-year battery life in coin-cell–powered IoT sensors. |
| Low dropout architecture | 230 mV @ 100 mA - supports higher efficiency than standard LDOs when input margin is tight. |
| Enable-controlled shutdown | Reduces IQ to ≤0.03 µA - allows host MCU to gate power to peripherals without external switches. |
| Ceramic capacitor compatibility | Stable with 1.0 µF, low-ESR ceramics - eliminates cost/size penalty of tantalum and simplifies BOM. |
| Integrated thermal protection | Auto-shutdown at ~160°C - avoids external thermal monitoring circuitry in space-constrained designs. |
Applications
| Portable Medical Sensors | Wireless Remote Controls |
|---|---|
|
Use Scenario: Battery-powered pulse oximeter with optical front-end and BLE radio. IC Role / Device Role / Timing Role: Primary 2.5 V supply for analog signal chain and ADC reference. Use Value: 40 µA IQ and 100 µVRMS noise ensure >2-year CR2032 life and <1 LSB noise floor in 12-bit measurements. |
Use Scenario: Sub-GHz RF remote with wake-on-button and periodic transmission. IC Role / Device Role / Timing Role: Always-on 2.5 V rail for MCU RTC and RF transceiver standby mode. Use Value: Enable pin allows MCU to fully disable NCP612SQ25T1 between transmissions, reducing average IQ to <1 µA. |
| Handheld Test Meters | Smart Home Motion Sensors |
|
Use Scenario: Pocket-sized multimeter with LCD, op-amp front-end, and auto-ranging. IC Role / Device Role / Timing Role: Precision 2.5 V reference and analog supply for measurement circuitry. Use Value: ±2.0% output accuracy and <100 ppm/°C tempco maintain calibration integrity across −10°C to +50°C operating range. |
Use Scenario: PIR-based occupancy sensor powered by two AA alkalines. IC Role / Device Role / Timing Role: Main 2.5 V supply for PIR signal conditioning, MCU, and Zigbee module. Use Value: 230 mV dropout enables >500-hour runtime from 3.0 V fresh batteries, even after voltage sag to 2.7 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-IQ LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-2502E/MB | 250 mA output, 1.6 µA quiescent current, SOT-23-3 (no enable pin) | Lacks enable control; higher IOUT but larger package and lower PSRR | Choose when ultra-low IQ dominates and enable functionality is unnecessary. |
| TCS2115-2.5V | 150 mA output, 50 µA IQ, SC70-5, integrated thermal foldback (not shutdown) | Slightly higher dropout (300 mV @ 100 mA); no NCV automotive variant | Prefer when continuous safe-operation under overload is prioritized over hard shutdown. |
Compared with MCP1700T-2502E/MB and TCS2115-2.5V, the NCP612SQ25T1 uniquely balances SC70−5 size, 40 µA IQ, enable control, and thermal shutdown - making it optimal for compact, battery-gated, safety-aware portable systems where layout area and standby power are constrained.
Availability
NCP612SQ25T1 is available at Aetrix Electronics and suitable for portable medical sensors, wireless remotes, handheld test meters, and smart home motion sensors requiring stable component supply with consistent SC70−5 packaging and Pb-free compliance.
Supply support for NCP612SQ25T1 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, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The NCP612SQ25T1 belongs to onsemi's NCP612 series of ultra-low-IQ linear regulators, engineered specifically for battery-powered handheld equipment where minimal standby current and small footprint are critical design constraints.
FAQ
What is the maximum input voltage rating for the NCP612SQ25T1?
The NCP612SQ25T1 has an absolute maximum input voltage of 6.0 V. Operation above this risks permanent damage. For reliable 2.5 V regulation, input must exceed 2.73 V (2.5 V + 230 mV dropout) and remain within 6.0 V - ideal for single-cell Li-ion (3.0–4.2 V) or dual-alkaline (3.0–3.2 V) sources. Exceeding 6.0 V violates Absolute Maximum Ratings and voids reliability guarantees.
Does the NCP612SQ25T1 require an external capacitor on the enable pin?
No, the NCP612SQ25T1 does not require an external capacitor on the enable pin. The enable input is a CMOS-compatible digital control node with negligible input current (<100 nA). It may be driven directly from a microcontroller GPIO or pulled to Vin/GND via a resistor; adding capacitance would only slow turn-on/off timing and is unnecessary for noise immunity in typical PCB layouts.
Can the NCP612SQ25T1 be used with a 0.47 µF output capacitor?
No - the NCP612SQ25T1 requires a minimum 1.0 µF ceramic output capacitor for guaranteed stability per the datasheet. Using 0.47 µF may cause oscillation or poor transient response, especially under load steps. The device is characterized and specified only for ≥1.0 µF; derating below this invalidates stability assurances and risks output rail collapse during dynamic loads.
What is the thermal resistance (RJA) of the NCP612SQ25T1 in standard JEDEC PCB layout?
The NCP612SQ25T1 has a specified thermal resistance of 300°C/W (Junction-to-Ambient) under standard JEDEC 2S2P test conditions. This value assumes minimal copper pour; actual RJA improves significantly with added thermal vias and PCB copper area. At 100 mA load and 6.0 V input, power dissipation reaches ~350 mW - exceeding the 330 mW limit at 25°C ambient unless board-level thermal design reduces effective RJA.
Is the NCP612SQ25T1 pin-compatible with the NCV612SQ25T1?
Yes - the NCP612SQ25T1 and NCV612SQ25T1 share identical SC70−5 pinout, electrical specifications, and marking layout (LHQ). The sole difference is temperature grade: NCP612SQ25T1 is rated for −40°C to +85°C, while NCV612SQ25T1 extends to +125°C and carries automotive qualification. Both are drop-in replacements in non-automotive designs, but NCV612SQ25T1 is required for under-hood or industrial high-temp environments.
NCP612SQ25T1 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):
- 6V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.38V @ 100mA
- Current - Output:
- 100mA
- Current - Quiescent (Iq):
- 90 µA
- Current - Supply (Max):
- 90 µA
- PSRR:
- -
- 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)
NCP612SQ25T1 FAQ
1.How can I place an order for NCP612SQ25T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP612SQ25T1 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 NCP612SQ25T1 reliable?
The price and inventory of NCP612SQ25T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP612SQ25T1 is usually 5 days.
3.What payment methods are accepted for NCP612SQ25T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP612SQ25T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP612SQ25T1?
NCP612SQ25T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP612SQ25T1 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 NCP612SQ25T1?
For technical support, including NCP612SQ25T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP612SQ25T1 requirements.
6.How does Aetrix verify that NCP612SQ25T1 is sourced from the original manufacturer or authorized distributors?
All NCP612SQ25T1 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 NCP612SQ25T1 meets industry standards.
7.What is the process for return or replacement of NCP612SQ25T1?
All NCP612SQ25T1 units undergo pre-shipment inspection (PSI). If there is an issue with NCP612SQ25T1, 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 NCP612SQ25T1 part is unused and in its original packaging.
Return procedure for NCP612SQ25T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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