My Inquiry
My Account
onsemi NCP612SQ27T1
- Part No.:
- NCP612SQ27T1
- Manufacturer:
- onsemi
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
NCP612SQ27T1.pdf
- Description:
- IC REG LINEAR 2.7V 100MA SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:4,286
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
NCP612SQ27T1 from onsemi is a fixed-output 2.7 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 rail generation.
For engineers reviewing the NCP612SQ27T1 datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low IQ, SC70-5 footprint compatibility, enable-controlled standby mode, and ceramic-capacitor stability without ESR constraints.
Technical Context
The NCP612SQ27T1 integrates a PMOS pass transistor with internal voltage reference, error amplifier, and thermal/overcurrent protection - enabling low-dropout regulation without external compensation. Its enable input supports logic-level control (VTH(HI) = 0.95 V, VTH(LO) = 0.3 V) for system power sequencing.
Designed for handheld communication equipment, it operates from 0–6.0 V input, delivers up to 100 mA output, and maintains regulation down to 2.7 V output with only 1.0 µF input/output ceramic capacitors - eliminating need for tantalum or high-ESR components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.7 V ±2.0% at 10 mA, −40°C to +85°C - ensures stable bias for low-voltage microcontrollers and sensors. |
| Quiescent Current | 40 µA typical (IOUT = 1–100 mA) - extends battery life in always-on or sleep-mode applications. |
| Dropout Voltage | 230 mV at 100 mA and 2.7 V output - enables operation from single-cell Li-ion (3.0 V min) or two-cell alkaline (3.2 V min). |
| 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 junction temperature - prevents damage during transient overload or poor PCB thermal design. |
| Input Voltage Range | 0 to 6.0 V - supports wide-input battery chemistries and unregulated DC sources. |
| Output Noise | 100 µVRMS (100 Hz–100 kHz, 30 mA load) - suitable for noise-sensitive analog circuitry like ADC references. |
Pinout & Package
Package: SC70-5 (Case 419A-02), surface-mount, 1.80 × 1.35 mm footprint with 0.65 mm lead pitch - optimized for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vin | Positive input supply - must be decoupled with ≥1.0 µF ceramic capacitor placed adjacent to pin. |
| 2 | Gnd | Power ground reference - requires low-impedance PCB trace to minimize noise coupling and dropout variation. |
| 3 | Enable | Active-high digital control - pulls low to disable regulator (IQ drops to ≤0.03 µA); connect to Vin if unused. |
| 4 | N/C | No internal connection - must remain unconnected; no routing or soldering required. |
| 5 | Vout | Regulated 2.7 V output - supports ≥1.0 µF ceramic output capacitor; ESR from 0 to 5 Ω accepted. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40 µA typical enables >1-year battery life in 10 µA average-load IoT sensors. |
| Ceramic-capacitor compatibility | No minimum ESR requirement allows use of low-cost, small-footprint X5R/X7R MLCCs without instability risk. |
| Low dropout architecture | PMOS pass element eliminates body diode conduction - prevents reverse current flow during input collapse. |
| Integrated protection | Thermal shutdown and current limit prevent latch-up or destruction under short-circuit or overtemperature conditions. |
| Pb-free packaging | RoHS-compliant SC70-5 package (NCP612SQ27T1G variant available) meets global environmental compliance requirements. |
Applications
| Cellular Phone Power Management | Portable Medical Sensor Module |
|---|---|
|
Use Scenario: Supplying 2.7 V bias to baseband processor I/O and RF front-end ICs during deep-sleep mode. IC Role / Device Role / Timing Role: Low-noise, enable-controlled LDO providing clean, sequenced power rail independent of main PMIC. Use Value: 40 µA IQ reduces standby current by >5× versus standard LDOs, extending talk-time and standby duration. |
Use Scenario: Regulating power for ultra-low-power pulse oximeter analog front-end and BLE SoC. IC Role / Device Role / Timing Role: Primary 2.7 V supply enabling sub-100 µA system sleep current while maintaining sensor readiness. Use Value: 230 mV dropout allows direct regulation from partially discharged coin-cell batteries (2.9 V), maximizing usable capacity. |
| Handheld Test Instrument | Digital Camera Image Sensor Bias |
|
Use Scenario: Powering precision ADC reference and op-amp signal chain in battery-operated multimeter. IC Role / Device Role / Timing Role: Low-noise, high-PSRR LDO delivering stable 2.7 V reference rail unaffected by input ripple or load transients. Use Value: 100 µVRMS output noise and 70 dB ripple rejection at 100 Hz ensure <1 LSB error in 16-bit measurement systems. |
Use Scenario: Providing regulated 2.7 V to CMOS image sensor analog core and timing controller in compact camcorder. IC Role / Device Role / Timing Role: Compact-area LDO integrated into sensor module PCB with minimal decoupling capacitance. Use Value: SC70-5 footprint (1.8 × 1.35 mm) saves >40% board area versus SOT-23 alternatives while supporting 100 mA peak sensor burst current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-IQ LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-2702E/MB | 250 mV dropout at 250 mA; 1.6 µA quiescent current; SOT-23-3 package (no enable pin). | Lacks enable control and has higher dropout - unsuitable for tight input-margin or sequenced-power systems. | Select only when enable functionality is unnecessary and input headroom exceeds 300 mV. |
| Torex XC6206P272MR-G | 150 mV dropout at 100 mA; 1 µA IQ; SOT-25 package with enable; ±2% accuracy. | Lower dropout and IQ, but rated only to +85°C ambient (vs. NCP612SQ27T1's full −40°C to +85°C range). | Prefer for ultra-low-power designs where ambient temperature stays below 70°C and layout allows SOT-25. |
Compared with MCP1700T-2702E/MB and XC6206P272MR-G, the NCP612SQ27T1 uniquely balances ultra-low IQ, enable control, SC70-5 miniaturization, and guaranteed performance across industrial temperature range - making it optimal for space- and battery-limited portable systems requiring robust sequencing.
Availability
NCP612SQ27T1 is available at Aetrix Electronics and suitable for cellular phones, portable medical sensors, handheld test instruments, and digital camera modules requiring stable component supply with consistent parametric performance and long-term manufacturability.
Supply support for NCP612SQ27T1 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 NCP612SQ27T1 belongs to onsemi's NCP612 series of ultra-low-IQ LDOs - engineered specifically for battery-powered portable electronics where extended runtime, small form factor, and ceramic-capacitor simplicity are critical design requirements.
FAQ
What is the maximum output current capability of the NCP612SQ27T1?
The NCP612SQ27T1 delivers up to 100 mA continuous output current while maintaining regulation and specified accuracy. At 100 mA load, its dropout voltage is 230 mV (typical) at 2.7 V output. The device includes internal current limiting that caps short-circuit output at 150 mA for 1.5–3.9 V output variants, ensuring safe operation during fault conditions. Derating applies above +85°C ambient.
Does the NCP612SQ27T1 require external compensation components?
No, the NCP612SQ27T1 is internally compensated and stable with 1.0 µF ceramic input and output capacitors - no external resistors, capacitors, or ESR tuning required. Its design accepts output capacitors with ESR ranging from near-zero to 5.0 Ω, simplifying BOM and layout for space-constrained applications such as wearables and hearing aids.
Can the NCP612SQ27T1 operate with an input voltage lower than 2.7 V?
No - the NCP612SQ27T1 requires input voltage ≥ (VOUT + dropout). With 2.7 V nominal output and 230 mV typical dropout at 100 mA, minimum functional input is ~2.93 V. Below this, regulation fails and VOUT drops linearly with VIN. Absolute maximum input is 6.0 V; operation below 0 V is prohibited per absolute ratings.
What is the function of Pin 4 (N/C) on the NCP612SQ27T1 SC70-5 package?
Pin 4 of the NCP612SQ27T1 is designated N/C (No Connection) - it has no internal bond wire or circuit connection. This pin must remain unconnected on the PCB; neither routing nor soldering is permitted. Leaving it floating poses no functional or reliability risk, and it does not affect thermal or electrical performance.
How does the enable pin (Pin 3) behave during power-up and power-down sequences?
The NCP612SQ27T1 enable pin is active-high with logic thresholds of VEN(HI) = 0.95 V (turn-on) and VEN(LO) = 0.3 V (turn-off). During power-up, VOUT rises only after VEN exceeds 0.95 V; during power-down, VOUT discharges through the load once VEN falls below 0.3 V. If unused, Pin 3 must be tied directly to Vin - not pulled up via resistor - to guarantee reliable activation.
NCP612SQ27T1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 2.7V
- 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)
NCP612SQ27T1 FAQ
1.How can I place an order for NCP612SQ27T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP612SQ27T1 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 NCP612SQ27T1 reliable?
The price and inventory of NCP612SQ27T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP612SQ27T1 is usually 5 days.
3.What payment methods are accepted for NCP612SQ27T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP612SQ27T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP612SQ27T1?
NCP612SQ27T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP612SQ27T1 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 NCP612SQ27T1?
For technical support, including NCP612SQ27T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP612SQ27T1 requirements.
6.How does Aetrix verify that NCP612SQ27T1 is sourced from the original manufacturer or authorized distributors?
All NCP612SQ27T1 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 NCP612SQ27T1 meets industry standards.
7.What is the process for return or replacement of NCP612SQ27T1?
All NCP612SQ27T1 units undergo pre-shipment inspection (PSI). If there is an issue with NCP612SQ27T1, 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 NCP612SQ27T1 part is unused and in its original packaging.
Return procedure for NCP612SQ27T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NCP612SQ27T1 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…
