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onsemi NCP170AXV120T2G
- Part No.:
- NCP170AXV120T2G
- Manufacturer:
- onsemi
- Package:
- SOT-563, SOT-666
- Datasheet:
-
NCP170AXV120T2G.pdf
- Description:
- IC REG LIN 1.2V 150MA SOT563-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,552
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Product details
Overview
NCP170AXV120T2G from onsemi is a CMOS low-dropout linear regulator designed for ultra-low-power portable battery applications. It delivers 150 mA output current with 1.2 V fixed output voltage, ultra-low quiescent current (typ. 500 nA), 170 mV dropout at full load, and ±1% output accuracy over −40°C to +85°C - enabling long runtime in wireless sensor nodes and image sensor biasing circuits.
For engineers reviewing the NCP170AXV120T2G datasheet, pinout, applications, or equivalent options, key selection criteria include its 2.2–5.5 V input range, active discharge capability ('A' variant), SOT-563 package footprint, and guaranteed stability with 1 µF ceramic output capacitors.
Technical Context
The NCP170AXV120T2G integrates a PMOS pass transistor with precision bandgap reference and error amplifier, enabling low dropout and high PSRR (57 dB at 1 kHz, 150 mA load). Its enable pin (EN) features TTL-compatible thresholds (VENH = 1.2 V, VENL ≤ 0.4 V) and sub-10 nA leakage, supporting precise system-level power sequencing.
Thermal shutdown (175°C trip, 25°C hysteresis) and over-current protection (225 mA short-circuit limit) are built-in. The 'A' suffix denotes active output discharge via internal 100 Ω pull-down when EN = low - critical for fast rail collapse in multi-rail systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2 V ±1% over −40°C to +85°C - ensures stable core/bias supply for low-voltage MCUs and image sensors. |
| Max Output Current | 150 mA - sufficient for powering single-core microcontrollers or analog front-ends in compact wearables. |
| Quiescent Current | Typ. 500 nA at zero load - extends battery life in always-on IoT endpoints (e.g., >10-year CR2032 operation). |
| Dropout Voltage | 170 mV typ. at 150 mA - enables regulation from 1.37 V input, supporting single-cell LiFePO₄ or dual-cell alkaline systems. |
| Input Voltage Range | 2.2 V to 5.5 V - compatible with Li-ion, Li-Poly, and regulated 3.3 V/5 V system rails. |
| PSRR | 57 dB at 1 kHz (150 mA load) - suppresses switching noise from adjacent DC-DC converters in mixed-signal PCBs. |
| Stability | Guaranteed with ≥1 µF ceramic output capacitor - eliminates need for bulky tantalum or electrolytic caps. |
Pinout & Package
SOT-563 (Case 463A) 6-pin package: 1.6 mm × 1.6 mm × 0.55 mm profile with exposed thermal pad (EPAD internally connected to GND). Optimized for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input Power Supply | Accepts 2.2–5.5 V; requires local 1 µF ceramic decoupling per datasheet layout guidelines. |
| 2 (GND) | Power Ground | Main return path; connects to EPAD for thermal conduction and noise control. |
| 3 (EN) | Enable Control Input | Active-high logic input (1.2 V threshold); <10 nA leakage allows direct MCU GPIO drive without pull-up. |
| 4 (OUT) | Regulated Output | Delivers 1.2 V ±1%; requires ≥1 µF ceramic capacitor to ground for stability. |
| 5 (GND) | Power Ground | Second ground terminal - must be tied to same plane as Pin 2 and EPAD for low-impedance return. |
| 6 (NC) | No Connect | Internally unconnected; left floating or tied to GND per board layout best practice. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ | 500 nA typical quiescent current - reduces standby power loss by >90% vs. standard LDOs, critical for energy harvesting systems. |
| Active Output Discharge | 100 Ω internal pull-down activated when EN = low - discharges output in <1 ms, preventing back-powering of upstream circuitry. |
| Ceramic Cap Stability | Stable with 1 µF X5R/X7R MLCCs - eliminates ESR requirements and simplifies BOM by removing need for specialized capacitors. |
| Thermal Protection | 175°C shutdown with 25°C hysteresis - prevents permanent damage during sustained overload or poor heatsinking. |
| Pb-Free & RoHS | Halogen-free/BFR-free construction - meets IPC-J-STD-020 moisture sensitivity level 1 (MSL1) and automotive AEC-Q100 stress testing. |
Applications
| Wearable Health Sensors | Wireless IoT Endpoints |
|---|---|
Use Scenario: Continuous ECG/PPG signal acquisition powered by coin-cell battery. IC Role / Device Role / Timing Role: Provides ultra-stable 1.2 V bias for analog front-end and low-power MCU core. Use Value: 500 nA IQ enables >5-year battery life; ±1% accuracy maintains ADC reference integrity across temperature. |
Use Scenario: BLE/Wi-Fi sensor node transmitting periodic temperature/humidity data. IC Role / Device Role / Timing Role: Powers RF transceiver and microcontroller during active transmit bursts. Use Value: 170 mV dropout allows operation down to 1.37 V input, extending usable voltage range of single Li-ion cell. |
| CMOS Image Sensor Bias | Industrial Handheld Scanners |
Use Scenario: Low-noise bias supply for global-shutter CMOS image sensors in barcode readers. IC Role / Device Role / Timing Role: Delivers clean 1.2 V analog supply independent of noisy digital rails. Use Value: 85 µVrms output noise (100 Hz–1 MHz) minimizes sensor readout noise floor degradation. |
Use Scenario: Rugged handheld scanner with LCD, laser diode, and decode engine. IC Role / Device Role / Timing Role: Supplies 1.2 V core voltage to ARM Cortex-M4 processor during burst decoding. Use Value: Active discharge ('A' variant) ensures rapid rail collapse between scans, eliminating latch-up risk in multi-supply systems. |
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/MB | 150 mA, 1.2 V, 1.6 µA IQ (typ), no active discharge, SOT-23-5 | Lacks active discharge; higher IQ increases standby drain in always-on systems | Select if active discharge is unnecessary and SOT-23-5 footprint is preferred. |
| Torex XC6206P122MR-G | 150 mA, 1.2 V, 1 µA IQ (typ), no EN pin, SOT-23-3 | No enable control or active discharge; smaller 3-pin package limits system-level power management | Choose only for simple, always-on applications where EN functionality is not required. |
Compared with MCP1700T-1202E/MB and XC6206P122MR-G, the NCP170AXV120T2G uniquely combines ultra-low 500 nA IQ, integrated active discharge, and enable control in a 6-pin SOT-563 - making it optimal for battery-powered systems requiring both longevity and controlled power sequencing.
Availability
NCP170AXV120T2G is available at Aetrix Electronics and suitable for wearable health sensors, wireless IoT endpoints, and industrial handheld scanners requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for NCP170AXV120T2G 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 (Nasdaq: ON) is a global semiconductor leader delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP170 series targets ultra-low-power portable electronics, emphasizing nanoscale quiescent current, small-footprint packaging, and robust protection features for battery-constrained edge devices.
FAQ
What is the maximum input voltage rating for the NCP170AXV120T2G?
The NCP170AXV120T2G has an absolute maximum input voltage of 6.0 V. Operation beyond this rating risks permanent device damage. For reliable continuous operation, the recommended input range is 2.2 V to 5.5 V, as specified in the Electrical Characteristics table. This range ensures proper regulation, thermal performance, and PSRR behavior across all load and temperature conditions defined in the datasheet.
Does the NCP170AXV120T2G require an external capacitor on the EN pin?
No, the NCP170AXV120T2G does not require an external capacitor on the EN pin. Its EN input exhibits <10 nA leakage current and TTL-compatible thresholds (VENH ≥ 1.2 V, VENL ≤ 0.4 V), allowing direct connection to microcontroller GPIOs or logic gates without filtering or pull-up components. This simplifies design and reduces BOM count while maintaining robust noise immunity per AEC-Q100 ESD testing (2 kV HBM).
How does the active discharge function operate in the NCP170AXV120T2G?
The NCP170AXV120T2G's 'A' suffix indicates integrated active output discharge: when the EN pin is driven low, an internal 100 Ω switch connects the OUT pin to GND, discharging the output capacitor rapidly. This feature prevents back-powering of upstream circuitry and ensures clean power-down sequencing - critical in multi-rail systems where uncontrolled rail collapse could cause latch-up or data corruption.
Can the NCP170AXV120T2G be used with a 1 µF ceramic output capacitor?
Yes, the NCP170AXV120T2G is explicitly characterized and guaranteed stable with a minimum 1 µF X5R or X7R ceramic output capacitor. Unlike many LDOs requiring specific ESR ranges, this device eliminates ESR constraints - enabling use of low-ESR, high-reliability MLCCs and reducing solution size and cost versus tantalum or aluminum electrolytic alternatives.
What is the thermal resistance (RJA) of the NCP170AXV120T2G in its SOT-563 package?
The NCP170AXV120T2G in the SOT-563 package (Case 463A) has a junction-to-air thermal resistance (RJA) of 200°C/W, as specified in the Thermal Characteristics table. This value assumes standard JEDEC 2-layer board conditions (1-inch² copper pad). Actual thermal performance improves with enhanced PCB copper area, thermal vias to inner layers, and proper EPAD soldering - enabling reliable 150 mA operation up to +85°C ambient.
NCP170AXV120T2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOT-563, SOT-666
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 900 nA
- Current - Supply (Max):
- -
- PSRR:
- 63dB ~ 57dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-563
NCP170AXV120T2G FAQ
1.How can I place an order for NCP170AXV120T2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP170AXV120T2G 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 NCP170AXV120T2G reliable?
The price and inventory of NCP170AXV120T2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP170AXV120T2G is usually 5 days.
3.What payment methods are accepted for NCP170AXV120T2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP170AXV120T2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP170AXV120T2G?
NCP170AXV120T2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP170AXV120T2G 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 NCP170AXV120T2G?
For technical support, including NCP170AXV120T2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP170AXV120T2G requirements.
6.How does Aetrix verify that NCP170AXV120T2G is sourced from the original manufacturer or authorized distributors?
All NCP170AXV120T2G 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 NCP170AXV120T2G meets industry standards.
7.What is the process for return or replacement of NCP170AXV120T2G?
All NCP170AXV120T2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP170AXV120T2G, 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 NCP170AXV120T2G part is unused and in its original packaging.
Return procedure for NCP170AXV120T2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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