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onsemi NCP170AMX285TCG
- Part No.:
- NCP170AMX285TCG
- Manufacturer:
- onsemi
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
NCP170AMX285TCG.pdf
- Description:
- IC REG LINEAR 2.85V 150MA 4XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,226
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Product details
Overview
NCP170AMX285TCG from onsemi is a CMOS low-dropout linear regulator designed for ultra-low-power portable battery applications. It delivers 150 mA output current with 2.85 V fixed output voltage, 170 mV typical dropout at full load, ±1% output accuracy, and ultra-low 500 nA quiescent current-enabling extended runtime in wearables and IoT sensors.
For engineers reviewing the NCP170AMX285TCG datasheet, pinout, applications, or equivalent options, key selection criteria include its XDFN4 1×1 mm package, active discharge capability ('A' suffix), EN pin logic thresholds (VENH = 1.2 V, VENL ≤ 0.4 V), and stable operation with 1 µF ceramic output capacitors.
Technical Context
The NCP170AMX285TCG integrates a PMOS pass transistor enabling low dropout performance and inherent reverse-current blocking. Its enable input supports system-level power sequencing, while internal thermal shutdown (175°C) and over-current protection ensure robust operation under fault conditions.
Designed for battery-powered systems, it operates across 2.2 V to 5.5 V input range and maintains regulation down to 2.85 V output with <20 mV load regulation (0–150 mA) and 0.05%/V line regulation-critical for maintaining stable rail integrity during battery discharge and dynamic load changes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.85 V ±1% - ensures precise biasing for 2.8 V–3.0 V logic rails and analog sensors |
| Max Output Current | 150 mA - sufficient for microcontrollers, RF transceivers, and image sensor biasing |
| Quiescent Current | Typ. 500 nA - extends battery life in always-on, low-duty-cycle IoT endpoints |
| Dropout Voltage | Typ. 210 mV at 150 mA - enables regulation down to ~3.06 V input, supporting Li-ion (3.0–4.2 V) and coin-cell (2.8–3.6 V) sources |
| PSRR | 40 dB at 1 kHz, 150 mA load - suppresses switching noise from adjacent DC-DC converters |
| Output Noise | 125 µVRMS (100 Hz–1 MHz) - suitable for noise-sensitive analog front-ends and ADC references |
| Enable Threshold | VENH = 1.2 V, VENL ≤ 0.4 V - compatible with 1.8 V and 3.3 V GPIO control without level-shifting |
Pinout & Package
Package: XDFN4 (1 mm × 1 mm, 0.4 mm height), case 711AJ, moisture sensitivity level 1 (MSL1), Pb-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input Power Supply | Accepts 2.2–5.5 V; requires local 1 µF ceramic decoupling capacitor |
| 2 (GND) | Ground Reference | Power ground connection; internally bonded to EPAD for thermal conduction |
| 3 (EN) | Enable Control Input | Active-high logic; draws ≤10 nA; enables fast wake-up from nanoamp standby mode |
| 4 (OUT) | Regulated Output | Delivers 2.85 V ±1%; stable with 1 µF ceramic output capacitor |
| EPAD | Thermal Pad | Internally connected to GND; must be soldered to PCB copper for thermal management (RJA = 250°C/W) |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ | 500 nA typical quiescent current enables >10-year battery life in 1 µA average-load applications |
| Active Output Discharge | 100 Ω internal discharge path (A-suffix) rapidly collapses output when disabled-prevents floating rails and latch-up in multi-rail systems |
| Ceramic Cap Stability | Stable with ≥1 µF X5R/X7R ceramic output capacitor-eliminates need for larger, less reliable electrolytics |
| Thermal Protection | 175°C shutdown with 25°C hysteresis prevents permanent damage during sustained overload or poor heatsinking |
| Small Footprint | 1 mm × 1 mm XDFN4 package saves >70% board area vs. SOT-563-ideal for space-constrained wearables |
Applications
| Wearable Health Sensors | IoT Edge Node Power |
|---|---|
Use Scenario: Continuous ECG/PPG monitoring in wrist-worn devices powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Primary 2.85 V supply for analog front-end and BLE SoC during active sensing and sleep cycles. Use Value: 500 nA quiescent current extends battery life beyond 2 years; active discharge prevents sensor bias leakage during deep sleep. | Use Scenario: Battery-backed environmental sensor node transmitting temperature/humidity data every 5 minutes via LoRaWAN. IC Role / Device Role / Timing Role: Regulated 2.85 V rail for MCU, radio, and precision ADC-enabled only during transmit/sense windows. Use Value: EN pin compatibility with 1.8 V MCU GPIO allows direct control; 210 mV dropout preserves operation until battery reaches 3.06 V. |
| Camera Module Biasing | Industrial Wireless Sensor |
Use Scenario: Low-light image sensor in compact security camera requiring clean, low-noise analog supply. IC Role / Device Role / Timing Role: Dedicated 2.85 V LDO for sensor analog core and PLL clock generation circuitry. Use Value: 125 µVRMS output noise and 40 dB PSRR minimize clock jitter and image fixed-pattern noise. | Use Scenario: Explosion-proof gas detector using intrinsically safe 3.6 V lithium-thionyl chloride battery. IC Role / Device Role / Timing Role: Final-stage regulator delivering stable 2.85 V to gas-sensing electrochemical cell interface and signal conditioning ASIC. Use Value: ±1% output accuracy ensures consistent sensor calibration; thermal shutdown protects against ambient temperature excursions in harsh environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-2802E/MB | 2.8 V output (not 2.85 V); 1.6 µA IQ (3× higher); SOT-23-5 package (larger footprint) | Lacks active discharge; higher IQ reduces battery life in ultra-low-power use cases | Select only if 2.8 V output tolerance is acceptable and board space permits SOT-23-5 |
| Torex XC6206P282MR-G | 2.8 V output; 1 µA IQ; SOT-25 package; no EN pin or thermal shutdown | No enable control or fault protection-requires external circuitry for sequencing and safety | Consider only for cost-sensitive, non-safety-critical applications with fixed 2.8 V requirement |
Compared with MCP1700T-2802E/MB and XC6206P282MR-G, the NCP170AMX285TCG provides exact 2.85 V output, lowest quiescent current (500 nA), integrated enable and thermal protection, and smallest 1×1 mm footprint-making it optimal for space- and energy-constrained designs where precision and reliability are critical.
Availability
NCP170AMX285TCG is available at Aetrix Electronics and suitable for wearable health monitors, IoT edge nodes, camera modules, and industrial wireless sensors requiring stable component supply with guaranteed long-term availability.
Supply support for NCP170AMX285TCG 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 is a global semiconductor supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP170 series is engineered specifically for ultra-low-power portable electronics, emphasizing nanoscale quiescent current, miniature packaging, and robust protection features for battery longevity and system reliability.
FAQ
What is the output voltage tolerance of the NCP170AMX285TCG over temperature?
The NCP170AMX285TCG maintains ±1% output voltage accuracy across the full operating junction temperature range of −40°C to +85°C. At +25°C, the output is tightly regulated between 2.822 V and 2.878 V; over temperature, it remains within 2.822 V to 2.878 V per the datasheet's electrical characteristics table for the 2.8 V version group, confirmed by characterization data in Figures 8 and 13.
Does the NCP170AMX285TCG require an external capacitor for stability?
Yes, the NCP170AMX285TCG requires a minimum 1 µF ceramic output capacitor (X5R or X7R dielectric) placed close to the OUT and GND pins for stability. The datasheet explicitly states "Stable with Ceramic Capacitors 1 µF" and validates performance with 1 µF in all electrical test conditions and typical application schematics-no additional input capacitor is mandatory but recommended for noise filtering.
What does the 'A' in NCP170AMX285TCG signify?
The 'A' suffix in NCP170AMX285TCG denotes the Active Discharge option: when the EN pin is driven low, an internal 100 Ω switch connects the OUT pin to GND, rapidly discharging the output capacitor. This feature prevents residual voltage from interfering with downstream circuitry during power-down sequences-critical in multi-rail systems and precision analog applications.
What is the maximum input voltage rating for the NCP170AMX285TCG?
The absolute maximum input voltage for the NCP170AMX285TCG is 6.0 V, as specified in the Absolute Maximum Ratings table. Operation above this voltage risks permanent device damage. For continuous reliable operation, the recommended input voltage range is 2.2 V to 5.5 V, ensuring proper regulation and thermal performance across all load and temperature conditions.
How does the NCP170AMX285TCG behave during thermal overload?
When junction temperature exceeds 175°C, the NCP170AMX285TCG activates thermal shutdown, turning off the pass element to halt power delivery and prevent damage. Once temperature falls by 25°C (to ~150°C), the device automatically recovers and resumes regulation-providing self-protecting operation without requiring external intervention or reset signals.
NCP170AMX285TCG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 4-XDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.85V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 900 nA
- Current - Supply (Max):
- -
- PSRR:
- -
- 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:
- 4-XDFN (1x1)
NCP170AMX285TCG FAQ
1.How can I place an order for NCP170AMX285TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP170AMX285TCG 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 NCP170AMX285TCG reliable?
The price and inventory of NCP170AMX285TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP170AMX285TCG is usually 5 days.
3.What payment methods are accepted for NCP170AMX285TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP170AMX285TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP170AMX285TCG?
NCP170AMX285TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP170AMX285TCG 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 NCP170AMX285TCG?
For technical support, including NCP170AMX285TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP170AMX285TCG requirements.
6.How does Aetrix verify that NCP170AMX285TCG is sourced from the original manufacturer or authorized distributors?
All NCP170AMX285TCG 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 NCP170AMX285TCG meets industry standards.
7.What is the process for return or replacement of NCP170AMX285TCG?
All NCP170AMX285TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCP170AMX285TCG, 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 NCP170AMX285TCG part is unused and in its original packaging.
Return procedure for NCP170AMX285TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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