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onsemi NCP171A3MX170165TCG
- Part No.:
- NCP171A3MX170165TCG
- Manufacturer:
- onsemi
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
NCP171A3MX170165TCG.pdf
- Description:
- IC REG LINEAR 1.7V 80MA 4XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
NCP171A3MX170165TCG from onsemi is an ultra-low-quiescent-current dual-mode LDO regulator delivering 80 mA in Active Mode and consuming only 50 nA in Low Power Mode. It features factory-programmed 165 mV output voltage offset in Low Power Mode (vs. 1.7 V nominal Active Mode output), ECO pin-controlled mode switching, and operates across 1.7 V–5.5 V input range - ideal for battery-powered IoT sensors requiring multi-year operation.
For engineers reviewing the NCP171A3MX170165TCG datasheet, pinout, applications, or equivalent options, key selection criteria include its 50 nA IQ, 165 mV programmable low-power voltage offset, XDFN4 1.2×1.2 mm package, active discharge, and ±2% output accuracy in Active Mode.
Technical Context
The NCP171A3MX170165TCG implements a dual-path internal architecture: one optimized for ultra-low IQ (50 nA) and 5 mA load capability in Low Power Mode, and another for high PSRR (65 dB @ 1 kHz), fast transient response, and 80 mA delivery in Active Mode. Mode selection is controlled externally via the ECO pin with defined threshold voltages (VECOL = 0.2 V, VECOH = 0.5 V).
Its output voltage is factory-set to 1.7 V nominal in Active Mode and reduced by 165 mV (to 1.535 V) in Low Power Mode. The device includes integrated current limiting (140–170 mA in Active Mode), thermal shutdown (TSD = 165 °C), and active output discharge (RDS(on) ≈ 50 Ω) for rapid turn-off.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Quiescent Current (LP) | 50 nA typical at no load - enables >10-year battery life in sleep-state sensor nodes |
| Output Voltage Offset | 165 mV factory-programmed reduction in Low Power Mode - lowers system power by ~9.7% at same load |
| Max Output Current | 80 mA in Active Mode, 5 mA in Low Power Mode - supports intermittent RF transmission and sensor wake-up bursts |
| Dropout Voltage | 43 mV typical at 80 mA, VOUT = 3.0 V - allows operation down to VIN = 1.73 V while regulating 1.7 V output |
| PSRR | 65 dB at 1 kHz in Active Mode - suppresses noise from shared PMIC rails in mixed-signal SoC systems |
| Output Accuracy | ±2% over −40°C to +85°C in Active Mode - ensures reliable MCU core voltage margin without external trimming |
| Enable Threshold | VENA(H) = 1.2 V, VENA(L) = 0.4 V - compatible with 1.8 V and 3.3 V GPIOs for precise power sequencing |
Pinout & Package
Package: XDFN4 1.2 mm × 1.2 mm, 5-pin (4 signal + 1 exposed pad), case 711BC, RoHS-compliant, Pb-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - ECO | Mode control input | Pulling to GND selects Low Power Mode (50 nA IQ); pulling to VOUT selects Active Mode (80 mA) |
| 2 - OUT | Regulated output | Delivers stable 1.7 V (Active) or 1.535 V (Low Power) with active discharge to GND when disabled |
| 3 - IN | Input supply | Accepts 1.7–5.5 V; requires 1.0 µF ceramic decoupling capacitor placed adjacent to pin |
| 4 - ENA | Enable input | Logic-high ≥1.2 V enables regulation; logic-low ≤0.4 V disables output and reduces IIN to 30 nA |
| 5 (EP) - GND | Power ground / thermal pad | Exposed pad must be soldered to PCB ground plane for thermal relief (RJA = 170 °C/W) |
Key Features
| Feature | Design Value |
|---|---|
| Dual power mode | Externally switchable between 80 mA/55–95 µA Active Mode and 5 mA/50 nA Low Power Mode - eliminates need for external enable logic |
| Factory-programmed offset | 165 mV fixed reduction in Low Power Mode output - avoids software calibration or external resistor dividers |
| Active output discharge | Internal 50 Ω NMOS pulls OUT to GND during disable - prevents floating voltage that could disrupt downstream logic |
| Thermal protection | 165 °C shutdown with 20 °C hysteresis - prevents damage during sustained overload or poor PCB thermal design |
| High PSRR at low frequency | 65 dB @ 1 kHz in Active Mode - maintains clean supply for ADCs, PLLs, and RF transceivers sharing noisy input rails |
Applications
| Wireless Sensor Node | Asset Tracking Tag |
|---|---|
Use Scenario: Battery-powered temperature/humidity node transmitting data every 5 minutes via BLE or LoRaWAN. IC Role / Device Role / Timing Role: Primary voltage regulator supplying MCU, sensor, and radio; switches to Low Power Mode between transmissions. Use Value: 50 nA quiescent current extends CR2032 battery life beyond 7 years; 165 mV voltage scaling further cuts sleep-mode power by 9.7%. | Use Scenario: GPS-enabled logistics tag reporting location hourly using cellular NB-IoT or LTE-M. IC Role / Device Role / Timing Role: Powers GPS module and modem during brief active windows; regulates at 1.7 V for MCU and 1.535 V in sleep. Use Value: Dual-mode operation eliminates need for discrete enable circuitry; active discharge ensures safe reset of modem after transmission. |
| Wearable Health Monitor | Smart Meter Endpoint |
Use Scenario: Optical heart-rate sensor worn continuously, sampling biometrics every 10 seconds and logging locally. IC Role / Device Role / Timing Role: Supplies analog front-end and low-power MCU; enters Low Power Mode during inter-sample intervals. Use Value: ±2% output accuracy guarantees consistent ADC reference; 1.2×1.2 mm XDFN4 fits tight space constraints in compact wearable PCBs. | Use Scenario: Sub-metering endpoint collecting energy usage data and transmitting daily via PLC or RF mesh network. IC Role / Device Role / Timing Role: Regulates power for metrology ASIC and communication IC; remains in Low Power Mode >99.9% of time. Use Value: 170 °C/W thermal resistance enables reliable operation in sealed, thermally isolated meter enclosures without heatsinks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1703T-1702E/MB | Fixed 1.7 V output, no Low Power Mode or voltage offset; 1.8 µA IQ; SOT-23-5 package | Lacks dynamic mode switching and sleep-state voltage scaling - unsuitable for multi-year battery life targets | Select when only basic 1.7 V regulation is needed and ultra-low IQ is not required |
| Torex XC6210B172MR-G | 1.7 V output, 250 nA IQ, no programmable offset or ECO control; USP-4 package (1.2×1.2 mm) | Higher IQ reduces battery life by ~5× vs. NCP171A3MX170165TCG; no active discharge or thermal shutdown | Select when footprint compatibility is critical but full feature set is not required |
Compared with MCP1703T-1702E/MB and XC6210B172MR-G, the NCP171A3MX170165TCG uniquely delivers 50 nA IQ, factory-set 165 mV low-power voltage scaling, and integrated active discharge - enabling longest possible battery life and simplified system-level power management in duty-cycled IoT endpoints.
Availability
NCP171A3MX170165TCG is available at Aetrix Electronics and suitable for wireless sensor nodes, asset tracking tags, wearable health monitors, and smart meter endpoints requiring stable component supply with guaranteed long-term manufacturability.
Supply support for NCP171A3MX170165TCG 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 NCP171A3MX170165TCG belongs to onsemi's SLIQ (Super Low IQ) LDO family, engineered specifically for ultra-long-life battery-powered edge devices where nanowatt-level standby consumption and intelligent voltage scaling are mandatory.
FAQ
What is the factory-programmed output voltage offset for NCP171A3MX170165TCG?
The NCP171A3MX170165TCG has a factory-programmed 165 mV output voltage offset in Low Power Mode relative to its 1.7 V nominal Active Mode output - resulting in 1.535 V regulation during sleep. This value is laser-trimmed and non-adjustable; it is confirmed in Table 4 of the datasheet under "Offset (Note 5)" and reflected in the part number suffix "165".
How does the ECO pin control mode switching on NCP171A3MX170165TCG?
The ECO pin on NCP171A3MX170165TCG selects operating mode: pulling ECO to GND (≤0.2 V) forces Low Power Mode (50 nA IQ, 5 mA max load); pulling ECO to VOUT (≥0.5 V) selects Active Mode (55–95 µA IQ, 80 mA max load). Startup defaults to Active Mode for 35 ms regardless of ECO state to ensure stable output capacitor charging.
What is the maximum dropout voltage of NCP171A3MX170165TCG at 80 mA load?
At 80 mA load and VOUT = 3.0 V in Active Mode, the NCP171A3MX170165TCG exhibits a typical dropout voltage of 43 mV and a maximum of 65 mV (Table 4). For its configured 1.7 V output, dropout is not characterized below 1.8 V per datasheet Note 6, but operation remains stable down to VIN = 1.73 V based on typical curves and application guidance.
Does NCP171A3MX170165TCG include thermal protection?
Yes, NCP171A3MX170165TCG incorporates thermal shutdown with a trip point of 165 °C and 20 °C hysteresis (Table 4, "Thermal Shutdown Temperature"). This protects the device during sustained overload or inadequate PCB thermal design, and recovery occurs automatically once junction temperature falls below 145 °C.
What package type and dimensions does NCP171A3MX170165TCG use?
NCP171A3MX170165TCG uses the XDFN4 1.2 mm × 1.2 mm surface-mount package (Case 711BC), with 4 signal pins and 1 exposed thermal pad (pin 5). Its compact footprint and low profile (0.4 mm height) support high-density PCB layouts in space-constrained IoT and wearable designs.
NCP171A3MX170165TCG 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):
- 1.7V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 80mA
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- 420 µA
- PSRR:
- 65dB (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:
- 4-XDFN (1.2x1.2)
NCP171A3MX170165TCG FAQ
1.How can I place an order for NCP171A3MX170165TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP171A3MX170165TCG 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 NCP171A3MX170165TCG reliable?
The price and inventory of NCP171A3MX170165TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP171A3MX170165TCG is usually 5 days.
3.What payment methods are accepted for NCP171A3MX170165TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP171A3MX170165TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP171A3MX170165TCG?
NCP171A3MX170165TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP171A3MX170165TCG 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 NCP171A3MX170165TCG?
For technical support, including NCP171A3MX170165TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP171A3MX170165TCG requirements.
6.How does Aetrix verify that NCP171A3MX170165TCG is sourced from the original manufacturer or authorized distributors?
All NCP171A3MX170165TCG 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 NCP171A3MX170165TCG meets industry standards.
7.What is the process for return or replacement of NCP171A3MX170165TCG?
All NCP171A3MX170165TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCP171A3MX170165TCG, 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 NCP171A3MX170165TCG part is unused and in its original packaging.
Return procedure for NCP171A3MX170165TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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