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onsemi NCP170BMX120TCG
- Part No.:
- NCP170BMX120TCG
- Manufacturer:
- onsemi
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
NCP170BMX120TCG.pdf
- Description:
- IC REG LINEAR 1.2V 150MA 4XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,631
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Product details
Overview
NCP170BMX120TCG 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, 170 mV typical dropout at full load, ±1% output accuracy over −40°C to +85°C, and ultra-low 500 nA typical quiescent current - enabling multi-year operation in coin-cell–powered IoT sensors and wearables.
For engineers reviewing the NCP170BMX120TCG datasheet, pinout, applications, or equivalent options, key selection criteria include its 1 × 1 mm XDFN4 package footprint, enable-pin logic (active-high), ceramic-capacitor compatibility, thermal shutdown behavior, and performance trade-offs between PSRR (57 dB @ 1 kHz) and output noise (85 µVRMS).
Technical Context
The NCP170BMX120TCG implements a PMOS pass transistor architecture enabling ultra-low IQ and fast transient response without requiring external compensation. Its internal bandgap reference and error amplifier maintain regulation across input voltages from 2.2 V to 5.5 V while supporting dynamic load steps common in wireless transceivers and image sensor burst modes.
Thermal protection activates at 175°C with 25°C hysteresis, and over-current limiting clamps short-circuit current to 225 mA. The device lacks active discharge (no "A" suffix), so output voltage decays only through system leakage when disabled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2 V ±1% over −40°C to +85°C - ensures stable core supply for 1.2 V logic rails in microcontrollers and ASICs |
| Max Output Current | 150 mA - sufficient for low-power MCU cores, BLE radios, and image sensor biasing |
| Dropout Voltage | 170 mV typ. at 150 mA - enables operation down to 1.37 V input, extending battery life in single-cell Li-ion or alkaline systems |
| Quiescent Current | 500 nA typ. - reduces standby power loss by >90% vs. standard LDOs, critical for >10-year battery life targets |
| PSRR | 57 dB @ 1 kHz - suppresses switching noise from DC-DC converters feeding the LDO input |
| Output Noise | 85 µVRMS (100 Hz–1 MHz) - low enough for analog sensor front-ends and RF PLL supplies |
| Enable Threshold | VENH = 1.2 V min., VENL = 0.4 V max. - compatible with 1.8 V GPIO and open-drain control signals |
Pinout & Package
Package: 1 × 1 mm, 4-pin XDFN4 (Case 711AJ), exposed pad internally connected to GND - provides low thermal resistance (250°C/W junction-to-air) and minimal PCB area.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input Power Supply | Accepts 2.2–5.5 V; requires 1 µF ceramic input capacitor close to pin for stability |
| 2 (GND) | Ground Reference | Power ground; EPAD is internally tied to this pin - must be soldered to PCB thermal pad |
| 3 (EN) | Enable Control Input | Active-high logic; draws ≤10 nA; pulls up to VIN or microcontroller GPIO |
| 4 (OUT) | Regulated Output | Delivers 1.2 V ±1%; requires 1 µF ceramic output capacitor with ESR < 100 mΩ |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ (500 nA) | Extends shelf life and operational runtime in always-on battery-powered nodes - e.g., 10-year life on CR2032 at 1 µA average load |
| Ceramic-capacitor stable | Eliminates need for tantalum or aluminum electrolytic capacitors - reduces BOM cost, size, and failure risk |
| ±1% output accuracy | Meets tight tolerance requirements of 1.2 V I/O domains and precision analog subsystems without external trimming |
| Thermal shutdown (175°C) | Prevents damage during sustained overload or poor PCB heatsinking - auto-recovery after cooldown |
| Over-current protection | Limits fault current to 225 mA - protects upstream power sources and prevents trace overheating |
Applications
| Wearable Health Sensor Node | BLE Beacon Module |
|---|---|
Use Scenario: Continuous ECG/PPG sensing powered by CR2032 coin cell with 10+ year target lifetime. IC Role / Device Role / Timing Role: Primary 1.2 V supply for ultra-low-power MCU and analog front-end ADC. Use Value: 500 nA quiescent current minimizes standby drain; ±1% accuracy ensures consistent ADC reference scaling across temperature. |
Use Scenario: Periodic advertising broadcast from compact PCB using Nordic nRF52 series SoC. IC Role / Device Role / Timing Role: Clean 1.2 V rail for SoC core domain during active transmit bursts. Use Value: 170 mV dropout allows operation down to 1.37 V input - extends usable battery range by ~15% vs. higher-IQ LDOs. |
| Industrial Wireless Sensor | Smart Camera Module |
Use Scenario: LoRaWAN node monitoring temperature/humidity in remote locations with AA alkaline cells. IC Role / Device Role / Timing Role: Regulated supply for microcontroller and sub-GHz transceiver during brief wake-up intervals. Use Value: Fast load transient response mitigates voltage sag during radio TX, preventing packet corruption. |
Use Scenario: Compact USB-C camera using OV5640 image sensor with embedded ISP requiring stable 1.2 V core supply. IC Role / Device Role / Timing Role: Dedicated LDO for sensor digital core, isolated from noisy USB power rail. Use Value: 85 µVRMS output noise avoids introducing fixed-pattern noise in captured images. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6210B122MR-G | 1.2 V fixed, 200 mA, 250 nA IQ, SOT-25 package (2.9 × 2.8 mm) | Larger footprint; lower IQ but no EN pin - unsuitable for controlled power sequencing | Select if board space permits larger package and enable control is unnecessary |
| Microchip MIC5205-1.2YM5-TR | 1.2 V fixed, 150 mA, 45 µA IQ, SOT-23-5 package | 100× higher quiescent current - reduces battery life by orders of magnitude in always-on use | Select only for non-battery applications where cost or availability outweighs ultra-low-power needs |
Compared with XC6210B122MR-G and MIC5205-1.2YM5-TR, the NCP170BMX120TCG uniquely balances ultra-small 1 × 1 mm XDFN4 size, enable functionality, and sub-µA IQ - making it optimal for space-constrained, long-life battery designs where precise power control is required.
Availability
NCP170BMX120TCG is available at Aetrix Electronics and suitable for wearable health monitors, BLE beacons, industrial wireless sensors, and smart camera modules requiring stable component supply with guaranteed long-term manufacturability.
Supply support for NCP170BMX120TCG 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 supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP170 series belongs to onsemi's ultra-low-IQ LDO portfolio, engineered specifically for battery-powered edge devices where multi-year operation and minimal PCB footprint are design imperatives.
FAQ
What is the input voltage range supported by the NCP170BMX120TCG?
The NCP170BMX120TCG operates across an input voltage range of 2.2 V to 5.5 V. This wide range supports direct connection to single-cell Li-ion (2.7–4.2 V), LiFePO₄ (2.0–3.6 V), or two-alkaline (2.4–3.2 V) batteries, as well as post-regulation from higher-voltage DC-DC converters. Operation below 2.2 V risks dropout or regulation loss.
Does the NCP170BMX120TCG require external capacitors, and what values are recommended?
Yes, the NCP170BMX120TCG requires both input and output ceramic capacitors for stability and transient performance. The datasheet specifies 1.0 µF for both CIN and COUT, placed as close as possible to the respective pins. Capacitors must have X5R or X7R dielectric and ESR < 100 mΩ; tantalum or electrolytic types are not recommended.
Is the NCP170BMX120TCG pin-compatible with other variants in the NCP170 family?
The NCP170BMX120TCG uses the XDFN4 (1 × 1 mm) package and shares identical pinout with all NCP170 XDFN4 variants - including different output voltages (e.g., NCP170BMX180TCG) and the "A" version with active discharge. Layout reuse is possible across these variants, provided the enable logic and output voltage tolerances align with system requirements.
What thermal protection features does the NCP170BMX120TCG include?
The NCP170BMX120TCG incorporates thermal shutdown that activates at +175°C junction temperature, with 25°C hysteresis to prevent oscillation near the trip point. Once triggered, the device disables output until junction temperature falls below +150°C. This protects against sustained overload, poor PCB thermal design, or ambient temperature extremes.
How does the enable (EN) pin function on the NCP170BMX120TCG?
The EN pin on the NCP170BMX120TCG is active-high: the regulator enables when voltage exceeds 1.2 V (min) and disables when pulled below 0.4 V (max). Input leakage is ≤10 nA, allowing direct drive from low-power GPIOs or RC delay networks. No external pull-up is required unless system-level reset timing demands it.
NCP170BMX120TCG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 4-XDFN Exposed Pad
- 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:
- 4-XDFN (1x1)
NCP170BMX120TCG FAQ
1.How can I place an order for NCP170BMX120TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP170BMX120TCG 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 NCP170BMX120TCG reliable?
The price and inventory of NCP170BMX120TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP170BMX120TCG is usually 5 days.
3.What payment methods are accepted for NCP170BMX120TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP170BMX120TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP170BMX120TCG?
NCP170BMX120TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP170BMX120TCG 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 NCP170BMX120TCG?
For technical support, including NCP170BMX120TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP170BMX120TCG requirements.
6.How does Aetrix verify that NCP170BMX120TCG is sourced from the original manufacturer or authorized distributors?
All NCP170BMX120TCG 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 NCP170BMX120TCG meets industry standards.
7.What is the process for return or replacement of NCP170BMX120TCG?
All NCP170BMX120TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCP170BMX120TCG, 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 NCP170BMX120TCG part is unused and in its original packaging.
Return procedure for NCP170BMX120TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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