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onsemi NCP103BMX250TCG
- Part No.:
- NCP103BMX250TCG
- Manufacturer:
- onsemi
- Package:
- 4-UDFN Exposed Pad
- Datasheet:
-
NCP103BMX250TCG.pdf
- Description:
- IC REG LINEAR 2.5V 150MA 4UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,486
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Product details
Overview
NCP103BMX250TCG from onsemi is a 150 mA CMOS low-dropout linear regulator with fixed 2.5 V output, optimized for space-constrained, noise-sensitive battery-powered systems. It delivers ±1% output accuracy at room temperature, 75 mV typical dropout at full load, and 75 dB PSRR at 1 kHz - enabling stable power for RF and analog circuitry in portable electronics.
For engineers reviewing the NCP103BMX250TCG datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low quiescent current (50 µA typ.), active discharge absence (B-suffix), uDFN4 1.0×1.0 mm package compatibility, and stability with 1 µF ceramic output capacitor.
Technical Context
The NCP103BMX250TCG employs a PMOS pass transistor architecture with dynamic quiescent current adjustment, enabling sub-100 µA IQ across input voltage range (1.7–5.5 V). Its internal bandgap reference and error amplifier deliver tight regulation under varying load (1–150 mA) and temperature (−40°C to +85°C).
No active output discharge function is integrated - confirmed by the "B" suffix per ordering table - distinguishing it from "A" variants. Protection features include thermal shutdown (160°C trip, 20°C hysteresis) and current limiting (550 mA typ.), with operation validated using only 1 µF X5R/X7R ceramic capacitors on IN and OUT.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5 V ±2% over −40°C to +85°C - ensures precision biasing for ADC references and RF ICs without external feedback. |
| Max Output Current | 150 mA continuous - sufficient for powering single-core microcontrollers, sensors, or Bluetooth baseband ICs. |
| Dropout Voltage | 120 mV typical at 150 mA - enables regulation from 2.62 V input, critical for single-cell Li-ion or Li-poly systems near end-of-discharge. |
| Quiescent Current | 50 µA typical at no load - extends battery life in always-on monitoring modes (e.g., wearable motion sensing). |
| PSRR | 75 dB at 1 kHz - suppresses switching noise from adjacent DC-DC converters, preserving signal integrity in audio/RF paths. |
| Stability | Guaranteed with ≥1 µF ceramic output capacitor - eliminates need for tantalum or large electrolytics, reducing board area and cost. |
| Enable Threshold | 0.9 V high / 0.4 V low - compatible with 1.8 V GPIO logic and supports direct tie-to-IN if enable control is unused. |
Pinout & Package
Package: uDFN4 1.0×1.0 mm, 0.65 mm pitch, exposed pad (Case 517CU). Thermal resistance RJA = 170°C/W on 1 oz FR-4 with 645 mm² copper area. Exposed pad must be soldered directly to GND plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Regulated output | Delivers 2.5 V; requires ≥1 µF ceramic capacitor to GND for stability and transient response. |
| 2 - GND | Power ground | Reference node for regulation; connects to exposed pad for thermal dissipation and low-impedance return path. |
| 3 - EN | Enable control input | Logic-high (>0.9 V) enables regulation; logic-low (<0.4 V) disables output and draws ≤1 µA shutdown current. |
| 4 - IN | Input supply | Accepts 1.7–5.5 V; requires local 1 µF ceramic capacitor to suppress input ripple and trace inductance effects. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ | 50 µA typical at no load - reduces standby power in IoT edge nodes, extending shelf life and operational runtime. |
| No active discharge | B-suffix confirms absence of output discharge MOSFET - avoids unintended discharge of backup rails or energy-harvesting storage. |
| Low-noise output | 60 µVRMS (10 Hz–100 kHz) - meets stringent noise requirements for precision analog front-ends and RF synthesizers. |
| Robust protection | Thermal shutdown (160°C), current limit (550 mA), and short-circuit tolerance - enables reliable operation in unattended embedded systems. |
| Pb-free & RoHS | uDFN4 package with halogen-free/BFR-free construction - compliant with global environmental regulations and lead-free reflow profiles. |
Applications
| Wireless Sensor Node | Portable Medical Monitor |
|---|---|
|
Use Scenario: Battery-powered temperature/humidity sensor transmitting via BLE every 5 seconds. IC Role / Device Role / Timing Role: Supplies clean 2.5 V to MCU core and analog sensor interface, maintaining accuracy during RF burst transmission. Use Value: 50 µA quiescent current extends 200 mAh coin cell life beyond 2 years; 75 dB PSRR prevents RF coupling into sensor readings. |
Use Scenario: Handheld pulse oximeter with OLED display and photodiode front-end. IC Role / Device Role / Timing Role: Powers analog signal chain (transimpedance amp, ADC reference) and low-power display controller. Use Value: ±2% output accuracy ensures consistent LED drive and SpO₂ calculation; 1 µF ceramic stability simplifies layout in compact enclosure. |
| Wearable Fitness Tracker | Industrial Handheld Scanner |
|
Use Scenario: Arm-worn device with accelerometer, heart-rate monitor, and Bluetooth LE radio. IC Role / Device Role / Timing Role: Provides regulated 2.5 V to mixed-signal SoC and optical sensor array during motion-induced load transients. Use Value: 120 mV dropout allows operation down to 2.62 V input - critical for maintaining function as single-cell Li-poly discharges from 4.2 V to 2.7 V. |
Use Scenario: Ruggedized barcode scanner with laser diode driver and ARM Cortex-M4 host. IC Role / Device Role / Timing Role: Supplies low-noise 2.5 V to image sensor interface and real-time clock backup domain. Use Value: 170°C/W thermal resistance enables passive cooling in sealed housing; shutdown current <1 µA preserves battery during idle periods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-2502E/MB | 250 mA output, 1.6 µA IQ, SOT-23-5 package - higher current but larger footprint and no thermal shutdown. | Lacks thermal shutdown and current limit - unsuitable for enclosed or high-ambient environments without derating. | Select when >150 mA is required and thermal margin is assured; verify PCB heat sinking for sustained loads. |
| Torex XC6206P252MR-G | 150 mA, 1 µA IQ, SOT-25 - lower IQ but only 60 dB PSRR at 1 kHz and no enable pin. | No enable control limits power sequencing flexibility; reduced PSRR compromises noise-sensitive analog stages. | Prefer for ultra-low-power sleep modes where enable control and RF immunity are not required. |
Compared with MCP1700T-2502E/MB and XC6206P252MR-G, the NCP103BMX250TCG uniquely balances ultra-low IQ (50 µA), robust protection (thermal + current limit), and high PSRR (75 dB) in a 1.0×1.0 mm uDFN - making it optimal for miniaturized, battery-critical designs demanding reliability and noise immunity.
Availability
NCP103BMX250TCG is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical monitors, wearable fitness trackers, and industrial handheld scanners requiring stable component supply and long-term manufacturability.
Supply support for NCP103BMX250TCG 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 (Semiconductor Components Industries, LLC) is a global semiconductor supplier focused on energy-efficient innovation for automotive, industrial, cloud, and IoT applications.
The NCP103 series is designed for ultra-low-power, noise-sensitive portable electronics - delivering high PSRR, minimal dropout, and micropower operation in miniature packages for next-generation battery-powered devices.
FAQ
What is the output voltage tolerance of the NCP103BMX250TCG over temperature?
The NCP103BMX250TCG provides ±2% output voltage accuracy across −40°C to +85°C junction temperature. At room temperature (25°C), it achieves tighter ±1% tolerance. This specification ensures reliable operation for precision analog circuits like sensor references and RF bias networks without calibration.
Does the NCP103BMX250TCG include active output discharge?
No, the NCP103BMX250TCG does not include active output discharge. The "B" suffix in the part number explicitly denotes absence of this feature - unlike "A" variants (e.g., NCP103AMX250TCG). When disabled, the output floats rather than being pulled to GND through an internal resistor.
What is the minimum output capacitor required for stability with the NCP103BMX250TCG?
The NCP103BMX250TCG is stable with a minimum 1 µF X5R or X7R ceramic capacitor on the output. The datasheet confirms stability down to 0.22 µF effective capacitance, accounting for DC bias and temperature derating - enabling use of compact 0402-size MLCCs.
Can the NCP103BMX250TCG operate from a single-cell Li-ion battery throughout its discharge curve?
Yes - the NCP103BMX250TCG operates from 1.7 V to 5.5 V input and maintains regulation with only 120 mV dropout at 150 mA. With a 2.5 V output, it functions continuously from 2.62 V input, covering most of a single-cell Li-ion's 4.2 V → 2.7 V discharge range.
What thermal considerations apply to the NCP103BMX250TCG in a compact PCB layout?
The NCP103BMX250TCG has RJA = 170°C/W on standard 1 oz FR-4. To avoid thermal shutdown at 150 mA, keep power dissipation below 125 mW (e.g., VIN ≤ 3.3 V). Use the exposed pad tied directly to a solid GND plane - increasing copper area reduces RJA significantly per Figure 42.
NCP103BMX250TCG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 4-UDFN 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):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 95 µA
- Current - Supply (Max):
- -
- PSRR:
- 75dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-UDFN (1.0x1.0)
NCP103BMX250TCG FAQ
1.How can I place an order for NCP103BMX250TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP103BMX250TCG 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 NCP103BMX250TCG reliable?
The price and inventory of NCP103BMX250TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP103BMX250TCG is usually 5 days.
3.What payment methods are accepted for NCP103BMX250TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP103BMX250TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP103BMX250TCG?
NCP103BMX250TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP103BMX250TCG 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 NCP103BMX250TCG?
For technical support, including NCP103BMX250TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP103BMX250TCG requirements.
6.How does Aetrix verify that NCP103BMX250TCG is sourced from the original manufacturer or authorized distributors?
All NCP103BMX250TCG 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 NCP103BMX250TCG meets industry standards.
7.What is the process for return or replacement of NCP103BMX250TCG?
All NCP103BMX250TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCP103BMX250TCG, 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 NCP103BMX250TCG part is unused and in its original packaging.
Return procedure for NCP103BMX250TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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