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onsemi NCP103AMX300TCG
- Part No.:
- NCP103AMX300TCG
- Manufacturer:
- onsemi
- Package:
- 4-UDFN Exposed Pad
- Datasheet:
-
NCP103AMX300TCG.pdf
- Description:
- IC REG LINEAR 3V 150MA 4UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,455
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Product details
Overview
NCP103AMX300TCG from onsemi is a 150 mA CMOS low-dropout (LDO) regulator with fixed 3.0 V output, optimized for battery-powered portable electronics. It delivers ±2% output voltage accuracy at room temperature, 75 mV typical dropout at 150 mA load, and 75 dB PSRR at 1 kHz - enabling stable power delivery in noise-sensitive RF and analog subsystems of smartphones and wireless handsets.
For engineers reviewing the NCP103AMX300TCG datasheet, pinout, applications, or equivalent options, key selection criteria include its active output discharge function (enabled in "A"-suffix variants), ultra-low 50 µA typical quiescent current, thermal shutdown protection, and compatibility with 1 µF ceramic output capacitors in space-constrained uDFN4 1.0×1.0 mm packages.
Technical Context
The NCP103AMX300TCG integrates a PMOS pass transistor with dynamic quiescent current adjustment to minimize IQ across load conditions, including near-zero current in standby mode (0.1 µA typ). Its internal bandgap reference and error amplifier maintain tight regulation over −40°C to +85°C junction temperature.
It features an enable-controlled active output discharge path (100 Ω typical) that pulls VOUT to GND during shutdown - critical for preventing back-powering in multi-rail systems. Protection includes thermal shutdown (160°C trip, 20°C hysteresis) and current limiting (550 mA typ), with stability guaranteed using only 1 µF X5R/X7R ceramic output capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0 V ±2% at room temperature - ensures precise biasing for 3.0 V logic, RF front-ends, and sensor interfaces without external feedback. |
| Max Output Current | 150 mA continuous - sufficient to power baseband processors, Bluetooth transceivers, or small microcontrollers in portable devices. |
| Dropout Voltage | 72 mV typical at 150 mA - enables operation down to VIN = 3.072 V, extending battery runtime in single-cell Li-ion (3.0–4.2 V) applications. |
| Quiescent Current | 50 µA typical at no load - reduces standby power loss, supporting >1-year shelf life in always-on IoT sensors. |
| PSRR | 75 dB at 1 kHz - suppresses switching noise from adjacent DC/DC converters, preserving signal integrity in audio and RF signal chains. |
| Output Capacitor | Stable with ≥1 µF ceramic (X5R/X7R) - eliminates need for bulky tantalum or electrolytic capacitors, reducing PCB area and cost. |
| Enable Threshold | VEN_HI = 0.9 V, VEN_LO = 0.4 V - compatible with 1.8 V and 3.3 V GPIOs for clean, glitch-free power sequencing. |
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.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: OUT | Regulated output voltage node | Connect ≥1 µF ceramic capacitor directly to GND; supports active discharge via internal 100 Ω switch when EN is low. |
| 2: GND | Power ground reference | Primary return path for load current; exposed pad must be soldered to large GND copper plane for thermal and EMI performance. |
| 3: EN | Enable control input | Logic-high (>0.9 V) enables regulation; logic-low (<0.4 V) disables output and activates discharge; internal 300 nA pull-down ensures default-off state. |
| 4: IN | Input voltage supply | Accepts 1.7–5.5 V; requires local 1 µF ceramic capacitor to suppress high-frequency noise and limit inrush during load transients. |
Key Features
| Feature | Design Value |
|---|---|
| Active output discharge | 100 Ω internal discharge path pulls VOUT to GND within milliseconds upon disable - prevents floating outputs and back-powering in multi-supply systems. |
| Ultra-low quiescent current | 50 µA typical at no load, scaling dynamically with output current - extends battery life in always-on wearable and medical sensors. |
| High PSRR at 1 kHz | 75 dB rejection of input ripple - maintains clean 3.0 V rail for sensitive analog circuits even when sharing input with noisy buck converters. |
| Thermal shutdown with hysteresis | 160°C trip / 140°C reset - protects against sustained overload or poor heatsinking without oscillation or latch-up. |
| Stability with minimal capacitance | Guaranteed stable with 1 µF X7R ceramic output cap - avoids costly, large-footprint alternatives and simplifies layout. |
Applications
| Smartphone Baseband Power | Bluetooth LE Module Supply |
|---|---|
|
Use Scenario: Powers baseband processor core logic requiring tightly regulated 3.0 V with fast transient response during burst data transmission. IC Role / Device Role / Timing Role: Primary LDO delivering clean, low-noise 3.0 V rail; handles 1–150 mA dynamic loads with ≤30 mV load transient deviation. Use Value: Enables reliable 4G/5G modem operation by maintaining voltage within ±2% under rapid current steps, avoiding brownouts or resets. |
Use Scenario: Supplies 3.0 V to Bluetooth Low Energy SoCs in hearables and fitness trackers with aggressive sleep/wake cycles. IC Role / Device Role / Timing Role: Always-on LDO with 0.1 µA shutdown current and active discharge - ensures zero leakage during deep-sleep states. Use Value: Extends battery life beyond 12 months in coin-cell-powered devices by minimizing static power and eliminating residual VOUT hold-up. |
| Portable Medical Sensor Node | GPS Receiver Front-End |
|
Use Scenario: Powers analog front-end (AFE) and ADC in handheld pulse oximeters and glucose monitors. IC Role / Device Role / Timing Role: Low-noise 3.0 V source with 60 µVRMS output noise (10 Hz–100 kHz) - preserves signal-to-noise ratio in µV-level biomedical signals. Use Value: Eliminates need for additional filtering stages, reducing BOM count and board area while meeting IEC 60601 EMC requirements. |
Use Scenario: Provides ultra-stable 3.0 V supply to GPS RF ICs and crystal oscillator buffers in navigation modules. IC Role / Device Role / Timing Role: High-PSRR LDO rejecting switching noise from PMU DC/DC converters - prevents phase noise degradation in 1.575 GHz L1 band reception. Use Value: Improves time-to-first-fix (TTFF) and position accuracy by maintaining oscillator stability and minimizing carrier phase jitter. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3002E/MB | 300 mA rating, 1.6 µA IQ, no active discharge, SOT-23-5 package | Larger footprint, higher max current, but lacks discharge function and tighter accuracy (±2% vs ±1%) | Choose for higher current headroom where discharge is unnecessary and board space allows SOT-23. |
| Torex XC6206P302MR-G | 150 mA, 1 µA IQ, no enable pin, SOT-25 package | No EN control or active discharge; fixed 3.0 V output with ±2% accuracy; lower IQ but no sequencing capability | Choose for ultra-low-power always-on rails where enable control and discharge are not required. |
Compared with MCP1700T-3002E/MB and XC6206P302MR-G, the NCP103AMX300TCG uniquely combines 3.0 V precision regulation, active output discharge, and uDFN4 miniaturization - making it optimal for compact, multi-rail portable designs requiring controlled power-down behavior.
Availability
NCP103AMX300TCG is available at Aetrix Electronics and suitable for smartphone power management, Bluetooth LE module design, and portable medical equipment requiring stable component supply with full lifecycle support.
Supply support for NCP103AMX300TCG 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 part of onsemi's precision analog portfolio, designed specifically for ultra-low-power, space-constrained battery-operated devices demanding high PSRR, low dropout, and robust protection features.
FAQ
What is the output voltage tolerance of the NCP103AMX300TCG over temperature?
The NCP103AMX300TCG provides ±2% output voltage accuracy across −40°C to +85°C junction temperature. At room temperature (25°C), it achieves tighter regulation (±1% for VOUT > 2.0 V per datasheet Table 1), and its output drift remains within spec due to integrated bandgap reference and trimming - ensuring consistent 3.0 V operation in consumer and medical environments.
Does the NCP103AMX300TCG support active output discharge, and how does it work?
Yes, the NCP103AMX300TCG includes active output discharge: when the EN pin is driven below 0.4 V, an internal 100 Ω switch connects OUT to GND, discharging the output capacitor rapidly. This feature prevents back-powering of upstream circuitry and ensures clean power-down sequencing - confirmed in the datasheet's PIN FUNCTION DESCRIPTION and APPLICATIONS INFORMATION sections.
What minimum output capacitance is required for stability with the NCP103AMX300TCG?
The NCP103AMX300TCG is stable with a minimum 1 µF ceramic capacitor (X5R or X7R dielectric) placed close to the OUT pin. The datasheet explicitly states stability down to 0.22 µF effective capacitance (accounting for DC bias and temperature effects), but 1 µF is the recommended value to ensure margin across all operating conditions and capacitor vendors.
Can the NCP103AMX300TCG operate from a single-cell Li-ion battery?
Yes - the NCP103AMX300TCG operates from 1.7 V to 5.5 V input and has a typical dropout of 72 mV at 150 mA. With a nominal 3.0 V output, it functions reliably down to VIN ≈ 3.072 V, covering the usable range of a discharged single-cell Li-ion battery (≈3.0–4.2 V), making it ideal for direct battery connection in portable electronics.
How does the NCP103AMX300TCG protect against thermal overload?
The NCP103AMX300TCG incorporates thermal shutdown with a 160°C trip point and 20°C hysteresis (reset at ~140°C). When junction temperature exceeds 160°C, the regulator disables the pass transistor and holds shutdown until temperature falls below 140°C - preventing permanent damage during sustained overload or inadequate PCB heatsinking, as verified in Electrical Characteristics and Applications Information.
NCP103AMX300TCG 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):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.12V @ 150mA
- 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)
NCP103AMX300TCG FAQ
1.How can I place an order for NCP103AMX300TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP103AMX300TCG 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 NCP103AMX300TCG reliable?
The price and inventory of NCP103AMX300TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP103AMX300TCG is usually 5 days.
3.What payment methods are accepted for NCP103AMX300TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP103AMX300TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP103AMX300TCG?
NCP103AMX300TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP103AMX300TCG 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 NCP103AMX300TCG?
For technical support, including NCP103AMX300TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP103AMX300TCG requirements.
6.How does Aetrix verify that NCP103AMX300TCG is sourced from the original manufacturer or authorized distributors?
All NCP103AMX300TCG 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 NCP103AMX300TCG meets industry standards.
7.What is the process for return or replacement of NCP103AMX300TCG?
All NCP103AMX300TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCP103AMX300TCG, 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 NCP103AMX300TCG part is unused and in its original packaging.
Return procedure for NCP103AMX300TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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