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onsemi NCP707AMX185TCG
- Part No.:
- NCP707AMX185TCG
- Manufacturer:
- onsemi
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
NCP707AMX185TCG.pdf
- Description:
- IC REG LINEAR 1.85V 200MA 4XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,015
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Product details
Overview
NCP707AMX185TCG from onsemi is a 200 mA low-dropout (LDO) voltage regulator with fixed 1.85 V output, ultra-low 25 µA quiescent current, 22 µVRMS output noise (100 Hz–100 kHz), and 218 mV typical dropout at 200 mA. It features active output discharge (1.2 kΩ), thermal shutdown, and current limiting - designed for noise-sensitive, space-constrained battery-powered systems such as GPS modules and portable medical devices.
For engineers reviewing the NCP707AMX185TCG datasheet, pinout, applications, or equivalent options, key selection criteria include its XDFN-4 1.0×1.0 mm package, ±2% output accuracy over load/line/temperature, EN pin logic control with 0.9 V turn-on threshold, and stability with only 1 µF ceramic output capacitor.
Technical Context
The NCP707AMX185TCG uses a PMOS pass transistor architecture enabling reverse-current blocking and low dropout performance. Its adaptive quiescent current circuitry dynamically reduces ground current to 25 µA at no-load while maintaining regulation, critical for extended battery life in always-on portable electronics.
It integrates an internal soft-start, active output discharge (enabled only in "A" and "C" suffix variants), and robust protection including thermal shutdown (160°C trip, 20°C hysteresis) and foldback current limiting (379 mA typ). The EN pin controls both regulation and discharge activation via precise 0.4 V low-threshold and 0.9 V high-threshold logic levels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.85 V ±2% over −40°C to +125°C, load 0–200 mA, line VIN = VOUT+0.5 V to 5.5 V |
| Quiescent Current | 25 µA typical at no-load; enables >1-year battery life in low-duty-cycle IoT sensors |
| Dropout Voltage | 218 mV typical at 200 mA output; allows operation down to VIN = 2.068 V while sustaining 1.85 V |
| Output Noise | 22 µVRMS (100 Hz–100 kHz); suitable for RF power supply rails and precision analog front-ends |
| PSRR | 70 dB at 1 kHz; suppresses switching noise from upstream DC-DC converters |
| Enable Threshold | VEN_HI = 0.9 V, VEN_LO = 0.4 V; provides noise-immune digital control with 56 mV hysteresis |
| Active Discharge | 1.2 kΩ pull-down when disabled; discharges output to GND within ~2 ms for system-level sequencing |
Pinout & Package
XDFN-4 1.0 mm × 1.0 mm, 0.4 mm pitch, exposed thermal pad (EPAD) connected to GND. Compact footprint supports high-density PCB layouts in wearables and handhelds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Regulated output | Delivers stable 1.85 V; requires ≥1 µF ceramic capacitor to GND for stability |
| 2 - GND | Power ground | Reference node for regulation and EN logic; EPAD must be soldered to large GND copper plane |
| 3 - EN | Enable control input | Logic-high (>0.9 V) enables regulator; logic-low (<0.4 V) disables and activates discharge |
| 4 - IN | Input supply | Accepts 1.8–5.5 V; requires ≥1 µF ceramic capacitor to GND near pin |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IQ | 25 µA no-load current extends battery runtime in always-on sensor nodes |
| Low-noise regulation | 22 µVRMS noise enables clean power for ADCs, RF transceivers, and PLLs |
| Active output discharge | 1.2 kΩ internal pull-down ensures fast, controlled VOUT ramp-down during shutdown |
| Stable with minimal capacitance | Guaranteed stability with 1 µF ceramic COUT - reduces BOM count and board area |
| Robust protection suite | Thermal shutdown (160°C), current limit (379 mA), and short-circuit immunity prevent field failures |
Applications
| GPS Module Power Supply | Wearable Heart Rate Monitor |
|---|---|
Use Scenario: Powers GNSS baseband IC and RF frontend in compact handheld GPS receivers. IC Role / Device Role / Timing Role: Primary 1.85 V LDO supplying sensitive analog/RF circuitry requiring ultra-low noise and tight regulation. Use Value: 22 µVRMS noise prevents degradation of carrier-to-noise ratio (C/N₀); 218 mV dropout enables operation from single-cell Li-ion (3.0 V min). | Use Scenario: Supplies optical sensor and analog front-end in wrist-worn PPG health monitors. IC Role / Device Role / Timing Role: Low-IQ bias rail for photodiode amplifier and ADC, activated only during measurement bursts. Use Value: 25 µA quiescent current minimizes standby drain; active discharge ensures rapid signal settling between measurements. |
| Bluetooth LE Audio Earbud SoC Core | Portable ECG Diagnostic Device |
Use Scenario: Provides regulated 1.85 V core voltage to Bluetooth 5.3 SoC during audio streaming and sensor fusion. IC Role / Device Role / Timing Role: High-PSRR (70 dB @ 1 kHz) LDO filtering switch-mode converter ripple feeding SoC digital core. Use Value: PSRR suppresses 2 MHz DC-DC switching noise, preventing bit errors and audio artifacts in real-time streaming. | Use Scenario: Powers instrumentation amplifier and 24-bit sigma-delta ADC in handheld ECG units. IC Role / Device Role / Timing Role: Precision analog rail where ±2% output accuracy and low drift ensure diagnostic-grade signal fidelity. Use Value: ±2% tolerance maintained across −40°C to +85°C enables clinical-grade measurement without calibration drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1802E/TT | 1.8 V fixed output, 1.8 µA IQ, no active discharge, SOT-23-5 package | Lacks discharge function; unsuitable for strict power sequencing; higher dropout (600 mV @ 250 mA) | Select when lowest possible IQ dominates and discharge is unnecessary |
| TLC7603IDBVR | 1.8 V output, 35 µA IQ, 30 µVRMS noise, no discharge, SOT-23-5 | Higher noise and IQ; no thermal shutdown; requires ≥2.2 µF COUT for stability | Choose only if TI's qualification pedigree is mandatory and layout allows larger output cap |
Compared with MCP1700T-1802E/TT and TLC7603IDBVR, the NCP707AMX185TCG delivers tighter output accuracy (±2% vs. ±3%), lower dropout (218 mV vs. ≥600 mV), integrated active discharge for sequencing, and guaranteed stability with 1 µF COUT - making it optimal for miniaturized, battery-critical medical and navigation systems.
Availability
NCP707AMX185TCG is available at Aetrix Electronics and suitable for GPS receivers, wearable biosensors, Bluetooth LE audio earbuds, and portable ECG diagnostics requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for NCP707AMX185TCG 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, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP707 series is part of onsemi's precision analog portfolio, engineered specifically for ultra-low-power, noise-sensitive portable electronics where battery life, small form factor, and signal integrity are non-negotiable.
FAQ
What is the maximum input voltage rating for the NCP707AMX185TCG?
The NCP707AMX185TCG has an absolute maximum input voltage of 6 V. Operation above 5.5 V is not recommended per datasheet specifications, and sustained exposure beyond 6 V may cause permanent damage. For reliable operation, VIN should remain within 1.8 V to 5.5 V, with dropout headroom of at least 218 mV at full 200 mA load to maintain 1.85 V output.
Does the NCP707AMX185TCG require an external resistor for enable functionality?
No, the NCP707AMX185TCG does not require an external resistor for enable functionality. Its EN pin features an internal 180 nA pull-down current source, ensuring default disable state when left floating. A direct connection to IN (for always-on) or a clean logic signal (0.4 V low / 0.9 V high) suffices - no external biasing components are needed.
Can the NCP707AMX185TCG be used with tantalum output capacitors?
No, the NCP707AMX185TCG is not recommended for use with tantalum output capacitors. Its stability is guaranteed only with ceramic capacitors (X5R/X7R) having ESR < 700 mΩ. Tantalum capacitors exhibit high and temperature-dependent ESR, which can destabilize the control loop and cause oscillation - especially at low temperatures - risking system malfunction.
What is the purpose of the exposed pad (EPAD) on the NCP707AMX185TCG package?
The exposed pad (EPAD) on the NCP707AMX185TCG is electrically connected to GND and serves as the primary thermal path. It must be soldered directly to a large PCB GND copper plane to achieve the specified θJA of 250°C/W. Omitting EPAD connection increases junction temperature rise by >40°C under 200 mA load, risking thermal shutdown and reduced reliability.
How does the active output discharge function operate in the NCP707AMX185TCG?
When the EN pin voltage falls below 0.4 V, the NCP707AMX185TCG disables regulation and turns on an internal 1.2 kΩ discharge transistor between OUT and GND. This actively pulls the output voltage to ground within ~2 ms (typical), preventing floating rails and enabling safe, sequenced power-down in multi-rail systems - a feature absent in standard LDOs and critical for data integrity in portable medical devices.
NCP707AMX185TCG 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):
- 1.85V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.37V @ 200mA
- Current - Output:
- 200mA
- Current - Quiescent (Iq):
- 35 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-XDFN (1x1)
NCP707AMX185TCG FAQ
1.How can I place an order for NCP707AMX185TCG through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP707AMX185TCG 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 NCP707AMX185TCG reliable?
The price and inventory of NCP707AMX185TCG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP707AMX185TCG is usually 5 days.
3.What payment methods are accepted for NCP707AMX185TCG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP707AMX185TCG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP707AMX185TCG?
NCP707AMX185TCG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP707AMX185TCG 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 NCP707AMX185TCG?
For technical support, including NCP707AMX185TCG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP707AMX185TCG requirements.
6.How does Aetrix verify that NCP707AMX185TCG is sourced from the original manufacturer or authorized distributors?
All NCP707AMX185TCG 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 NCP707AMX185TCG meets industry standards.
7.What is the process for return or replacement of NCP707AMX185TCG?
All NCP707AMX185TCG units undergo pre-shipment inspection (PSI). If there is an issue with NCP707AMX185TCG, 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 NCP707AMX185TCG part is unused and in its original packaging.
Return procedure for NCP707AMX185TCG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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