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onsemi NCP2860DM277R2
- Part No.:
- NCP2860DM277R2
- Manufacturer:
- onsemi
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
NCP2860DM277R2.pdf
- Description:
- IC REG LINEAR 2.77V 300MA MICRO8
- Quantity:
- Payment:
- Shipping:
Inventory:4,809
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Product details
Overview
NCP2860DM277R2 from onsemi is a fixed-output, 2.77 V, 300 mA low-noise low-dropout linear regulator in Micro8 package, featuring 60 µVRMS output noise (10 Hz–100 kHz), 150 mV dropout at full load, and integrated FAULT indicator for audio amplifier power supply applications.
For engineers reviewing the NCP2860DM277R2 datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low noise performance, thermal shutdown with 30°C hysteresis, 10 nA shutdown current, and SET-pin-grounded configuration for precise 2.77 V output.
Technical Context
The NCP2860DM277R2 uses an internal P-channel MOSFET pass transistor enabling near-zero gate drive current and ultra-low quiescent current. Its transconductance error amplifier provides stable regulation without external compensation.
It integrates fault detection that monitors input-output differential voltage relative to load current, pulling the open-drain FAULT pin low when dropout conditions occur. Shutdown is controlled via a dedicated STDWN pin with hysteresis (0.63 V to 2.65 V threshold) and sub-100 nA bias current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.77 V ±40 mV over −25°C to +85°C; set by internal resistor divider with SET pin grounded. |
| Max Output Current | 300 mA continuous; short-circuit limited to 465 mA typical, with 220 mA startup current limiting. |
| Dropout Voltage | 150 mV at 300 mA load; enables operation from 3.0 V input down to 2.92 V while maintaining regulation. |
| Output Noise | 60 µVRMS (10 Hz–100 kHz); optimized for sensitive analog audio stages requiring clean DC bias. |
| PSRR | 60 dB at 1 kHz; suppresses ripple from noisy battery or switching supply inputs in portable systems. |
| Shutdown Current | 10 nA typical; preserves battery life in always-on or sleep-mode handheld devices. |
| Thermal Protection | Shuts down at 170°C junction temperature with 30°C hysteresis; prevents permanent damage during sustained overload. |
Pinout & Package
Package: Micro8 (Case 846A), Pb-free, surface-mount, 3.0 mm × 3.0 mm footprint with exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4 - OUT | Regulated output | Main power rail; requires ≥2.2 µF low-ESR capacitor for stability and noise filtering. |
| 2 - IN | Input supply | Accepts 3.0–6.0 V input; bypassed with 2.2 µF capacitor to suppress high-frequency noise. |
| 3 - GND | Ground reference | Common return path for all internal blocks; must be low-impedance connection to minimize noise coupling. |
| 5 - SET | Output voltage configuration | Must be grounded (≤0.2 V) for 2.77 V fixed output; floating or unconnected not allowed. |
| 6 - N.C. | No-connect | Internally unused; must remain unconnected and unbonded on PCB. |
| 7 - STDWN | Enable/disable control | Active-low logic input; <0.63 V = shutdown (10 nA IQ), >2.65 V = active; hysteresis prevents chatter. |
| 8 - FAULT | Fault status indicator | Open-drain output; pulled low during dropout or thermal fault; requires external pull-up to OUT or VIN. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise regulation | 60 µVRMS output noise enables direct powering of Class AB audio amplifiers without additional filtering. |
| Integrated fault reporting | Open-drain FAULT pin provides real-time dropout detection, simplifying system-level monitoring and diagnostics. |
| Ultra-low shutdown current | 10 nA quiescent draw extends battery runtime in cellular phones and handheld instruments during standby. |
| Thermal protection with hysteresis | 170°C trip point + 30°C hysteresis ensures safe recovery after overload without oscillation or latch-up. |
| Soft-start behavior | 60 µs typical startup time limits inrush current into large output capacitors, preventing input rail sag. |
Applications
| Cellular Phone Power Management | Handheld Audio Instrument Biasing |
|---|---|
|
Use Scenario: Supplying clean, stable bias to RF front-end LNA and baseband audio codec in dual-mode GSM/UMTS handsets. IC Role / Device Role / Timing Role: Primary low-noise LDO delivering 2.77 V to analog signal chain components with minimal PSRR degradation. Use Value: 60 µVRMS noise and 60 dB PSRR at 1 kHz prevent audible hiss and carrier leakage in receive path. |
Use Scenario: Powering op-amp-based microphone preamplifiers and ADC reference buffers in portable spectrum analyzers. IC Role / Device Role / Timing Role: Fixed-output LDO providing ultra-low-noise 2.77 V rail for precision analog front-end stages. Use Value: 150 mV dropout allows operation from partially discharged Li-ion cells (≥3.0 V), extending usable battery life. |
| Portable Medical Sensor Module | Industrial Handheld Data Logger |
|
Use Scenario: Regulating power to low-power ECG/EEG analog signal conditioners in battery-operated patient monitors. IC Role / Device Role / Timing Role: Safety-critical bias supply with thermal fault signaling via FAULT pin for system-level watchdog integration. Use Value: 170°C thermal shutdown + 30°C hysteresis prevents sensor drift or damage during extended field use in warm environments. |
Use Scenario: Supplying 2.77 V to microcontroller I/O banks and isolated RS-485 transceivers in ruggedized field data recorders. IC Role / Device Role / Timing Role: Robust, shutdown-capable LDO supporting scheduled deep-sleep modes with <10 nA quiescent current. Use Value: STDWN pin enables firmware-controlled power gating, reducing average system current by >99% during idle intervals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6210B277MR-G | 2.77 V fixed, 300 mA, 45 µVRMS noise, but no FAULT pin or thermal hysteresis; 250 mV dropout at 300 mA. | Lacks fault reporting and tighter thermal protection; suitable only where system-level monitoring replaces FAULT functionality. | Choose when lowest possible noise is critical and FAULT signaling is handled externally. |
| Diodes Inc. AP2204K-2.8TRG1 | 2.8 V nominal (±2%), 300 mA, 120 µVRMS noise, no FAULT, no thermal hysteresis, 350 mV dropout at 300 mA. | Higher noise and dropout; lacks both FAULT and thermal hysteresis; rated for industrial temp only (−40°C to +85°C). | Acceptable for cost-sensitive non-audio applications where 2.8 V tolerance and relaxed noise specs are acceptable. |
Compared with NCP2860DM277R2, the XC6210B277MR-G offers lower noise but sacrifices fault visibility and thermal safety margin, while the AP2204K-2.8TRG1 trades noise, dropout, and protection features for lower unit cost in less demanding applications.
Availability
NCP2860DM277R2 is available at Aetrix Electronics and suitable for cellular phone power management, handheld audio instrument biasing, portable medical sensor modules, and industrial handheld data loggers requiring stable component supply across production lifecycles.
Supply support for NCP2860DM277R2 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 (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient electronics, delivering silicon solutions for automotive, industrial, cloud, and consumer markets.
The NCP2860DM277R2 belongs to onsemi's precision analog LDO portfolio, designed specifically for noise-sensitive portable audio and battery-powered instrumentation requiring high PSRR and ultra-low quiescent current.
FAQ
What is the correct configuration for the SET pin on the NCP2860DM277R2?
The SET pin on the NCP2860DM277R2 must be grounded (≤0.2 V) to enable its fixed 2.77 V output. Leaving it floating or connecting it to any other voltage invalidates regulation and may cause instability. The internal resistor divider is factory-trimmed for this exact configuration, and no external resistors are required or recommended for the NCP2860DM277R2 variant.
Does the NCP2860DM277R2 require an external compensation capacitor?
No, the NCP2860DM277R2 does not require an external compensation capacitor. Its transconductance error amplifier and internal P-channel MOSFET pass element are designed for unconditional stability with standard 2.2 µF ceramic output capacitors (ESR < 0.5 Ω). Adding extra capacitance or altering ESR outside the specified range may degrade transient response or induce oscillation.
How does the FAULT pin function on the NCP2860DM277R2?
The FAULT pin on the NCP2860DM277R2 is an open-drain output that pulls low when the device detects dropout (insufficient input-output differential) or thermal fault. During normal operation or shutdown, it remains high-impedance. A pull-up resistor (typically 100 kΩ to OUT or VIN) is required to generate a valid logic-high signal; the pin sinks up to 2 mA when active.
What is the maximum input voltage rating for the NCP2860DM277R2?
The absolute maximum input voltage for the NCP2860DM277R2 is +6.0 V. However, the recommended operating range is 3.0 V to 6.0 V for reliable regulation at full 300 mA load. Operation below 3.0 V risks dropout-e.g., at 2.92 V input, the device cannot maintain 2.77 V output under 300 mA load due to its 150 mV dropout specification.
Can the NCP2860DM277R2 be used in automotive applications?
The NCP2860DM277R2 is specified for −25°C to +85°C ambient operation and is not AEC-Q200 qualified. While it functions within standard automotive cabin temperature ranges, onsemi does not certify or guarantee its reliability for automotive use. For automotive-grade deployment, consult onsemi's AEC-Q200-compliant LDO portfolio-such as the NCV8170 series-instead of the NCP2860DM277R2.
NCP2860DM277R2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 2.77V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.25V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 700 µA
- Current - Supply (Max):
- -
- PSRR:
- 60dB (1kHz)
- Control Features:
- Enable, Fault Output
- Protection Features:
- Over Temperature, Short Circuit, Soft Start
- Operating Temperature:
- -25°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
NCP2860DM277R2 FAQ
1.How can I place an order for NCP2860DM277R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP2860DM277R2 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 NCP2860DM277R2 reliable?
The price and inventory of NCP2860DM277R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP2860DM277R2 is usually 5 days.
3.What payment methods are accepted for NCP2860DM277R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP2860DM277R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP2860DM277R2?
NCP2860DM277R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP2860DM277R2 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 NCP2860DM277R2?
For technical support, including NCP2860DM277R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP2860DM277R2 requirements.
6.How does Aetrix verify that NCP2860DM277R2 is sourced from the original manufacturer or authorized distributors?
All NCP2860DM277R2 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 NCP2860DM277R2 meets industry standards.
7.What is the process for return or replacement of NCP2860DM277R2?
All NCP2860DM277R2 units undergo pre-shipment inspection (PSI). If there is an issue with NCP2860DM277R2, 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 NCP2860DM277R2 part is unused and in its original packaging.
Return procedure for NCP2860DM277R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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