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onsemi NCP4569DM28R2
- Part No.:
- NCP4569DM28R2
- Manufacturer:
- onsemi
- Package:
- -
- Datasheet:
-
NCP4569DM28R2.pdf
- Description:
- IC REG LINEAR FIXED LDO REG
- Quantity:
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- Shipping:
Inventory:30,000
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Product details
Overview
NCP4569DM28R2 from onsemi is a fixed 2.8 V, 300 mA CMOS low-dropout regulator with shutdown control and reference bypass input. It delivers ±0.5% output voltage accuracy, 240 mV typical dropout at full load, and ultra-low 50 µA quiescent current - enabling long battery life in portable instrumentation and medical devices.
For engineers reviewing the NCP4569DM28R2 datasheet, pinout, applications, or equivalent options, key selection criteria include guaranteed 300 mA output under 2.8 V regulation, 0.05 µA shutdown current, 260 nV/√Hz output noise (with 470 pF bypass), thermal/overcurrent protection, and Micro-8 package compatibility with 1.0 µF minimum output capacitance.
Technical Context
The NCP4569DM28R2 uses a CMOS pass transistor architecture to achieve near-constant 50 µA supply current across 0.1 µA–300 mA load range - unlike bipolar LDOs whose quiescent current rises with load. Its internal bandgap reference is buffered via the Bypass pin, allowing external 470 pF capacitor connection to reduce reference noise and lower output noise to 260 nV/√Hz.
Shutdown is implemented via TTL/CMOS-compatible SHDN pin (VIH ≥ 45% VIN, VIL ≤ 15% VIN), forcing VOUT to 0 V and reducing supply current to 0.05 µA. Protection includes foldback overcurrent limiting and thermal shutdown at 150°C, with automatic recovery at ~140°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8 V ±0.5% (typical) - ensures stable core/bias rail for 2.8 V logic or analog circuitry without external feedback. |
| Max Output Current | 300 mA - supports moderate-power microcontrollers, sensors, or RF front-ends without derating at TA ≤ 85°C. |
| Dropout Voltage | 240 mV @ 300 mA - enables operation from 3.04 V input (e.g., single Li-ion cell post-protection) while maintaining regulation. |
| Quiescent Current | 50 µA @ full load - 20–60× lower than legacy bipolar LDOs, critical for battery runtime in always-on monitoring systems. |
| Shutdown Current | 0.05 µA (typical) - reduces standby power to negligible levels in sleep-mode applications like pagers or digital cameras. |
| Output Noise | 260 nV/√Hz @ 1 kHz (with 470 pF on Bypass) - meets low-noise requirements for ADC references or RF synthesizer supplies. |
| PSRR | 60 dB @ 1 kHz - suppresses switching noise from upstream SMPS when used as linear post-regulator. |
Pinout & Package
Package: Micro-8 (Case 846A), 3.0 × 3.0 × 0.9 mm body, surface-mount, lead-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT | Regulated 2.8 V output - connects directly to load; requires ≥1.0 µF ceramic capacitor to GND for stability. |
| 2, 3, 6 | NC | No-connect pins - must remain unconnected; no internal bonding or function. |
| 4 | GND | Power ground reference - low-impedance return path for load and internal circuits; ties to PCB ground plane. |
| 5 | Bypass | Reference bypass input - connect 470 pF capacitor to GND to reduce output noise by filtering internal bandgap reference. |
| 7 | SHDN | Active-high shutdown control - drive ≥45% VIN to enable; ≤15% VIN to disable (VOUT = 0 V, ISS = 0.05 µA). |
| 8 | VIN | Unregulated input - accepts 2.8 V to 6.0 V; requires local 1.0 µF decoupling if >10" wire length or battery source. |
Key Features
| Feature | Design Value |
|---|---|
| Zero ground current at light load | Maintains 50 µA supply current down to 0.1 µA load - preserves battery capacity in RTC or CMOS RAM backup. |
| Ultra-low noise with bypass | 260 nV/√Hz output noise achieved only when 470 pF capacitor is placed on Bypass pin - essential for precision analog rails. |
| Fast transient response | Stable with 1.0 µF output capacitor and ESR ≤ 5 Ω - recovers within microseconds from 50–100 mA load steps. |
| Thermal + overcurrent protection | Shuts down at 150°C junction temperature and limits short-circuit current to 550–650 mA - prevents damage during fault conditions. |
| Micro-8 space-saving footprint | 3.0 × 3.0 mm outline with 0.65 mm pitch - fits high-density portable PCBs where board area is constrained. |
Applications
| Digital Camera Power Rail | Portable Medical Sensor Supply |
|---|---|
|
Use Scenario: Powers image sensor and ISP core in compact digital cameras operating from single-cell Li-ion (3.0–4.2 V). IC Role / Device Role / Timing Role: Primary 2.8 V LDO delivering clean, regulated voltage to noise-sensitive imaging circuitry. Use Value: 240 mV dropout allows full 2.8 V output down to 3.04 V input; 260 nV/√Hz noise (with bypass) prevents image artifacts. |
Use Scenario: Supplies analog front-end and low-power MCU in handheld blood glucose meters or pulse oximeters. IC Role / Device Role / Timing Role: Precision 2.8 V bias rail for ADC reference and op-amp stages requiring stable, low-drift voltage. Use Value: ±0.5% output accuracy and 40 ppm/°C tempco ensure measurement repeatability across –20°C to +70°C operating range. |
| GSM Phone Baseband Core | Linear Post-Regulator for SMPS |
|
Use Scenario: Provides 2.8 V core voltage to baseband processor in GSM/PHS handsets during active call mode. IC Role / Device Role / Timing Role: Load-switched LDO activated via SHDN signal from power management IC during high-current bursts. Use Value: 0.05 µA shutdown current extends standby time; fast load transient response maintains voltage during burst transmission. |
Use Scenario: Filters ripple from 3.3 V buck converter output to generate ultra-clean 2.8 V rail for RF transceiver PLLs. IC Role / Device Role / Timing Role: Low-noise linear post-regulator rejecting switcher noise above 60 dB at 1 kHz. Use Value: 60 dB PSRR and bypass-enabled 260 nV/√Hz noise meet stringent spectral purity requirements for cellular RF sections. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A0528DBVR | 2.8 V, 200 mA, 25 µA IQ, 170 mV dropout @ 200 mA - lower IQ but 100 mA less max output. | Preferred for ultra-low-IQ wearables; insufficient for 300 mA peak loads like camera ISPs. | Select NCP4569DM28R2 when ≥300 mA output and 260 nV/√Hz noise (with bypass) are required. |
| MCP1700T-2802E/MB | 2.8 V, 250 mA, 1.6 µA IQ, 600 mV dropout @ 250 mA - ultra-low IQ but higher dropout and lower current. | Suitable for micropower sensor nodes; cannot sustain 300 mA or low-input-voltage operation. | Choose NCP4569DM28R2 for applications needing both high current and low dropout from marginal input sources. |
Compared with TPS7A0528DBVR and MCP1700T-2802E/MB, the NCP4569DM28R2 uniquely balances 300 mA capability, 240 mV dropout, and bypass-tuned low noise - making it optimal for portable imaging and RF subsystems where performance trade-offs are unacceptable.
Availability
NCP4569DM28R2 is available at Aetrix Electronics and suitable for battery-operated systems, portable medical instruments, and digital camera power management requiring stable component supply and long-term lifecycle support.
Supply support for NCP4569DM28R2 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, with leadership in power management, analog, and sensing technologies.
The NCP4569DM28R2 belongs to onsemi's precision CMOS LDO family, designed specifically for battery-powered portable equipment demanding high accuracy, ultra-low quiescent current, and robust protection in space-constrained Micro-8 packages.
FAQ
What is the maximum input voltage rating for the NCP4569DM28R2?
The NCP4569DM28R2 has an absolute maximum input voltage of 6.5 V. Its recommended operating input voltage range is 2.8 V to 6.0 V, ensuring reliable regulation of the 2.8 V output across this span. Exceeding 6.5 V risks permanent damage per the Absolute Maximum Ratings table in the datasheet.
Does the NCP4569DM28R2 require an external capacitor on the Bypass pin to function?
No, the NCP4569DM28R2 operates fully functional without any capacitor on the Bypass pin. However, connecting a 470 pF capacitor from Bypass to GND reduces output noise from unspecified baseline to 260 nV/√Hz - a design choice for noise-sensitive applications, not a functional requirement.
What is the thermal shutdown behavior of the NCP4569DM28R2?
The NCP4569DM28R2 activates thermal shutdown when junction temperature exceeds 150°C, disabling output and reducing power dissipation. It automatically resumes normal operation once die temperature falls to approximately 140°C - providing self-protecting operation during sustained overload or poor heatsinking.
Can the NCP4569DM28R2 be used with ceramic output capacitors?
Yes, the NCP4569DM28R2 is stable with ceramic output capacitors ≥1.0 µF and effective series resistance (ESR) ≤5.0 Ω. The datasheet explicitly recommends ceramic, aluminum electrolytic, or tantalum types - with solid tantalum preferred below –25°C due to aluminum freeze-out.
How does the shutdown functionality affect output voltage and supply current in the NCP4569DM28R2?
When the SHDN pin is driven low (≤15% VIN), the NCP4569DM28R2 disables its pass element: VOUT drops to 0 V, and supply current falls to 0.05 µA (typical). This state eliminates load current draw and minimizes system standby power - critical for battery longevity in intermittent-use devices.
NCP4569DM28R2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- -
- Output Type:
- -
- Number of Regulators:
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- -
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
NCP4569DM28R2 FAQ
1.How can I place an order for NCP4569DM28R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP4569DM28R2 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 NCP4569DM28R2 reliable?
The price and inventory of NCP4569DM28R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP4569DM28R2 is usually 5 days.
3.What payment methods are accepted for NCP4569DM28R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP4569DM28R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP4569DM28R2?
NCP4569DM28R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP4569DM28R2 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 NCP4569DM28R2?
For technical support, including NCP4569DM28R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP4569DM28R2 requirements.
6.How does Aetrix verify that NCP4569DM28R2 is sourced from the original manufacturer or authorized distributors?
All NCP4569DM28R2 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 NCP4569DM28R2 meets industry standards.
7.What is the process for return or replacement of NCP4569DM28R2?
All NCP4569DM28R2 units undergo pre-shipment inspection (PSI). If there is an issue with NCP4569DM28R2, 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 NCP4569DM28R2 part is unused and in its original packaging.
Return procedure for NCP4569DM28R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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