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onsemi NCP3064BDR2G
- Part No.:
- NCP3064BDR2G
- Manufacturer:
- onsemi
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
NCP3064BDR2G.pdf
- Description:
- IC REG BUCK BOOST ADJ 1.5A 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,980
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Product details
Overview
NCP3064BDR2G from onsemi is a monolithic DC-DC switching regulator IC designed for step-down (buck), step-up (boost), and voltage-inverting converter topologies. It integrates a 1.5 A Darlington output switch, 150 kHz oscillator, precision 1.25 V reference (±1.5%), cycle-by-cycle current limiting, and logic-level ON/OFF shutdown control. It operates from 3.0 V to 40 V input and supports high-power LED lighting and battery charger applications.
For engineers reviewing the NCP3064BDR2G datasheet, pinout, applications, or equivalent options, key selection considerations include its 1.5 A switch current rating, 100 µA standby current, SOIC-8 package thermal performance (RJA = 180 °C/W), adjustable output voltage capability, and automotive-grade temperature range (−40 °C to +125 °C).
Technical Context
The NCP3064BDR2G implements a hysteretic, gated-oscillator topology with internal temperature-compensated 1.25 V reference and comparator-based feedback control. Its oscillator frequency (110–190 kHz) is set by an external timing capacitor (CT) and features a fixed 1:6 charge/discharge current ratio.
Current limiting is achieved via peak-sense comparator monitoring voltage across an external sense resistor (RSC), with a nominal 200 mV threshold. Thermal shutdown activates at 160 °C with 10 °C hysteresis, and the Darlington output stage delivers ≤1.3 V VSWCE at 1.0 A and 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0 V to 40 V - supports wide-input industrial and automotive power rails without pre-regulation. |
| Switch Current Rating | 1.5 A - enables direct drive of medium-power converters without external MOSFETs in many buck/boost designs. |
| Oscillator Frequency | 150 kHz typical (110–190 kHz range) - balances efficiency, EMI, and passive component size for cost-sensitive applications. |
| Reference Voltage Accuracy | ±1.5% over −40 °C to +125 °C - ensures stable output regulation across full automotive temperature range. |
| Standby Quiescent Current | 100 µA max at −40 °C to +125 °C - enables low-power shutdown mode suitable for battery-backed systems. |
| Current Sense Threshold | 200 mV ±35 mV - defines peak switch current limit; sets RSC = 0.20 Ω for 1.0 A nominal limit. |
| Thermal Shutdown Threshold | 160 °C with 10 °C hysteresis - protects against sustained overload or poor heatsinking without latch-up. |
Pinout & Package
Package: SOIC-8 (Case 751-07), Pb-free, with exposed pad tied to GND per datasheet Figure 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Switch Collector | Darlington transistor collector | High-side switch node; connects to inductor/diode in buck/boost/inverting topologies. |
| 2 - Switch Emitter | Darlington transistor emitter | Return path for switch current; referenced to GND in standard configurations. |
| 3 - Timing Capacitor | Oscillator timing input | Controls switching frequency via external CT capacitor (e.g., 2.2 nF → 150 kHz). |
| 4 - GND | Ground reference | Common return for all internal circuits; must be low-impedance and tied to exposed pad. |
| 5 - Comparator Inverting Input | Feedback voltage input | Connects to resistor divider from VOUT; regulates output by comparing to 1.25 V reference. |
| 6 - VCC | Power supply input | Supplies internal circuitry; accepts 3.0–40 V; bypass with ≥1 µF ceramic capacitor. |
| 7 - Ipk Sense | Peak current sense input | Monitors voltage drop across RSC to enforce cycle-by-cycle current limit at ~200 mV. |
| 8 - ON/OFF | Shutdown control input | Logic-level input: <1.0 V (or floating) disables switching; >2.4 V enables operation. |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable Output Topology Support | Enables buck, boost, and inverting configurations with minimal external components - reduces BOM count and design complexity. |
| Internal Thermal Shutdown | 160 °C trip with 10 °C hysteresis - prevents permanent damage during transient overloads without requiring external protection circuitry. |
| Logic-Level ON/OFF Control | Compatible with 3.3 V/5 V microcontrollers; draws only 1 µA in OFF state - simplifies system-level power sequencing. |
| Precision Reference | 1.25 V ±1.5% over full temperature range - eliminates need for external trimming in most applications requiring ±3–5% output accuracy. |
| Cycle-by-Cycle Current Limiting | Real-time peak-current enforcement via dedicated Ipk comparator - ensures robust short-circuit protection without delay. |
Applications
| LED Driver Power Supply | Battery Charger Controller |
|---|---|
|
Use Scenario: Constant-current driver for high-brightness white LEDs in automotive interior lighting or portable flashlights. IC Role / Device Role / Timing Role: Regulates output current via feedback loop; switches at 150 kHz to minimize inductor size while maintaining low ripple. Use Value: Delivers up to 1.5 A output with <10 mV load regulation and supports input down to 3.0 V - ideal for single-cell Li-ion or 12 V vehicle systems. |
Use Scenario: Standalone CC/CV charger for 2S Li-ion or lead-acid batteries in portable tools or UPS units. IC Role / Device Role / Timing Role: Implements programmable constant-current stage using Ipk sense and constant-voltage regulation via FB pin. Use Value: Achieves 82% efficiency at 3.3 V/2 A output (with external PMOS) and maintains ±1.5% reference accuracy across −40 °C to +125 °C - ensures reliable charging under extreme conditions. |
| Industrial DC-DC Converter | Inverting Rail Generator |
|
Use Scenario: Point-of-load (POL) converter generating 5 V or 3.3 V from unregulated 12–24 V factory bus. IC Role / Device Role / Timing Role: Functions as synchronous buck controller driving external FETs; uses ON/OFF pin for remote enable/disable. Use Value: Supports 40 V max input and 1.5 A switch current - accommodates brown-out conditions and transient surges common in industrial environments. |
Use Scenario: Generating negative supply (e.g., −5 V or −12 V) from positive rail for op-amp biasing or RS-232 interface ICs. IC Role / Device Role / Timing Role: Configured in inverting topology; uses internal Darlington switch and external diode/inductor to invert polarity. Use Value: Requires no additional ICs beyond passives; achieves <85 mVpp output ripple at 800 mA load - meets analog signal integrity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar switching regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2574N-5.0 | Fixed 5.0 V output; 0.5 A switch current; 52 kHz switching frequency; no ON/OFF pin. | Limited to fixed-output buck only; lower current and frequency restrict efficiency and component size reduction. | Select when fixed 5 V output suffices and board space allows larger inductors/capacitors. |
| MP1584EN-LF-Z | 4.5–28 V input; 3 A switch; 1.5 MHz frequency; integrated compensation; requires external feedback resistors. | Higher frequency enables smaller magnetics; lacks automotive temp grade (−40 °C to +125 °C) and built-in thermal hysteresis. | Prefer for compact, high-efficiency buck designs where extended temperature qualification is not required. |
Compared with LM2574N-5.0 and MP1584EN-LF-Z, the NCP3064BDR2G uniquely combines automotive-grade temperature operation, logic-level shutdown, and multi-topology flexibility in a cost-optimized SOIC-8 package - making it optimal for ruggedized, field-deployable power supplies where reliability and configurability are critical.
Availability
NCP3064BDR2G is available at Aetrix Electronics and suitable for industrial motor drives, automotive body electronics, and high-power LED lighting systems requiring stable component supply and long-term manufacturability.
Supply support for NCP3064BDR2G 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 for automotive, industrial, cloud, and IoT applications.
The NCP3064BDR2G belongs to onsemi's legacy monolithic DC-DC converter family, engineered for cost-sensitive, high-reliability power conversion in harsh environments - emphasizing simplicity, thermal robustness, and broad topology support.
FAQ
What is the maximum input voltage rating for the NCP3064BDR2G?
The NCP3064BDR2G supports an absolute maximum VCC (Pin 6) of 42 V and Darlington switch collector-to-emitter voltage (VSWCE) of 42 V. Its recommended operating input range is 3.0 V to 40 V. Exceeding 42 V risks permanent damage, as confirmed in the Maximum Ratings table on page 3 of the datasheet. The NCP3064BDR2G must be used with appropriate input filtering and transient suppression in 24 V or 36 V industrial systems.
Does the NCP3064BDR2G support voltage-inverting configurations?
Yes, the NCP3064BDR2G explicitly supports voltage-inverting (buck-boost inverter) topologies, as documented in Figures 1–4, Section 9 (Applications), and Figure 15 (Design Equations) of the datasheet. Its internal Darlington switch and flexible feedback architecture allow direct implementation of inverting converters with only external inductor, diode, and capacitors - no additional ICs required. The NCP3064BDR2G achieves this without modification to its pinout or internal circuitry.
What is the thermal resistance of the NCP3064BDR2G in SOIC-8 package?
The NCP3064BDR2G in SOIC-8 (Case 751-07) has a junction-to-air thermal resistance (RJA) of 180 °C/W and junction-to-case (RJC) of 45 °C/W, measured with 1 oz copper and 1 in² copper area (Note 5, page 3). These values assume proper PCB layout with GND-connected exposed pad. Derating is required above 70 °C ambient to maintain TJ ≤ 150 °C, especially at full 1.5 A load.
How does the ON/OFF pin function on the NCP3064BDR2G?
The ON/OFF pin (Pin 8) provides logic-level shutdown: pulling it below 1.0 V (or leaving it floating) disables switching and reduces quiescent current to ≤100 µA; applying >2.4 V enables normal operation. It tolerates up to 25 V and draws only 1 µA in OFF state. This feature allows direct interfacing with microcontrollers and supports PWM dimming or system-level power gating. The NCP3064BDR2G datasheet confirms these thresholds across −40 °C to +125 °C.
Is the NCP3064BDR2G qualified for automotive applications?
Yes - the "B" suffix in NCP3064BDR2G denotes the automotive-grade variant, specified for −40 °C to +125 °C operating junction temperature (page 3, Electrical Characteristics note). It shares the NCV3064 automotive qualification path, including AEC-Q100 stress testing (HBM 2000 V, MM 200 V) and enhanced process controls. While not branded NCV, the NCP3064BDR2G is explicitly intended for automotive and other high-reliability applications requiring extended temperature operation.
NCP3064BDR2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up, Step-Down
- Output Configuration:
- Positive or Negative
- Topology:
- Buck, Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 1.25V
- Voltage - Output (Max):
- 40V
- Current - Output:
- 1.5A (Switch)
- Frequency - Switching:
- 150kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
NCP3064BDR2G FAQ
1.How can I place an order for NCP3064BDR2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP3064BDR2G 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 NCP3064BDR2G reliable?
The price and inventory of NCP3064BDR2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP3064BDR2G is usually 5 days.
3.What payment methods are accepted for NCP3064BDR2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP3064BDR2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP3064BDR2G?
NCP3064BDR2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP3064BDR2G 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 NCP3064BDR2G?
For technical support, including NCP3064BDR2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP3064BDR2G requirements.
6.How does Aetrix verify that NCP3064BDR2G is sourced from the original manufacturer or authorized distributors?
All NCP3064BDR2G 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 NCP3064BDR2G meets industry standards.
7.What is the process for return or replacement of NCP3064BDR2G?
All NCP3064BDR2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP3064BDR2G, 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 NCP3064BDR2G part is unused and in its original packaging.
Return procedure for NCP3064BDR2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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