Overview
The NCP1076STAT3G is a high-voltage switcher integrated circuit (IC) designed by onsemi for use in low-power offline Switch-Mode Power Supplies (SMPS). This IC combines a fixed frequency current mode controller with a 700 V MOSFET, offering a high level of integration and various protection features. It is available in a SOT-223 package, making it suitable for compact and efficient power supply designs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| MOSFET On-Resistance (RDS(on)) | 4.7 | Ω |
| Peak Current (Ipeak) | 650 | mA |
| Oscillation Frequency | 65 kHz (other frequencies available: 100 kHz, 130 kHz) | kHz |
| Power Switch Circuit Breakdown Voltage (BVDSS) | 700 | V |
| VCC On Voltage (VCC(on)) | 7.8 | V |
| VCC Off Voltage (VCC(off)) | 6.1 | V |
| Package Type | SOT-223 |
Key Features
- Built-in 700 V MOSFET: With an on-resistance of 4.7 Ω, providing high efficiency and reliability.
- Current-Mode Fixed Frequency Operation: Available frequencies include 65 kHz, 100 kHz, and 130 kHz.
- Soft-Start and Frequency Jittering: Reduces electromagnetic interference (EMI) and ensures smooth startup.
- Short-Circuit Protection and Overload Detection: Includes a timer to detect overload or short-circuit events.
- Overvoltage Protection with Auto-Recovery: Protects the IC from voltage spikes and recovers automatically.
- Dynamic Self-Supply (DSS): Eliminates the need for an auxiliary winding, reducing component count.
- Low Standby Power Consumption: Enters skip mode to reduce standby consumption to below 50 mW at high line input.
- Large Creepage Distance Between High-Voltage Pins: Enhances safety and reliability in high-voltage applications.
Applications
- Offline Switch-Mode Power Supplies (SMPS): Suitable for low-power applications such as chargers, adapters, and small appliances.
- Consumer Electronics: Ideal for use in TVs, set-top boxes, and other consumer electronic devices.
- Industrial Power Supplies: Can be used in industrial control systems, lighting, and other industrial applications.
Q & A
- What is the maximum breakdown voltage of the MOSFET in the NCP1076STAT3G?
The maximum breakdown voltage of the MOSFET is 700 V.
- What are the available oscillation frequencies for the NCP1076STAT3G?
The available frequencies are 65 kHz, 100 kHz, and 130 kHz.
- What is the typical on-resistance (RDS(on)) of the MOSFET in the NCP1076STAT3G?
The typical on-resistance (RDS(on)) is 4.7 Ω.
- What protection features are included in the NCP1076STAT3G?
The IC includes short-circuit protection, overload detection, overvoltage protection with auto-recovery, and AC input line voltage detection.
- How does the NCP1076STAT3G manage standby power consumption?
The IC enters skip mode to reduce standby consumption to below 50 mW at high line input.
- What is the package type of the NCP1076STAT3G?
The package type is SOT-223.
- Does the NCP1076STAT3G require an auxiliary winding for operation?
No, the Dynamic Self-Supply (DSS) feature eliminates the need for an auxiliary winding.
- What is the purpose of the soft-start feature in the NCP1076STAT3G?
The soft-start feature reduces electromagnetic interference (EMI) and ensures a smooth startup.
- How does the frequency jittering feature benefit the NCP1076STAT3G?
The frequency jittering feature helps in reducing electromagnetic interference (EMI).
- What is the typical VCC on voltage for the NCP1076STAT3G?
The typical VCC on voltage is 7.8 V.
