Overview
The NCP1075STBT3G is a high-voltage switcher designed for low power offline Switch-Mode Power Supplies (SMPS) by onsemi. This component integrates a fixed frequency current mode controller with a 700 V MOSFET, making it suitable for various power management applications. Introduced on May 2, 2012, it is available in a SOT-223-4 package and complies with industry standards such as EU RoHS 2011/65/EU and 2015/863/EU.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | SOT-223-4 | |
| Switching Frequency | 100 kHz | |
| Maximum Supply Voltage | 700 V | V |
| Maximum Peak Current | 450 mA | mA |
| RDS(on) | 11 Ω | Ω |
| Minimum Operating Temperature | -40°C | °C |
| Maximum Operating Temperature | 125°C | °C |
| Soft Start Duration | 1 ms | ms |
| Leading Edge Blanking Duration | 200 ns | ns |
| Propagation Delay | 100 ns | ns |
Key Features
- Built-in 700 V MOSFET with an RDS(on) of 11 Ω, ensuring high efficiency and reliability.
- Current-mode fixed frequency operation at 100 kHz, with options for 65 kHz and 130 kHz in other variants of the NCP107x series.
- Soft-start, frequency-jittering, short-circuit protection, skip-cycle, and a maximum peak current set point for robust operation.
- Dynamic Self-Supply (DSS) eliminating the need for an auxiliary winding, and the ability to connect an auxiliary winding to reduce input power consumption.
- Overvoltage protection with auto-recovery and AC input line voltage detection.
- Large creepage distance between high-voltage pins, enhancing safety and reliability).
Applications
The NCP1075STBT3G is designed for use in low power offline SMPS applications, including but not limited to:
- Consumer electronics such as chargers, adapters, and small appliances.
- Industrial power supplies requiring high reliability and efficiency.
- Medical devices that need robust and efficient power management.
- Automotive accessories and systems where high voltage and low power consumption are critical.
Q & A
- What is the primary function of the NCP1075STBT3G?
The NCP1075STBT3G is a high-voltage switcher for low power offline Switch-Mode Power Supplies (SMPS).
- What is the switching frequency of the NCP1075STBT3G?
The switching frequency of the NCP1075STBT3G is 100 kHz.
- What is the maximum supply voltage the NCP1075STBT3G can handle?
The maximum supply voltage is 700 V.
- What is the RDS(on) of the MOSFET in the NCP1075STBT3G?
The RDS(on) of the MOSFET is 11 Ω.
- Does the NCP1075STBT3G have built-in protection features?
Yes, it includes features such as short-circuit protection, overvoltage protection with auto-recovery, and AC input line voltage detection.
- What is the operating temperature range of the NCP1075STBT3G?
The operating temperature range is from -40°C to 125°C.
- Is the NCP1075STBT3G compliant with industry standards?
Yes, it complies with EU RoHS 2011/65/EU and 2015/863/EU.
- What package type is the NCP1075STBT3G available in?
The NCP1075STBT3G is available in a SOT-223-4 package.
- Does the NCP1075STBT3G support dynamic self-supply?
Yes, it supports Dynamic Self-Supply (DSS) and can be connected to an auxiliary winding to reduce input power consumption.
- What are some typical applications of the NCP1075STBT3G?
Typical applications include consumer electronics, industrial power supplies, medical devices, and automotive accessories.
