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NCP4328ASNT1G
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Product Detailed Parameters
- Description：IC REG SECONDARY CTRL 1OUT 5TSOP
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR),Tape & Reel (TR),Cut Tape (CT),Cut Tape (CT)
- Applications：Secondary Controller, Quasi-Resonant Switchmode Power Supplies
- Voltage - Input：2.5V ~ 36V
- Number of Outputs：1
- Voltage - Output：Adjustable
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：SOT-23-5 Thin, TSOT-23-5
- Supplier Device Package：5-TSOP
- Grade：-
- Qualification：-
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Overview
The NCP4328ASNT1G is a secondary side constant voltage switching controller designed for high-efficiency power supplies. It operates within an input voltage range of 2.5 V to 36 V and supports adjustable output voltages. The device features a fixed switching frequency of 1 kHz with a maximum duty cycle of 12.5%. It delivers an output current of 2.5 mA and consumes 105 uA of operating supply current. Packaged in a compact SOT-23-5 format, it functions reliably across a temperature range of -40°C to +125°C.
Feature Summary
- Provides precise secondary side regulation for constant voltage applications
- Operates efficiently at low switching frequencies suitable for specific topologies
- Supports wide input voltage ranges for flexible system integration
Applications
- Secondary controllers for quasi-resonant switching mode power supplies
- High efficiency SMPS topologies requiring secondary side control
- Constant voltage regulation circuits
Procurement Notes
Verify the complete part number including suffixes to ensure correct package and tape/reel specifications. Confirm RoHS compliance status through official documentation before procurement. Ensure compatibility with existing PCB footprints for the SOT-23-5 package. Check for any recent product change notices regarding packaging materials or manufacturing sites.
Selection Notes
Select this component when secondary side regulation is required for specific SMPS topologies. Consider the 1 kHz switching frequency and 12.5% duty cycle limits during design. Evaluate the 2.5 mA output drive capability against optocoupler requirements. Verify that the 2.5 V to 36 V input range aligns with the feedback network design.
Part Context
This component belongs to the NCP4328 series of secondary side controllers manufactured by onsemi. It is categorized under PMIC - Power Management ICs and Switching Controllers. The series focuses on providing accurate regulation for isolated power converters using secondary side sensing techniques.
Replacement Considerations
Check for NCP4328BSNT1G if a 6-pin TSOP package is preferred instead of the 5-pin SOT-23. Verify pinout compatibility and electrical parameters before substitution.
