NCP1050ST100T3G

Description：IC OFFLINE SWITCH FLYBACK SOT223
Series：-
Mfr：onsemi
Package：Tape & Reel (TR)

SKU:4bdac3da8e21 Category: AC DC Converters, Offline Switchers Brand: onsemi

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Product introduction

NCP1050ST100T3G is listed in the AC DC Converters, Offline Switchers range at ChipApex. The manufacturer field lists onsemi. Its product description is IC OFFLINE SWITCH FLYBACK SOT223. Review the specifications below when checking this part for your BOM.

AC DC Converters, Offline Switchers specifications for NCP1050ST100T3G

Description：IC OFFLINE SWITCH FLYBACK SOT223
Series：-
Mfr：onsemi
Package：Tape & Reel (TR)
Output Isolation：Isolated
Internal Switch(s)：Yes
Voltage - Breakdown：700V
Topology：Flyback
Voltage - Start Up：8.5 V
Voltage - Supply (Vcc/Vdd)：7.5V ~ 10V
Duty Cycle：77%
Frequency - Switching：100kHz
Fault Protection：Current Limiting, Open Loop, Over Load, Over Temperature
Control Features：-
Operating Temperature：-40°C ~ 150°C (TJ)
Package / Case：TO-261-4, TO-261AA
Supplier Device Package：SOT-223 (TO-261)
Mounting Type：Surface Mount
Grade：-
Qualification：-
Power (Watts)：40 W

AC DC Converters, Offline Switchers datasheet and documents for NCP1050ST100T3G

NCP1050ST100T3G

AC DC Converters, Offline Switchers Overview

The NCP1050ST100T3G is a monolithic switching controller from onsemi, designed for low-power offline AC/DC applications. It integrates a high-voltage power MOSFET and a current-mode PWM controller within a single package. The device operates at a fixed switching frequency of 100 kHz and utilizes a flyback topology. It features a maximum duty cycle of 72% and supports an output current capability of 8 mA. The component functions reliably across a wide temperature range, operating between -40°C and +125°C. It is housed in a SOT-223-4 surface-mount package.

AC DC Converters, Offline Switchers Feature Summary

Integrates a high-voltage power switch with a current-mode PWM controller for compact design
Employs dynamic self-supply technology to eliminate the need for auxiliary windings
Includes built-in protection mechanisms such as overvoltage lockout and thermal shutdown

AC DC Converters, Offline Switchers Applications

Low power offline SMPS designs
AC/DC converters for consumer electronics
Standby power supplies

AC DC Converters, Offline Switchers Procurement Notes

Verify the specific suffix T3G against official datasheets to confirm RoHS compliance and lead-free status. Confirm the ST designation corresponds to the SOT-223 package variant. Check for any recent Product Change Notifications (PCN) regarding manufacturing site transfers or material updates. Ensure compatibility with existing PCB footprints before finalizing procurement decisions.

AC DC Converters, Offline Switchers Selection Notes

Select this component for applications requiring a simplified bill of materials due to integrated switching capabilities. The fixed 100 kHz frequency suits designs where electromagnetic interference filtering is manageable without complex jittering schemes. Consider the SOT-223-4 package constraints for thermal management in enclosed spaces compared to larger DIP options.

AC DC Converters, Offline Switchers Part Context

This part belongs to the NCP1050 series of monolithic switchers. These devices are engineered to reduce component count and assembly costs by combining the power switch and control logic. The series targets cost-sensitive, low-power adapter markets where reliability and ease of implementation are critical priorities for system designers.