NCP1937A1DR2G

Description：IC PFC CTRLR CRM 20SOIC
Series：-
Mfr：onsemi
Package：Tape & Reel (TR)

SKU:332980304396 Category: PFC (Power Factor Correction) Brand: onsemi

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Product introduction

Product Detailed Parameters

Description：IC PFC CTRLR CRM 20SOIC
Series：-
Mfr：onsemi
Package：Tape & Reel (TR)
Mode：Critical Conduction (CRM)
Frequency - Switching：-
Voltage - Supply：9V ~ 30V
Operating Temperature：-40°C ~ 125°C
Mounting Type：Surface Mount
Package / Case：20-LSOP (0.154", 3.90mm Width), 17 Leads
Supplier Device Package：20-SOIC
Current - Startup：20 mA
Grade：-
Qualification：-

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NCP1937A1DR2G

Overview

The NCP1937A1DR2G is a combination Power Factor Correction (PFC) and Quasi-Resonant Flyback controller manufactured by onsemi. Designed for critical conduction mode (CRM) operation, this integrated circuit combines PFC and flyback control functions to enhance power efficiency in AC/DC conversion applications. It operates within a supply voltage range of 9V to 30V and supports a switching frequency of 250 kHz. The device is rated for an operating temperature range from -40°C to +125°C and features a typical operating supply current of 15 mA with a power dissipation of 620 mW.

Feature Summary

Integrates PFC and quasi-resonant flyback control functions into a single IC
Operates in critical conduction mode (CRM) for improved efficiency
Supports surface mount installation in SOIC-20 packages

Applications

Power factor correction controllers
AC/DC power management systems
Quasi-resonant flyback converters

Procurement Notes

Verify the specific suffix 'A1' against official onsemi documentation to confirm exact electrical characteristics and pinout compatibility. Ensure the SOIC-20 package type matches your PCB layout requirements. Confirm RoHS compliance status as indicated in the manufacturer's datasheet before finalizing procurement specifications.

Selection Notes

Select this component when designing systems requiring combined PFC and flyback regulation in a compact form factor. Consider the 250 kHz switching frequency and CRM operation mode for efficiency targets. Verify that the 9V to 30V supply voltage range aligns with your system's auxiliary power capabilities and thermal constraints.

Part Context

This part belongs to the NCP1937 family of combination controllers from onsemi. These devices are engineered to simplify power supply designs by integrating multiple control loops. The NCP1937 series targets high-efficiency applications where space and component count reduction are critical design priorities.