NCP1606B Datasheet PDF – Power Factor Controller – Onsemi

Part Number: NCP1606

Function: Cost Effective Power Factor Controller

Package: SO 8 Pin Type

Manufacturer: ON Semiconductor

NCP1606B Image


The NCP1606B is an active power factor controller specifically designed for use as a pre−converter in electronic ballasts, ac−dc adapters and other medium power off line converters (typically up to 300 W). It embeds a Critical Conduction Mode (CRM) scheme that substantially exhibits unity power factor across a wide range of input voltages and power levels. Housed in a DIP8 or SOIC−8 package, the NCP1606 minimizes the number of external components. Its integration of comprehensive safety protection features makes it an excellent driver for rugged PFC stages.



1. “Unity” Power Factor

2. No Need for Input Voltage Sensing

3. Latching PWM for Cycle by Cycle On Time Control (Voltage Mode)

4. High Precision Voltage Reference (±1.6% over temperature ranges)

5. Very Low Startup Current Consumption (≤40 A)

6. Low Typical Operating Current (2.1 mA)

7. -500 mA / +800 mA Totem Pole Gate Driver

8. Undervoltage Lockout with Hysteresis

9. Pin to Pin Compatible with Industry Standards

Typical Application Circuits :

NCP1606B Datasheet


1. Electronic Light Ballast

2. AC Adapters, TVs, Monitors

3. All Off Line Appliances Requiring Power Factor Correction

NCP1606B Datasheet PDF