Specification	NCP1681AAD2R2G

Frequency - Switching	65 kHz
Mode	Continuous Conduction (CCM)
Mounting Type	Surface Mount
Package / Case	18 Leads
Package / Case	20-LSOP
Package / Case [x]	0.154 in
Package / Case [y]	3.9 mm
Supplier Device Package	20-SOIC
Voltage - Supply	30 VDC

NCP1681 Series

Totem-Pole Continuous Conduction Mode (CCM) / Multi-mode (CrM-CCM) Power Factor Correction Controller

Part	Frequency - Switching	Mode	Mounting Type	Voltage - Supply	Supplier Device Package	Package / Case [y]	Package / Case	Package / Case [x]	Package / Case
ON Semiconductor NCP1681AAD2R2G	65 kHz	Continuous Conduction (CCM)	Surface Mount	30 VDC	20-SOIC	3.9 mm	18 Leads	0.154 in	20-LSOP

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 6.36
		10	$ 4.20
		25	$ 3.64
		100	$ 3.00
		250	$ 2.69
		500	$ 2.49
		1000	$ 2.48
	Digi-Reel®	1	$ 6.36
		10	$ 4.20
		25	$ 3.64
		100	$ 3.00
		250	$ 2.69
		500	$ 2.49
		1000	$ 2.48
	Tape & Reel (TR)	2500	$ 0.78
		5000	$ 0.77
Newark	Each (Supplied on Full Reel)	1	$ 0.97
		3000	$ 0.92
		6000	$ 0.86
		12000	$ 0.80
		18000	$ 0.77
		30000	$ 0.76
ON Semiconductor	N/A	1	$ 0.82

Description

General part information

NCP1681 Series

The NCP1681 is a PFC controller IC designed to drive the bridgeless totem-pole PFC topology. The bridgeless totem-pole PFC is a power factor correction architecture that consists of a fast switching leg driven at the PWM switching frequency and a second leg that operates at the AC line frequency. This topology eliminates the diode bridge present at the input of a conventional PFC circuit, allowing significant improvement in the power stage efficiency. The controller can be configured to operate in Continuous Conduction Mode (CCM) or Multi-Mode (CrM-CCM) operation.