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UCC3889

Category:ACDC- and -DCDC-power supply
Product Name:Offline power controller
Manufacturers:TI
Production Batch Number:10+
Encapsulation:8PDIP, 8SOIC
Stock Status:There is stock
Stock Quantity:5000
Minimum order quantity: 1
Details:

Product introduction

The UCC1889 controller is optimized for use with offline, low-power, low-voltage, regulated bias power supplies. Unique circuit topology, this device can be seen as two cascaded flyback converters, each in continuous operation, driven from a single external power switch. The significant advantages of this method are the ability to achieve a voltage conversion ratio of 400V and transformerless internal losses as low as 12V.

The control algorithm used by the UCC1889 is an input voltage that forces the switching time to be inversely proportional, while the off-time switch is an inversely proportional output voltage. This action is referenced by an internal automatic feedback control loop and reference.

characteristic

Transformer offline application
Ideal primary-side bias power supply
Efficient BiCMOS design
Wide input range
Low fixed or adjustable output voltage
Low-cost SMD inductors are used
Short-circuit protection
Optional isolation capability

parameter

		UCC3889
topology		Flyback
Control method		Voltage mode
Duty cycle (max.) (%)		55
Frequency (max) (khertz)		250
On/Off of Undervoltage Lockout Threshold (5)		8.4/6.3
Pins/Packets		8PDIP，8SOIC
(#) Regulated output		One
Operating temperature range(°C)		0 to 70

andUCC3889Related ICs are:

Model	Manufacturers	lot number	encapsulation	illustrate
UCC3889D	UNITRODE	00+	SOP-8P	Brand new original in stock
74FCT388915T133PY8	IDT	06+	SOP	Original
IDT74FCT-388915T100PY	IDT	04+	SSOP28	Original stock
UCC3889	TI	10+	8PDIP, 8SOIC	Offline power controller

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