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Updated at 17/06/2025 10:30:15(UTC+8)

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Description

The UCC3895DW is a BiCMOS Advanced Phase Shift PWM Controller that implements control of a full-bridge power stage by phase shifting the switching of one half-bridge with respect to the other. The device allows constant frequency pulse-width modulation in conjunction with resonant zero-voltage switching to provide high efficiency at high frequencies. The part is used either as a voltage-mode or current-mode controller. It improves on that controller family with additional features such as enhanced control logic, adaptive delay set and shutdown capability. Because the device is built using the BCDMOS process, it operates with dramatically less supply current than its bipolar counterparts. The UCC3895 operates with a maximum clock frequency of 1MHz.
Programmable-output turn-on delay
Adaptive delay set
Bidirectional oscillator synchronization
Voltage-mode, peak current-mode or average current-mode control
Programmable soft start, soft stop and chip disable via a single pin
0 to 100% Duty-cycle control
7MHz Error amplifier
Operation to 1MHz
Typical 5mA operating current at 500kHz
Very low 150µA current during UVLO
Green product and no Sb/Br
IC can be damaged by ESD. We recommend that all ICs be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.

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UCC3895DW Specifications

Attribute	Attribute Value

Datasheet	Datasheet
3D Model	3D Model
Mounting Style	Surface Mount
Number of Pins	20 Pin
Case/Package	SOIC-20
Frequency	500 kHz
Supply Voltage (DC)	10.0V (min)
Power Rating	650 mW
Number of Outputs	1 Output
Input Voltage (DC)	12.0 V
Output Voltage	250 mV
Output Current	10 mA
Supply Current	5.00 mA
Number of Channels	4 Channel
Number of Positions	20 Position
Power Dissipation	650 mW
Number of Regulated Outputs	4 Output
Rise Time	20 ns
Switching Frequency	1 MHz
Topology	Buck
Duty Cycle	100 %
Output Voltage (Max)	16.8 V
Maximum Duty Cycle	100 %
Fall Time	20 ns
Operating Temperature (Max)	70 ℃
Operating Temperature (Min)	0 ℃
Power Dissipation (Max)	650 mW
Supply Voltage	10V ~ 16.5V
Supply Voltage (Max)	16.5 V
Supply Voltage (Min)	10 V
Input Voltage	12 V
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Size-Length	12.8 mm
Size-Width	7.52 mm
Size-Height	2.35 mm
Operating Temperature	0℃ ~ 70℃
Product Lifecycle Status	Active
Packaging	Tube
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance	No SVHC
REACH SVHC Compliance Edition	2014/12/17
ECCN Code	EAR99
HK STC License	NLR

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