UCC24636DBVR - TI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

UCC24636DBVR
Manufacturer

TI
ChipWorker Part#

CW3195011
Package

SOT-23-6
Description

Synchronous Rectifier Controller With Ultra-Low Standby Current 6-SOT-23 -40℃ to 125℃
Documentation

Datasheet

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UCC24636DBVR Specifications

Attribute	Attribute Value

Part Number	UCC24636DBVR
Manufacturer	TI
ChipWorker Part#	CW3195011
Documentation	Datasheet
Mounting Style	Surface Mount
Number of Pins	6 Pin
Case/Package	SOT-23-6
Switching Frequency	130 kHz
Operating Temperature (Max)	125 ℃
Operating Temperature (Min)	-40 ℃
Supply Voltage	3.6V ~ 28V
Supply Voltage (Max)	28 V
Supply Voltage (Min)	3.75 V
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Operating Temperature	-40℃ ~ 125℃
Product Lifecycle Status	Active
Packaging	Tape & Reel (TR)
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
ECCN Code	EAR99

Product Description

The UCC24636 SR is a compact, 6-pin secondary-side synchronous rectifier MOSFET controller and driver for high efficiency Flyback converters operating in Discontinuous (DCM) and Transition mode (TM). Unlike traditional SR controllers which measure the SR MOSFET drain voltage, UCC24636 implements a volt-second balance control method to determine the turn off transition of the SR MOSFET; hence, SR conduction time is independent of the MOSFET RDSON, parasitic inductance or ringing allowing flexibility to designers in component slelction and PCB layout. This control method enables maximum SR conduction time and highest rectifier efficiency for a given MOSFET.
The controller has built in intelligence to detect converter no load operation and automatically enters standby mode. While in standby mode, it disables the SR MOSFET and lowers its bias supply current to 110µA to further reduce overall system standby power consumption. The wide VDD operating range for the controller allows direct bias from the converter output for fixed or variable output voltage designs. This eliminates the need for an auxilliary winding on the main transformer, which simplifies the circuit design and reduces the cost.

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