Details, datasheet, quote on part number: UCC3806PWTR
PartUCC3806PWTR
CategoryPower Management => PWM Power Supply => Current Mode
TitleCurrent Mode
Descriptionti UCC3806, Low Power, Dual Output, Current Mode PWM Controller
CompanyTexas Instruments, Inc.
DatasheetDownload UCC3806PWTR datasheet
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Features, Applications

FEATURES D BiCMOS Version of UC3846 Family D 1.4-mA Maximum Operating Current D 100-A Maximum Startup Current D 0.5-A Peak Output Current D 125-ns Circuit Delay D Easier Parallelability D Improved Benefits of Current Mode Control DESCRIPTION

The UCC3806 family of BiCMOS PWM controllers offers exceptionally improved performance with a familiar architecture. With the same block diagram and pinout of the popular UC3846 series, the UCC3806 line features increased switching frequency capability while greatly reducing the bias current used within the device. With a typical startup current 50 A and a well defined voltage threshold for turn-on, these devices are favored for applications ranging from off-line power supplies to battery operated portable equipment. Dual high-current, MOSFET driving outputs and a fast current sense loop further enhance device versatility. All the benefits of current mode control including simpler loop closing, voltage feed-forward, parallelability with current sharing, pulse-by-pulse current limiting, and push/pull symmetry correction are readily achievable with the UCC3806 series. These devices are available in multiple package options for both through-hole and surface mount applications; and in commercial, industrial, and military temperature ranges. The UCC3806 is specified for operation from to 125C, the UCC2806 is specified for operation from to 85C, and the UCC3806 is specified for operation from to 70C.

+VIN 15 VIN UCC3806 2 VREF INV 6 COMP 7 AOUT 11 BOUT 14 SHUT 15 DOWN CS+ 4 GND UCC3612 UC39431 +VOUT

PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.

over operating free-air temperature range unless otherwise noted(1) UCx806 Supply voltage, VIN Supply current, IIN Output supply voltage VIN, low impedance VIN, high impedance VC Continuous source or sink Gate drive Output current SYNC COMP Analog input voltage range Storage temperature, Tstg Operating temperature, TJ CS-, CS+, NI, INV, SHUTDOWN to -(self-limiting) -0.3 to (VIN C mA UNIT mA V

Lead temperature, Tsol, mm (1/16 inch) from case for 10 seconds C (1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. All voltages are with respect to GND. Currents are positive into and negative out of, the specified terminal.

MIN Input voltage, VIN UCC1806 Operating junction temperature, UCC2806 UCC3806 NOM MAX C UNIT V
D, DW, OR PW PACKAGE (TOP VIEW) OR L PACKAGE (TOP VIEW)

PACKAGED DEVICES DESIGNATOR PW Q TYPE TSSOP-16 PLCC-20 OPTION Tube Reeled Tube Reeled Tube Reeled Tube Reeled Tube Reeled QUANTITY UCC3806Q UCC3806QTR

VIN = 330 pF, CBYPASS on VREF = 0.01 F, < 125C for the < 85C for the < 70C for the UCC3806, and = TJ (unless otherwise noted) PARAMETER REFERENCE VREF Supply, UVLO, turn-on Load regulation Total output variation (1)(2) Output noise voltage (2) Long term stability (2) Output short circuit OSCILLATOR Initial accuracy Temperature stability (2) Amplitude UCC1806 UCC2806 tDELAY Delay-to-output time, SYNC UCC3806 VCT 0 V, VRT = VREF 0.8 V VSYNC 2.0 V VCT 0 V, VRT = VREF 0.8 V VSYNC = 25C T(min) TA T(max) V 52 kHz 0.2 mA IOUT 5 mA Line, load, temperature 10 Hz fOSC 10 kHz, 25C 1000 hours mA V TEST CONDITIONS MIN TYP MAX UNIT


 

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