Details, datasheet, quote on part number: UCC3806Q
PartUCC3806Q
CategorySemiconductors => Power Management => Offline and Isolated DC/DC Controllers and Converters => PWM and Resonant Controller
Part familyUCC3806 Low Power, Dual Output, Current Mode PWM Controller
TitleCurrent Mode
DescriptionLow Power, Dual Output, Current Mode PWM Controller 20-PLCC 0 to 70
CompanyTexas Instruments, Inc.
StatusNRND
ROHSY
SampleNo
DatasheetDownload UCC3806Q datasheet
Cross ref.Similar parts: UCC2806Q, UCC2806QTR, UCC3806QTR
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Specifications 
Operating Temperature Range(C)0 to 70
UVLO Thresholds On/Off(V)7.5/6.75
Frequency(Max)(kHz)1000
RatingCatalog
Vin(Min)(V)6.75
Approx. Price (US$)4.10 | 1ku
Package GroupPDIP,SOIC,TSSOP
FeaturesError Amplifier,Multi-topology,Soft Start,Synchronization Pin
Gate Drive(Typ)(A)0.5
Duty Cycle(Max)(%)49
TopologyPush-Pull
Control MethodCurrent
Vin(Max)(V)15
  Mecanical Data
Pin nbPackage typeInd stdJEDEC codePackage qtyCarrierDevice markWidth (mm)Length (mm)Thick (mm)Pitch (mm)
20FNPLCCS-PQCC-J46TUBEUCC3806Q 8.968.964.061.27
Application notes
• DN-51 Programming the UCC3806 Features
The UCC3806 is a pin-for-pin-compatible BiCMOS replacement for the UC3846 and UC3856. However, this design note explains how some functions in the UCC3806 are programmed differently. In particular, the CUR LIM ADJ pin programs the maximum peak current for | Doc
• U-144 UCC3806 BiCMOS Current Mode Control IC
The UCC3806 BiCMOS current-mode controller has the advantages of reductions in current consumption, in power loss, and in propagation delays within the IC. The UCC3806 is pin-for-pin compatible with the popular UC3846 and UC3856 controllers. With minimal p | Doc
• DN-45 UC3846, UC3856 and UCC3806 Push Pull PWM Current Mode Control ICs
The UC3856 is a pin-for-pin-compatible, high-performance, bipolar version of the industry standard UC3846. It can replace the UC3846 with few circuit modifications, and it features increased speed, higher gate-drive current, and reduced propagation delays. | Doc
• DN-62 Switching Power Supply Topology Voltage Mode vs. Current Mode
This design note explains the differences between voltage-mode and current-mode switching power supply topologies. It includes a circuit diagram for each mode and suggests criteria for choosing which mode to use. | Doc

 

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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