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UC3845AD

14 Terminals 7.6V~30V 14-Pin UC3845 DC to DC converter ICSWITCHING CONTROLLER 1 Outputs 500kHz Transistor Driver


  • Manufacturer: Texas Instruments
  • Origchip NO: 815-UC3845AD
  • Package: 14-SOIC (0.154, 3.90mm Width)
  • Datasheet: PDF
  • Stock: 356
  • Description: 14 Terminals 7.6V~30V 14-Pin UC3845 DC to DC converter ICSWITCHING CONTROLLER 1 Outputs 500kHz Transistor Driver (Kg)

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Details

Tags

Parameters
Factory Lead Time 6 Weeks
Lifecycle Status ACTIVE (Last Updated: 2 days ago)
Mounting Type Surface Mount
Package / Case 14-SOIC (0.154, 3.90mm Width)
Surface Mount YES
Number of Pins 14
Weight 122.413241mg
Operating Temperature 0°C~70°C TA
Packaging Tube
JESD-609 Code e4
Pbfree Code yes
Part Status Active
Moisture Sensitivity Level (MSL) 1 (Unlimited)
Number of Terminations 14
ECCN Code EAR99
Terminal Finish Nickel/Palladium/Gold (Ni/Pd/Au)
Subcategory Switching Regulator or Controllers
Technology BIPOLAR
Terminal Position DUAL
Terminal Form GULL WING
Peak Reflow Temperature (Cel) 260
Supply Voltage 11V
Frequency 450kHz
Base Part Number UC3845
Function Step-Up, Step-Down, Step-Up/Step-Down
Number of Outputs 1
Output Voltage 5.1V
Output Type Transistor Driver
Input Voltage-Nom 15V
Analog IC - Other Type SWITCHING CONTROLLER
Output Configuration Positive, Isolation Capable
Output Current 200mA
Voltage - Supply (Vcc/Vdd) 7.6V~30V
Quiescent Current 11mA
Control Features Frequency Control
Topology Buck, Boost, Flyback, Forward Converter
Control Mode CURRENT-MODE
Frequency - Switching 500kHz
Control Technique PULSE WIDTH MODULATION
Rise Time 50ns
Supply Current-Max (Isup) 25mA
Synchronous Rectifier No
Fall Time (Typ) 50 ns
Nominal Input Voltage 25V
Switcher Configuration BUCK-BOOST
Max Duty Cycle 50 %
Input Current 11mA
Duty Cycle (Max) 48%
Height 1.75mm
Length 8.65mm
Width 3.91mm
Thickness 1.58mm
REACH SVHC No SVHC
RoHS Status ROHS3 Compliant
Lead Free Lead Free

UC3845AD Overview


This switching controller fits most application requirements since it is packaged in a 14-SOIC (0.154, 3.90mm Width) package. There is enough capacity in the dc motor controller to generate the output for the 1 input. Packaged in solid enclosures, this pmic has a Tube rating. Transistor Driver dc switching's outputs (s) are supported. DC control operates at 7.6V~30V volts and has 7.6V~30V supply voltage. Qualified to work in a 0°C~70°C TA dc switcher. Using this switching controller, it is possible to switch at 500kHz. The Surface Mount allows it to be used for dc dc regulator in general. Featured in the dcdc regulator is Frequency Control which allows efficient switching control. Thare switch converters are connected to an analog integrated circuit (IC) of type SWITCHING CONTROLLER. Switching converters are designed with the terminal (s) at position DUAL . Different dc switching's functions can be applied to 14 terminations. To name a few of the control techniques these dc dc converter ics adapt, it includes PULSE WIDTH MODULATION. It is inputted with a DC switcher's voltage of 15V. A search for "UC3845" will reveal other relevant dc to dc converter ics. 14 pins are on switching converter. In particular, switching converter is a type of Switching Regulator or Controllers. According to the test statistics, DC regulator outputs 5.1V voltage. In most cases, the output current of the dc dc regulator will be 200mA, so note that when you start the project. The maximum duty cycle of this voltage regulator dc to dc is set to 50 % to ensure reliability during power-up and power-down. There is 450kHz frequency setting on the switching controller. When the dc switching is dormant, it uses 11mA. It is possible to set the input voltage as 25V for nominal working statuses. The supply voltage must be 11V. There should be 25mA current exceeding 25mA supplied to the controller. Input of 11mA current flow would satisfy the operation requirements of the switching converter .

UC3845AD Features


Transistor Driver Outputs
Switching Frequency: 500kHz
Frequency Control
PULSE WIDTH MODULATION
Max Duty Cycle: 50 %
Frequency: 450kHz

UC3845AD Applications


There are a lot of Texas Instruments UC3845AD DC to DC converter applications.

  • Grinders
  • Industrial robots
  • Electric water heaters
  • Pipe bending machines
  • Surface processing equipment
  • Constant current circuits
  • Gear/thread machining machines
  • Smart grid
  • Digital display device
  • Overvoltage protection circuits in TV sets