UC3843AD

• Factory Lead Time
  6 Weeks
• Lifecycle Status
  ACTIVE (Last Updated: 6 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
  UC3843
• Function
  Step-Up, Step-Down, Step-Up/Step-Down
• Number of Outputs
  1
• Output Voltage
  13.5V
• Output Type
  Transistor Driver
• Input Voltage-Nom
  15V
• Analog IC - Other Type
  SWITCHING CONTROLLER
• Output Configuration
  Positive
• Power Dissipation
  1W
• Output Current
  1A
• Voltage - Supply (Vcc/Vdd)
  7.6V~30V
• Quiescent Current
  11mA
• Control Features
  Frequency Control
• Topology
  Boost, Buck, Buck-Boost, Flyback, Forward
• Control Mode
  CURRENT-MODE
• Frequency - Switching
  Up to 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
• Max Duty Cycle
  100 %
• Input Current
  11mA
• Duty Cycle (Max)
  96%
• Height
  1.75mm
• Length
  8.65mm
• Width
  3.91mm
• Thickness
  1.58mm
• REACH SVHC
  No SVHC
• RoHS Status
  ROHS3 Compliant
• Lead Free
  Lead Free

UC3843AD Overview
It comes in a 14-SOIC (0.154, 3.90mm Width) package, so switching controller can be used for most applications. dc motor controller is suitable for 1 output generation. PMIC is packaged in a solid enclosure of Tube. It is capable of handling Transistor Driver dc switching's outputs (s). dc control's supply and operating voltages are 7.6V~30V. Worked in a 0°C~70°C TA dc switcher before. The switching controller is capable of switching at the Up to 500kHz position. A generalization of dc dc regulator can be made using Surface Mount. To provide efficient switching control, Frequency Control is included in the dcdc regulator. Connected to a SWITCHING CONTROLLER analog IC, the switch converters are connected to a power supply. A switching converters's terminal (s) sits at the DUAL position. A variety of 14 terminations are available in dc switching. These dc dc converter ics adapt several control methods, including PULSE WIDTH MODULATION. It is inputted with a DC switcher's voltage of 15V. Other relevant dc to dc converter ics will be returned if you search "UC3843". Total pins of switching converter are 14. Switching converter type is specifically Switching Regulator or Controllers. DC regulator outputs 13.5V voltage based on test statistics. A starting point for a project is to note down the dc dc regulator's usual output current, which is 1A. To ensure the reliability under power-up and power-down, the maximum duty cycle of the voltage regulator dc to dc is set as 100 %. Switching controller operates at a frequency of 450kHz. The dc switching utilizes 11mA when it is in a dormant state. 25V is the nominal working voltage. The supply voltage must be 11V. 25mA more than 25mA current should be supplied to the controller. If the current flow input is 11mA, the switching converter could operate.

UC3843AD Features
Transistor Driver Outputs
Switching Frequency: Up to 500kHz
Frequency Control
PULSE WIDTH MODULATION
Max Duty Cycle: 100 %
Frequency: 450kHz

UC3843AD Applications
There are a lot of Texas Instruments UC3843AD DC to DC converter applications.

Automatic testing equipment
Surface processing equipment
Window air conditioners
Current source circuits
Geothermal power
Special machining machine tools
Alternators
Adjustable voltage or current linear circuits
Surge protection circuits
Die casting equipment