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  • UC3843AN

UC3843AN

8 Terminals 8.4V~30V 8-Pin UC384*A DC to DC converter ICSWITCHING CONTROLLER 1 Outputs Up to 500kHz Transistor Driver


  • Manufacturer: ON Semiconductor
  • Origchip NO: 598-UC3843AN
  • Package: 8-DIP (0.300, 7.62mm)
  • Datasheet: PDF
  • Stock: 200
  • Description: 8 Terminals 8.4V~30V 8-Pin UC384*A DC to DC converter ICSWITCHING CONTROLLER 1 Outputs Up to 500kHz Transistor Driver (Kg)

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Details

Tags

Parameters
Control Features Frequency Control
Topology Boost, Flyback
Control Mode CURRENT-MODE
Frequency - Switching Up to 500kHz
Input Voltage (Max) 30V
Control Technique PULSE WIDTH MODULATION
Rise Time 40ns
Synchronous Rectifier No
Fall Time (Typ) 40 ns
Switcher Configuration SINGLE
Max Duty Cycle 100 %
Duty Cycle (Max) 96%
Height Seated (Max) 4.45mm
Width 7.62mm
RoHS Status Non-RoHS Compliant
Lead Free Lead Free
Lifecycle Status OBSOLETE (Last Updated: 1 week ago)
Mount Through Hole
Mounting Type Through Hole
Package / Case 8-DIP (0.300, 7.62mm)
Number of Pins 8
Weight 851mg
Operating Temperature 0°C~70°C TA
Packaging Tube
Published 2000
JESD-609 Code e0
Pbfree Code no
Part Status Obsolete
Moisture Sensitivity Level (MSL) 1 (Unlimited)
Number of Terminations 8
ECCN Code EAR99
Terminal Finish Tin/Lead (Sn/Pb)
Subcategory Switching Regulator or Controllers
Technology BIPOLAR
Terminal Position DUAL
Terminal Pitch 2.54mm
Frequency 60kHz
Base Part Number UC384*A
Function Step-Up, 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
Operating Supply Current 17mA
Nominal Supply Current 17mA
Output Configuration Positive
Output Current 1A
Voltage - Supply (Vcc/Vdd) 8.4V~30V

UC3843AN Description


The UC3842A and UC3843A series of high-performance fixed frequency current mode controllers are intended primarily for off-line and DC-to-DC converter applications, providing a cost-effective solution with few external components to the designer. A trimmed oscillator for precise duty cycle management, a temperature corrected reference, a high gain error amplifier, a current detecting comparator, and a high current totem pole output well suited for feeding a power MOSFET are all included in these integrated circuits.

Input and reference Undervoltage lockouts with hysteresis, cycle by cycle current limiting, programmable output deadtime, and a latch for single pulse metering are also provided as safety measures. The UC3843AN is offered in both an 8pin dual-inline and a 14pin plastic surface mount (SOIC14) packaging.



UC3843AN Features


  • Trimmed Oscillator Discharge Current for Precise Duty Cycle Control

  • Current Mode Operation to 500 kHz

  • Automatic Feed Forward Compensation

  • Latching PWM for Cycle?By?Cycle Current Limiting

  • Internally Trimmed Reference with Undervoltage Lockout

  • High Current Totem Pole Output

  • Undervoltage Lockout with Hysteresis

  • Low Startup and Operating Current

  • Direct Interface with ON Semiconductor SENSEFET? Products

  • Pb?Free Packages are Available



UC3843AN Applications


  • General-purpose amplifier

  • Switching applications

  • Power management

  • Industrial