UC3843BN PWM Controller, 500 kHz 8-Pin, PDIP

UC3843BN PWM Controller, 500 kHz 8-Pin, PDIP

• Low Start up Current
• Maximum Duty Clamp
• UVLO With Hysteresis
• Operating Frequency up to 500KHz

SKU: 26628
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Description

UC3843BN PWM Controller, 500 kHz 8-Pin, PDIP

The UC3842/UC3843/UC3844/UC3845 are fixed frequency current-mode PWM controller. They are specially designed for Off-Line and DC to DC converter applications with minimum external components ,These integrated circuits feature a trimmed oscillator for precise duty cycle
control, a temperature compensated reference, high gain error amplifier, current sensing comparator and a high current totempole output for driving a Power MOSFET The UC3842 and UC3844 have UVLO thresholds of 16V (on) and 10V (off), The UC3843 and UC3845 are 8.5V(on) and 7.9V (off). The UC3842 and UC3843 can operate within 100% duty cycle. The UC3844 and UC3845 can operate with 50% duty cycle.

Specifications:

Attribute Value
Maximum Switching Frequency 500 kHz
Output Current 1 A
Control Method Current
Number of Outputs 1
Mounting Type Through Hole
Fall Time 50ns
Rise Time 50ns
Package Type PDIP
Topology Boost, Flyback, Forward
Pin Count 8
Maximum Duty Cycle 100%
Dimensions 10.92 x 6.6 x 3.32mm
PWM Controller Type Current Mode
Length 10.92mm
Width 6.6mm
Height 3.32mm
Minimum Operating Temperature -40 °C
Maximum Operating Temperature +150 °C

Package Includes:

  • 1x UC3843

Documents:

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