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Frequency Controlled Electronic IC Chip Low Start Up Current 500kHz 8 - DIP

Categories Electronic IC Chip
Model Number: KA3842
Internal Switch(s): No
Voltage - Start Up: 16V
Voltage - Supply (Vcc/Vdd): 10 V ~ 30 V
Duty Cycle: 97%
Frequency - Switching: Up to 500kHz
Control Features: Frequency Control
Operating Temperature: 0°C ~ 70°C (TA)
Package / Case: 8-DIP (0.300", 7.62mm)
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Frequency Controlled Electronic IC Chip Low Start Up Current 500kHz 8 - DIP


KA3842 Electronic IC Chip Converter Offline Up to 500kHz 8-DIP


Output Isolation-
Internal Switch(s)No
Voltage - Breakdown-
Topology-
Voltage - Start Up16V
Voltage - Supply (Vcc/Vdd)10 V ~ 30 V
Duty Cycle97%
Frequency - SwitchingUp to 500kHz
Fault Protection-
Control FeaturesFrequency Control
Operating Temperature0°C ~ 70°C (TA)
Package / Case8-DIP (0.300", 7.62mm)
Supplier Device Package8-DIP
Mounting TypeThrough Hole
Base Part NumberKA3842

Features

• Low Start Up Current

• Maximum Duty Clamp

• UVLO With Hysteresis

• Operating Frequency Up To 500KHz

Description

The KA3842B/KA3843B/KA3844B/KA3845B are fixed frequency current-mode PWM controller. They are spe- cially 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 Ideally suited for driving a power MOSFET. Protection circuity Includes built in under-voltage lockout and current limiting. The KA3842B and KA3844B have UVLO thresholds of 16V (on) and 10V (off) The KA3843B and KA3845B are 8.5V (on) and 7.9V (off) The KA3842B and KA3843B can operate within 100% duty cycle. The KA3844B and KA3845B can operate with 50% duty cycle.


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