KA384X Datasheet, PDF (1/12 Pages) Estek Electronics Co. Ltd – Current Mode PWM Controller

ET- KA384x
Current Mode PWM Controller
‹ Description
The KA384x are fixed frequency
current mode PWM controller. They are
specially designed for off-line and DC to DC
converter applications with a minimal
external components.
Internally implemented circuits include
a trimmed oscillator for precise duty cycle
control, a temperature compensated
reference, high gain error amplifier, current
sensing comparator, and a high current
totem pole output ideally suited for driving a
power MOSFET. Protection circuitry
includes built under voltage lockout and
current limiting.
‹ Features
¾ Low Star-up and Operating Current
¾ High Current Totem Pole Output
¾ Under Voltage Lockout With Hysteresis
¾ Operating Frequency Up to 500KHz
‹ Applications
¾ Switching Mode Power Supplies
¾ Power Converters
‹ Pin Description
Block Diagram
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Copyright @ Estek Electronics Co., Ltd
Version 0.2
27 July 2011