Semiconductor
S3842
Current Mode PWM Controller
Descriptions
The S3842, high performance current mode controller, Provides the necessary features to
off-line and DC-DC fixed frequency current control applications offering the designer a cost
effective solution with minimal external components. Internally protection circuity includes
built-in input and reference under-voltage lockout and current limiting with hysteresis.
Also other characteristics of internal circuit provide improved line regulation, enhanced load
response, trimmed oscillation for precise duty cycle control, a temperature compensated
reference, high gain error amplifier, current sensing comparator and totempole output
designed to source and sink high peak current from a capacitive load such as the gate of a
power MOSFET.
Features
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Optimized for off-line control
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Low start up and operating current
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Pulse by pulse current limiting
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Enhanced load response characteristic
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Current mode operation to 500
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Under voltage lockout with 6V hysteresis
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Internally trimmed bandgap reference about 5V
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Automatic feed forward compensation
Ordering Information
Type NO.
S3842
Marking
S3842
Package Code
SOP-8
Outline Dimensions
unit :
mm
PIN Connections
1. Output / Compensation
2. Voltage feedback. Input
3. Current sense Input
4. Rt/Ct
5. GND
6. Output
7. Vcc
8. Vref
KSI-8006-003
1
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英文版
Current Mode PWM Controller
AUK
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英文版
Current Mode PWM Controller
AUK [AUK c...
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英文版
Current Mode PWM Controller
AUK
-
英文版
Current Mode PWM Controller
AUK [AUK c...
-
英文版
Current Mode PWM Controller
AUK
-
英文版
Current Mode PWM Controller
AUK [AUK c...
-
英文版
Current Mode PWM Controller
AUK
-
英文版
Current Mode PWM Controller
AUK [AUK c...
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