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DESCRIPTION
Si9113 is a current mode PWM controller for ISDN power supplies. In a 14-pin SOIC package, it provides all necessary functions to implement a single-switch PWM with a minimum of external parts. To maximize the circuit integration, the Si9113 is designed with a 200-V depletion mode MOSFET capable of powering directly off the high input bus without an external start-up circuit. The Start and Stop input voltage thresholds can be programmed within the operating input voltage range by means of a resistor divider, provided +VIN (Start) > +VIN (Stop).
FEATURES
BiC/DMOS Technology
Current Mode Control
Max 50% Duty Cycle Operation
1.3-MHz Error Amp
Up to 500-kHz Internal Oscillator
Soft-Start
0.6-V Fast Over-Current Protection
<5-µA Supply Current for +VIN <18 V
23.5-V to 200-V Input Voltage Range
Programmable Start/Stop Capability
Internal Start-Up Circuit
Power_Good Output -
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Datasheet
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Shopping guide
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- Last Updated: 2024/10/01 00:16 +0800
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