RS2201S Orister Corporation, RS2201S Datasheet - Page 3

• Manufacturer Part Number: RS2201S
• Description: Switching Power Supply Controller
• Manufacturer: Orister Corporation

Page No. : 3/3
Fig.1 OPEN/CLOSED CYCLE WAVES IN NORMAL OPERATION
Electrical parameter definition
Start-up accept current: OE node current when OB has a 0.1mA pull-down current in start-up phase.
Start-up static current: VCC connects to filter capacitor and adjustable current source, CT connects to 680PF，other pins
are floating. It is the minimum current that could oscillate the VCC.
Start-up voltage: The max. value of VCC oscillation above.
Restart voltage: The min. value of VCC oscillation above.
Voltage of Oscillator is turn off: VCC value, which stops the oscillator in falling time of VCC oscillation above.
Static current: In normal operation, FB connects to the grand through 1.8K resistor. VCC power supply current.
The pull-up/ pull-down current of oscillator: In normal operation, FB=2.5V,CT=1.25V, pull-up /pull-down current on CT.
Fig.2 RS2201 ALL SIGNAL WAVES
DS-RS2201-01
Nov, 2007
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