RS2201P Orister Corporation, RS2201P Datasheet - Page 4

• Manufacturer Part Number: RS2201P
• Description: Switching Power Supply Controller
• Manufacturer: Orister Corporation

Electrical Characteristics
DS-RS2201-01
FB pull-up current: In normal operation, when FB=2.5V,IS=0V, pull up current on FB.
FB protecting upper limit current: In normal operation, FB=2.5V,IS=0.8V，pull down current on FB.
Internal feedback power supply voltage: In normal operation, VCC value of RS2201 power supply without external standby
feedback circuit.
IS upper limit current: FB=2.5V，external adjustable power supply to IS, there is minimal IS voltage of pull-down current on
FB.
Slope current drive: OB open current is IS function, when IS=0V,OB open current is about 40mA, and OB open current is
increasing with IS linear increasing. When IS increases 0.6V, OB open current is about 120mA.
OSC Frequency
Symbol
Fosc
Ics
Icc
VR
Nov, 2007
: C function of CT pin external capacitor, is about C*24000 seconds.
FB prevent upper limit current
Oscillator pull-down current
Oscillator pull-up current
Oscillator cut off voltage
Start-up accept current
Inner oscillator voltage
Start-up static current
FB Feedback Voltage
VR reference voltage
Maximum Duty Cycle
Oscillator Frequency
IS upper limit current
OE Clamp Voltage
Operating Current
OB closed current
OB closed current
FB pull-up current
OE output current
OB open current
OB open current
Start-up voltage
Restart voltage
Parameter
R IS-GND =0.75Ω
IS=0.5V,CT=0.6V
FB=2.5V,IS=0.8V
OE=0.001~1.2A
FB=2.5V,IS=0V
OB-IS=0.25V
OE-IS=0.6V
Conditions
CT=680PF
CT*24000
CT=1.25V
CT=1.25V
OB-IS=1V
VCC=8V
IS=0.5V
IS=0.0V
Min.
-145
4.25
0.54
102
1.6
7.6
9.6
2.4
53
32
Typ.
4.50
10.0
0.60
-210
100
120
-4.5
-1.2
590
310
2.0
7.8
4.0
3.5
2.5
1.9
4.8
1.6
55
64
55
44
Max.
4.75
10.4
0.62
-230
140
2.4
8.0
2.6
80
61
60
-6
-1
www.Orister.com
Unit
KHz
mA
mA
mA
mA
mA
mA
mA
uA
uA
uA
uA
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