RS2051 Orister Corporation, RS2051 Datasheet - Page 4

• Manufacturer Part Number: RS2051
• Description: Green?mode
• Manufacturer: Orister Corporation

Electrical Characteristics
Notice: The drive current of GATE pin is a variable value, which is decided by
coefficient，V
voltage is, the bigger the drive transient current is. When the GATE voltage is 0V and the VDD voltage is 13V, the output drive current
would over 120mA. The output driver current would decrease with increasing of the GATE voltage.
DS‐RS2051‐09 November, 2009
DC
VD
VG
Symbol
V
T
DC
F
VDD
I
VDD
VDD
∆f_osc
ΔF
OLP&SCP
T
I
V
OLP&SCP
V
JIGGLING
V
OLP&SCP
V
F
I
FB_0D
I
T
F
V
f
V
T
R
BLANK
V
Burst
MAX_W
T
T
T
T
T
T
T
T
CRM
Burst
I
I
I
Burst
TH_H
CLAMP
CRM
TH_L
MAX_F
CLAMP
EMI
OSC
LEB
TEMP
ST
SS
FB
PD
OH
R1
R2
R3
R4
FB
CS
OL
F1
F2
F3
F4
OFF
ON
AIS
GATE
Startup Current
Operating Current
Turn‐on Threshold Voltage
Turn‐off Threshold Voltage
VDD Clamp Voltage
Anti Intermission Surge VDD Voltage
Short Circuit Current
Open Loop Voltage
Zero Duty Cycle FB current
Enter Burst & PWM, FB current
Enter CRM, FB current
Burst Threshold V
Enter CRM Threshold V
Enter OLP&SCP FB current
Enter OLP&SCP FB voltage
OLP&SCP min. delay Time
Minimum Voltage Lever (D
Maximum Voltage Lever (D
Delay to Output
Input Impedance
Leading edge blanking time
Normal Frequency
Burst Frequency
Maximum Duty Cycle PWM
Maximum Duty Cycle Burst
Frequency Temp. Stability
Leading‐Edge Blanking Time
Frequency Jiggling
Output Low Level
Output High Level
Rising Time
Falling Time
Rising Time
Falling Time
Rising Time
Falling Time
Rising Time
Falling Time
Output Clamp Voltage
Low EMI frequency
Frequency modulation range / Base frequency
is the voltage of GATE pin, V
FB
Parameter
(V
FB
DD
MIN.
MAX.
=15V, T
= 0%)
= 78%)
VDD
is the voltage of VDD pin)；So the higher the VDD voltage is and the lower the output
A
=25°C, unless otherwise specified)
GATE Drive Output (GATE Pin)
Voltage Feedback (FB Pin)
Current Sensing (SEN Pin)
Supply Voltage (V
Frequency Jiggling
Oscillator (RI Pin)
DD
Pin)
V
V
Test Conditions
DD
DD
‐30 to 100
=16V, I
=16V, I
I
C
C
C
C
C
C
V
V
RI=100KΩ
RI=100KΩ
RI=100KΩ
RI=100KΩ
RI=100KΩ
RI=100KΩ
RI=100KΩ
RI=100KΩ
VDD
C
C
VDD=20V
L
L
L
L
L
L
= I
V
V
FB
V
FB
L
L
=1000pF
=1000pF
=1500pF
=1500pF
=2000pF
=2000pF
=500pF
=500pF
FB
FB
FB
=Open
=Open
=20mA
K
=0V
=3V
=0V
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
V (
O
O
=20mA
=20mA
VDD
o
C
-
V
GATE
-
2
) 8 .
Min.
13.0
7.8
33
60
10
‐4
‐3
2
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
(Among these, K is a invariable
Typ.
14.0
34.0
0.59
0.50
0.55
1.80
1.40
0.80
1.05
18.0
170
300
300
123
248
116
343
153
508
209
3.0
3.0
1.2
0.8
8.8
9.4
0.7
4.8
3.7
35
75
40
65
22
78
78
71
65
5
‐
‐
‐
‐
www.Orister.com
Max.
20.0
15.0
9.8
0.8
50
70
4
3
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
‐
Page No. : 4/12
Unit
KHz
KHZ
KHz
mA
mA
mA
mA
mA
μA
uA
ms
KΩ
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
%
%
%
%
%
V
V
V
V
V
V
V
V
V
V
V
V
V