CR6853
Electrical Characteristics (Ta=25°C unless otherwise noted, VDD = 16V)
Symbol
Parameter
Conditions
Min. Typ. Max. Unit
Supply Voltage (VDD Pin)
IST
Startup Current
3.0
3.0
1.2
0.8
20.0
ꢁA
mA
mA
mA
V
VFB=0V
ISS
Operating Current
VFB=3V
VFB=Open
VDDON
Turn-on Threshold Voltage
Turn-off Threshold Voltage
13.0 14.0 15.0
VDDOFF
7.8
8.8
9.8
V
VDDCLAMP VDD Clamp Voltage
IVDD=10mA
34.0
V
Anti Intermission Surge
VDDAIS
9.4
V
VDD Voltage
Voltage Feedback (FB Pin)
IFB
VFB
Short Circuit Current
VFB=0V
0.7
4.8
mA
V
Open Loop Voltage
VFB=Open
IFB_0D
IPFM
Zero Duty Cycle FB current
Enter PFM FB current
Enter CRM FB current
Enter PFM Threshold VFB
Enter CRM Threshold VFB
Enter OLP&SCP FB current
0.59
0.50
0.55
1.80
1.40
170
3.7
mA
mA
mA
V
ICRM
VPFM
VCRM
IOLP&SCP
V
uA
V
VOLP&SCP Enter OLP&SCP FB voltage
TOLP&SCP OLP&SCP min. delay Time
RI=100K
33
35
50
mS
Current Sensing (SEN Pin)
SEN Maximum Voltage Level
RI=100K,
FB=3.3V
RI=100K,
FB=3.3V
FB=3.3V
VTH_L
0.80
1.05
V
V
（Dmin=0%）
SEN Maximum Voltage
VTH_H
Level(Dmax=78%)
TPD
RCS
Delay to Output
Input Impedance
75
40
ns
Kꢁ
Leading edge blanking time
( LEB )
TLEB
RI=100K
300
nS
Oct, 2008 V2.0
4/12
Chengdu Chip-Rail Tech. Co., Ltd.
http://www.chiprail.com
ETC [ ETC ]
