参数资料
型号: SG6961DZ
厂商: Fairchild Semiconductor
文件页数: 7/14页
文件大小: 835K
描述: IC PWM CTLR PFC/FORWARD 8-DIP
标准包装: 59
模式: 平均电流
频率 - 开关: 50kHz
电流 - 启动: 10µA
电源电压: 12 V ~ 20 V
工作温度: -20°C ~ 125°C
安装类型: 通孔
封装/外壳: 8-DIP(0.300",7.62mm)
供应商设备封装: 8-DIP
包装: 管件
 
?2008 Fairchild Semiconductor Corporation
 
www.fairchildsemi.com
SG6961 " Rev. 1.3.2
7
Electrical Characteristics
V
CC
=15V, T
A
=25癈, unless otherwise specified.
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Units
Current-Sense Section
V
PK
 
Threshold Voltage for
Peak Current Limit Cycle-
by-Cycle Limit
 
0.77
0.82
0.87
V
t
PD
 
Propagation Delay
 
 
 
200
ns
t
LEB
 
Leading-Edge Blanking
Time
R
MOT
=24k&
 
400
500
ns
Gate Section 
V
ZOUT
 
Output Voltage Maximum
(Clamp)
V
CC
=20V
15.5
16.5
17.5
V
V
OL
 
Output Voltage Low
V
CC
=15V, I
O
=100mA
 
 
1.4
V
V
OH
 
Output Voltage High
V
CC
=14V, I
O
=100mA
8
 
 
V
t
R
 
Rising Time
VCC=12V, CL=3nF,
20~80%
50
80
160
ns
tF
Falling Time
V
CC
=12V, C
L
=3nF,
80~20%
30
40
70
Zero Current Detection Section
V
ZCD
 
Input Threshold Voltage
Rising Edge
V
ZCD
 Increasing
1.9
2.1
2.3
V
H
YS
 of V
ZCD
 
Threshold Voltage
Hysteresis
V
ZCD
 Decreasing
0.25
0.35
0.50
V
V
ZCD-HIGH
 
Upper Clamp Voltage
I
ZCD
=3mA
8
10
12
V
V
ZCD-LOW
 
Lower Clamp Voltage
I
ZCD
=-0.5mA
0
 
 
V
t
DEAD
 
Maximum Delay, ZCD to
Output Turn-On
V
COMP
=5V, f
SW
=60KHz
100
 
400
ns
t
RESTART
 
Restart Time
Output Turned Off by ZCD
300
500
700
t
INHIB
 
Inhibit Time (Maximum
Switching Frequency
Limit)
R
MOT
=24k&
1.5
2.5
3.0
V
DIS
 
Disable Threshold Voltage
200
250
300
mV
t
ZCD-DIS
 
Disable Function
Debounce Time
R
MOT
=24k&, V
ZCD
=100mV
800
 
 
Maximum On-Time Section
V
MOT
 
Maximum On Time
Voltage
 
1.25
1.30
1.35
V
t
ON-MAX
 
Maximum On Time
Programming
(Resistor Based)
RMOT=24k&, VCS=0V,
V
COMP
=5V
21
25
27
 
 
 
 
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