参数资料
型号: SG6742MRSY
厂商: Fairchild Semiconductor
文件页数: 6/13页
文件大小: 0K
描述: IC CTRLR PWM GREEN CM OVP 8SOP
标准包装: 1
输出隔离: 隔离
频率范围: 62kHz ~ 68kHz
输入电压: 10.5 V ~ 22 V
输出电压: 18V
功率(瓦特): 400mW
工作温度: -40°C ~ 105°C
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
供应商设备封装: 8-SOP
包装: 标准包装
产品目录页面: 1222 (CN2011-ZH PDF)
其它名称: SG6742MRSYDKR
Electrical Characteristics (Continued)
V DD =15V and T A =25 ° C unless otherwise noted.
Symbol
Parameter
Conditions
Min.
Typ.
Max. Units
Feedback Input Section
A V
Input Voltage to Current-Sense Attenuation
1/4.5
1/4.0
1/3.5
V/V
Z FB
V FB-OPEN
Input Impedance
Output High Voltage
FB Pin Open
4
5.2
7
k ?
V
V FB-OLP
t D-OLP
V FB-N
V FB-G
V FB-ZDC
FB Open-Loop Trigger Level
Delay Time of FB Pin Open-Loop Protection
Green-Mode Entry FB Voltage
Green-Mode Ending FB Voltage
Zero Duty-Cycle Input Voltage
4.6
50
2.8
4.8
56
3.0
V FB-N - 0.6
1.6
5.0
62
3.2
V
ms
V
V
V
Current-Sense Section
Z SENSE
Input Impedance
12
K ?
V STHFL
Current Limit Flatten Threshold Voltage
0.87
0.90
0.93
V
V STHVA
t PD
Current Limit Valley Threshold Voltage
Delay to Output
V STHFL –V STHVA
0.30
0.34
100
0.38
200
V
ns
t LEB
V S-SCP
Leading-Edge Blanking Time
Threshold Voltage for SENSE Short-Circuit Protection
100
0.10
150
0.15
200
0.20
ns
V
t D-SSCP
t SS
Delay Time for SENSE Short-Circuit Protection
Period During Soft-Startup Time
V SENSE <0.15V
Startup Time
100
150
5
200
μs
ms
GATE Section
DCY MAX
Maximum Duty Cycle
60
65
70
%
V GATE-L
V GATE-H
Gate Low Voltage
Gate High Voltage
V DD =15V, I O =50mA
V DD =12V, I O =50mA
8
1.5
V
V
t r
t f
Gate Rising Time
Gate Falling Time
V DD =15V, C L =1nF
V DD =15V, C L =1nF
150
30
250
50
350
90
ns
ns
I GATE-
SOURCE
V GATE-
CLAMP
Gate Source Current
Gate Output Clamping Voltage
V DD =15V, GATE=6V
V DD =22V
250
18
mA
V
RT Section
I RT
V RTTH1
Output Current from RT Pin
0.7V < V RT <
1.05V, After 12ms
92
1.015
100
1.050
108
1.085
μA
V
Over-Temperature Protection Threshold Voltage Latch Off
V RTTH2
V RT < 0.7V, After
100μs Latch Off
0.65
0.70
0.75
V
t D-OTP1
t D-OTP2
Over-Temperature Latch-off Debounce
V RTTH2 < V RT <
V RTTH1
V RT < V RTTH2
8
40
12
100
16
160
ms
μs
Over-Temperature Protection Section (OTP)
T OTP
Protection Junction Temperature
(3)
+135
°C
T Restart
Restart Junction Temperature
(4)
T OTP -25
°C
Notes :
3. When activated, the output is disabled and the latch is turned off.
4. The threshold temperature for enabling the output again and resetting the latch after OTP has been activated.
? 2008 Fairchild Semiconductor Corporation
SG6742ML/MR ? Rev. 1.0.4
6
www.fairchildsemi.com
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