sg6742ml Fairchild Semiconductor, sg6742ml Datasheet - Page 6

• Manufacturer Part Number: sg6742ml
• Description: Sg6742ml/mr Highly Integrated Green-mode Pwm Controlle
• Manufacturer: Fairchild Semiconductor

© 2008 Fairchild Semiconductor Corporation
SG6742ML/MR • Rev. 1.0.3
Electrical Characteristics
V
Feedback Input Section
Current-Sense Section
GATE Section
RT Section
Over-Temperature Protection Section (OTP)
Notes:
3.
4.
Symbol
V
DCY
DD
V
V
V
V
Z
V
V
t
SOURCE
V
V
t
t
T
V
V
FB-OPEN
t
V
V
D-SSCP
I
CLAMP
D-OTP1
D-OTP2
T
GATE-H
FB-OLP
D-OLP
FB-ZDC
GATE-L
GATE-
SENSE
Z
STHVA
t
RTTH1
RTTH2
Restart
STHFL
S-SCP
GATE-
=15V and T
A
t
t
I
LEB
FB-N
FB-G
OTP
PD
SS
RT
t
t
When activated, the output is disabled and the latch is turned off.
The threshold temperature for enabling the output again and resetting the latch after OTP has been activated.
FB
r
f
V
MAX
Input Voltage to Current-Sense Attenuation
Input Impedance
Output High Voltage
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
Input Impedance
Current Limit Flatten Threshold Voltage
Current Limit Valley Threshold Voltage
Delay to Output
Leading-Edge Blanking Time
Threshold Voltage for SENSE Short-Circuit Protection
Delay Time for SENSE Short-Circuit Protection
Period During Soft-Startup Time
Maximum Duty Cycle
Gate Low Voltage
Gate High Voltage
Gate Rising Time
Gate Falling Time
Gate Source Current
Gate Output Clamping Voltage
Output Current from RT Pin
Over-Temperature Protection Threshold Voltage
Over-Temperature Latch-off Debounce
Protection Junction Temperature
Restart Junction Temperature
A
=25°C unless otherwise noted.
Parameter
(Continued)
(4)
(3)
6
V
V
V
V
V
V
V
FB Pin Open
V
Startup Time
0.7V ＜ V
1.05V, After 12ms
Latch Off
V
100µs Latch Off
V
V
V
STHFL
DD
DD
DD
DD
DD
DD
SENSE
RT
RTTH2
RTTH1
RT
=15V, I
=12V, I
=15V, C
=15V, C
=15V, GATE=6V
=22V
< V
Conditions
＜ 0.7V, After
–V
<0.15V
＜ V
RTTH2
STHVA
RT
O
O
RT
L
L
=50mA
=50mA
＜
=1nF
=1nF
＜
1.015
Min.
1/4.5
0.87
0.30
0.10
0.65
100
100
150
250
4.6
2.8
50
60
30
92
40
4
8
8
V
T
FB-N
1.050
Typ.
1/4.0
+135
OTP
0.90
0.34
0.15
0.70
100
150
150
250
100
100
5.2
4.8
3.0
1.6
56
12
65
50
12
5
-
-25
0.6
Max. Units
1.085
1/3.5
0.93
0.38
0.20
0.75
200
200
200
350
108
160
5.0
3.2
1.5
www.fairchildsemi.com
62
70
90
18
16
7
V/V
mA
ms
KΩ
ms
ms
kΩ
µA
ns
ns
µs
ns
ns
µs
°C
°C
%
V
V
V
V
V
V
V
V
V
V
V
V
V