SG6742HRSY Fairchild Semiconductor, SG6742HRSY Datasheet - Page 6

• Manufacturer Part Number: SG6742HRSY
• Description: IC CTRLR PWM PROG GREEN CM 8SOP
• Manufacturer: Fairchild Semiconductor

Specifications of SG6742HRSY

• Output Isolation: Isolated
• Frequency Range: 90 ~ 110kHz
• Voltage - Input: 9.5 ~ 30 V
• Voltage - Output: 18V
• Power (watts): 400mW
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Number Of Outputs: 1
• Duty Cycle (max): 70 %
• Output Voltage: 18 V
• Mounting Style: SMD/SMT
• Switching Frequency: 110 KHz
• Operating Supply Voltage: 30 V
• Supply Current: 2.7 mA
• Maximum Operating Temperature: + 105 C
• Fall Time: 50 ns
• Minimum Operating Temperature: - 40 C
• Rise Time: 250 ns
• Synchronous Pin: No
• Topology: Flyback Converter
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

© 2008 Fairchild Semiconductor Corporation
SG6742HL/HR • Rev. 1.0.4
Electrical Characteristics
V
Feedback Input Section
Current-Sense Section
GATE Section
RT Section
Over-Temperature Protection Section (OTP)
Notes:
3.
4.
Symbol
I
V
DCY
GATE-SINK
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
R
Z
STHVA
t
RTTH1
RTTH2
Restart
STHFL
S-SCP
GATE-
=15V and T
A
t
t
LEB
FB-N
FB-G
OTP
PD
SS
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
RT
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 Sink Current
Gate Output Clamping Voltage
Internal Resistor 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
FB Pin Open
Duty cycle=45%
V
V
Startup Time
V
V
V
V
V
V
V
0.7V ＜ V
After 12ms Latch Off
V
100µs Latch Off
V
V
STHFL
SENSE
DD
DD
DD
DD
DD
DD
DD
RT
RTTH2
RT
< V
=15V, I
=12V, I
=15V, C
=15V, C
=15V, GATE=6V
=15V, GATE=1V
=22V
＜ 0.7V, After
Conditions
–V
<0.15V
＜ V
RTTH2
STHVA
RT
O
O
RT
L
L
=50mA
=50mA
＜ 1.05V,
=1nF
=1nF
＜ V
RTTH1
1/4.15
10.08
1.015
Min.
0.97
0.27
0.10
0.65
100
100
150
250
300
4.6
3.1
50
60
30
16
90
4
5
8
T
1/4.00
V
10.50
1.050
Typ.
+135
OTP
1.00
0.30
0.15
0.70
100
140
150
250
130
5.2
4.8
3.3
1.6
FB-N
0.5
56
12
65
50
20
6
-25
-
1/3.85
Max. Units
10.92
1.085
1.03
0.33
0.20
0.75
200
180
200
350
170
5.0
3.5
1.5
62
70
90
18
24
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7
7
V/V
mA
mA
ms
KΩ
ms
KΩ
ms
kΩ
ns
ns
µs
ns
ns
µs
°C
°C
%
V
V
V
V
V
V
V
V
V
V
V
V
V