Read Harman Kardon DVD 37 (serv.man6) Service Manual online
Product Specification
Low Cost Green-Mode PWM Controller for Flyback Converters
SG6848
© System General Corp.
- 3 -
www.sg.com.tw
Version 1.2(IRO33.0010.B0)
May.06, 2003
BLOCK DIAGRAM
V
DD
2 (5)
RI
UVLO
16.3V/11.7V
Internal
Bias
Bias
_
+
OSC
5 (3)
R
Q
S
OCP
Comp
Comp
PWM
Comp
Comp
Slope
Compensation
Compensation
Vlimit
ramp
Green
Mode
Controller
Mode
Controller
ON/OFF
Driver
Driver
7 (2)
4.8V
FB
1 (6)
V
DD
SENSE
4 (4)
GATE
Blanking
Circuit
Circuit
8 (1)
GND
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter
Value
Unit
V
DD
DC Supply Voltage *
Zener Clamp
Zener Current
Zener Clamp
Zener Current
25
26
10
26
10
V
V
mA
V
mA
V
FB
Input Voltage to FB Pin
-0.3 to 6 V
V
V
Sense
Input Voltage to Sense Pin
-0.3 to 6V
V
P
d
Power
Dissipation
300
mW
T
J
Operating Junction Temperature
150
℃
SOT-26 208.4
°C/W
R
θ
JA
Thermal Resistance (Junction to Air)
DIP-8 82.5
°C/W
T
stg
Storage Temperature Range
-55 to +150
℃
T
L
Lead Temperature (Soldering)
20 sec SOT-26
10 sec DIP-8
10 sec DIP-8
220
260
260
°C
ESD Capability, HBM Model
3.0
kV
ESD Capability, Model
300
V
* All voltage values, except differential voltages, are given with respect to the network ground terminal.
harman/kardon
Service manual DVD37EU
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