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Product Specification
Highly-Integrated Green-Mode PWM Controller
SG6846
© System General Corp.
- 4 -
www.sg.com.tw
Version 1.0(IAO33.0008.B0)
Sep. 30, 2004
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Test Condition
Value
Unit
VDD
Supply Voltage
25
V
VL
Input Voltage to VIN, FB, SENSE, RT, RI Pin
-0.3 to 7V
V
PD
Power Dissipation
at TA < 50°C
DIP
SOP
800
400
mW
RΘ J-C
Thermal Resistance
Junction-Case
DIP
SOP
67.1
41.2
°C/W
TJ
Operating Ambient Temperature
-40 to 125
°C
TSTG
Storage Temperature Range
-65 to +150
°C
TL
Lead Temperature (Soldering)
10 sec
DIP
10 sec
SOP
260
230
°C
*All voltage values, except differential voltages, are given with respect to GND pin.
*Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device.
RECOMMENDED OPERATING JUNCTION TEMPERATURE: -30°C ~ 85°C*
*For proper operation
ELECTRICAL CHARACTERISTICS (VDD = 15V, TA = 27°C, unless noted)
VDD Section
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
VOP
Continuously Operating Voltage
20
V
VTH-ON
On Threshold Voltage
15.5
16.5
17.5
V
VTH-OFF
Off Threshold Voltage
9.5
10.5
11.5
V
IDD-ST
Start-Up Current
VDD = 15V
8
30
uA
IDD-OP
Operating Supply Current
GATE Open
3.7
5
mA
VDD-OVP
VDD Over Voltage Protection (Latch off)
22.6
23.6
24.6
V
TVDD-OVP
VDD OVP Debounce Time
RI = 26KΩ
100
usec
IDD-OVP
VDD OVP Latch-up Holding Current
VDD = 5V, TA = 27
oC
45
uA
VDD-TH-G
VDD Low-threshold Voltage to Exit Green-OFF
Mode
VTH(OFF) +
1.25
V
VIN Section
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
VIN-OFF
PWM Turn-off Threshold Voltage
0.67
0.72
0.77
V
VIN-ON
PWM Turn-on Threshold Voltage
VIN-OFF +
0.2
V
Feedback Input Section
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
AV
Input-Voltage to Current-Sense Attenuation
1/4.2
V/V
ZFB
Input Impedance
4
5.5
7
KΩ
VFB0
FB Pin open voltage
6.2
V
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