SG6840 ETC, SG6840 Datasheet - Page 3

• Manufacturer Part Number: SG6840
• Description: HIGH INTEGRATED PWM CONTROLLER
• Manufacturer: ETC

w w w . D a t a S h e e t 4 U . c o m
2002 System General Corporation
SG6840
ELECTRCIAL CHARACTERISTICS(VDD=15V, TA=25)
Feedback Input Section
Note: All voltage values, except differential voltage, are with respect to network ground terminal.
Current Sense Section
Oscillator Section
ABSOLUTE MAXIMUM RATINGS
Fosc-green
∆Vth @ Iin
Symbol
Symbol
Symbol
Symbol
V
VDD
Fosc
Tstg
Voz
Iout
Zcs
Fdv
V
Zfb
T
Vth
Fdt
Pd
Av
Ifb
Vg
Vn
Sg
Sense
T
T
PD
FB
J
A
Input-voltage to current-sense attenuation
Frequency variation versus VDD deviation
Frequency variation versus Temp. devia-
The change of threshold voltage versus
Normal mode voltage (Vn = Vfb - Vd)
Green mode voltage (Vg = Vfb - Vd)
Input voltage for zero duty cycle
Threshold voltage for current limit
Slope for green mode modulation
Vn = 4 V for maximum duty cycle
the input current of the Vin
Frequency in green mode
Input impedance
Input impedance
Delay to Output
Bias current
Parameter
Parameter
Parameter
Frequency
Operating Junction Temperature
Operating Ambient Temperature
Storage Temperature Range
DC Supply Voltage – note 1
tion
Input Voltage to Sense Pin
Input Voltage to FB Pin
Gate Output Current
Power Dissipation
Parameter
- 3 -
Ver1.0
Test Condition
Test Condition
Test Condition
TA=-25 to 85 ℃
VDD=10 to 20V
Ri=26KOhms
Ri=26KOhms
Ri=26KOhms
Iin = 220 uA
1/4.5
Min.
Min.
Min.
-0.09
3
0.8
1.7
60
50
8
-55 to +150
-0.3 to 7 V
-0.3 to 7V
-25 to 85
Value
500
150
20
Typ.
Typ.
Typ.
-0.15
1
1/5
4.5
0.85
150
1.3
12
65
10
80
2
Product Specification
http://www.sg.com.tw
1/5.5
Max.
Max.
Max.
-0.21
1.2
120
200
2.3
0.9
70
15
6
2
16
5
5
Unit
。C
。C
。C
mA
Unit
W
Unit
mV
V
V
V
V/V
Unit
mA
KHz
KHz
KΩ
Hz/
V
KΩ
%
%
nS
V
V
V
V