SG6841D Ver la hoja de datos (PDF) - Unspecified
Número de pieza
componentes Descripción
Fabricante
SG6841D Datasheet PDF : 14 Pages
| |||
High-integrated Green-mode PWM Controller
Current Sense Section
Symbol Parameter
ZCS
Input impedance
TPD
Delay to Output
VTH
Threshold voltage for current limit
Product Specification
SG6841
Test Condition
IVIN = 0 uA
Min.
8
0.8
Typ.
12
150
0.85
Max.
16
200
0.9
Unit
KΩ
ns
V
ΔVTH @ IVIN
The change of threshold voltage versus the input
current of the Vin
IVIN = 220 uA
-0.09
-0.15
-0.21
V
VSENSE0
Tdelay-lps
Threshold voltage for IVIN = 80uA
The delay time of limited-power-control
IVIN = 80 uA
RI=26KOhms
0.73
0.81
0.89
V
31
ms
Oscillator Section
Symbol Parameter
FOSC
Fosc-green
Frequency in nominal mode
Frequency in green mode
VG
End of green mode voltage at FB pin
VN
Beginning of frequency reducing at FB pin
SG
Slope for green mode modulation
FDV
Frequency variation versus VDD deviation
FDT
Frequency variation versus Temp. deviation
Test Condition
RI=26KOhms
RI=26KOhms
RI=26KOhms
VDD=10 to 20V
TA=-30 to 85 ℃
Min.
60
50
Typ.
65
10
1.4
2.1
80
Max.
70
16
120
5
5
Unit
KHz
KHz
V
V
Hz/mV
%
%
PWM Section
Symbol Parameter
DC (MAX)
DC (MIN)
Bnk
Maximum Duty Cycle
Minimum Duty Cycle
Leading edge blanking time
Test Condition
Min.
75
-
200
Typ.
80
-
270
Max.
90
0
350
Unit
%
%
ns
Output Section
Symbol Parameter
VOL
Output Voltage Low
VOH
Output Voltage High
tr
Rising Time
tf
Falling Time
Test Condition
VDD = 12V, Io = 150mA
VDD = 12V, Io = 50mA
VDD =13V, CL=1nF
VDD =13V, CL=1nF
Min.
8V
150
30
Typ.
250
50
Max.
1.5
350
90
Unit
V
V
ns
ns
Under-voltage Lockout Section
Symbol Parameter
VTH(ON)
Start Threshold Voltage
VDD(min)
Min. Operating Voltage
Test Condition
Min.
15
9
Typ.
16
10
Max. Unit
17
V
11
V
©System General Corp.
-5-
Version 2.1 (IRO33.0001.B5)
www.sg.com.tw
Jun.15,2006
Share Link: 