FA7711V Datasheet, PDF (8/25 Pages) Fuji Electric – FUJI Power Supply Control IC

FA7711V
(5)Pulse width modulation section (FB1，FB2，FB3 pin)
Item
Symbol
Condition
Threshold voltage (FB3)
(Driving Nch-MOSFET)
Threshold voltage (FB1/3)
(Driving Pch-MOSFET)
Threshold voltage (FB2)
(Driving Nch-MOSFET)
Threshold voltage (FB2)
(Driving Pch-MOSFET)
VFB3D20N
VFB3D80N
VFB1/3D20P
VFB1/3D80P
VFB2D20N
VFB2D80N
VFB2D20P
VFB2D80P
DUTY3=20%,VCS3=VREF
DUTY3=80%,VCS3=VREF
DUTY1/3=20%,VCS1/3=VREF
DUTY1/3=80%,VCS1/3=VREF
DUTY2=20%,VCS2=0V
DUTY2=80%,VCS2=0V
DUTY2=20%,VCS2=0V
DUTY2=80%,VCS2=0V
MIN. TYP. MAX. Unit
1.5
V
2.1
V
1.5
V
2.1
V
2.1
V
1.5
V
2.1
V
1.5
V
(6)Under voltage lockout section (VCC pin)
Item
Symbol
ON threshold voltage of VCC
Hysteresis voltage
VUVLOON
VUVLOHYS
Condition
MIN. TYP. MAX. Unit
2.6
3.3
4.0
V
0.1
V
(7)Timer latch protection section (CP pin)
Item
Threshold voltage of FB1
Symbol
VTHFB1ON
*7-1
Condition
MIN. TYP. MAX. Unit
2.8
3.0
3.2
V
Threshold voltage of FB2 _{VTHFB2ON *7-2}
0.4
0.6
0.8
V
Threshold voltage of FB3 _{VTHFB3ON *7-3}
2.8
3.0
3.2
V
Charge current of CP
ICP
VCP=0.5V,VFB1=VREF- 0.5V
- 3.5 - 2.5 - 1.5
μA
Threshold voltage of CP _VTHCPON
2.8
3.0
3.2
V
*7-1:The current source of the CP pin operates when the voltage of FB1 exceeds the threshold voltage as shown in the table
*7-2:The current source of the CP pin operates when the voltage of FB2 fall below the threshold voltage as shown in the table
*7-3:The current source of the CP pin operates when the voltage of FB3 exceeds the threshold voltage as shown in the table
Fuji Electric Systems Co., Ltd.
AN-060E Rev.1.0
8
Jun-2010
http://www.fujielectric.co.jp/fdt/scd/