FA551 Datasheet, PDF (4/22 Pages) List of Unclassifed Manufacturers – CMOS IC For Switching Power Supply Control

FA551X
Latch-mode cutoff circuit section (CS pin)
Item
Sink current (CS pin)
Cutoff threshold voltage (CS pin)
Hysteresis voltage
Symbol
ISICS
VTH CSF
VTH CSN
VTHHIS
Test condition
VCS=6.5V, VFB=1V, Tj=25˚C
ON→OFF, Tj=25˚C
OFF→ON, Tj=25˚C
Min.
18
8.0
7.4
Typ.
30
8.5
7.9
0.6
Max. Unit
45
µA
9.0
V
8.4
V
V
Overload cutoff circuit section (FB pin)
Item
Overload threshold voltage (FB pin)
Symbol
VTH FB
Test condition
Min.
3.2
Typ.
3.5
Max. Unit
3.8
V
Overvoltage cutoff circuit section (VCC pin)
Item
Overvoltage threshold voltage (VCC pin)
Cutoff operating supply current (VCC pin)
Charge current (CS pin)
Symbol
VTH VCC
IVCC
IS0CS2
Test condition
Tj=25˚C
Tj=25˚C, VCC=VTHVCC
VCS=6.5V
Min.
30
–1.4
Typ. Max. Unit
31.8 34
V
14
mA
–0.95 –0.5 mA
Undervoltage lockout circuit section (VCC pin)
Item
OFF-to-ON threshold voltage
ON-to-OFF threshold voltage
Hysteresis voltage
Symbol
VCC ON
VCC OFF
VHYS
Test condition
Tj=25˚C
Tj=25˚C
Tj=25˚C
Min.
15.5
8.5
6.8
Typ.
16.5
9.0
7.5
Max. Unit
17.5 V
10.0 V
8.2
V
Output circuit section (OUT pin)
Item
Low output voltage
High output voltage
Rise time
Fall time
Symbol
VOL
VOH
tr
tf
Test condition
IOL=100mA
IOH=–100mA, VCC=18V
CL=1nF
CL=1nF
Min.
15
Typ.
0.7
16.5
40
25
Max. Unit
1.5
V
V
ns
ns
Supply current (VCC pin)
Item
Stand-by current
Startup current
Operating-state supply current
OFF-state supply current
Latch mode supply current
Symbol
ICCSTB
ICCST
ICCOP
ICCOF
ICCL
Test condition
VCC=14V
VCC=OFF-to-ON threshold voltage
No load
VCC=17V, CS=0V
VCC=10V
Min.
Typ.
12
1.5
80
45
Max. Unit
2
µA
30
µA
2.5
mA
200
µA
80
µA
4