FA531X series
s Selection guide
Type
FA5310BP(S)
FA5311BP(S)
FA5314P(S)
FA5315P(S)
FA5316P(S)
FA5317P(S)
Max. duty Polarity of overcurrent
UVLO (typ.)
Max. output Application
cycle (typ.) detection
ON threshold
OFF threshold current
46%
70%
46%
+
+
–
16.0V
16.0V
15.5V
8.70V
8.70V
8.40V
1.5A
1.5A
1.5A
Forward type
Flyback type
Forward type
70%
46%
70%
–
+
+
15.5V
15.5V
15.5V
8.40V
8.40V
8.40V
1.5A
1.0A
1.0A
Flyback type
Forward type
Flyback type
s Absolute maximum ratings
s Recommended operating conditions
Item
Symbol
Rating
Supply voltage
VCC
31
Output current
FA5310/11/14/15
FA5316/17
Feedback terminal input voltage
Overcurrent detection
terminal input voltage
IO
VFB
VIS
±1.5
±1.0
4
–0.3 to +4
CS terminal input current
Total power dissipation
(Ta=25°C)
Operating temperature
Junction temperature
ICS
Pd
Topr
Tj
2
800 (DIP-8) *1
550 (SOP-8) *2
–30 to +85
125
Storage temperature
Tstg
–40 to +150
Notes:
*1 Derating factor Ta > 25°C : 8.0mW/°C (on PC board )
*2 Derating factor Ta > 25°C : 5.5mW/°C (on PC board )
Unit
V
A
V
V
mA
mW
°C
°C
°C
Item
Supply voltage
Oscillator timing resistance
FA5310/11
FA5314/15/16/17
Soft-start capacitor
Oscillation frequency
Symbol Min. Max.
VCC 10 30
RT
CS
fOSC
3.3 10
1 10
0.1 1
5 600
Unit
V
kΩ
µF
kHz
s Electrical characteristics (Ta=25°C, Vcc=18V, fOSC=135kHz)
Oscillator section
Item
Oscillation frequency
Frequency variation 1 (due to supply voltage change)
Frequency variation 1 (due to temperature change)
Symbol
fOSC
fdV
fdr
Test condition
RT=5.1kΩ, CT=360pF
VCC=10 to 30V
Ta=–30 to +85°C
Min.
125
Typ.
135
±1
±1.5
Max.
145
Unit
kHz
%
%
Pulse width modulation circuit section
Item
Feedback terminal source current
Input threshold voltage (Pin 2)
Maximum duty cycle
Symbol
IFB
VTH FBO
VTH FBM
DMAX
Test condition FA5310/14/16
FA5311/15/17
Unit
Min. Typ. Max. Min. Typ. Max.
VFB=0
–660 –800 –960 –660 –800 –960 µA
Duty cycle =0%
0.75
0.75 V
Duty cycle =DMAX
1.80
2.30 V
43 46 49 66 70 74 %
Soft-start circuit section
Item
Charge current (Pin 8)
Input threshold voltage (Pin 8)
Symbol
ICHG
VTH CSO
VTH CSM
Test condition
Pin 8=0V
Duty cycle =0%
Duty cycle =DMAX
FA5310/14/16
FA5311/15/17
Unit
Min. Typ. Max. Min. Typ. Max.
–15 –10 –5 –15 –10 –5 µA
0.90 0.90 V
1.90 2.30 V
2
