FA531X series
2
I
Selection guide
Type
FA5310BP(S)
46%
+
16.0V
8.70V
1.5A
Forward type
FA5311BP(S)
70%
+
16.0V
8.70V
1.5A
Flyback type
FA5314P(S)
46%
–
15.5V
8.40V
1.5A
Forward type
FA5315P(S)
70%
–
15.5V
8.40V
1.5A
Flyback type
FA5316P(S)
46%
+
15.5V
8.40V
1.0A
Forward type
FA5317P(S)
70%
+
15.5V
8.40V
1.0A
Flyback type
Max. duty
cycle (typ.)
Polarity of overcurrent
detection
Max. output
current
UVLO (typ.)
Application
ON threshold
OFF threshold
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 )
I
Absolute maximum ratings
Item
Symbol
V
CC
Rating
Unit
Supply voltage
31
V
Output current
FA5310/11/14/15
FA5316/17
I
O
±
1.5
±
1.0
4
A
Feedback terminal input voltage
V
FB
V
IS
V
Overcurrent detection
terminal input voltage
–0.3 to +4
V
CS terminal input current
I
CS
P
d
2
800 (DIP-8) *
1
550 (SOP-8) *
2
mA
Total power dissipation
(Ta=25
°
C)
Operating temperature
mW
T
opr
T
j
T
stg
–30 to +85
°
C
°
C
°
C
Junction temperature
125
Storage temperature
–40 to +150
I
Recommended operating conditions
Item
Symbol
V
CC
Min.
Max.
Unit
Supply voltage
10
30
V
Oscillator timing resistance
FA5310/11
FA5314/15/16/17
R
T
3.3
1
10
10
k
Soft-start capacitor
C
S
f
OSC
0.1
1
μ
F
kHz
Oscillation frequency
5
600
Soft-start circuit section
Item
Symbol
Test condition
FA5310/14/16
FA5311/15/17
Unit
Min.
Typ.
Max.
Min.
Typ.
Max.
Charge current (Pin 8)
I
CHG
V
TH CSO
V
TH CSM
Pin 8=0V
–15
–10
–5
–15
–10
–5
μ
A
Input threshold voltage (Pin 8)
Duty cycle =0%
Duty cycle =
D
MAX
0.90
0.90
V
1.90
2.30
V
I
Electrical characteristics
(Ta=25
°
C, Vcc=18V, f
OSC
=135kHz)
Oscillator section
Item
Symbol
f
OSC
f
dV
f
dr
Test condition
R
T
=5.1k
,
C
T
=360pF
V
CC
=10 to 30V
Ta=–30 to +85
°
C
Min.
Typ.
Max.
Unit
Oscillation frequency
125
135
145
kHz
Frequency variation 1 (due to supply voltage change)
±
1
±
1.5
%
Frequency variation 1 (due to temperature change)
%
Pulse width modulation circuit section
Item
Symbol
Test condition
FA5310/14/16
FA5311/15/17
Unit
Min.
Typ.
Max.
Min.
Typ.
Max.
Feedback terminal source current
I
FB
V
TH FBO
V
TH FBM
D
MAX
V
FB
=0
Duty cycle =0%
Duty cycle =
D
MAX
–660
–800
–960
–660
–800
–960
μ
A
V
Input threshold voltage (Pin 2)
0.75
0.75
1.80
2.30
V
Maximum duty cycle
43
46
49
66
70
74
%