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FA551X
2
Maximum power dissipation curve
■ Absolute maximum ratings
Item
Symbol
Rating
Unit
Supply Voltage
Low impedance source (ICC>15mA)
VCC1
30
V
Internal zener clamp (ICC<15mA)
VCC2
Self limiting
V
Output peak current
IOUT
±1.5
A
FB pin input voltage
VFB
–0.3 to 5.0
V
IS pin input voltage
VIS
–0.3 to 5.0
V
REF pin source current
IREF
–10
mA
CS pin sink current
ICS
+2.0
mA
Total power dissipation (Ta=25˚C)
Pd
800 (DIP-8)
mW
400 (SOP-8)
Ambient temperature
Ta
–30 to +85
˚C
Maximum junction temperature
Tj
125
˚C
Storage temperature
Tstg
–40 to +150
˚C
Note: There are cases where the IC cannot output the rating current depending on Vcc voltage or temperature.
–30
25
85
125
0
Ambient temperature Ta [˚C]
400mW (SOP)
800mW (DIP)
■ Recommended operating conditions
Item
Symbol
Min.
Typ.
Max.
Unit
Supply voltage
VCC
10
28
V
Oscillation frequency
fOSC
10
500
kHz
REF-GND capacitor
Cref
0.1
0.47
µF
Soft start capacitor
CS
0.01
1
µF
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