FA7703 Datasheet, PDF (6/21 Pages) Fuji Electric – FUJI Power Supply Control IC

FA7703/04
FA7703/7704
7. Ratings and characteristics
The contents are subject to change without notice. When using a product, be sure to obtain the latest
specifications.
(1)Absolute maximum ratings
Item
Symbol
Ratings
Units
Power supply voltage
FA7703
FA7704
VCC
30
20
V
REF Terminal output current
IREF
1
mA
REG Terminal output current
IREG
2
mA
OUT1, OUT2 Terminal source current ISOpeak
-400(peak)
mA
ISOcont
-50(continuos)
mA
OUT1, OUT2 Terminal sink current
ISIpeak
+150(peak)
mA
ISIcont
+50(continuos)
mA
RT,CS,REG,REF,IN1-,IN2+,IN2-,FB1,
FB2,DT1,DT2,SEL1 Terminal voltage
VLOGIC
+2.5(max.)
-0.3(min.)
V
Power dissipation
(Ta≤25°C)*
TSSOP
SOP
Pd
300
400
mW
Operating ambient temperature
Ta
-30 to +85
°C
Operating junction temperature
Tj
+125
°C
Storage temperature
Tstg
-40 to +150
°C
*:Maximum dissipation curve at Ta≥25°C is shown under figure.
Maximum power dissipation curve
500
SOP
400
300
TSSO
200
100
0
-30
0
30
60
90
120
150
Ambient temperature Ta[°C]
(2)Recommended operating conditions
Item
Symbol MIN.
TYP.
MAX.
Units
Supply voltage
FA7703
FA7704
DC feedback resistor of
error amplifier
VCC terminal capacitance*
REG terminal capacitance
CS terminal capacitance
Oscillation frequency
SEL1 terminal Pch,PNP driving
voltage
Nch,NPN driving
Vcc
RNF
CVCC
CREG
CCS
fOSC
VSEL1L
VSEL1H
2.5
2.5
6
6
28
18
V
100
kΩ
0.1
μF
0.047
0.1
1
μF
0.01
10
μF
50
1000
kHz
Connect to GND
Connect to REG terminal
*Please select the proper value by input-output conditions of power supply.
Fuji Electric Systems Co., Ltd.
AN-057E Rev.1.0
Jun-2010
6
http://www.fujielectric.co.jp/fdt/scd/