FA5590 데이터 시트보기 (PDF) - Fuji Electric
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FA5590 Datasheet PDF : 21 Pages
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FA5590N,FA5591N
(3)Electrical Characteristics (Unless otherwise specified, Ta=25°C、Vcc=12V、Rrt=82kΩ、
Rrtzc=56kΩ)
ERROR AMPLIFIER (FB,COMP Pin)
Item
Symbol
Voltage Feedback
Threshold
Input Vfb
Line Regulation
Regline
Condition
Vcc=10V to 26V
MIN
2.465
-20
TYP
2.500
-10
MAX
2.535
-
Unit
V
mV
Temperature stability
Transconductance
Output Current
VdT
Tj=-30°C to +85°C
Gm
50
Io
Source:V(FB)=1.0V 20
Sink:V(FB)=4.0V
-30
±0.5
75
100
40
60
-50
-70
mV/°C
µmho
µA
RAMP OSCILLATOR (RT Pin)
Item
Symbol
Maximum on range
Maximum on range
(Soft start)
Maximum oscillating frequency
RT output voltage
Tonmax
Tonmax_
soft-start
Fmax
Vrt
Condition
V(COMP)=5.0V
V(FB)=Vfb
V(COMP)=5.0V
V(FB)=1.0V
V(COMP)=1.0V
MIN
20
300
0.90
TYP
26
20
360
1.15
MAX
32
420
1.40
Unit
us
us
kHz
V
PWM comparator (COMP Pin)
Item
Symbol
Input threshold voltage
Vthcomp
Condition
MIN
0.6
TYP
0.7
MAX
0.8
Unit
V
SOFT START (FB Pin)
Item
Soft start cancellation voltage
Symbol
Vthsoft
Condition
V(COMP)=5.0V
Ton>Tonmax*90%
MIN
TYP
0.95Vfb
MAX
Unit
V
OVERVOLTAGE COMPARATER (FB Pin)
Item
Symbol
Condition
Static OVP threshold voltage
Vsovph
Vsovpl
V(FB)=2.5V→3.0V
V(FB)=3.0V→2.5V
Dynamic OVP
threshold voltage
Vsovphys
Vdovp
Vsovph-Vsovpl
V(FB)=2.5V→3.0V
Ton=Tonmax*70%
MIN
1.070*Vfb
1.025*Vfb
0.020*Vfb
1.025*Vfb
TYP
1.09*Vfb
1.045*Vfb
0.040*Vfb
1.050*Vfb
MAX
1.105*Vfb
1.065*Vfb
0.060*Vfb
1.075*Vfb
Unit
V
V
V
V
FB SHORT COMPARATOR (FB Pin)
Item
Symbol
Input threshold voltage
Pull-up current
Vthfb
Ipullup
Condition
V(FB)=2.5V
MIN
0.1
1.2
TYP
0.3
1.8
MAX
0.5
2.4
Unit
V
µA
CURRENT SENSE COMPARATOR (IS Pin)
Item
Symbol
Condition
IS threshold voltage
Vthis
IS threshold voltage
temperature characteristics
Output delay
Zero current detection voltage
Zero current detection delay
Vthisdt
Tphl
Vzcd
Tzcd
Tj=-30°C to +85°C
RTZC output voltage
Vrtzc
MIN
-0.58
-1.5
-
-15.0
1.0
0.90
TYP
-0.60
200
-10.0
1.5
1.15
MAX
-0.62
1.5
500
-5.0
2.0
1.40
Unit
V
%
ns
mV
us
V
Fuji Electric Co., Ltd.
AN-016E Rev.1.2
April-2011
7
http://www.fujielectric.co.jp/products/semiconductor/
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