FA7700V データシートの表示（PDF） - Fuji Electric
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FA7700V Datasheet PDF : 19 Pages
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(3) Electrical characteristics
(Unless otherwise standard, Ta=25℃,Vcc=6V,RT=22kΩ)
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(1)Internal Bias Section (REF terminal voltage)
Item
Symbol
Conditions
Output Voltage
VREF
REF terminal source current
IREF = 0mA
Line Regulation
VLINE Vcc = 2.5 to 20V，IREF = 0mA
Load Regulation
VLOAD IREF = 0 to 2mA
Variation
VTC1 Ta = -30 to 25℃
with temperature
VTC2 Ta = 25 to 85℃
MIN.
2.16
TYP.
2.23
±2
±2
±0.3
±0.3
MAX.
2.30
±14
±12
Units
V
mV
mV
%
%
(2)Oscillator Section (Frequency set by RT terminal )
Item
Symbol
Conditions
Oscillation
frequency
fosc
RT = 22kΩ
Line Regulation
fLINE Vcc = 2.5 to 20V
Variation
fTC1 Ta = -30 to 25℃, 50k to 1MHz
with temperature
fTC2 Ta = 25 to 85℃, 50k to 1MHz
MIN.
155
TYP.
185
±0.1
±2
±3
MAX.
215
Units
kHz
%
%
%
(3)Error Amplifier Section (IN- terminal , FB terminal ）
Item
Symbol
Conditions
Reference Voltage
VB
IN- terminal, FB terminal
:shorted (Voltage Follower)
Input current
IIN-
“VB”
Line Regulation
VBLINE Vcc = 2.5 to 20V
“VB” variation
VBTC1 Ta = -30 to 25℃
with temperature
VBTC2 Ta = 25 to 85℃
Open Loop Gain
AVO
Unity Gain
Bandwidth
fT
Output Source IOHE FB terminal = VREF- 0.5V
Current Sink
IOLE FB terminal = 0.5V
MIN.
0.863
-500
70
-220
3
TYP.
0.880
±1
±0.3
±0.3
1.5
-160
6
MAX.
0.897
+500
±5
-100
12
Units
Ｖ
nA
mV
%
%
dB
MHz
μA
mA
(4)Pulse Width Modulation (PWM) Section (FB terminal voltage and Duty Cycle)
Item
Symbol
Conditions
MIN.
FB 0% threshold
VFB0 Duty Cycle = 0%
0.560
FB 50% threshold
VFB50 Duty Cycle = 50%
DMAX1 RT = 100kΩ,ｆ≒ 50kHz
85
Maximum FA7700
Duty
DMAX2 RT = 22kΩ,ｆ≒185kHz
83
Cycle
DMAX3 RT = 3kΩ,ｆ≒1MHz
80
FA7701 DMAX
100
TYP.
0.660
0.880
90
88
86
MAX.
0.760
95
93
92
Units
Ｖ
Ｖ
%
%
%
%
(5)Under Voltage Lock-Out Section (VCC terminal voltage)
Item
Symbol
Conditions
ON threshold
VCCON
OFF threshold
VCCOF
Hysteresis Voltage
VCCHY
Variation with
temperature
VCCHY
Ta = -30 to 25℃
Ta = 25 to 85℃
MIN.
1.60
0.04
TYP.
2.07
1.93
0.14
＋0.2
−0.2
MAX.
2.30
0.24
Units
Ｖ
Ｖ
Ｖ
mV/℃
mV/℃
7
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