FA5502P/M
(3) Electrical Characteristics (Unless otherwise specified, Vcc=Vc=18V, Ta=25°C, CT=470pF, RT=22kΩ)
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Reference voltage section
(REF pin)
Item
Symbol
VREF
Vrdv
Condition
MIN
4.8
TYP
5
MAX
5.2
Unit
V
Output voltage
Line regulation
Load regulation
Temperature stability
Vcc=10 to 28V
±25
mV
Vrdi
ILoad=0.1 to 2mA
-50
-25
±0.5
mV
mV/°C
VrdT
Ta=-30 to 105°C
Oscillator section
(CT, SYNC pin)
Item
Symbol
Condition
MIN
71
TYP
78
MAX
85
Unit
kHz
CT=470pF,
Oscillation frequency
fOSC
RT=22kΩ, Ta=25°C
Vcc=10 to 28V
Ta=-30 to +105°C
Voltage stability
fdv
±1
±3
%
Temperature stability
Output peak voltage
Synchronizing input
threshold voltage
fdT
±0.04
3.4
±0.07
%/°C
V
VOSC
VTHSYNC
ISYNC
SYNC pin voltage
SYNC pin=2V
1.0
75
1.5
2.0
V
SYNC pin input current
125
175
µA
Pulse width modulation circuit section
(OUT pin)
Item
Symbol
DMAX
Condition
MIN
91
TYP
94
MAX
97
Unit
%
Maximum duty cycle
Overcurrent limiter circuit section
(IDET pin)
Item
Symbol
VTHOCP
TpdOCP
Condition
IDET pin voltage
MIN
-1.20
TYP
-1.10
150
MAX
-1.00
Unit
V
Input threshold voltage
Delay time
ns
Soft start circuit section
Item
Charge current
(CS pin)
Symbol
ICHG
VTHCS0
VTHCSM
Condition
CS pin=0V
Dutycycle=0%
Dutycycle=DMAX
MIN
MIN
TYP
-11
0.34
3.40
MAX
Unit
µA
V
Input threshold voltage
V
Output ON/OFF control circuit section
(ON/OFF pin)
Item
Symbol
ITHON
Condition
TYP
MAX
±500
4.35
3.20
Unit
nA
V
On-state input current
ON/OFF control
ON/OFF pin=VTHON
OFF→ON
VTHON
VTHOFF
3.55
2.40
3.95
2.80
threshold voltage
ON→OFF
V
Voltage error amplifier section
(VIN-, VFB pin)
Item
Symbol
Vr
Condition
MIN
TYP
1.550
±0.5
±0.2
MAX
Unit
V
Reference voltage
Line regulation
Temperature stability
Input bias current
Open loop gain
1.519
1.581
Vredv
VredT
Vcc=10 to 28V
Ta=-30 to 105°C
mV
mV/°C
nA
IBE
±500
200
Ave
VOE+
VOE-
IOE+
IOE-
60
dB
No load
3.7
4.1
50
V
Output voltage
No load
mV
mA
µA
Output source current
Output sink current
VFB pin=0V
VFB pin=2V
-2.8
280
7
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