FAN5631 데이터 시트보기 (PDF) - Fairchild Semiconductor
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FAN5631 Datasheet PDF : 14 Pages
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Electrical Characteristic
VIN = 2.2V to 5.5V, IOUT = 1mA, CIN = 10µF, COUT = 10µF, CB = 1µF, TA = -40°C to +85°C, unless otherwise noted.
Typical values are at TA = 25°C.
Symbol
Parameter
Conditions
Min. Typ.
VUVLO Input Under-voltage Lockout
2
No-load Supply Current
No Switching
FAN5631, SEL to High
1.5
FAN5631, SEL to Low
1.2
VOUT Output Voltage
FAN5632, SEL to High
FAN5632, SEL to Low
1.5
Variable
between
1.5 and 1.2
Output Voltage Accuracy
1mA ≤ IOUT ≤ 150mA, VIN=2.7V to
5.5V
-5
RLOAD
RLINE
ISD
ISC
Load Regulation
Line Regulation
Shutdown Supply Current
Output Short-circuit Current (3)
Peak Efficiency
0mA ≤ IOUT ≤ 150mA, VIN=3.6V
IOUT=0.1mA
VEN=0V
VOUT ≤ 150mA
0.25
0.2
0.1
25
90
FOSC
TSD
VIN at Configuration Change
Oscillator Frequency
Thermal Shutdown Threshold
VIN Decreasing
2.22xVOUT
1.5
150
TSDHYS
Thermal Shutdown Threshold
Hysteresis
15
VIH
Enable Logic Input High
Voltage
1.3
VIL
Enable Logic Input Low
Voltage
IEN Enable Logic Input Current
-1
VIH VSEL Logic Input High Voltage
1.3
Max.
60
+5
4.0
1.0
0.4
1
Units
V
µA
V
%
mV/mA
mV/V
µA
mA
%
V
MHz
°C
°C
V
V
µA
V
VIL VSEL Logic Input Low Voltage
0.4
V
IIN
VSEL Logic Input Current
-1
1
µA
tON
VOUT Turn-On Time
1.6
ms
Note:
3. The short-circuit protection is designed to protect against pre-existing short-circuit conditions, such as assembly
shorts, that exist prior to device power-up. The short-circuit current limit is 25mAAverage. Short-circuit currents in
normal operation are inherently limited by the on resistance of the internal FET. Since this resistance is in the
range of 1Ω, in some cases, thermal shutdown may occur. Immediately following the first thermal shutdown
event, the short-circuit condition is treated as pre-existing and the load current reduces to 25mAAverage.
© 2006 Fairchild Semiconductor Corporation
FAN5631/FAN5632 Rev. 1.0.2
5
www.fairchildsemi.com
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