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AT1308
Preliminary Product Information
Micro-Power Step up DC-DC Converter
2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
WWW: http://www.aimtron.com.tw
Fax: 886-3-563-0879
Email: service@aimtron.com.tw
3
Rev A ; 01/18/05
Recommended Operation Conditions
Electrical Characteristics
(VIN=2.5V, Ta=+25℃, unless otherwise noted)
Values
Parameter
Symbol
Min.
Typ.
Max.
Unit
Power supply voltage
VIN
2.5
―
6.0
V
Operating temperature
Top
-20
+25
+85
℃
Parameter
Symbol
Test Condition
Min. Typ. Max. Units
Operating V
IN Range
VIN
V
IN input Voltage
2.5
-
6.0
V
Under Voltage Thershold
UVLO
VIN falling, 100mV hysteresis
-
2.2
-
V
Switch- Off Input Current
IIN1
No Switching
-
100
120
uA
Shutdown Current
IIN3
EN=0V
-
-
1
uA
Feedback Reference
VFB
1.212 1.23 1.248
V
FB Input Bais Current
IFB
VFB =1.23V
-
-
1
uA
Output Voltage Line Regulation
2.5V< V
IN <6.0V
-
0.1
-
%
Switching Frequency
fOSC
-
1
-
MHz
Maximum Duty
DMAX
-
90
-
%
Soft-Start charging time
tSS
0.5
ms
Switching Current Limit
ILX
VIN=3.0V,duty cycle=80%
-
400
-
mA
LX ON Resistance
RLX
ILX =350mA
-
0.3
-
Ω
LX Leakage Current
ILeakage
VLX =29V, EN=0V
-
-
1
uA
EN Input Current
IEN
EN=5V
-
-
8
uA
VIH
0.1V hysteresis
2.0
-
-
V
EN Input Level
VIL
-
-
0.8
V
Thermal Shutdown
120
℃
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