AT1309
Preliminary Product Information
Micro-Power Step up DC-DC Converter
Electrical Characteristics
(VIN=2.5V, Ta=+25℃, unless otherwise noted)
Parameter
Symbol
Test Condition
VIN input Voltage
Min. Typ. Max. Units
Operating V IN Range
VIN
2.5
-
6.0
2.3
V
Under Voltage Thershold
Switch- Off Input Current
Shutdown Current
UVLO VIN falling, 100mV hysteresis 2.1
2.2
V
µA
µA
V
IIN1
IIN3
VFB
IFB
No Switching
EN=0V
-
-
100 120
-
1
Feedback Reference
1.212 1.230 1.248
FB Input Bias Current
VFB =0.2V
-
-
1
µA
%
2.5V< VIN <6.0V
Output Voltage Line Regulation
Switching Frequency
Maximum Duty
-
-
-
0.1
1.4
90
-
-
-
-
fOSC
DMAX
tSS
MHz
%
Soft-Start charging time
-
0.5
ms
Switching Current Limit
I
VIN=3.0V,duty cycle=80%
-
1.0
-
A
LX
I
=350mA
Ω
LX ON Resistance
LX Leakage Current
EN Input Current
RLX
ILeakage
IEN
-
-
0.3
-
1
LX
VLX =28V, EN=0V
-
µA
µA
V
EN=5V
-
-
-
8
0.1V hysteresis
VIH
2.0
-
-
EN Input Level
VIL
-
0.8
-
V
EN low Shutdown Delay
Thermal Shutdown
-
4
ms
℃
-
120
-
7F, No.9, PARK AVENUE II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878
3/2/2006 REV:1.1
Fax: 886-3-563-0879
WWW: http://www.aimtron.com.tw
Email: service@aimtron.com.tw
4
AIMTRON [ AIMTRON TECHNOLOGY ]
