AT1309 Datasheet, PDF (4/14 Pages) Aimtron Technology – Micro-Power Step up DC-DC Converter

AT1309
Preliminary Product Information
Micro-Power Step up DC-DC Converter
Electrical Characteristics
Parameter
Symbol
(V_IN=2.5V, Ta=+25Ċ, unless otherwise noted)
Test Condition
Min. Typ. Max. Units
Operating V _IN Range
V_IN
V_IN input Voltage
2.5 - 6.0 V
Under Voltage Thershold
UVLO V_IN falling, 100mV hysteresis 2.1 2.2 2.3 V
Switch- Off Input Current
I_IN1
No Switching
- 100 120 µA
Shutdown Current
I_IN3
EN=0V
-
-
1 µA
Feedback Reference
V_FB
1.212 1.230 1.248 V
FB Input Bias Current
I_FB
Output Voltage Line Regulation
V_FB =0.2V
2.5V< V_IN <6.0V
-
-
1 µA
- 0.1 - %
Switching Frequency
Maximum Duty
Soft-Start charging time
f_OSC
D_MAX
t_SS
- 1.4
- 90
- 0.5
- MHz
-%
- ms
Switching Current Limit
ILX
V_IN=3.0V,duty cycle=80%
- 1.0 - A
LX ON Resistance
LX Leakage Current
EN Input Current
EN Input Level
EN low Shutdown Delay
Thermal Shutdown
R_LX
I_Leakage
I_EN
V_IH
V_IL
ILX =350mA
V_LX =28V, EN=0V
EN=5V
0.1V hysteresis
- 0.3 - Ƹ
-
-
1 µA
-
-
8 µA
2.0 -
-
V
-
- 0.8 V
- 4 - ms
- 120 - Ċ
7F, No.9, PARK AVENUE II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: [phone] Fax: [phone]
WWW: http://www.aimtron.com.tw
3/2/2006 REV:1.1
Email: [e-mail]
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