AT1313 Datasheet, PDF (3/12 Pages) Aimtron Technology – High Efficiency, Constant Current White-LED Driver

AT1313
High Efficiency, Constant Current
White-LED Driver
Recommended Operation Conditions
Parameter
Symbol
Power supply voltage
V_IN
Operating temperature
Top
Min.
Values
Typ.
Max.
Unit
2.5
Ä·
5.5
V
-30
+25
+85
Ċ
Electrical Characteristics
(V_IN=2.5V, Ta=+25Ċ, unless otherwise noted)
Parameter
Operating V _IN Range
Symbol
Test Condition
V_IN
V_IN input Voltage
Min. Typ. Max. Units
2.5 - 5.5 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 , FB>0.2V
- 100 120 uA
Shutdown Current
I_IN3
EN=0V
-
-
1 uA
Feedback Reference
V_FB
0.190 0.2 0.210 V
FB Input Bias Current
I_FB
V_FB =0.2V
-
-
1 uA
Over-voltage Threshold
V_OVP
V_OUT Rising
16 18 20 V
Over-voltage Hysteresis
2
V
OVP Leakage Current
I_OVP
EN=0V
-
-
1 uA
Output Voltage Line Regulation
2.5V< V_IN <6.0V
- 0.1 - %
Switching Frequency
Maximum Duty
Soft-Start charging time
Switching Current Limit
LX ON Resistance
LX Leakage Current
EN Input Current
EN Input Level
EN low Shutdown Delay
EN Low Cycle Time
EN High Cycle Time
f_OSC
D_MAX
t_SS
ILX
1.2 1.4
- 90
0.05 0.5
V_IN=3.0V,duty cycle=80% ,
- 1.2
R_LX
V_IN =2.5V, ILX =800mA
- 0.4
I_Leakage
I_EN
V_IH
V_IL
V_LX =16V, EN=0V
EN=5V
-
-
-
-
2.0 -
-
-
4
t_CYCL
Note(1)
0.05
t_CYCH Note(1)
0.05
Note(1): t_CYCL and t_CYCH are included rising time and falling time of PWM signal.
1.6 MHz
-%
ms
-A
-Ƹ
1 uA
1 uA
-V
0.5 V
ms
5 ms
5 ms
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
10/31/2006 REV:2.0
Email:[e-mail]
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