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參數資料
| 型號： | AT1314S-GRE |
| 廠商： | Aimtron Technology Corp. |
| 英文描述： | High-Efficiency Step-Down Current Regulator For LEDs |
| 中文描述： | 高效率降壓型LED的電流調節(jié)器 |
| 文件頁數： | 4/12頁 |
| 文件大小： | 320K |
| 代理商： | AT1314S-GRE |
AT1314
Preliminary Product Information
High-Efficiency Step-Down
Current Regulator For LEDs
Electrical Characteristics
7F, No.9, PARK AVENUE II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C.
Tel: 886-3-563-0878 Fax: 886-3-563-0879 WWW:
http://www.aimtron.com.tw
3/24/2006 REV:2.0 Email:
service@aimtron.com.tw
(IN=12V, EN=5V, Ta=+25
, unless otherwise noted)
Parameter
Symbol
Test Condition
Min.
Typ. Max. Units
Input operating voltage
IN
4.75
12
16
V
Input under-voltage lockout
threshold
UVLO hysteresis
V
UVLO
IN Rising
3.8
4.2
4.6
V
-
500
-
mV
Quiescent Current
Iin
V
FB
=0.5V
-
3.5
-
mA
Shutdown Current
I
SHDN
EN =GND
-
20
50
uA
Oscillator Frequency
F
SW
Ta=+25
-
600
-
KHz
Feedback Regulation voltage
V
FB
Ta=+25
-
0.4
-
V
FB Input Bias Current
I
FB
V
FB
=0.4V
-50
-
50
nA
Current limit
-
1
-
A
Maximum Duty Cycle
D
MAX
FB=0.3V
-
-
100
%
Minimum Duty Cycle
D
MIIN
FB=0.5V
0
-
-
%
SW Switch On-Resistance
R
SW-DS(ON)
I
SW
=1A
-
100
130
m
SW Leakage Current
I
SW
IN=13.5V,V
SW
=GND
, EN=0V
-
0.1
20
μ
A
Error Amplifier Voltage Gain
-
70
-
dB
Error Amplifier Trans-conductance
500
800
1000
μ
A/V
Soft-Start Time
-
0.8
-
ms
EN Pull Up Current
EN=0V
-
1
-
μ
A
V
IH
2.0
-
-
V
EN Trip Level
V
IL
-
-
0.5
V
Thermal Shutdown
-
160
-
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