參數(shù)資料
型號: AT1799S-GRE
廠商: Aimtron Technology Corp.
英文描述: 2A Step-Down Voltage Regulator
中文描述: 第2A降壓穩(wěn)壓器
文件頁數(shù): 4/14頁
文件大?。?/td> 356K
代理商: AT1799S-GRE
AT1799
2A Step-Down Voltage Regulator
Electrical Characteristics
2F, No.10, Prosperity RD. 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
8/23/2006 REV:1.1 Email:
service@aimtron.com.tw
4
(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
=1.5V
-
3.5
-
mA
Shutdown Current
I
SHDN
EN =GND
-
20
50
uA
Oscillator Frequency
f
SW
Ta=+25
-
380
440
KHz
Short-Circuit Frequency
FB=0V
-
42
-
KHz
Feedback Regulation voltage
V
FB
Ta=+25
1.20
1.215 1.233
V
FB Input Bias Current
I
FB
V
FB
=1.215V
-50
-
50
nA
Current limit
2.5
2.75
-
A
Maximum Duty Cycle
D
MAIN
FB=1.0V
-
-
100
%
Minimum Duty Cycle
D
MIIN
FB=1.5V
0
-
-
%
SW Switch On-Resistance
R
SW-DS(ON)
I
SW
=2A
-
100
130
m
SW Leakage Current
I
SW
IN=13.5V,V
SW
=GND
, EN=0V
0 A<I
SW
< 2A
-
0.1
20
μ
A
Load Regulation
0.2
%
Line Regulation
4.75V < IN<16V
-
1.0
-
%/V
Error Amplifier Voltage Gain
-
70
-
dB
Error Amplifier Trans-conductance
500
800
1000
μ
A/V
Soft-Start Time
-
10
-
ms
EN Threshold Voltage
Hysteresis 150mV
-
1
-
V
EN Pull Up Current
EN=0V
-
1
-
μ
A
Thermal Shutdown
-
160
-
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