參數(shù)資料
型號: APC18T12
英文描述: CHOKE,AXIAL,CONFORMAL,2.7uH, 10% INDUCTIVE TOL,355 IDC,
中文描述: 12Vin / 18A條非隔離點(diǎn)負(fù)載
文件頁數(shù): 6/10頁
文件大小: 2357K
代理商: APC18T12
Technical Reference Notes
APC18T12 Series
Typical Application Circuit
MODEL: APC18T12 SERIES
NOVEMBER 4, 2004 - REVISION 00
SHEET 6 OF 10
Figure 3. Typical Application Circuit
Enable Pin
The converter comes with an Enable pin primarily used to turn ON/OFF the converter. The converter is disabled (OFF) when
the voltage across the Enable pin and ground is between 0V to 0.8V. The converter is Enabled (ON) when the voltage across
the Enable pin and ground is between 2.6V to 15V (or the Enable Pin is left open).
Output Trim
Output voltage adjustment is accomplished by connecting an external resistor between the Trim Pin and Ground Pin terminals.
Resistance and Output voltage relationship is established by Equation 1. If Trim pin is left open – default V
O
= 0.75V
TRIM-UP EQUATION:
=
75
.
o
V
Where R
trim
is the resistance value in ohms and V
O
in Volts is the output voltage desired.
Table Rtrim values for different output voltage adjustment
Vo (V)
0.75
1.0
1.2
1.5
Rtrim ( ) from
Equation (1)
Rtrim ( ) from
E96
)
1000
(
10500
trim
R
(1)
1.8
9.00K
2.0
7.40K
2.5
5.00K
3.3
3.12K
5.0
1.47K
open
41.0K
22.3K
13.0K
open
41.2K
22.1K
13.0K
9.09K
7.32K
4.99K
3.09K
1.47K
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