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參數(shù)資料
| 型號(hào)： | XRAH-01H1A0 |
| 廠商： | Bel Fuse Inc. |
| 英文描述： | NON-ISOLATED DC/DC CONVERTER 4.5 V-32 V Input 1.2 V-3.3 V/1 A Output |
| 中文描述： | 非隔離式DC / DC變換器4.5 V型32 V輸入1.2伏特，3.3伏特/ 1 A輸出 |
| 文件頁數(shù)： | 3/7頁 |
| 文件大?。?/td> | 175K |
| 代理商： | XRAH-01H1A0 |
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
Tel 201-432-0463
Fax 201-432-9542
www.belfuse.com
NON-ISOLATED DC/DC CONVERTER
4.5 V-32 V Input
1.2 V-3.3 V/1 A Output
General Specifications
Parameter
Efficiency
Min
83%
80%
76%
73%
70%
270 kHz
190 kHz
150 kHz
130 kHz
100 kHz
1.2 V
Typ
86%
83%
79%
76%
73%
290 kHz
220 kHz
170 kHz
150 kHz
120 kHz
-
Max
-
-
-
-
-
310 kHz
250 kHz
190 kHz
170 kHz
140 kHz
3.3 V
Notes
V
O
=3.3 V
V
O
=2.5 V
V
O
=1.8 V
V
O
=1.5 V
V
O
=1.2 V
Measured at Vin=20 V, full load.
Switching Frequency
V
O
=3.3 V
V
O
=2.5 V
V
O
=1.8 V
V
O
=1.5 V
V
O
=1.2 V
Output Trim Range
Vo=1.2 V when trim pin open.
Calculated Per Bell Core SR-332 (I
O
=0.8 A, Vin=20 V; T
a
= 25
°
C)
MTBF
8,040,762 hours
Dimensions (surface mount)
Inches (L
×
W
×
H)
Millimeters (L
×
W
×
H)
Dimensions (vertical)
Inches (L
×
W
×
H)
Millimeters (L
×
W
×
H)
Weight
0.78 x 0.70 x 0.32
19.81 x 17.78 x 8.13
0.70 x 0.308 x 0.65
17.78 x 7.82 x 16.51
5.1 g
-
-
Note:
All specifications are typical at 20V input, full load at 25
°
C
unless otherwise stated.
Control Specifications
Parameter
Min
Remote On/Off
Signal Low (Unit On)
-0.3 V
Signal High (Unit Off)
2.8 V
Output Trim Equations
Equations for calculating the trim resistor (in k
) given the desired adjusted voltage (Vadj) and the nominal
output voltage of the converter (Vo) are shown below. The Trim Down resistor should be connected between the
Trim pin and Vout. The Trim Up resistor should be connected between the Trim pin and Ground. Only one of the
resistors should be used for any given application.
7
adj
o
V
V
2
17
Typ
Max
Notes
-
-
1 V
12 V
Remote on/off pin open, unit on.
5
21
=
TrimDown
R
o
adj
TrimUp
R
V
V
=
Note:
Output voltage Vo=1.205 V
Module
Vout
Trim
GND
Rtrimdown
Module
Vout
Trim
GND
Rtrimup
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