參數(shù)資料
型號(hào): VRAH-07C1A0G
廠商: BEL FUSE INC
元件分類: 電源模塊
英文描述: 1-OUTPUT 17.5 W DC-DC REG PWR SUPPLY MODULE
封裝: ROHS COMPLIANT PACKAGE-5
文件頁(yè)數(shù): 3/7頁(yè)
文件大?。?/td> 145K
代理商: VRAH-07C1A0G
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 CONVERTERS
3.3 Vdc Input
0.9 Vdc - 2.5 Vdc/7 A Output
General Specifications
Parameter
Min
Typ
Max
Notes
Efficiency
VO=2.5 V
VO=1.8 V
VO=1.5 V
VO=1.2 V
VO=1.0 V
VO=0.9 V
90%
86%
84%
81%
79%
78%
92%
88%
86%
83%
81%
80%
-
Measured at Vin=3.3 V, full load and
Ta=25
°C
Switching Frequency
250 kHz
300 kHz
340 kHz
Output Trim Range
50%
-
146%
VO=1.8 V
MTBF
3,391,747 hours
Calculated Per Bell Core SR-332
(Vin=3.3 V; Vo=1.8 V; IO = 5.6 A; Ta =
25
°C)
Dimensions (surface mount)
Inches (L × W × H)
Millimeters (L × W × H)
0.78 x 0.70 x 0.32
19.81 x 17.78 x 8.13
Dimensions (vertical)
Inches (L × W × H)
Millimeters (L × W × H)
0.70 x 0.308 x 0.65
17.78 x 7.82 x 16.51
Weight
-
5 g
-
Control Specifications
Parameter
Min
Typ
Max
Notes
Remote On/Off
Signal Low (Unit Off)
-0.3 V
-
1 V
Signal High (Unit On)
1.8 V
-
3.6 V
Remote on/off pin open, unit on.
Output Trim Equations
Equations for calculating the trim resistor given the desired adjusted voltage (Vadj) and the nominal output
voltage of the converter (Vnom) are shown below. The Trimup resistor should be connected between the Trim pin
and Ground and the Trimdown resistor should be connected between the Trim pin and Vout pin.
Note: Output voltage Vo=1.8 V when Rtrim is open.
Module
Vout
Trim
GND
Rtrimup
K ohm
Vo
adj
Vo
up
Rtrim
)
261
.
0
,
064
.
3
(
_
=
Module
Vout
Trim
GND
Rtrimdown
Kohm
adj
Vo
R
down
trim
)
091
.
4
,
8488
.
3
(
_
=
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