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NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input
General Specifications
0.75 Vdc - 3.63 Vdc/6 A Output
Parameter
Min
Typ
Max
Notes
Efficiency
Vo=3.3 V
Vo=2.5 V
-
-
93%
91%
-
-
Vo=1.8 V
Vo=1.5 V
Vo=1.2 V
Vo=0.75 V
Switching Frequency
Over Temperature Shutdown
Output Voltage Trim Range
MTBF
-
-
-
-
250 kHz
-
0.7525 V
88%
87%
84%
78%
300 kHz
135 ° C
-
7,142,646 hours
-
-
-
-
350 kHz
-
3.63 V
Measured at Vin=5 V, full load
Calculated Per Bell Core SR-332 (Vin=5 V;
Vo=0.75 V; I O = 4.8 A; T a = 25 ° C)
Dimensions
Inches (L × W × H)
Millimeters (L × W × H)
1.0 x 0.5 x 0.243
25.4 x 12.7 x 6.16
Weight
-
5g
-
Note : All specifications are typical at 25 ° C unless otherwise stated.
Control Specifications
Parameter
Min
Typ
Max
Notes
Remote On/Off
Signal Low (Unit Off)
Signal High (Unit On)
Signal Low (Unit On)
Signal High (Unit Off)
Sequencing Voltage
Sequencing Slew Rate Capability
Sequencing Delay Time
-0.2 V
-
-0.2 V
1.5 V
0V
-
10 mS
-
-
-
-
-
-
-
0.3 V
Vin, max
0.3 V
Vin, max
Vin
2 V/mS
-
VRBA-06F2A0; Remote On/Off pin open, Unit
on.
VRBA-06F2AL; Remote On/Off pin open, Unit
on.
Sequencing Voltage applied on SEQ pin
should be higher than output voltage.
Delay from Vin, min to application of voltage
on SEQ pin
Tracking Accuracy
Power-Up
Power-Down
-
-
100 mV
200 mV
200 mV
400 mV
Output Trim Equations
Equation for calculating the trim resistor (in k ? ) given the desired adjusted voltage (Vadj) is shown below. The
Trim Up resistor should be connected between the Trim pin and Ground.
Vout
R trim =
21 . 07
V adj ? 0 . 7525
? 5 . 11
Module Trim
GND
Rtrim
Equation for calculating the trim voltage (in V) given the desired adjusted voltage (Vadj) is shown below. The
Trim Up voltage should be connected between the Trim pin and Ground.
Vout
V trim = 0 . 7 ? 0 . 1698 × ( V adj ? 0 . 7525 )
Module
Trim
Vtrim
GND
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 ? Tel 201-432-0463 ? Fax 201-432-9542 ? www.belfuse.com
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