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
2.4 Vdc - 5.5 Vdc Input
0.75 Vdc - 3.63 Vdc/16 A Output
General Specifications
Parameter
Efficiency
Min
91%
86%
75%
250 kHz
-
0.7525 V
-
Typ
94%
89%
78%
300 kHz
125
°
C
-
-
Max
-
-
-
350 kHz
-
3.63 V
5%
Notes
Vo=3.3 V
Vo=1.8 V
Vo=0.75 V
Measured at Vin=5 V, full load
Switching Frequency
Over Temperature Shutdown
Output Trim Range (Wide Trim)
Remote Sense Compensation
Calculated Per Bell Core SR-332 (I
O
=
Nominal; T
a
= 25
°
C)
MTBF
5,109,613 hours
Dimensions
Inches (L
×
W
×
H)
Millimeters (L
×
W
×
H)
2.0 x 0.5 x 0.363
50.80 x 12.7 x 9.23
8.3 g
Weight
-
-
Note
: All specifications are typical at 25
°
C
unless otherwise stated.
Control Specifications
Parameter
Signal Low (Unit Off)
Signal High (Unit On)
Signal Low (Unit On)
Signal High (Unit Off)
Min
-0.3 V
1.5 V
-0.3 V
1.5 V
Typ
-
-
-
-
Max
0.3 V
5.8 V
0.3 V
5.8 V
Notes
VRBC-16F2A0; Remote On/Off pin
open, Unit on.
VRBC-16F2AL; Remote On/Off pin
open, Unit on.
Sequencing Voltage should be higher
than output voltage.
Delay from Vinmin to application of
voltage on SEQ pin
Sequencing Voltage
0.05 V
-
Vin
Sequencing Slew Rate Capability
-
-
2 V/mS
Sequencing Delay Time
10 mS
-
-
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.
07
.
21
adj
V
11
.
7525
.
=
trim
R
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.
(
1698
.
7
×
=
adj
trim
V
V
)
7525
.
Rtrim
Module
Vout
GND
Trim
Vtrim
Module
Vout
GND
Trim