
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
4.5 Vdc - 13.2 Vdc Input
Output Specifications (continued)
Parameter
Regulation Over Temperature
(-40
°
C to 85
°
C)
1.0 Vdc - 5.0 Vdc/6 A Output
Min
Typ
±
15 mV
±
10 mV
±
10 mV
±
8 mV
±
6 mV
±
5 mV
±
5 mV
Max
±
30 mV
±
20 mV
±
20 mV
±
15 mV
±
12 mV
±
10 mV
±
8 mV
Notes
V
O
=5.0 V
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
V
O
=1.0 V
-
Output Current
Current Limit Threshold
0 A
7 A
-
-
6 A
15 A
0.006 A
2
s
Latch Off
Short Circuit Surge Transient
-
0.003 A
2
s
Latch Off
Ripple and Noise (rms)
-
30 mV
50 mV
Ripple and Noise (pk-pk)
50 mV
100 mV
BW = 0-20 MHz; with 1 uF
ceramic capacitor & 10 uF
Aluminum capacitor at the
output.
Turn on Time
Overshoot at Turn on
Output Capacitance
Transient Response
-
-
-
30 mS
7%
2400 uF
3%
-
0 uF
Overshoot
-
150 mV
100 uS
150 mV
100 uS
200 mV
150 uS
200 mV
150 uS
50% ~ 100%
Max Load
Settling Time
-
Overshoot
-
100% ~ 50%
Max Load
Settling Time
V
O
=1.0 V
-5.0 V
-
di/dt = 0.5 A/uS; Vin = 8 V;
with a 220 uF Tantalum
capacitor at the output.
Note:
All specifications are typical at 8 V input, full load at 25
°
C
unless otherwise stated.
General Specifications
Parameter
Min
Efficiency
V
O
=5.0 V
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
V
O
=1.0 V
76%
Switching Frequency
340 kHz
Output Trim Range
90% V
O
Typ
94%
91%
89%
86%
84%
81%
79%
400 kHz
-
Max
-
-
-
-
-
-
-
460 kHz
110% V
O
Notes
91%
88%
86%
83%
81%
78%
Measured at Vin=8V, full load
Calculated Per Bell Core SR-332 (Vin=
8 V; Vo=3.3 V; I
O
= 4.8 A; T
a
= 25
°
C)
MTBF
6,922,389 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 0.7 x 0.32
19.81 x 17.78 x 8.13
0.7 x 0.308 x 0.65
17.78 x 7.82 x 16.51
5.5 g
-
-
Note
: All specifications are typical at 25
°
C
unless otherwise stated.