NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /20 A Output
December 2, 2010
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Min
-1.5
-3.0
0.6
-
-
-
-
-
-
Typ
-
-
-
-
-
-
-
-
-
20
10
-
200
30
-
-
-
2
Max
+1.5
+3.0
3.63
0.5
0.4
0.4
10
10
0.4
35
15
20
-
-
200
1000
10000
-
Unit
%Vo,set
%Vo,set
V
V
%Vo,set
%Vo,set
mV
mV
%Vo,set
mV
mV
A
%Io,max
%Io,max
uF
uF
uF
mS
Hiccup Mode
Vo≤250mV, Hiccup Mode
Without the Tunable Loop
TM
With the Tunable Loop
TM
With the Tunable Loop
TM
Case 1: On/Off input is enabled and then input
power is applied (delay from instant at which
V
IN
= V
IN, min
until Vo =10% of Vo, set)
Case 2: Input power is applied for at least one
second and then the On/Off input is enabled
(delay from instant at which Von/Off is enabled
until Vo =10% of Vo, set)
time for Vo to rise from 10% of Vo, set to 90%
of Vo, set
V
in
=V
in, min
to V
in, max
, I
o
=I
o, max
, With or without
maximum external capacitance
mV
uS
mV
uS
di/dt=10A/us, Vin=3.3V, Vo=1.5V,
Ta=25°C, Co=0
Line Regulation, V
IN
=V
IN, min
to V
IN, max
Load Regulation, I
O
=I
O, min
to I
O, max
Line Regulation, V
IN
=V
IN, min
to V
IN, max
Load Regulation, I
O
=I
O, min
to I
O, max
Temperature Regulation, T
ref
=T
A, min
to T
A, max
5Hz to 20MHz BW, V
IN
=V
IN, nom
and I
O
=I
O, min
to
I
O, max
, Co = 0.1μF // 10
μF
ceramic capacitors
Notes
with 0.5% tolerance for external resistor used to
set output voltage
Over all operating input voltage, resistive load,
and temperature conditions until end of life
selected by an external resistor
Output Specifications
Parameter
Output Voltage Set Point
Output Voltage
Adjustment Range
Remote Sense Range
Output Regulation
(for V
O
≥
2.5Vdc)
Output Regulation
(for V
O
< 2.5Vdc)
Ripple and Noise (pk-pk)
Ripple and Noise (rms)
Output Current Range
Output DC Current Limit
Output Short-Circuit Current
Output Capacitance
ESR≥ 1 mΩ
ESR≥0.15 mΩ
ESR≥ 10 mΩ
-
-
0
-
-
0
0
0
-
Turn-On Delay Time
-
2
-
mS
Output voltage Rise time
Output voltage overshoot
Dynamic Load Response
△
V0%~50% of
-
-
5
-
-
3
mS
%Vo
Peak Deviation
Settling Time
Peak Deviation
Settling Time
-
-
-
-
330
30
420
30
-
-
-
-
Max Load
△
V50%~0% of
Max Load
Note:
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and
temperature conditions.
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
•
Tel 201-432-0463
•
Fax 201-432-9542
•
www.belfuse.com
3
BEL [ BEL FUSE INC. ]
