NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /3 A Outputs
December 9, 2010
Bel Power, Inc. , a subsidiary of Bel Fuse, Inc.
Output Specifications
Parameter
Min
Typ
Max
Unit
Notes
with 0.5% tolerance for external resistor
used to set output voltage
Output Voltage Set Point
Output Voltage
-1.5
-
+1.5
%Vo,set
Over all operating input voltage, resistive
%Vo,set load, and temperature conditions until end
of life
-3.0
-
+3.0
Adjustment Range1
0.6
-
-
-
3.63
0.5
V
V
selected by an external resistor
Remote Sense Range
Load Regulation
VO ≥2.5V
-
-
-
-
10
5
mV
mV
IO=IO, min to IO, max
VO < 2.5V
Line Regulation
VO ≥2.5V
-
-
-
-
0.4
10
%Vo,set VIN=VIN, min to VIN, max
mV
VO < 2.5V
Temperature Regulation
(-40°C to +85°C)
-
-
0.4
%Vo,set
5Hz to 20MHz BW, VIN=VIN, nom and IO=IO,
min to IO, max Co = 0.1μF // 10 μF ceramic
capacitors)
Ripple and Noise (pk-pk)
Ripple and Noise (rms)
Output Current Range
-
-
20
15
-
35
25
3
mV
mV
A
0
-
Output DC Current Limit
Output Short-Circuit Current
-
200
-
%Io,max Hiccup Mode
-
0.12
A
Vo≤250mV, Hiccup Mode
Output Capacitance1
ESR≥ 1 mΩ
0
0
0
-
-
-
47
1000
3000
uF
uF
uF
Without the Tunable LoopTM
With the Tunable LoopTM
With the Tunable LoopTM
ESR≥0.15 mΩ
ESR≥10 mΩ
Case 1: On/Off input is enabled and then
input power is applied (delay from instant
at which VIN = VIN, min until Vo =10% of
Vo, set)
-
2
-
-
mS
Turn-On Delay Time
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)
-
2
mS
mS
time for Vo to rise from10% of Vo, set to
90% of Vo, set
Output voltage Rise time
-
-
5
-
-
Vin=Vin, min to Vin, max, Io=Io, min to Io,
%Vo,set max, With or without maximum external
capacitance
Output voltage overshoot
3
Dynamic Load Response
Peak Deviation
-
-
-
-
90
20
-
-
-
-
mV
△V0%~50% of
Max Load
Settling Time
Peak Deviation
Settling Time
uS
mV
uS
di/dt=10A/us, Vin=5V, Vo=1.5V, Ta=25°C,
Co=0
100
20
△V50%~0% of
Max Load
Notes: 1. External capacitors may require using the new Tunable LoopTM feature to ensure that the module is
stable as well as getting the best transient response (See the Tunable LoopTM section for details).
2. 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. ]
