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NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 14 Vdc Input
0.75 Vdc - 5.0 Vdc/3 A Output
Input Specifications (continued)
Parameter
Min
Typ
Max
Notes
Input Reflected Ripple Current (pk-pk)
Vo=5.0 V
-
150 mA
200 mA
I t Inrush Current Transient
0.01 A s
0.02 A s
Vo=3.3 V
Vo=0.75 V
Input Reflected Ripple Current (rms)
Vo=5.0 V
Vo=3.3 V
Vo=0.75 V
2
-
-
-
-
-
-
100 mA
35 mA
30 mA
20 mA
8 mA
2
150 mA
45 mA
40 mA
35 mA
15 mA
2
Tested with simulated source
impedance of 1uH, 5 Hz to 20 MHz and
two 100 uF/25 V external input
Tantalum capacitors.
Turn-on Voltage Threshold
Vo set=5 V
Vo set ≤ 3.3 V
-
-
5.5 V
4.3 V
6.5 V
4.5 V
Turn-off Voltage Threshold
Vo set=5 V
Vo set ≤ 3.3 V
3.8 V
3.8 V
5.5 V
4.0 V
6.0 V
4.3 V
Output Specifications
Parameter
Output Voltage Set Point
Min
-2%Vo,set
Typ
-
Max
2%Vo,set
Notes
Vin=12 V, lo=lomax
Over all operating input
Output Voltage Set Point
-3.5%Vo,set
-
2.5%Vo,set
voltage, resistive load, and
temperature conditions
0.1A s
0.2 A s
Load Regulation
Line Regulation
Regulation Over Temperature
(-40 ° C to +85 ° C)
Output Current
Current Limit Threshold
Short Circuit Surge Transient
0.4%Vo,set
0.4%Vo,set
-
0A
5A
-
0.2%Vo,set
0.3%Vo,set
0.5%Vo,set
-
-
2
0.4%Vo,set
0.4%Vo,set
-
3A
9.5 A
2
lo=lomin to lomax
Vin=Vinmin to Vinmax
Ripple and Noise (pk-pk)
Ripple and Noise (rms)
Vo=5.0 V
Vo=3.3 V
Vo=0.75 V
Vo=5.0 V
Vo=3.3 V
Vo=0.75 V
-
-
-
-
-
-
100 mV
80 mV
55 mV
30 mV
20 mV
15 mV
120 mV
100 mV
80 mV
40 mV
30 mV
20 mV
Test conditions:
0-20 MHz BW, with external
10 uF/10 V Tantalum capacitor
and 1uF/10V ceramic capacitor
at the output.
Ripple and Noise (pk-pk)
Vo=5.0 V
Vo=3.3 V
Vo=0.75 V
-
-
-
60 mV
40 mV
20 mV
80 mV
50 mV
30 mV
Test conditions:
0-20 MHz BW, with external
10 uF/10 V Tantalum capacitor
Ripple and Noise (rms)
Vo=5.0 V
Vo=3.3 V
-
-
15 mV
12 mV
25 mV
20 mV
1uF/10V ceramic capacitor and
two 22 uF/10 V ceramic
capacitors at the output.
Turn on Time
Overshoot at Turn on
Output Capacitance
Vo=0.75 V
-
-
-
0 uF
5 mV
8 mS
0%
-
10 mV
12 mS
3%
1200 uF
Transient Response
50% ~ 100% Max Load
Settling Time
100% ~ 50% Max Load
Settling Time
All
-
-
-
-
150 mV
25 uS
150 mV
25 uS
200 mV
40 uS
200 mV
40 uS
Test conditions: di/dt = 2.5 A/uS,
Vin=12 V, and with external
10 uF/10 V Tantalum capacitor and
1uF/10 V ceramic capacitor at the
output.
Note : All specifications are typical at nominal input (Vin=12 V), full load at 25 ° C unless otherwise stated.
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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