NON-ISOLATED DC/DC CONVERTERS
12 V Input 0.9 V-5.0 V/20 A Output
Input Specifications (continued)
Parameter
Min
Typ
Max
Notes
Input Reflected Ripple Current (pk-pk)
Vo=5.0 V
Vo=3.3 V
Vo=2.5 V
Vo=0.9 V
280 mA
250 mA
200 mA
150 mA
350 mA
320 mA
280 mA
250 mA
-
-
-
Tested with simulated source
impedance of 1.5 uH 5Hz to 20 MHz,
and 2 × 270 uF/16 V Oscon
capacitors (ESR ≤ 20 mΩ) at the
input
Input Reflected Ripple Current (rms)
Vo=5.0 V
Vo=3.3 V
Vo=2.5 V
Vo=0.9 V
80 mA
70 mA
45 mA
40 mA
120 mA
100 mA
80 mA
60 mA
-
-
-
External Input Capacitance
Turn-on Voltage Threshold
Turn-off Voltage Threshold
-
540 uF
9.0 V
-
8.5 V
7.0 V
9.5 V
8.3 V
7.6 V
Note: All specifications are typical at 25 °C unless otherwise stated.
Output Specifications
Parameter
Min
Typ
Max
Notes
Output Voltage Set Point
-2.5%Vo,set
-
2.5%Vo,set Vin=12 V, lo=lomax, full load
Over all operating input voltage, resistive
load, and temperature conditions
Output Voltage Set Point
Load Regulation
-3.5%Vo,set
-
3.5%Vo,set
Vo=5.0 V
Vo=3.3 V
Vo=2.5 V
Vo=0.9 V
-
-
-
-
-
-
-
-
0.4%Vo,set
0.4%Vo,set Io=Iomin to Iomax
0.5%Vo,set
1%Vo,set
Line Regulation
-
-
0.5%Vo,set Vin=Vinmin to Vinmax
Output Ripple and Noise (pk-pk)
Vo=5.0 V
Tested at 0-20 MHz BW, with a
-
-
-
-
65 mV
60 mV
55 mV
45 mV
80 mV
75 mV
70 mV
55 mV
680 uF/6.3 V Oscon capacitor (ESR ≤ 12
mΩ), 10uF/16V Tantalum capacitor, and
10nF ceramic capacitor at the output.
Vo=3.3 V
Vo=2.5 V
Vo=0.9 V
Output Ripple and Noise (rms)
Vo=5.0 V
-
-
-
-
18 mV
15 mV
15 mV
10 mV
25 mV
25 mV
20 mV
15 mV
Vo=3.3 V
Vo=2.5 V
Vo=0.9 V
Output Current
0 A
-
20 A
40 A
0.1 A2s
10 mS
3%Vo
Current Limit Threshold
Short Circuit Surge Transient
Turn on Time
25 A
-
-
-
-
-
5 mS
0%Vo
Overshoot at Turn on
Output Capacitance
Vo=5.0 V
680 uF
680 uF
680 uF
-
-
-
5080 uF
7840 uF
11000 uF
Vo=2.5 V
Vo=0.9 V
Transient Response
-
-
-
-
Test conditions:
50% ~ 75% Max Load
100 mV
40 uS
150 mV
80 uS
di/dt=2.5 A/uS; Vin=12 V; with a 680 uF/6.3
V Oscon capacitor (ESR ≤ 12 mΩ),
10 uF/16 V Tantalum capacitor, and 10 nF
ceramic capacitor at the output.
Settling Time
75% ~ 50% Max Load
Settling Time
VO=0.9 V-
5.0 V
100 mV
40 uS
150 mV
80 uS
Note: All specifications are typical at nominal input, 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
