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Электронный компонент: XRAH-12FXX0

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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
3.0 V-5.5 V Input
1.0 V-3.3 V/12 A Output

Non-Isolated
OCP/SCP
Fixed frequency (300 kHz)
Trim
function
(Option)
Low profile package (7.82 mm)
Remote
On/Off
Under-voltage lockout (UVLO)
Remote Sense (SMD module)
Description
The Bel xRAH-12Fxx0 series are part of the low cost non-isolated dc/dc converter series. These converters are
available in a range of output voltages from 1.0 V to 3.3 V. It is packaged in a compact, overmolded package
rated at 12 A. The output is closely regulated and the efficiency of 3.3 V output module is typically 93% at full
load. Typical features include remote on/off, input under voltage lockout, over current protection and short circuit
protection.
Part Selection
Output
Voltage
Input
Voltage
Max. Output
Current
Max. Output
Power
Typical
Efficiency
Part Number
Surface Mount
Part Number
Vertical Mount
3.3 V
4.5 V - 5.5 V
12 A
39.6 W
93%
SRAH-12F330
VRAH-12F330
2.5 V
3.6 V - 5.5 V
12 A
30.0 W
89%
SRAH-12F250 VRAH-12F250
1.8 V
3.0 V - 5.5 V
12 A
21.6 W
87%
SRAH-12F180 VRAH-12F180
1.5 V
3.0 V - 5.5 V
12 A
18.0 W
84%
SRAH-12F150 VRAH-12F150
1.2 V
3.0 V - 5.5 V
12 A
14.4 W
82%
SRAH-12F120 VRAH-12F120
1.0 V
3.0 V - 5.5 V
12 A
12.0 W
80%
SRAH-12F100 VRAH-12F100
Note:
Add "0" suffix at the end of the model number to indicate "Tube Packaging", and "R" for "Reel
Packaging", and "G" for "Tray Packaging".
Absolute Maximum Ratings
Parameter
Min
Typ
Max
Notes
Input Voltage (continuous)
-0.3 V
-
6 V
Output Enable Terminal Voltage
-0.3 V
-
7 V
Ambient Temperature
-40
C
-
85
C
Storage Temperature
-55
C
-
125
C
Input Specifications
Parameter
Min
Typ
Max
Notes
Input Voltage
V
O
=3.3 V
V
O
=2.5 V
V
O
=1.8-1.0 V
4.5 V
3.6 V
3.0 V
-
-
-
5.5 V
5.5 V
5.5 V
Input Current (no load)
-
120 mA
200 mA
Input Current (full load)
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
-
-
-
-
-
-
-
-
-
-
-
-
11 A
10.5 A
9.0 A
8.1 A
6.5 A
5.2 A
Remote Off Input Current
-
2 mA
5 mA
xRAH-12Fxx0 Series RoHS Compliant
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
3.0 V-5.5 V Input
1.0 V-3.3 V/12 A Output
Input Specifications (continued)
Parameter
Min
Typ
Max
Notes
Input Reflected Ripple Current (pk-pk)
-
260 mA
320 mA
Input Reflected Ripple Current (rms)
-
75 mA
120 mA
With simulated source impedance of
500 nH, 5 Hz to 20 MHz; use a
270 uF/6.3 V cap with ESR=0.03 ohm
max at 100 kHz
I
2
t Inrush Current Transient
-
0.09 A
2
s
0.2 A
2
s
Turn on Voltage Threshold
2.1 V
-
Turn off Voltage Threshold
-
2 V
2.4 V
Note:
All specifications are typical at 25
C
unless otherwise stated.
Output Specifications
Parameter
Min
Typ
Max
Notes
Output Voltage Set Point
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
3.234 V
2.450 V
1.764 V
1.470 V
1.176 V
0.980 V
3.3 V
2.5 V
1.8 V
1.5 V
1.2 V
1.0 V
3.366 V
2.550 V
1.836 V
1.530 V
1.224 V
1.020 V
Test conditions:
Vin=5 V, Io= 50% load
Line Regulation
-
1 mV
4 mV
Load Regulation
-
2 mV
5 mV
Regulation Over Temperature
(-40
C to +85 C) 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
-
-
-
-
-
-
10 mV
9 mV
7 mV
6 mV
5 mV
4 mV
15 mV
13 mV
12 mV
11 mV
10 mV
9 mV
Output Current
0 A
-
12 A
Current Limit Threshold
20 A
-
30 A
Short Circuit Surge Transient
-
0.3 A
2
s 0.6
A
2
s
Ripple and Noise (rms)
-
12 mV
21 mV
Ripple and Noise (pk-pk)
-
50 mV
90 mV
Test conditions:
0-20 MHz BW; 1 uF ceramic
capacitor and 330 uF external
capacitor at the output.
Turn on Time
-
5 mS
10 mS
Overshoot at Turn on
-
0%
3%
Output Capacitance
330 uF
-
4800 uF
Transient Response
Overshoot
-
110 mV
150 mV
50% ~ 100%
Max Load
Settling Time
-
40 uS
80 uS
Overshoot
-
110 mV
150 mV
100% ~ 50%
Max Load
Settling Time
V
O
=3.3 V
-
40 uS
80 uS
Overshoot
-
100 mV
150 mV
50% ~ 100%
Max Load
Settling Time
-
30 uS
60 uS
Overshoot
-
100 mV
150 mV
100% ~ 50%
Max Load
Settling Time
V
O
=2.5 V
-
30 uS
60 uS
Overshoot -
90
mV
130 mV
50% ~ 100%
Max Load
Settling Time
-
20 uS
40 uS
Overshoot -
90
mV
130 mV
100% ~ 50%
Max Load
Settling Time
V
O
=1.0 V -
1.8 V
- 20
uS
40 uS
Test conditions:
di/dt=0.5A/us, Vin=5V, with
330uF external load
capacitance.
Note:
All specifications are typical at 5 V 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
NON-ISOLATED DC/DC CONVERTERS
3.0 V-5.5 V Input
1.0 V-3.3 V/12 A Output
General Specifications
Parameter
Min
Typ
Max
Notes
Efficiency
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
90%
86%
84%
81%
79%
77%
93%
89%
87%
84%
82%
80%
-
-
-
-
-
-
Vin=5 V, full load
Efficiency
V
O
=1.8 V
V
O
=1.5 V
V
O
=1.2 V
V
O
=1.0 V
85%
81%
79%
76%
88%
84%
82%
79%
-
-
-
-
Vin=3.3 V, full load
Switching Frequency
250 kHz
300 kHz
350 kHz
Output Trim Range
90%V
O
- 110%V
O
Remote Sense Compensation
-
-
10%
SMD module
MTBF
4,038,174 hours
Calculated Per Bell Core SR-332 (I
O
= 9.6 A, Vin=5 V; T
a
= 25
C)
Dimensions (surface mount)
Inches (L W H)
Millimeters (L W H)
0.78 x 0.70 x 0.32
19.81 x 17.78 x 8.128
Dimensions (vertical)
Inches (L W H)
Millimeters (L W H)
0.70 x 0.308 x 0.65
17.78 x 7.82 x 16.51
Weight -
5.1
g
-


Control Specifications
Parameter
Min
Typ
Max
Notes
Remote On/Off
-
-
0.9 V (Vin=3.0 V)
-
-
1.35 V (Vin=4.5 V)
Signal Low (Unit Off)
-
-
1.65 V (Vin=5.5 V)
2.1 V (Vin=3.0 V)
-
-
3.15 V (Vin=4.5 V)
-
-
Signal High (Unit On)
3.85 V (Vin=5.5 V)
-
-
Remote on/off pin open, unit on.








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
3.0 V-5.5 V Input
1.0 V-3.3 V/12 A Output

Output Trim Equations
Equations for calculating the trim resistor (in k) given the desired adjusted voltage (Vadj) and the nominal
output voltage of the converter (Vnom) are shown below. The Trim Down resistor should be connected between
the Trim pin and Vout. The Trim Up resistor should be connected between the Trim pin and Ground. Only one of
the resistors should be used for any given application.

B
V
V
A
R
adj
nom
TrimDown
-
-
=


D
V
V
C
R
nom
adj
TrimUp
-
-
=


Vnom
A B C D
3.3 161.391
161.900
43.330
100.000
2.5 111.674
208.900
43.330
147.000
1.8 68.576
287.900
43.330
226.000
1.5 50.000
287.900
43.330
226.000
1.2 31.240
208.900
43.330
147.000
1.0 18.850
161.900
43.330
100.000










Module
Vout
Trim
GND
Rtrimdown
Module
Vout
Trim
GND
Rtrimup
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
3.0 V-5.5 V Input
1.0 V-3.3 V/12 A Output

Efficiency Data
Efficiency Curve
78.00%
80.00%
82.00%
84.00%
86.00%
88.00%
90.00%
92.00%
94.00%
96.00%
98.00%
1
2
3
4
5
6
7
8
9 10 11 12
Output Current (A)
E
f
f
i
ci
en
c
y
4.5 V
5.0 V
5.5 V
Efficiency Curve
74.00%
76.00%
78.00%
80.00%
82.00%
84.00%
86.00%
88.00%
90.00%
92.00%
94.00%
1
2
3
4
5
6
7
8
9
10 11 12
Output Current (A)
E
f
f
ic
ie
n
c
y
3.6 V
4.5 V
5.5 V
xRAH-12F330 xRAH-12F250
Efficiency Curve
70.00%
72.00%
74.00%
76.00%
78.00%
80.00%
82.00%
84.00%
86.00%
88.00%
90.00%
92.00%
94.00%
1
2
3
4
5
6
7
8
9 10 11 12
Output Current (A)
E
f
f
i
ci
en
cy
3.0 V
3.3 V
5.0 V
5.5 V
Efficiency Curve
70.00%
72.00%
74.00%
76.00%
78.00%
80.00%
82.00%
84.00%
86.00%
88.00%
90.00%
92.00%
1
2
3
4
5
6
7
8
9
10 11 12
Output Current (A)
E
f
f
i
ci
en
cy
3.0 V
3.3 V
5.0 V
5.5 V
xRAH-12F180 xRAH-12F150
Efficiency Curve
70.00%
72.00%
74.00%
76.00%
78.00%
80.00%
82.00%
84.00%
86.00%
88.00%
90.00%
92.00%
1
2
3
4
5
6
7
8
9
10 11 12
Output Current (A)
E
f
f
i
ci
en
cy
3.0 V
3.3 V
5.0 V
5.5 V
Efficiency Curve
68.00%
70.00%
72.00%
74.00%
76.00%
78.00%
80.00%
82.00%
84.00%
86.00%
88.00%
90.00%
1
2
3
4
5
6
7
8
9
10 11 12
Output Current (A)
E
f
fi
c
i
en
cy
3.0 V
3.3 V
5.0 V
5.5 V
xRAH-12F120 xRAH-12F100