NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 13.2 Vdc Input
0.9 Vdc - 5.0 Vdc/3 A Output
•
•
•
•
Non-Isolated
Trim Function
Low Profile Package (7.82 mm)
UL60950-1 Recognized (UL/cUL)
•
•
•
Remote On/Off
OCP/SCP
Under-Voltage Lockout (UVLO)
Description
The Bel xRAH-03Exx0 is part of the low cost non-isolated dc/dc converter Power Module series. The modules use
a SMD or SIP package for ease of layout and space savings. The output is closely regulated and the efficiency of
3.3 Vdc output module is typically 93% at full load.
Part Selection
Output
Voltage
5.0 Vdc
3.3 Vdc
2.5 Vdc
1.8 Vdc
1.5 Vdc
1.2 Vdc
1.0 Vdc
0.9 Vdc
Input Voltage
8.0 Vdc - 13.2 Vdc
4.5 Vdc - 13.2 Vdc
4.5 Vdc - 13.2 Vdc
4.5 Vdc - 13.2 Vdc
4.5 Vdc - 13.2 Vdc
4.5 Vdc - 13.2 Vdc
4.5 Vdc - 13.2 Vdc
4.5 Vdc - 13.2 Vdc
Max. Output
Current
3A
3A
3A
3A
3A
3A
3A
3A
Notes:
1. Add “0” suffix at the end of the model number to indicate “Tube Packaging”, and “R” for “Reel
Packaging”, and “G” for “Tray Packaging”.
2. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers.
Parameter
Input Voltage (continuous)
Output Enable Terminal Voltage
Ambient Temperature
Storage Temperature
NO
TF
OR
Absolute Maximum Ratings
Min
-0.3 V
-0.3 V
0
°C
-40
°C
NE
W
Typ
-
-
-
-
Typ
-
-
-
-
-
-
30 mA
-
4 mA
75 mA
30 mA
2
Max. Output
Power
15 W
9.9 W
7.5 W
5.4 W
4.5 W
3.6 W
3W
2.7 W
DE
Typical
Efficiency
95%
93%
91%
88%
87%
85%
84%
82%
Max
14 V
13.2 V
70
°C
100
°C
Max
13.2 V
-
3A
-
150 mA
60 mA
0.08 A s
4.5 V
4.0 V
2
Input Specifications
Parameter
Input Voltage
Min
4.5 V
Input Current (no load)
Input Current (full load)
Remote Off Input Current
Input Reflected Ripple Current
(pk-pk)
Input Reflected Ripple Current
(rms)
2
I t Inrush Current Transient
Turn-on Voltage Threshold
Turn-off Voltage Threshold
-
-
-
0.02 A s
4.1 V
3.3 V
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
•
Tel 201-432-0463
•
Fax 201-432-9542
•
www.belfuse.com
SIG
NS
Part Number
Surface Mount
SRAH-03E500
SRAH-03E330
SRAH-03E250
SRAH-03E180
SRAH-03E150
SRAH-03E120
SRAH-03E100
SRAH-03E090
xRAH-03Exx0 Series
RoHS Compliant
Rev.A
Part Number
Vertical Mount
VRAH-03E500
VRAH-03E330
VRAH-03E250
VRAH-03E180
VRAH-03E150
VRAH-03E120
VRAH-03E100
VRAH-03E090
Notes
Notes
Min. input voltage for 5.0 V output module
should be 8.0 V
With simulated source impedance of
500 nH, 5 Hz to 20 MHz; Use two
270 uF/16 V Oscon capacitors with ESR =
0.018 ohm max. at 100 kHz at 25
°C
Not applicable for 5.0 V output.
NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 13.2 Vdc Input
0.9 Vdc - 5.0 Vdc/3 A Output
Parameter
Output Voltage Set Point
V
O
=5.0 V
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
V
O
=0.9 V
Line Regulation
V
O
=5.0 V
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
V
O
=0.9 V
Load Regulation
V
O
=5.0 V
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
V
O
=0.9 V
Regulation Over Temperature
(0
°C
to 70
°C)
Output Current
Current Limit Threshold
Short Circuit Surge Transient
Ripple and Noise (rms)
Turn on Time
Ripple and Noise (pk-pk)
Overshoot at Turn on
Output Capacitance
50% ~ 100%
Max Load
Min
4.900 V
3.234 V
2.450 V
1.764 V
1.470 V
1.176 V
0.980 V
0.882 V
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Typ
5.0 V
3.3 V
2.5 V
1.8 V
1.5 V
1.2 V
1.0 V
0.9 V
NE
W
-
0A
-
-
3.3 A
-
-
-
-
-
0%
-
0 uF
-
-
-
-
-
-
-
-
-
-
-
-
DE
15 mV
10 mV
8 mV
8 mV
5 mV
5 mV
5 mV
5 mV
20 mV
0.02 A s
15 mV
50 mV
2
10 mV
8 mV
6 mV
6 mV
5 mV
5 mV
5 mV
5 mV
NO
TF
OR
Transient Response
100% ~ 50%
Max Load
50% ~ 100%
Max Load
100% ~ 50%
Max Load
50% ~ 100%
Max Load
100% ~ 50%
Max Load
Overshoot
Settling Time
Overshoot
Settling Time
Overshoot
Settling Time
Overshoot
Settling Time
Overshoot
Settling Time
Overshoot
Settling Time
V
O
=5 V
V
O
=3.3 V
V
O
=2.5 V
150 mV
60 uS
150 mV
60 uS
110 mV
60 uS
110 mV
60 uS
110 mV
60 uS
110 mV
60 uS
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
•
Tel 201-432-0463
•
Fax 201-432-9542
•
www.belfuse.com
SIG
NS
Max
5.100 V
3.366 V
2.550 V
1.836 V
1.530 V
1.224 V
1.020 V
0.918 V
15 mV
10 mV
10 mV
10 mV
8 mV
8 mV
8 mV
8 mV
25 mV
20 mV
15 mV
15 mV
10 mV
10 mV
10 mV
10 mV
40 mV
3A
8 A
0.08 A s
40 mV
100 mV
60mS
3%
1200 uF
200 mV
120 uS
200 mV
120 uS
150 mV
120 uS
150 mV
120 uS
150 mV
100 uS
150 mV
100 uS
2
Output Specifications
Notes
Test condition:
Vin=8 V, lout=full load
BW = 0-20 MHz.
BW = 0-20 MHz.
di/dt = 0.5 A/uS;
Vin = 8 V;
Ta = 25
°C
and with a
220 uF Tan. capacitor on
output
NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 13.2 Vdc Input
0.9 Vdc - 5.0 Vdc/3 A Output
Parameter
Transient Response
50% ~ 100%
Max Load
100% ~ 50%
Max Load
50% ~ 100%
Max Load
100% ~ 50%
Max Load
50% ~ 100%
Max Load
100% ~ 50%
Max Load
50% ~ 100%
Max Load
100% ~ 50%
Max Load
50% ~ 100%
Max Load
100% ~ 50%
Max Load
Overshoot
Settling Time
Overshoot
Settling Time
Overshoot
Settling Time
Overshoot
Settling Time
Overshoot
Settling Time
Overshoot
Settling Time
Overshoot
Settling Time
Overshoot
Settling Time
Overshoot
Settling Time
Overshoot
Settling Time
Min
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Typ
V
O
=1.8 V
V
O
=1.5 V
V
O
=1.0 V
V
O
=0.9 V
Note:
All specifications are typical at 8V input, full load at 25
°C
unless otherwise stated.
General Specifications
Parameter
Efficiency
V
O
=5.0 V
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
V
O
=0.9 V
Min
NE
W
Typ
95%
93%
91%
88%
87%
85%
84%
82%
300 kHz
-
8,278,709 hours
0.78 x 0.7 x 0.32
19.812 x 17.78 x 8.128
0.7 x 0.308 x 0.65
17.78 x 7.82 x 16.51
5.1 g
-
DE
Max
-
-
-
-
-
-
-
-
400 kHz
110% V
O
-
V
O
=1.2 V
110 mV
60 uS
110 mV
60 uS
110 mV
60 uS
110 mV
60 uS
110 mV
60 uS
110 mV
60 uS
110 mV
60 uS
110 mV
60 uS
110 mV
60 uS
110 mV
60 uS
NO
TF
OR
Switching Frequency
Output Trim Range
MTBF
1
91%
89%
87%
84%
83%
81%
80%
78%
200 kHz
90% V
O
Protection Features
Dimensions (surface mount)
Inches (L
×
W
×
H)
Millimeters (L
×
W
×
H)
Dimensions (vertical)
Inches (L
×
W
×
H)
Millimeters (L
×
W
×
H)
Weight
Notes:
All specifications are typical at 25
°C
unless otherwise stated.
1. Min. of 0.9 V output should be 100%Vo.
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
•
Tel 201-432-0463
•
Fax 201-432-9542
•
www.belfuse.com
SIG
NS
Max
150 mV
100 uS
150 mV
100 uS
150 mV
120 uS
150 mV
120 uS
150 mV
100 uS
150 mV
100 uS
150 mV
100 uS
150 mV
100 uS
150 mV
100 uS
150 mV
100 uS
Notes
For all outputs
Output Specifications (continued)
Notes
di/dt = 0.5 A/uS; Vin =
8 V; Ta = 25
°C
and with
a 220 uF electrolytic
capacitor on output
Measured at Vin=8 V, full load
Calculated Per Bell Core SR-332 (I
O
=
80%load; T
a
= 25
°C)
NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 13.2 Vdc Input
0.9 Vdc - 5.0 Vdc/3 A Output
Control Specifications
Parameter
Remote On/Off
Signal Low (Unit On)
Signal High (Unit Off)
-0.3 V
2.8 V
-
-
1V
13.2 V
Min
Typ
Max
Output Trim Equations
DE
Module
Module
C
11.760
17.200
4.496
3.064
3.536
3.536
1.992
0.960
Equations for calculating the trim resistor (in kΩ) 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.
R
TrimDown
NE
W
B
29.400
61.700
15.620
13.830
14.420
10.910
3.490
X
A
=
−
B
V
nom
−
V
adj
R
TrimUp
=
V
adj
C
−
D
−
V
nom
A
Vnom
5.0
3.3
2.5
1.8
1.5
1.2
1.0
0.9
OR
61.940
53.840
9.596
3.850
3.120
TF
1.790
0.511
X
NO
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
•
Tel 201-432-0463
•
Fax 201-432-9542
•
www.belfuse.com
SIG
NS
Notes
Remote on/off pin open, unit on.
Vout
Trim
GND
Rtrimdown
Vout
Trim
GND
Rtrimup
D
14.700
40.200
10.000
10.000
10.000
6.490
1.000
0.100
NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 13.2 Vdc Input
0.9 Vdc - 5.0 Vdc/3 A Output
Efficiency Data
5V module
100.0%
95.0%
Efficiency
Efficiency
90.0%
85.0%
80.0%
75.0%
70.0%
65.0%
60.0%
0.3
0.8
1.5
2.3
3.0
Output current
SIG
NS
3.3V module
100.0%
95.0%
90.0%
85.0%
80.0%
75.0%
70.0%
65.0%
60.0%
8V
13.2V
4.5V
8V
13.2V
DE
0.3
0.8
1.5
2.3
3.0
Output current
NE
W
2.5V module
100.0%
95.0%
90.0%
Efficiency
1.8V module
100.0%
95.0%
90.0%
85.0%
80.0%
75.0%
70.0%
65.0%
60.0%
0.3
0.8
1.5
2.3
3.0
Output current
4.5V
8V
13.2V
85.0%
80.0%
75.0%
70.0%
65.0%
60.0%
0.3
0.8
1.5
2.3
3.0
Output current
4.5V
8V
13.2v
NO
TF
OR
1.5V module
95.0%
90.0%
85.0%
80.0%
75.0%
70.0%
65.0%
60.0%
Efficiency
1.2V module
95.0%
90.0%
Efficiency
Efficiency
85.0%
80.0%
75.0%
70.0%
65.0%
60.0%
0.3
0.8
1.5
2.3
3.0
Output current
4.5V
8V
13.2V
4.5V
8V
13.2V
0.3
0.8
1.5
2.3
3.0
Output current
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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