NON-ISOLATED DC/DC CONVERTERS
7.0 Vdc - 13.2 Vdc Input
1.2 Vdc - 3.3 Vdc/5 A Output
xRAH-05Exx0
•
•
•
•
•
Non-Isolated
High Efficiency
High Power Density
RoHS Compliant
•
•
•
•
•
Remote On/Off
Rev.A
Under-Voltage Lockout
OCP/SCP
Low Profile Package (7.82 mm)
UL60950-1 Recognized (UL/cUL)
Fixed Frequency (280 kHz)
Trim Function
Description
The Bel xRAH-05Exx0 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 91% at full load.
Part Selection
Output
Voltage
3.3 V
2.5 V
1.8 V
1.5 V
1.2 V
Input
Voltage
7.0 V - 13.2 V
7.0 V - 13.2 V
7.0 V - 13.2 V
7.0 V - 13.2 V
7.0 V - 13.2 V
Max. Output
Current
5A
5A
5A
5A
5A
Max. Output
Power
16.5 W
12.5 W
9W
7.5 W
6W
Typical
Efficiency
91%
89%
87%
85%
83%
Part Number
Surface Mount
SRAH-05E330
SRAH-05E250
SRAH-05E180
SRAH-05E150
SRAH-05E120
Part Number
Vertical Mount
VRAH-05E330
VRAH-05E250
VRAH-05E180
VRAH-05E150
VRAH-05E120
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.
Absolute Maximum Ratings
Parameter
Input Voltage (continuous)
Output Enable Terminal Voltage
Ambient Temperature
Storage Temperature
Min
-0.3 V
-0.3 V
-40
°C
-40
°C
Typ
-
-
-
-
Max
14 V
14 V
85
°C
125
°C
Notes
Input Specifications
Parameter
Input Voltage
Input Current (no load)
Input Current (full load)
Remote Off Input Current
Input Reflected Ripple Current (pk-pk)
Input Reflected Ripple Current (rms)
I t Inrush Current Transient
Turn on Voltage Threshold
Turn off Voltage Threshold
2
Min
7V
-
-
-
-
-
-
-
3.2 V
Typ
-
70 mA
-
3 mA
120 mA
50 mA
0.04 A s
5V
3.8 V
2
Max
13.2 V
100 mA
2.8 A
-
240 mA
100 mA
0.1 A s
6V
-
2
Notes
With simulated source impedance of
500 nH, 5 Hz to 20 MHz. Use one 270
uF/ 16 V OSCON capacitor with
ESR=0.018 ohm max, at 100kHz at
the input
Note:
All specifications are typical 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
7.0 Vdc - 13.2 Vdc Input
1.2 Vdc - 3.3 Vdc/5 A Output
Output Specifications
Parameter
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
Line Regulation
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
Load Regulation
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
Regulation Over Temperature
(-40
°C
to +85
°C)
Output Current Range
Output DC Current Limit
Short Circuit Surge Transient
Ripple and Noise (rms)
Ripple and Noise (pk-pk)
Turn on Time
Overshoot at Turn on
Output Capacitance
Transient Response
Overshoot
50% ~ 100%
Max Load
Settling Time
Overshoot
100% ~ 50%
Max Load
Settling Time
Overshoot
50% ~ 100%
Max Load
Settling Time
Overshoot
100% ~ 50%
Max Load
Settling Time
-
-
-
-
-
-
0A
6.5 A
-
-
-
-
-
330 uF
-
-
-
-
-
-
-
-
±10 mV
±10 mV
±5 mV
±5 mV
±5 mV
±20 mV
-
-
0.04 A s
20 mV
60 mV
-
-
-
120 mV
60 uS
120 mV
60 uS
120 mV
60 uS
120 mV
60 uS
2
Min
3.200 V
2.425 V
1.745 V
1.455 V
1.164 V
-
-
-
-
-
Typ
3.3 V
2.5 V
1.8 V
1.5 V
1.2 V
±15 mV
±15 mV
±5 mV
±5 mV
±5 mV
Max
3.400 V
2.575 V
1.855 V
1.545 V
1.236 V
±30 mV
±30 mV
±10 mV
±10 mV
±10 mV
±20 mV
±20 mV
±10 mV
±10 mV
±10 mV
±40 mV
5A
12.5 A
0.1 A s
50 mV
100 mV
60 mS
5%
2200 uF
150 mV
120 uS
150 mV
120 uS
150 mV
110 uS
150 mV
110 uS
2
Notes
Test conditions:
Io=50% full load.
0-20 MHz BW, with 330u F
tantalum cap and 10 uF
ceramic cap at output.
3.3 V
1.2 V-2.5 V
Test conditions:
di/dt=0.5 A/us, Vin=10 Vdc,
with 330 uF tantalum cap
and 10 uF ceramic cap at
output.
Note:
All specifications are typical at nominal input, full load at 25
°C
unless otherwise stated.
Control Specifications
Parameter
Remote On/Off
Signal Low (Unit Off)
Signal High (Unit On)
Min
-0.3 V
3V
Typ
-
-
Max
1.2 V
14 V
Notes
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
7.0 Vdc - 13.2 Vdc Input
1.2 Vdc - 3.3 Vdc/5 A Output
General Specifications
Parameter
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
Switching Frequency
Output Voltage Trim Range
MTBF
Dimensions (surface mount)
Inches (L
×
W
×
H)
Millimeters (L
×
W
×
H)
Dimensions (vertical)
Inches (L
×
W
×
H)
Millimeters (L
×
W
×
H)
Weight
-
88%
86%
84%
82%
80%
200 kHz
90%
91%
89%
87%
85%
83%
280 kHz
-
TBD
-
-
-
-
-
360 kHz
110%
Calculated Per Bell Core SR-332
(Vin=10 V; Vo=3.3 V; I
O
=5 A; T
a
= 25
°C)
Vin=10 V, full load.
Min
Typ
Max
Notes
0.78 x 0.7 x 0.32
19.81 x 17.78 x 8.13
0.7 x 0.308 x 0.65
17.78 x 7.82 x 16.51
5g
-
Output Trim Equations
Equations for calculating the trim resistor given the desired adjusted voltage (Vadj) and the nominal output
voltage of the converter (Vo) are shown below. 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.
Vout
Rtrim
_
up
=
(
A
−
B
)
Kohm
Vo
,
adj
−
Vo
C
−
D
)
Kohm
Vo
−
Vo
,
adj
Module
Trim
Rtrim-up
GND
Rtrim
_
down
=
(
Vout
Rtrim-down
Module
Trim
Output Voltage
3.3 V
2.5 V
1.8 V
1.5 V
1.2 V
A
17.2
4.496
3.064
3.712
3.712
B
40.2
5.62
10
5.62
5.62
C
53.841
9.556
3.849
3.254
1.87
D
61.7
11.24
13.83
10.26
10.26
GND
Note:
Vo=3.304 V for 3.3 V output voltage; Vo=1.805 V for 1.8 V output voltage; Vo=1.501 V for 1.5 V output
voltage; Vo=1.203 V for 1.2 V output voltage.
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
7.0 Vdc - 13.2 Vdc Input
1.2 Vdc - 3.3 Vdc/5 A Output
Efficiency Data
Efficiency Curve
100.0%
80.0%
Efficiency
60.0%
40.0%
20.0%
0.0%
0.50
1.25
2.50
3.75
5.00
Output Current (A)
7V
10 V
13.2 V
Efficiency
100.0%
80.0%
60.0%
40.0%
20.0%
0.0%
0.50
1.25
2.50
3.75
5.00
Output Current (A)
7V
10 V
13.2 V
Efficiency Curve
Vo=3.3 V
Vo=2.5 V
Efficiency Curve
100.0%
80.0%
Efficiency Curve
100.0%
80.0%
Efficiency
7V
10 V
13.2 V
Efficiency
60.0%
40.0%
20.0%
0.0%
0.50
1.25
2.50
3.75
5.00
Output Current (A)
60.0%
40.0%
20.0%
0.0%
0.50
1.25
2.50
3.75
5.00
Output Current (A)
7V
10 V
13.2 V
Vo=1.8 V
Vo=1.5 V
Efficiency Curve
100.0%
80.0%
Efficiency
60.0%
40.0%
20.0%
0.0%
0.50
1.25
2.50
3.75
5.00
Output Current (A)
7V
10 V
13.2 V
Vo=1.2 V
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
7.0 Vdc - 13.2 Vdc Input
1.2 Vdc - 3.3 Vdc/5 A Output
Thermal Derating Curves
Vo=3.3 V
Vo=1.8 V
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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