NON-ISOLATED DC/DC CONVERTERS
9.0 Vdc - 18 Vdc Input
15 Vdc/0.8 A Output
xRAH-01KX50
•
•
•
Non-Isolated
High Efficiency
RoHS Compliant
•
•
•
Rev.A
Low Profile Package
Remote On/Off
Active Low
Fixed Frequency (500 kHz)
Description
The Bel xRAH-01KX50 is part of the low cost non-isolated dc/dc converter 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 15 Vdc
output module is typically 87% at full load.
Part Selection
Output
Voltage
15 V
Input
Voltage
9 V - 18 V
Max. Output
Current
0.8 A
Max. Output
Power
12 W
Typical
Efficiency
87%
Part Number
Surface Mount
SRAH-01KX50
Part Number
Vertical Mount
VRAH-01KX50
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)
Remote On/Off (Active Low)
Ambient Temperature
Storage Temperature
Min
-0.3 V
-0.3 V
-40
°C
-40
°C
Typ
-
-
-
-
Max
20 V
20 V
85
°C
125
°C
Notes
Input Specifications
Parameter
Input Voltage
Input Current (no load)
Input Current (full load)
Remoted 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
9V
-
-
Typ
12 V
30 mA
-
18 mA
Max
18 V
45 mA
2.6 A
25 mA
110 mA
30 mA
0.01 A s
8.8 V
8.2 V
2
Notes
-
-
-
8.0 V
7.2 V
75 mA
20 mA
0.003 A s
8.5 V
7.6 V
2
With simulated source impedance of
500 nH, 5 Hz to 20 MHz; Use one
100 uF/20 V tantalum capacitor 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
9.0 Vdc - 18 Vdc Input
15 Vdc/0.8 A Output
Output Specifications
Parameter
Output Voltage Set Point
Line Regulation
Load Regulation
Regulation Over Temperature
(-40°C to +85
°C)
Output Current
Output DC Current Limit
Ripple and Noise (rms)
Ripple and Noise (pk-pk)
Turn On Time
Overshoot at Turn on
Output Capacitance
Transient Response
50% ~ 75%
Max Load
75% ~ 50%
Max Load
Overshoot
Settling Time
Overshoot
Settling Time
-
300 mV
150 mS
300 mV
150 mS
400 mV
200 mS
400 mV
200 mS
di/dt = 0.5 A/ uS; Vin = 12 V;
and with two 10 uF ceramic
capacitors at the output
Min
14.7 V
-
-
-
0.03 A
1A
-
-
-
-
0 uF
Typ
15.0 V
50 mV
20 mV
50 mV
-
-
35 mV
100 mV
20 mS
0%
-
Max
15.3 V
75 mV
30 mV
80 mV
0.8 A
1.5 A
50 mV
150 mV
40 mS
5%
100 uF
BW = 0-20 MHz; with two 10 uF
ceramic capacitors at the output
Notes
Vin=12 V, lout=full load
-
-
-
Note:
All specifications are typical at nominal input, full load at 25
°C
unless otherwise stated.
General Specifications
Parameter
Efficiency
Switching Frequency
MTBF
Dimensions (surface mount)
Inches (L
×
W
×
H)
Millimeters (L
×
W
×
H)
Dimensions (vertical)
Inches (L
×
W
×
H)
Millimeters (L
×
W
×
H)
Weight
Min
85%
450 kHz
Typ
87%
500 kHz
TBD
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
Max
-
550 kHz
Calculated Per Bell Core SR-332 (I
O
=
Nominal; T
a
= 25
°C)
Notes
Measured at Vin=12 V, full load
-
-
Note:
All specifications are typical at 25°C unless otherwise stated.
Control Specifications
Parameter
Remote On/Off
Signal Low (Unit On)
Signal High (Unit Off)
-0.3 V
2.8 V
-
-
0.4 V
Vin
xRAH-01KX50 Remote On/Off pin open, unit
on.
Min
Typ
Max
Notes
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
9.0 Vdc - 18 Vdc Input
15 Vdc/0.8 A Output
Efficiency Data
100.0%
80.0%
Efficiency
60.0%
40.0%
20.0%
0.0%
0.080
0.200
0.400
0.600
0.800
Output current (A)
9V
12V
18V
Thermal Derating Curve
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
9.0 Vdc - 18 Vdc Input
15 Vdc/0.8 A Output
Ripple and Noise Waveforms
Ripple and noise at no load
Ripple and noise at full load
Note:
Ripple and noise at 12 Vdc input, 15 Vdc output, with two 10 uF ceramic capacitors at the output,
Ta=25 deg C.
Transient Response Waveforms
50% to 75% load at 15 Vdc output
75% to 50% load 15 Vdc output
Note:
Transient response at 12 V input, di/dt=0.5 A/uS, with two 10 uF ceramic capacitors at the output, and
Ta=25 deg C.
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
9.0 Vdc - 18 Vdc Input
15 Vdc/0.8 A Output
Mechanical Outline
SRAH-01KX50
Pin Connections
Pin
Function
Remote On/Off
Vin
Ground
Vout
N/A
N/A
N/A
bel
1
2
3
4
5
6
7
VRAH-01KX50
Pin Connections
Pin
1
Function
Remote On/Off
Vin
Ground
Vout
N/A
bel
bel
2
3
4
5
RoHS Compliance
Complies with the European Directive 2002/95/EC, calling for the elimination of lead and
other hazardous substances from electronic products. These parts are not however
compatible with the higher temperatures associated with lead free solder processes and
must be soldered using a reflow profile with a peak temperature of no more than 240 ºC.
©
2007 Bel Fuse Inc. Specifications subject to change without notice. 011007
CORPORATE
Bel Fuse Inc.
206 Van Vorst Street
Jersey City, NJ 07302
Tel 201-432-0463
Fax 201-432-9542
www.belfuse.com
FAR EAST
Bel Fuse Ltd.
8F/ 8 Luk Hop Street
San Po Kong
Kowloon, Hong Kong
Tel 852-2328-5515
Fax 852-2352-3706
www.belfuse.com
EUROPE
Bel Fuse Europe Ltd.
Preston Technology Management Centre
Marsh Lane, Suite G7, Preston
Lancashire, PR1 8UD, U.K.
Tel 44-1772-556601
Fax 44-1772-888366
www.belfuse.com
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