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Электронный компонент: XRAH-10J

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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
2.5 V Input 0.9 V-1.65 V/10 A Output

Non-Isolated
Remote
On/Off
Low profile package (7.82 mm)
Short circuit protection
Fixed frequency (300 kHz)
Over
current
protection
Under-voltage lockout (UVLO)
Trim
Function
Description
The Bel xRAH-10Jxx0 is part of the low cost non-isolated dc/dc power 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
1.5 V output is typically 88% 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
1.5 V
2.5 V
10 A
15 W
88%
SRAH-10J150
VRAH-10J150
1.2 V
2.5 V
10 A
12 W
83%
SRAH-10J120
VRAH-10J120
1.0 V
2.5 V
10 A
10 W
80%
SRAH-10J100
VRAH-10J100
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
-40
C
-
125
C
Input Specifications
Parameter
Min
Typ
Max
Notes
Input Voltage
2.25 V
2.5 V
2.75 V
Input Current (no load)
-
75 mA
-
Input Current (full load)
Vo=1.5 V
Vo=1.2 V
Vo=1.0 V
-
-
-
6.8 A
5.6 A
4.9 A
-
-
-
Remote Off Input Current
-
4 mA
8 mA
Input Reflected Ripple Current (pk-pk)
-
80 mA
150 mA
Input Reflected Ripple Current (rms)
-
25 mA
50 mA
Tested with simulated source
impedance of 500 nH, 5 Hz to
20 MHz; with a 270 uF/16 V
with ESR=0.018 ohm max, at
100 kHz
at 25
C
I
2
t Inrush Current Transient
-
0.04 A
2
s 0.10
A
2
s
Turn on Voltage Threshold
2 V
2.1 V
2.15 V
Turn off Voltage Threshold
1.8 V
2 V
2.15 V
xRAH-10J Series
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
2.5 V Input 0.9 V-1.65 V/10 A Output

Output Specifications
Parameter
Min
Typ
Max
Notes
Output Voltage Set Point
Vo=1.5 V
Vo=1.2 V
Vo=1.0 V
1.470 V
1.176 V
0.980 V
1.5 V
1.2 V
1.0 V
1.530 V
1.224 V
1.020 V
Test conditions:
Vin=2.5 V, Io=full load
Line Regulation
Vo=1.5 V
Vo=1.2 V
Vo=1.0 V
-
-
-
2 mV
2 mV
2 mV
5 mV
5 mV
5 mV
Load Regulation
Vo=1.5 V
Vo=1.2 V
Vo=1.0 V
-
-
-
5 mV
5 mV
5 mV
10 mV
10 mV
10 mV
Regulation Over Temperature
(-40
C to +85 C)
Vo=1.5 V
Vo=1.2 V
Vo=1.0 V

-
-
-

13 mV
10 mV
9 mV

25 mV
20 mV
20 mV
Output Current
0 A
-
10 A
Current Limit Threshold
13 A
-
25 A
Short Circuit Surge Transient
Vo=1.5 V
Vo=1.2 V
Vo=1.0 V
-
-
-
0.5 A
2
s
0.5 A
2
s
0.5 A
2
s
1.5 A
2
s
1.5 A
2
s
1.5 A
2
s
Ripple and Noise (rms)
-
15 mV
25 mV
Ripple and Noise (pk-pk)
-
50 mV
100 mV
Test conditions:
0-20 MHz BW, with a 1 uF
ceramic capacitor at the
output.
Turn on Time
-
1 mS
2 mS
Overshoot at Turn on
-
0%
3%
Output Capacitance
220 uF
-
4000 uF
Transient Response
Overshoot -
90
mV
125 mV
50% ~ 100%
Max Load
Settling Time
-
30 uS
60 uS
Overshoot -
90
mV
125 mV
100% ~ 50%
Max Load
Settling Time
V
O
=1.5 V
- 30
uS
60
uS
Overshoot -
80
mV
120 mV
50% ~ 100%
Max Load
Settling Time
-
30 uS
60 uS
Overshoot -
80
mV
120 mV
100% ~ 50%
Max Load
Settling Time
V
O
=1.2 V
- 30
uS
60
uS
Overshoot -
80
mV
120 mV
50% ~ 100%
Max Load
Settling Time
-
30 uS
60 uS
Overshoot -
80
mV
120 mV
100% ~ 50%
Max Load
Settling Time
V
O
=1.0 V
- 30
uS
60
uS
Test conditions:
di/dt = 0.5 A/uS; Vin =
2.5 V; with a 220 uF
tantalum capacitor at the
output.
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
NON-ISOLATED DC/DC CONVERTERS
2.5 V Input 0.9 V-1.65 V/10 A Output
General Specifications
Parameter
Min
Typ
Max
Notes
Efficiency
V
O
=1.5 V
V
O
=1.2 V
V
O
=1.0 V
85%
83%
79%
88%
86%
82%
-
-
-
Measured at Vin=2.5 V, full load and
Ta=25
C.
Switching Frequency
250 kHz
300 kHz
350 kHz
Output Trim Range
90%Vo
-
110%Vo
MTBF
4,447,157 hours
Calculated Per Bell Core SR-332 (I
O
=
Nominal; 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 8.13
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 -
4.7
g
-
Control Specifications
Parameter
Min
Typ
Max
Notes
Remote On/Off
Signal Low (Unit Off)
0 V
-
0.5 V
Signal High (Unit On)
2 V
-
5.5 V
Remote on/off pin open, the module is on.

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
1.5 V
49.788
287.900
43.330
226.000
1.2 V
31.241
223.900
43.330
162.000
1.0
V 11.029 92.800 25.550 56.200


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
2.5 V Input 0.9 V-1.65 V/10 A Output
Efficiency Data
Efficiency Curve
74.0%
76.0%
78.0%
80.0%
82.0%
84.0%
86.0%
88.0%
90.0%
92.0%
94.0%
1
2
3
4
5
6
7
8
9
10
Output Current (A)
E
f
f
i
ci
enc
y
2.25 V
2.50 V
2.75 V
Efficiency Curve
72.0%
74.0%
76.0%
78.0%
80.0%
82.0%
84.0%
86.0%
88.0%
90.0%
92.0%
1
2
3
4
5
6
7
8
9
10
Output Current (A)
E
f
f
i
ci
enc
y
2.25 V
2.50 V
2.75 V
xRAH-10J150
xRAH-10J120
Efficiency Curve
70.0%
72.0%
74.0%
76.0%
78.0%
80.0%
82.0%
84.0%
86.0%
88.0%
90.0%
1
2
3
4
5
6
7
8
9
10
Output Current (A)
E
f
fi
ci
en
c
y
2.25 V
2.50 V
2.75 V
xRAH-10J100

Thermal Derating Curve










Note:
Derating curve is for 1.2 V output and tested at nominal input.
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
2.5 V Input 0.9 V-1.65 V/10 A Output

Mechanical Outline
SRAH-10Jxx0
Pin Connections
Pin
Function
1
Remote On/Off (option)
2 Vin
3 Ground
4 Vout
5 Trim
(option)
6 N/A
7 N/A
bel