SRAH-05BT50G [BEL]
DC-DC Regulated Power Supply Module, 1 Output, 6.25W, Hybrid, ROHS COMPLIANT, SMD-7;
| 型号： | SRAH-05BT50G |
| 厂家： | 
BEL FUSE INC. |
| 描述： | DC-DC Regulated Power Supply Module, 1 Output, 6.25W, Hybrid, ROHS COMPLIANT, SMD-7 |
| 文件： | 总5页 (文件大小：146K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
NON-ISOLATED DC/DC CONVERTER
5 Vdc Input Vref/2 / 5 A Output
xRAH-05BT50
RoHS Compliant
Rev.A
•
•
•
•
Non-Isolated
•
•
•
•
Remote On/Off
OCP/SCP
Fixed frequency (300 kHz)
Under-voltage lockout (UVLO)
Current Sink Capability
Low Profile Package (7.82 mm)
UL60950-1 Recognized (UL/cUL)
Description
The Bel xRAH-05BT50 is part of the low cost non-isolated dc/dc converter series. The converter is designed
specifically to provide bus termination voltage in application such as DDR (double data rate) memory where the
bus termination voltage must closely track the I/O bus voltage. The converter accepts a reference input and
programs its output voltage to 50% of the reference. The modules use a SMD or vertical mount package for ease
of layout and space savings.
Part Selection
Output
Input
Voltage
Max. Output
Current
Max. Output
Power
Typical
Efficiency
Part Number
Surface Mount
Part Number
Vertical Mount
Voltage
Vref/2
5 V
5 A
6.25 W
82%
SRAH-05BT50
VRAH-05BT50
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
Min
Typ
Max
Notes
Input Voltage (continuous)
-0.3 V
-
6 V
Output Enable Terminal Voltage
Ambient Temperature
-0.3 V
-40 °C
-55 °C
-
-
-
6 V
85 °C
125 °C
Storage Temperature
Input Specifications
Parameter
Input Voltage
Min
4.5 V
-
Typ
5.0 V
-
Max
5.5 V
2 A
Notes
Input Current (Source)
Input Current (Sink)
-1.5 A
60 mA
15 mA
Input Current (No load)
Remote Off Input Current
-
-
-
9 mA
Input Reflected Ripple Current
(rms)
Measured with simulated source
impedance of 500 nH, 5 Hz to 20 MHz;
& one 270 uF/16 V capacitor with ESR =
0.018 ohm max. at 100 kHz
-
-
30 mA
50 mA
Input Reflected Ripple Current
(pk-pk)
I2t Inrush Current Transient
Vref Voltage
110 mA
140 mA
-
0 V
4.19 V
-
0.02 A2s
2.5 V
0.05 A2s
4 V
Turn-on Voltage Threshold
Turn Off Voltage threshold
4.3 V
4.5 V
3.8 V
4.49 V
Notes: 1. All tests are measured at Vref = 2.5 V.
2. 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 CONVERTER
5 Vdc Input Vref/2 / 5 A Output
Output Specifications
Parameter
Min
Typ
Max
Notes
Output Voltage Set Point
0.99* (Vref/2) V
Vref/2
1.01* (Vref/2) V
Vin=5 V, Iout=full load.
Load Regulation
Line Regulation
-
-
3 mV
1 mV
6 mV
3 mV
Regulation Over Temperature
-
15 mV
20 mV
(-40 °C to +85 °C)
Output Current
Output Current Threshold
Short Circuit Surge Transient
0 A
6.5 A
-
-
-
5 A
12.5 A
0.04 A2s
0.08 A2s
Tested at: 0-20 MHz BW;
with 1 uF ceramic capacitor
at the output
Ripple and Noise (rms)
Ripple and Noise (pk-pk)
-
-
12 mV
45 mV
20 mV
90 mV
Turn On Time
Overshoot at Turn on
Output Capacitance
-
-
-
12 mS
0%
-
20 mS
3%
2200 uF
Notes: 1. All specifications are typical at nominal input, full load at 25 °C unless otherwise stated.
2. The modules track the transient response of the reference input. See the figure in TR data on Page 4.
3. The turn-off undershoot of the module is below 100 mV if a 220 uF aluminum cap is added at the output.
4. All tests are measured at Vref=2.5 V.
General Specifications
Parameter
Min
Typ
Max
Notes
Efficiency (source)
79%
82%
-
Measured at Vin=5V, lo=lo-max full load
Efficiency (sink)
78%
81%
-
Measured at Vin=5V, lo=lo-max full load
Switching Frequency
250 kHz
300 kHz
340 kHz
Calculated Per Bell Core SR-332 (IO =
4 A, Vin=5 V, Vref=2.5 V; Ta = 25 °C)
MTBF
8,841,119 hours
Dimensions (surface mount)
Inches (L × W × H)
Millimeters (L × W × H)
Dimensions (vertical)
0.78 x 0.7 x 0.32
19.812 x 17.78 x 8.128
Inches (L × W × H)
Millimeters (L × W × H)
0.7 x 0.308 x 0.65
17.78 x 7.82 x 16.51
4.7 g
Weight
-
-
Note: All specifications are typical at nominal input, full load at 25 °C unless otherwise stated. All tests are
measured at Vref=2.5 V.
Control Specifications
Parameter
Min
Typ
Max
Notes
Remote On/Off
-0.3 V
-
-
-
-
1.35V (Vin=4.5V)
1.65V (Vin=5.5V)
5.5 V
Signal Low (Unit Off)
-0.3 V
Remote on/off pin open, unit on
3.15 V(Vin=4.5V)
3.85 V(Vin=5.5V)
Signal High (Unit On)
5.5 V
Note: All tests are measured at Vref=2.5 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 CONVERTER
5 Vdc Input Vref/2 / 5 A Output
Efficiency Data
Efficiency Curve
87.0%
86.0%
85.0%
84.0%
83.0%
82.0%
81.0%
80.0%
79.0%
4.5 V
5.0 V
5.5 V
1.0
2.0
3.0
4.0
5.0
Output Current (A)
Efficiency is tested at Vref=2.5 V
Thermal Derating Curves
VRAH-05BT50
SRAH-05BT50
Test Condition: Derating curves are tested at nominal input voltage and Vref=2.5V.
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 CONVERTER
5 Vdc Input Vref/2 / 5 A Output
Ripple and Noise Waveform
5 Vdc Input, 1.25 Vdc Output
Note: Ripple and Noise at max load, with 1uF ceramic cap at the output, Ta=25 deg C.
Transient Response Waveforms
Channel 1: Transient response tracking.
Channel 2: Transient response of the reference input.
Note: Track the transient response of the reference input. No External Load Capacitance.
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 CONVERTER
5 Vdc Input Vref/2 / 5 A Output
Mechanical Outline
SRAH-05BT50
Pin Connections
Pin
Function
1
2
3
4
5
6
7
Remote On/Off (option)
bel
Vin
Ground
Vout
Vref (option)
N/A
N/A
VRAH-05BT50
Pin Connections
Pin
Function
bel
1
Remote On/Off (option)
2
Vin
Ground
Vout
3
4
bel
5
Vref (option)
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. 010807
CORPORATE
FAR EAST
EUROPE
Bel Fuse Inc.
Bel Fuse Ltd.
Bel Fuse Europe Ltd.
206 Van Vorst Street
Jersey City, NJ 07302
Tel 201-432-0463
Fax 201-432-9542
www.belfuse.com
8F/ 8 Luk Hop Street
San Po Kong
Kowloon, Hong Kong
Tel 852-2328-5515
Fax 852-2352-3706
www.belfuse.com
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
相关型号：
SRAH-05BT50R
DC-DC Regulated Power Supply Module, 1 Output, 6.25W, Hybrid, ROHS COMPLIANT, SMD-7
BEL
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