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PDF S7DB-12B Data sheet ( Hoja de datos )
| Número de pieza | S7DB-12B | |
| Descripción | NON-ISOLATED DC/DC CONVERTERS | |
| Fabricantes | Bel Fuse | |
| Logotipo |  |
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NON-ISOLATED DC/DC CONVERTERS
5V Input / 1.2V – 3.3V Output / 12A
S7DB-12B Series
• Nonisolated
• Compact, low profile surface mount package
• Fixed frequency
• High efficiency means less power dissipation
• Excellent thermal performance
• Optimized for cost
• Remote on/off
• Undervoltage lockout (UVLO)
• Over current and short circuit protection
• Remote sense
POWER PRODUCTS
BP02S7DB-12B
Description
The Bel S7DB-12B modules are a series of non-isolated, step down DC/DC power converters that operate from a nominal 5V
source. These converters are available in a range of output voltages from 1.2V to 3.3V. They are packaged in a compact, low
profile, surface mount DIP package for ease of layout and space savings. 12A maximum output is also provided. Standard
features include remote on/off, remote sense, over cuDrraentat Sahndeesth4oUrt.ciorcmuit protection, UVLO and output voltage adjust.
These products may be used almost anywhere low voltage silicon is employed and a 5V source is available. Typical applica-
tions include file servers, routers, line cards and other computing and communications equipment.
DataShee
Applications
• Distributed power architectures
• Data networking equipment
• Telecommunications
• Computers and peripherals
Part Number Selection
Output
Voltage
3.3V
2.5V
1.8V
1.5V
1.2V
Input
Voltage
5V
5V
5V
5V
5V
Max. Output Max. Output
Current
Power
12A 39.6W
12A 30.0W
12A 21.6W
12A 18.0W
12A 14.4W
Typical
Efficiency
92%
90%
86%
84%
82%
Part Number
S7DB-12B330
S7DB-12B250
S7DB-12B180
S7DB-12B150
S7DB-12B120
DataSheet4U.com
©2004 Bel Fuse Inc. Specifications subject to change without notice. 03.04
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
page 1
1 page  
www.DataSheet4U.com
NON-ISOLATED DC/DC CONVERTERS
5V Input / 1.2V – 3.3V Output / 12A
POWER PRODUCTS
BP02S7DB-12B
General Specifications
Parameter
Efficiency1
Switching Frequency
Module
3.3V
2.5V
1.8V
1.5V
1.2V
All
Output Voltage Trim Range2
All
Remote Sense Compensation
Weight
All
All
1. Vin=5V, full load and Ta=25° C.
et4U.com 2. See graphs on pages 10-12.
Symbol Min Typical
η
89 92
87 90
83 86
81 84
89 82
Fsw 260 300
90
10.5
DataSheet4U.com
Max
340
110
10
Units
%
kHz
%
%
g
DataShee
Control Specifications
Parameter
Remote On/Off 3
Module
All
Symbol
Vouten
Signal Low (Unit On)
All
Signal High (Unit Off)
All
3. With remote on/off pin 8 open, the module is on.
Min
0
2.5
Typical
Max
1
5.5
Units
V
V
V
DataSheet4U.com
©2004 Bel Fuse Inc. Specifications subject to change without notice. 03.04
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
page 5
5 Page 
www.DataSheet4U.com
NON-ISOLATED DC/DC CONVERTERS
5V Input / 1.2V – 3.3V Output / 12A
Output Voltage Set-Point Adjustment
POWER PRODUCTS
BP02S7DB-12B
S7DB-12B250 Trim Resistor Calculation
Rtrim_ down = ( 3.691 − 6.8)Kohm
Vo −Vo, adj
where,
Vo is the nominal output voltage setpoint when trim pin is open ,Vo=2.509V
Vo,adj is the adjusted output voltage.
Rtrim-down is the resistance required between TRIM and Vo.
270
240
210
180
150.01
120.01
90.01
60.01
30.01
0.01
2.25 2.27
2.3 2.33 2.35 2.38 2.4 2.42 2.45 2.48
Adjusted output voltage Vo,adj (V)
2.5
et4U.com
Rtrim_ up = ( 1.728 − 4.64)Kohm
Vo, adj−Vo
270
240
210
180
where,
150.01
Vo is the nominal output voltage setpoint when trim pin is open ,Vo=2.509V
120.01
Vo,adj is the adjusted output voltage.
90.01
Rtrim-up is the resistance required between TRIM and GND.
60.01
DataSheet4U.co3m0.01
0.01
2.5 2.52 2.55 2.58 2.6 2.63 2.65 2.67 2.7 2.73 2.75
Adjusted output voltage Vo,adj(V)
S7DB-12B180 Trim Resistor Calculation
Rtrim _ down = ( 3.869 −13.84)Kohm
Vo −Vo, adj
where,
Vo is the nominal output voltage setpoint when trim pin is open ,Vo=1.808V
Vo,adj is the adjusted output voltage.
Rtrim-down is the resistance required between TRIM and Vo.
270
240
210
180
150.01
120.01
90.01
60.01
30.01
0.01
1.62 1.64 1.66 1.67 1.69 1.71 1.73 1.75 1.76 1.78 1.8
Adjusted output voltage Vo,adj (V)
DataShee
DataSheet4U.com
3.072
Rtrim_ up = (
−10)Kohm
Vo, adj −Vo
where,
Vo is the nominal output voltage setpoint when trim pin is open ,Vo=1.808V
Vo,adj is the adjusted output voltage.
Rtrim-up is the resistance required between TRIM and GND.
270
240
210
180
150.01
120.01
90.01
60.01
30.01
0.01
1.8 1.82 1.84 1.85 1.87 1.89 1.91 1.93 1.94 1.96 1.98
Adjusted output voltage Vo,adj(V)
©2004 Bel Fuse Inc. Specifications subject to change without notice. 03.04
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
page 11
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet S7DB-12B.PDF ] | |
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