NON-ISOLATED DC/DC CONVERTERS
12V Input / 1.2V – 5.0V Output / 7A
S7DB-07A Series
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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-07A
Description
The Bel S7DB-07A modules are a series of non-isolated, step down DC/DC power converters that operate from a nominal
12V source. These converters are available in a range of output voltages from 1.2V to 5.0V. They are packaged in a compact,
low profile, surface mount DIP package for ease of layout and space savings. 7A maximum output is also provided. Standard
features include remote on/off, over current and short circuit protection, UVLO and output voltage adjust. These products may
be used almost anywhere low voltage silicon is employed and a 12V source is available. Typical applications include file
servers, routers, line cards and other computing and communications equipment.
Applications
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Distributed power architectures
Data networking equipment
Telecommunications
Computers and peripherals
Part Number Selection
Output
Voltage
5.0V
3.3V
2.5V
1.8V
1.5V
1.2V
Input
Voltage
12V
12V
12V
12V
12V
12V
Max. Output
Current
7A
7A
7A
7A
7A
7A
Max. Output
Power
35.0W
23.1W
17.5W
12.6W
10.5W
8.4W
Typical
Efficiency
92%
90%
88%
83%
82%
81%
Part Number
S7DB-07A500
S7DB-07A330
S7DB-07A250
S7DB-07A180
S7DB-07A150
S7DB-07A120
©2002 Bel Fuse Inc.
Specifications subject to change without notice. 09.02
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
page 1
POWER PRODUCTS
BP02S7DB-07A
NON-ISOLATED DC/DC CONVERTERS
12V Input / 1.2V – 5.0V Output / 7A
Absolute Maximum Ratings
Parameter
Continuous Input Voltage
Output Enable Terminal Voltage
Ambient Temperature
Storage Temperature
Symbol
Vin
Vouten
Tamb
Tstor
Min
-0.3
-0.3
0
-40
Typical
Max
15
15.3
70
100
Unit
V
V
°C
°C
Note: Use beyond the maximum ratings may cause a reliability degradation of the DC/DC
converter or may permanently damage the device.
Input Specifications
Parameter
Operating Input Voltage
Input Current
5.0V
3.3V
2.5V
1.8V
1.5V
1.2V
No Load Input Current
5.0V
3.3V
2.5V
1.8V
1.5V
1.2V
Remote Off Input Current
Input Reflected Ripple Current
1
5.0V
3.3V
2.5V
1.8V
1.5V
1.2V
Input Reflected Ripple Current (P-P)
1
5.0V
3.3V
2.5V
1.8V
1.5V
1.2V
I
2
t Inrush Current Transient
Turn On Voltage Threshold
Turn Off Voltage Threshold
8.2
70
50
45
35
35
35
0.08
120
100
100
60
60
60
0.16
10.4
A
2
s
V
V
20
15
12
12
12
12
30
25
25
20
20
20
mApk
50
45
35
30
30
30
1
65
60
50
45
45
45
4
mA
mA
rms
Module
All
Symbol
Vin
Iin
4.0
2.6
2.0
1.7
1.4
1.3
mA
Min
10.8
Typical
12
Max
13.2
Units
V
A
Note: Input capacitance two 270µF/16V, ESR = 0.018
Ω
max at 100kHz @ 25° C.
1. With simulated source impedance of 500nH, 5Hz to 20MHz.
©2002 Bel Fuse Inc.
Specifications subject to change without notice. 09.02
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
page 2
NON-ISOLATED DC/DC CONVERTERS
12V Input / 1.2V – 5.0V Output / 7A
Output Specifications
Parameter
Output Voltage Set Point
1
5.0V
3.3V
2.5V
1.8V
1.5V
1.2V
Load Regulation
5.0V
3.3V
2.5V
1.8V
1.5V
1.2V
Line Regulation
Regulation Over Temperature
5.0V
3.3V
2.5V
1.8V
1.5V
1.2V
Total Output Voltage Regulation
5.0V
3.3V
2.5V
1.8V
1.5V
1.2V
Output Ripple and Noise
2
5.0V
3.3V
2.5V
1.8V
1.5V
1.2V
Output Ripple and Noise
2
Output Current Range
Output DC Current Limit
Shor t Circuit Surge
5.0V
3.3V
2.5V
1.8V
1.5V
1.2V
Turn on Time
5.0V
3.3V
2.5V
1.8V
1.5V
1.2V
Overshoot at Turn On
Output Capacitance
All
All
Cout
0
Ton
45
30
30
30
30
30
75
50
50
50
50
50
3
3500
%
µF
All
All
All
Iout
Ioutlim
Ioutsurge
1.2
1.0
0.9
0.7
0.7
0.6
1.7
1.5
1.4
1.2
1.2
1.1
ms
0
9.1
12
75
60
60
60
60
60
15
125
100
100
100
100
100
30
7
16
mVrms
A
A
A
2
s
90
59.5
50
43
40
37
mVp-p
50
33
25
18
15
12
mV
All
15
10
9
9
9
9
3
30
16.5
15
15
15
15
10
mV
mV
Module
Symbol
Vout
4.900
3.247
2.460
1.771
1.476
1.181
5.00
3.30
2.50
1.80
1.50
1.20
5.100
3.353
2.540
1.829
1.524
1.219
mV
Min
Typical
Max
Units
V
POWER PRODUCTS
BP02S7DB-07A
Note: All specifications are typical at nominal input, full load at 25° C unless otherwise stated.
1. Vin = 12V, Iout = full load, Ta = 25° C.
2. 0 - 20MHz, 0.1µF ceramic cap and 10µF aluminum cap on output.
©2002 Bel Fuse Inc.
Specifications subject to change without notice. 09.02
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
page 3
POWER PRODUCTS
BP02S7DB-07A
NON-ISOLATED DC/DC CONVERTERS
12V Input / 1.2V – 5.0V Output / 7A
Output Specifications
Parameter
Transient Response
3
∆
V 50% to 100% of Max Load
Settling Time
5.0V
∆
V 100% to 50% of Max Load
Settling Time
Transient Response
3
∆
V 50% to 100% of Max Load
Settling Time
3.3V
∆
V 100% to 50% of Max Load
Settling Time
Transient Response
3
∆
V 50% to 100% of Max Load
Settling Time
2.5V
∆
V 100% to 50% of Max Load
Settling Time
Transient Response
3
∆
V 50% to 100% of Max Load
Settling Time
1.8V
∆
V 100% to 50% of Max Load
Settling Time
Transient Response
3
∆
V 50% to 100% of Max Load
Settling Time
1.5V
∆
V 100% to 50% of Max Load
Settling Time
Transient Response
3
∆
V 50% to 100% of Max Load
Settling Time
1.2V
∆
V 100% to 50% of Max Load
Settling Time
Ts
110
30
150
70
mV
µs
Ts
110
30
150
70
mV
µs
Ts
100
30
150
70
mV
µs
Ts
100
30
150
70
mV
µs
Ts
100
30
150
70
mV
µs
Ts
100
30
150
70
mV
µs
Ts
100
25
150
50
mV
µs
Ts
100
25
150
50
mV
µs
Ts
100
25
165
50
mV
µs
Ts
100
25
165
50
mV
µs
Ts
125
25
250
50
mV
µs
Ts
125
25
250
50
mV
µs
Module
Symbol
Min
Typical
Max
Units
Note: All specifications are typical at nominal input, full load at 25° C unless otherwise stated.
3. di/dt = 0.5A/1µS, Ta = 25° C with a 220µF Tantalum cap at output.
©2002 Bel Fuse Inc.
Specifications subject to change without notice. 09.02
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
page 4
NON-ISOLATED DC/DC CONVERTERS
12V Input / 1.2V – 5.0V Output / 7A
POWER PRODUCTS
BP02S7DB-07A
General Specifications
Parameter
Efficiency
1
5.0V
3.3V
2.5V
1.8V
1.5V
1.2V
Switching Frequency
5.0V
3.3V
2.5V
1.8V
1.5V
1.2V
Output Voltage Trim Range
2
5.0V
3.3V
2.5V
1.8V
1.5V
1.2V
Remote Sense Compensation
Weight
All
All
10.8
90
70
70
90
90
90
110
110
110
120
120
110
10
%
g
Fsw
285
280
238
180
180
180
355
330
280
210
210
210
425
380
322
240
240
240
%
Module
Symbol
η
89
87
85
80
79
78
92
90
88
83
82
81
kHz
Min
Typical
Max
Units
%
1. Vin=12V, full load and Ta=25° C.
2. See graphs on pages 10-13.
Control Specifications
Parameter
Remote On/Off
3
Signal Low (Unit Off)
Signal High (Unit On)
Module
All
All
All
Symbol
Vouten
0
2.5
1
13.2
Min
Typical
Max
Units
V
V
V
3. With remote on/off pin 8 open, the module is on.
Note: On/off pin designed to work with an open collector/drain switch.
©2002 Bel Fuse Inc.
Specifications subject to change without notice. 09.02
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
page 5
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