MIC2182 Просмотр технического описания (PDF) - Micrel
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MIC2182 Datasheet PDF : 28 Pages
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MIC2182
Predesigned Circuits
A single schematic diagram, shown in Figure 14, can be used
to build power supplies ranging from 3A to 10A at the common
output voltages of 1.8V, 2.5V, 3.3V, and 5V. Components that
vary, depending upon output current and voltage, are listed
in the accompanying Tables 3 through 6.
Micrel
Power supplies larger than 10A can also be constructed
using the MIC2182 using larger power-handling compo-
nents.
The “Power Supply Operating Characteristics” graphs follow-
ing the component and vendor tables provide useful informa-
tion about the actual performance of some of these circuits.
VIN
GND
R7
100k
C3
0.1µF
C2
2.2nF
MIC2182
D2
SD103BWS
VIN
VDD
C5
0.1µF
BST
C6
EN/UVLO HSD
0.1µF
PWM
C4
1nF
VSW
LSD
SS
PGND
C11
(table)
C9
4.7µF
16V
Q2
(table)
L1
(table)
Q1
(table)
D1
(table)
COMP CSH
R1
2k
SYNC
VOUT
VREF
SGND
C13, 1nF
C1
0.1µF
50V
R2
(table)
C7
(table)
VOUT
C12
0.1µF
50V
GND
Figure 14. Basic Circuit Diagram for Use with Tables 3 through 6
Specification
Switching frequency ripple
Maximum ambient temperature
Short-circuit capability
Switching frequency
Limit
1% of output voltage
85° C
Continuous
300kHz
Table 1. Specifications for Figure 14 and Tables 3 through 6
Manufacturer
AVX
Central Semiconductor
Coiltronics
IRC
IR
Micrel
Vishay/Lite On
(diodes)
Vishay/Siliconix
(MOSFETs)
Vishay/Dale
(inductors and resistors)
Sumida
Telephone Number (USA)
(803) 946-0690
(516) 435-1110
(561) 241-7876
(704) 264-8861
(310) 322-3331
(408) 944-0800
(805) 446-4800
Web Address
www.avxcorp.com
www.centralsemi.com
www.coiltronics.com
www.irf.com
www.micrel.com
www.vishay-liteon.com
(800) 554-5665
www.siliconix.com
(800) 487-9437
www.vishaytechno.com
(847) 956-0666
www.japanlink.com/sumida
Table 2. Component Suppliers
April 22, 2004
21
M9999-042204
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