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PDF MP1482 Data sheet ( Hoja de datos )
| Número de pieza | MP1482 | |
| Descripción | 20V Synchronous Step-Down Converter | |
| Fabricantes | H&M Semiconductor | |
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Hay una vista previa y un enlace de descarga de MP1482 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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03
2A, 20V Synchronous Step-Down Converter
FEATURES
4.6V to 20V operating input range
2A output current
Up to 94% efficiency
High efficiency (>85%) at light load
Adjustable Soft-Start
Fixed 340kHz Switching frequency
Input under voltage lockout
Available in SOP8 package
Start-up current run-away protection
Short circuit protection
Thermal protection
APPLICATIONS
Distributed Power Systems
Networking Systems
FPGA, DSP, ASIC Power Supplies
Green Electronics/ Appliances
Notebook Computers
DESCRIPTION
The MP1482 is a current mode monolithic buck
switching regulator. Operating with an input range
of 4.6-20V, the MP1482 delivers 2A of
continuous output current with two integrated
N-Channel MOSFETs. The internal synchronous
power switches provide high efficiency without
the use of an external Schottky diode. At light
loads, regulators operate in low frequency to
maintain high efficiency and low output ripple.
Current mode control provides tight load transient
response and cycle-by-cycle current limit.
The MP1482 guarantees robustness with
short-circuit protection, thermal protection,
start-up current run-away protection, and input
under voltage lockout.
The MP1482 is available in an 8-pin SOP
package, which provides a compact solution with
minimal external components.
TYPICAL APPLICATION
1
Shenzhen H&M Semiconductor Co.Ltd
http：//www.hmsemi.com
1 page  
03
2A, 20V Synchronous Step-Down Converter
TYPICAL PERFORMANCE CHARACTERISTICS
Vin = 12V, Vo = 3.3V, L = 10μH, Cout = 47μF, TA = +25°C, unless otherwise noted
Steady State Test
VIN=12V, Vout=3.3V
Iout=2A,Iin=0.65A
VO.AC
20mV/div
IL
1A/div
VSW
5V/div
2us/div
Startup through Enable
VIN=12V, Vout=3.3V
Iout=1A(Resistance load)
VO
2V/div
IL
1A/div
VSW
5V/div
2ms/div
Shutdown through Enable
VIN=12V, Vout=3.3V
Iout=1A(Resistance load)
VO
2V/div
IL
1A/div
VSW
5V/div
2ms/div
Heavy Load Operation
2A LOAD
VO.AC
20mV/div
IL
1A/div
VSW
5V/div
2us/div
Medium Load Operation
1A LOAD
VO.AC
20mV/div
IL
1A/div
VSW
5V/div
2us/div
Light Load Operation
0.3A LOAD
VO.AC
20mV/div
IL
1A/div
VSW
5V/div
2us/div
Short Circuit
Protection
VO
2V/div
IL
1A/div
VSW
5V/div
20us/div
Short Circuit
Recovery
VO
2V/div
IL
1A/div
VSW
5V/div
20us/div
Load Transient
VO
0.2V/div
IL
1A/div
VSW
5V/div
40us/div
5
Shenzhen H&M Semiconductor Co.Ltd
http：//www.hmsemi.com
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet MP1482.PDF ] | |
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