|
|
PDF LSP5527 Data sheet ( Hoja de datos )
| Número de pieza | LSP5527 | |
| Descripción | 2A 27V Synchronous Buck Converter | |
| Fabricantes | Lite-On | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de LSP5527 (archivo pdf) en la parte inferior de esta página. Total 15 Páginas | ||
|
No Preview Available !
LSP5527
2A 27V Synchronous Buck Converter
General Description
The LSP5527 is a monolithic synchronous buck regulator. The device integrates 95 mΩ MOSFETS that
provide 2A continuous load current over a wide operating input voltage of 4.5V to 27V. Current mode control
provides fast transient response and cycle-by-cycle current limit. An adjustable soft-start prevents inrush
current at turn on.
Features
2A Output Current
Wide 4.5V to 27V Operating Input Range
Integrated Power MOSFET Switches
Output Adjustable from 0.925V to 0.8Vin
Up to 96% Efficiency
Programmable Soft-Start
Stable with Low ESR Ceramic Output Capacitors
Fixed 340KHZ Frequency
Cycle by Cycle Over Current Protection
Short Circuit Protection
Input Under Voltage Lockout
Package： SOP-8L
Applications
Distributed Power Systems
Networking Systems
FPGA, DSP, ASIC Power Supplies
Green Electronics/ Appliances
Notebook Computers
Please be aware that an Important Notice concerning availability, disclaimers, and use in critical
applications of LSC products is at the end of this document.
LSP5527 Rev. 1.1
1 of 15
www.liteonsemi.com
2014/8/27
1 page  
LSP5527
2A 27V Synchronous Buck Converter
Electrical Characteristics
(TA=25°C, unless otherwise specified)
Characteristics
Feedback Voltage
Feedback Overvoltage Threshold
High-Side Switch-On Resistance*
Low-Side Switch-On Resistance*
High-Side Switch Leakage
Upper Switch Current Limit
Symbol
VFB
COMP to Current
Limit Transconductance
GCOMP
Error Amplifier Transconductance
Error Amplifier DC Gain*
Switching Frequency
Short Circuit Switching Frequency
Maximum Duty Cycle
Minimum On Time*
EN Shutdown Threshold Voltage
GEA
AVEA
fSW
DMAX
EN Shutdown Threshold Voltage
Hysteresis
EN Lockout Threshold Voltage
EN Lockout Hysteresis
Supply Current in Shutdown
IC Supply Current in Operation
Input UVLO Threshold Rising
Input UVLO Threshold Hysteresis
Soft-start Current
Soft-start Period
Thermal Shutdown Temperature*
UVLO
Note : * Guaranteed by design, not tested.
Conditions
4.5V ≤ VIN ≤ 27V
VEN = 0V, VSW = 0V
Minimum Duty Cycle
ΔICOMP = ±10uA
VFB = 0
VFB = 0.8V
VEN Rising
VEN = 0
VEN = 3V, VFB = 1.0V
VEN Rising
VSS = 0V
CSS = 0.1uF
Hysteresis =25°C
Min
0.900
2.7
1.1
2.2
3.80
Typ
0.925
1.1
95
95
3.5
3.3
920
480
340
120
92
220
1.4
180
2.5
130
0.3
1.3
4.05
100
6
15
160
Max
0.950
10
2
2.7
3.0
1.5
4.40
Unit
V
V
mΩ
mΩ
uA
A
A/V
uA/V
V/V
KHz
KHz
%
nS
V
mV
V
mV
uA
mA
V
mV
uA
mS
°C
LSP5527 Rev. 1.1
5 of 15
www.liteonsemi.com
2014/8/27
5 Page 
LSP5527
2A 27V Synchronous Buck Converter
Typical Characteristics
(Vin=12V, Io=0 mA, Temperature = 25 degree C, unless otherwise specified)
Light Load Operation (No load)
Vin=12V, Iin=8.2 mA, Vout=3,3V
Heavy Load Operation (2A Load)
Vin=12V, Vout=3,3V
Startup Vin=12V, Vout=3.3V, Iout=1A
through Vin.
through Enable.
Short Circuit Protection Vin=12V
LSP5527 Rev. 1.1
11 of 15
www.liteonsemi.com
2014/8/27
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet LSP5527.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| LSP5522 | 2A Synchronous Step Down DC/DC Converter | Lite-On |
| LSP5522L | 2A 18V Synchronous Buck Converter | Lite-On |
| LSP5523 | 3A 27V Synchronous Buck Converter | Lite-On |
| LSP5526 | 2A 27V Synchronous Buck Converter | Lite-On |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |