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PDF LSP3127 Data sheet ( Hoja de datos )
| Número de pieza | LSP3127 | |
| Descripción | 52KHZ 2A PWM Buck DC/DC Converter | |
| Fabricantes | Lite-On | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LSP3127 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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Liteon Semiconductor Corporation
LSP3127
52KHZ 2A PWM Buck DC/DC Converter
FEATURES
Output voltage: 3.3V, 5.0V, 12V, and adjustable
output version
Adjustable version output voltage range:1.23V to
37V±4%
52KHz±15% fixed switching frequency
Voltage mode non-synchronous PWM control
Thermal-shutdown and current-limit protection
ON/OFF shutdown control input
Operating voltage can be up to 40V
Output load current: 2A
Low power standby mode
Built-in switching transistor on chip
SOP8-EP package
APPLICATIONS
Simple High-efficiency step-down regulator
On-card switching regulators
Positive to negative converter
GENERAL DESCRIPTION
The LSP3127 series are monolithic IC that design for
a step-down DC/DC converter, and own the ability of
driving a 2A load without additional transistor
component. Due to reducing the number of external
component, the board space can be saved easily.
The external shutdown function can be controlled by
logic level and then come into standby mode. The
internal compensation makes feedback control have
good line and load regulation without external design.
Regarding protected function, thermal shutdown is to
prevent over temperature operating from damage,
and current limit is against over current operating of
the output switch. The LSP3127 series operates at a
switching frequency of 52 KHz thus allowing smaller
sized filter components than what would be needed
with lower frequency switching regulators. Other
features include a guaranteed ±4% tolerance on
output voltage under specified input voltage and
output load conditions, and ±15% on the oscillator
frequency. The output version included fixed 3.3V,
5V, 12V, and an adjustable type. The package is
available in a standard SOP8-EP package.
PIN CONFIGURATION
SOP8-EP
(Top View)
PIN DESCRIPTION
Name
VIN
OUTPUT
FB
SD
GND
GND
GND
GND
No.
1
2
3
4
5
6
7
8
Description
Operating Voltage Input
Switching Output
Output Voltage Feedback Control
On/Off Shutdown
Ground
Ground
Ground
Ground
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.
1/9 Rev1.2
1 page  
Liteon Semiconductor Corporation
LSP3127
52KHZ 2A PWM Buck DC/DC Converter
TYPICAL APPLICATION CIRCUITS
(1) Fixed Output Circuit
(2) Adjustable Output Circuit
Vout=VFB*(1+R1/R2); VFB=1.23V; R2=1K typical
Remark: For input-output voltage greater than approximately 15V the additional capacitor CFF 100nF is
recommended between FB and Vout. The capacitor type can be ceramic, plastic, etc.
5/9 Rev1.2
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet LSP3127.PDF ] | |
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