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參數資料
| 型號： | LSP3120K50E |
| 廠商： | LITE-ON SEMICONDUCTOR CORP |
| 元件分類： | 穩壓器 |
| 英文描述： | SWITCHING REGULATOR, PSSO5 |
| 封裝： | TO-263, 5 PIN |
| 文件頁數： | 1/9頁 |
| 文件大?。?/td> | 151K |
| 代理商： | LSP3120K50E |
Liteon Semiconductor Corporation
LSP3120
52KHZ 3A PWM Buck DC/DC Converter
Rev1.0
1/9
PIN CONFIGURATION
(1) TO220-5L
(2) TO263-5L
(Top View)
Symbol
Name
Descriptions
1
Vin
Operating Voltage Input
2
Output
Switching Output
3
Gnd
Ground
4
FB
Output Voltage Feedback Control
5
SD
ON/OFF Shutdown
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: 3A
Low power standby mode
Built-in switching transistor on chip
TO220-5L,TO263-5L packages
APPLICATIONS
Simple High-efficiency step-down regulator
On-card switching regulators
Positive to negative converter
GENERAL DESCRIPTION
The LSP3120 series are monolithic IC that design for
a step-down DC/DC converter, and own the ability of
driving a 3A 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 LSP3120 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 packages are
available in a standard 5-lead TO-220 package，
5-lead TO-263 package.
Metal Tab Gnd
1 VIN
2 OUTPUT
3 GND
4 FB
5 SD
1
2
3
4
5
VIN
OUTPUT
GND
FB
SD
Metal Tab Gnd
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