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参数资料
| 型号： | LSP3102Y12AD |
| 厂商： | LITE-ON SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 1.45 A SWITCHING REGULATOR, 1800 kHz SWITCHING FREQ-MAX, PDSO5 |
| 封装： | SOT-89, 5 PIN |
| 文件页数： | 1/9页 |
| 文件大小： | 179K |
| 代理商： | LSP3102Y12AD |
Liteon Semiconductor Corporation
LSP3102
1A Synchronous Step-Down Converter
Rev1.1
1/9
APPLICATIONS
Microprocessor and DSP core power supplies
Cellular and smart Phones
Wireless and DSL Modems
Portable Instruments
R2
100K
R1
2
C3
10F
5
3
4
1
VOUT 3.3V
GND
VFB
SW
Run
2.2H
VIN 2.5V-6.5V
L1
22pF
C2
C1
4.7F
450K
Vin
LSP3102
Figure1. Typical Application Circuit and Efficiency
FEATURES
High Efficiency - Up to 96%
Low 350A Quiescent Current
Guaranteed 1000mA Output Current
1.5MHz Constant Frequency Operation
Internal Synchronous Rectifier Eliminates Schottky
Diode
2.5V to 6.5V input voltage range
Adjustable Output Voltages From 0.6V to VIN
Fixed Output Voltage Options Available
100% Duty Cycle Low-Dropout Operation
<1A Shutdown Current
Short circuit protection
Thermal shutdown protection
SOT89-5L and QFN3*3-16L package
GENERAL DESCRIPTION
The LSP3102 is a fixed-frequency current-mode
synchronous PWM step down converter that is capable
of delivering 1000mA of output current while achieving
peak efficiency of 96%. Under light load conditions, the
LSP3102 operates in a proprietary pulse skipping
mode, minimizing noise in noise-sensitive applications;
LSP3102 operates in a 100% Duty Cycle Low-Dropout
Operation,
maximizing
battery
life
in
portable
applications. The LSP3102 operates with a fixed
frequency of 1.5MHz, allowing the use of small external
components. The LSP3102 is an ideal solution for
applications powered by Li-Ion batteries or other
portable applications that require small board space.
The LSP3102 is available in a variety of fixed output
voltage options,1.2V, 1.8V,etc, and is also available in
an adjustable output voltage version capable of
generating output voltages from 0.6V to VIN .The
LSP3102 is available in the small SOT89-5L and
QFN3*3-16L package.
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