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參數(shù)資料
| 型號： | LSP3112LAD |
| 廠商： | LITE-ON SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, PDSO10 |
| 封裝： | 3 X 3 MM, PLASTIC, DFN-10 |
| 文件頁數(shù)： | 1/11頁 |
| 文件大?。?/td> | 396K |
| 代理商： | LSP3112LAD |
Liteon Semiconductor Corporation
LSP3112
Dual Channel 1.5 MHZ, 600mA Synchronous Step-Down Converter
Rev1.1
1/11
APPLICATIONS
Portable Media Players
Digital Still Cameras
Cellular Telephones
PDAs
Wireless and DSL modems
PIN CONFIGURATION
(Top View)
10-Lead (3mm ×3mm) Plastic DFN
10-Lead Plastic MSOP
Exposed Pad is PGND (Pin 11)
Must be connected to GND.
FEATURES
High Efficiency : Up to 96%
1.5MHz Constant Frequency Operation
600mA Output Current at VIN=3.0V
Very Low Quiescent Current of 500A
No Schottky Diode Required
Low RDS(ON) Internal Switches: 0.35
0.6V reference allows low Output Voltage
Current Mode Operation for excellent line and
load transient Response
Short-Circuit &Thermal Fault Protection
＜
1A Shutdown Current
Power-on Reset Output
Externally Synchronized Oscillator
Small
Thermally
Enhanced
MSOP10
and
DFN3*3-10L Packages
1
2
3
4
5
9
8
7
6
10
11
EXPOSED PAD
VFB1
RUN1
VIN
SW1
GND
VFB2
RUN2
POR
SW2
NC
1
2
3
4
5
9
8
7
6
10
11
EXPOSED PAD
VFB1
RUN1
VIN
SW1
GND
VFB2
RUN2
POR
SW2
NC
GENERAL DESCRIPTION
The LSP3112 is a dual channel high efficiency
monolithic synchronous step down current mode
DC-DC converter operating at 1.5MHz constant
frequency. The device integrates a main switch and a
synchronous rectifier for high efficiency without an
external Schottky diode for each of the channels. The
LSP3112 can operate from a 2.5V to 5.5V input voltage
and is ideal for powering portable equipment that runs
from a single cell lithium-Ion (Li+) battery. It can supply
600mA output current for each channel and can also
run at 100% duty cycle for low dropout operation,
extending battery life in portable system. For LSP3112,
Pulse Skipping Mode operation at light loads provides
very low output ripple voltage for noise sensitive
applications.
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