參數(shù)資料
型號: L5985TR
廠商: 意法半導體
英文描述: 2A step-down switching regulator
中文描述: 第2A降壓型開關(guān)穩(wěn)壓器
文件頁數(shù): 1/36頁
文件大小: 757K
代理商: L5985TR
October 2007
Rev 2
1/36
1
L5985
2A step-down switching regulator
Features
2A DC output current
2.9V to 18V input voltage
Output voltage adjustable from 0.6V
250KHz switching frequency, programmable
up to 1MHz
Internal Soft-start and Inhibit
Low dropout operation: 100% duty cycle
Voltage feed-forward
Zero load current operation
Over current and thermal protection
VQFN3x3-8L package
Applications
Consumer:
STB, DVD, DVD recorder, car audio, LCD TV
and monitors
Industrial:
Chargers, car battery, PLD, PLA, FPGA
Networking: XDSL, modems, DC-DC modules
Computer:
Optical storage, hard disk drive, printers,
audio/graphic cards
Figure 1.
Application circuit
Description
The L5985 is a step down switching regulator with
2.5A current limited embedded power MOSFET,
so it is able to deliver up to 2A DC current to the
load depending on the application condition.
The input voltage can range from 2.9V to 18V,
while the output voltage can be set starting from
0.6V to V
IN
. Having a minimum input voltage of
2.9V, the device is suitable for buses staring from
for 3.3V bus.
Requiring a minimum set of external components,
the device includes an internal 250KHz switching
frequency oscillator that can be externally
adjusted up to 1MHz.
The QFN package with exposed pad allows
reducing the R
thJA
down to approximately
60°C/W.
VFQFPN8 3x3
www.st.com
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