參數(shù)資料
型號(hào)： LM2711MTX-ADJ
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 穩(wěn)壓器
英文描述： TFT Panel Module
中文描述： 1.4 A SWITCHING REGULATOR, 1500 kHz SWITCHING FREQ-MAX, PDSO20
封裝： TSSOP-20
文件頁(yè)數(shù)： 1/20頁(yè)
文件大?。?/td> 846K
代理商： LM2711MTX-ADJ
LM2711
TFT Panel Module
General Description
The LM2711 is a compact bias solution for TFT displays. It
has a current mode PWM step-up DC/DC converter with a
1.4A, 0.17
internal switch. Capable of generating 8V at
300mA from a Lithium Ion battery, the LM2711 is ideal for
generating bias voltages for large screen LCD panels. The
LM2711 can be operated at switching frequencies of 600kHz
or 1.25MHz, allowing for easy filtering and low noise. An
external compensation pin gives the user flexibility in setting
frequency compensation, which makes possible the use of
small, low ESR ceramic capacitors at the output. The
LM2711 uses a patented internal circuitry to limit startup
inrush current of the boost switching regulator without the
use of an external softstart capacitor. An external softstart
pin enables the user to tailor the softstart to a specific
application. The LM2711 contains 4 Gamma buffers capable
of supplying 50mAsource and sink. The TSSOP-20 package
ensures a low profile overall solution.
Features
n
1.4A, 0.17
, internal power switch
n
V
IN
operating range: 2.2V to 7.5V
n
600kHz/1.25MHz selectable frequency step-up DC/DC
converter
n
20 pin TSSOP package
n
Inrush current limiting circuitry
n
External softstart override
n
4 Gamma buffers
Applications
n
LCD Bias Supplies
Typical Application Circuit
20046831
July 2003
L
2003 National Semiconductor Corporation
DS200468
www.national.com
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