Part # LM3211 datasheet

Part Manufacturer: National Semiconductor

National Semiconductor

Part Description: LM3211 Step-up PWM DC DC Converter Integrated with 4 Buffers


Part Details:

LM321 February 2004 1Step-up LM3211Step-up PWM DC/DC Converter Integrated with 4 BuffersGeneral Description Features PWM The LM3211 is a compact bias solution for TFT displays. It n 1.4A, 0.17, internal power switch has a current mode PWM step-up DC/DC converter with a n V operating range: 2.2V to 7.5V IN 1.4A, 0.17 internal switch. Capable of generating 8V at n 600kHz/1.25MHz selectable frequency step-up DC/DC 300mA from a Lithium Ion battery, the LM3211 is ideal for converter DC/DC generating bias voltages for large screen LCD panels. The n 20 pin TSSOP package LM3211 can be operated at switching frequencies of 600kHz n Inrush current limiting circuitry or 1.25MHz, allowing for easy filtering and low noise. An n External softstart override external compensation pin gives the user flexibility in settingfrequency compensation, which makes possible the use of n 4 Gamma buffers Converter small, low ESR ceramic capacitors at the output. TheLM3211 uses a patented internal circuitry to limit startup Applications inrush current of the boost switching regulator without the n LCD Bias Supplies use of an external softstart capacitor. An external softstart n Handheld Devices pin enables the user to tailor the softstart to a specific n Portable Applications application. The LM3211 contains 4 Gamma buffers capable n Cellular Phones/Digital Cameras of supplying 35mA source and sink. The TSSOP-20 packageensures a low profile overall solution. Integrated Typical Application Circuit with 4Buffers 20062231 © 2004 National Semiconductor Corporation DS200622 www.national.com 1 Connection Diagram LM321 Top View 20062204 TSSOP 20 package T = 125°C, = 120°C/W (Note 1)


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LM3211.pdf Datasheet