LM2711  Product Folder

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 50mA source and sink. The TSSOP-20 package ensures a low profile overall solution.

• 1.4A, 0.17, internal power switch
• V_IN operating range: 2.2V to 7.5V
• 600kHz/1.25MHz selectable frequency step-up DC/DC converter
• 20 pin TSSOP package
• Inrush current limiting circuitry
• External softstart override
• 4 Gamma buffers

• LCD Bias Supplies