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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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LM2702 데이터시트(PDF) 1 Page - National Semiconductor (TI) |
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LM2702 데이터시트(HTML) 1 Page - National Semiconductor (TI) |
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1 / 21 page  LM2702 TFT Panel Module General Description The LM2702 is a compact bias solution for TFT displays. It has a current mode PWM step-up DC/DC converter with a 2A, 0.2 Ω internal switch. Capable of generating 8V at 170mA from a Lithium Ion battery, the LM2702 is ideal for generating bias voltages for large screen LCD panels. The LM2702 operates at a switching frequency of 600kHz allow- ing for easy filtering and low noise. An external compensa- tion pin gives the user flexibility in setting frequency compen- sation, which makes possible the use of small, low ESR ceramic capacitors at the output. The LM2702 uses a pat- ented 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 LM2702 has an internal controllable PMOS switch used for control- ling the row driver voltages. The switch can be controlled externally with a control pin and delay time. The LM2702 contains a Vcom amplifier and a Gamma buffer capable of supplying 50mA source and sink. The TSSOP-16 package ensures a low profile overall solution. Features n 2A, 0.2 Ω, internal power switch n V IN operating range: 2.2V to 12V n 600kHz switching frequency step-up DC/DC converter n Inrush current limiting circuitry n External softstart override n Internal 7.3 Ω PMOS switch n PMOS switch control pin n PMOS switch delay pin n Vcom amplifier n Gamma buffer n 16 pin TSSOP package Applications n LCD Bias Supplies Typical Application Circuit 20051131 November 2002 © 2002 National Semiconductor Corporation DS200511 www.national.com |
유사한 부품 번호 - LM2702 |
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