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3513 数据表(PDF) 1 Page - Linear Technology |
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3513 数据表(HTML) 1 Page - Linear Technology |
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1 / 20 page  LT3513 1 3513fa TYPICAL APPLICATION DESCRIPTION FEATURES APPLICATIONS 2MHz High Current 5-Output Regulator for TFT-LCD Panels The LT®3513 5-output adjustable switching regulator provides power for large TFT-LCD panels. The 38-pin 5mm × 7mm QFN device can generate a 3.3V or 5V logic supply along with the triple output supply required for the TFT-LCD panel. A lower voltage secondary logic supply may also be generated with the addition of an external NPN driven by the internal linear regulator. A step-down regulator provides a low voltage output, VLOGIC, with up to 1.2A of current while capable of operating from a wide input range of 4.5V to 30V. A high power step-up con- verter, a lower power step-up converter and an inverting converter provide the three independent output voltages: AVDD, VON and VOFF required by the LCD panel. A high-side PNP provides delayed turn-on of the VON signal and can handle up to 30mA. Protection circuitry ensures that VON is disabled if any of the four outputs are more than 10% below the programmed voltage. n Automotive TFT-LCD Displays n Large TFT-LCD Desktop Monitors n Flat Panel Televisions n 4.5V to 30V Input Voltage Range n Four Integrated Switches: 2.2A Buck, 1.5A Boost, 0.25A Boost, 0.25A Inverter (Guaranteed Minimum Current Limit) n External NPN LDO Driver n Fixed Frequency, Low Noise Outputs n Inductor Current Sense for Buck n Soft-Start for All Outputs n Externally Programmable VON Delay n Three Integrated Schottky Diodes n PGOOD Pin for AVDD Output Disconnect n PanelProtectTM Circuitry Disables VON Upon Fault n Thermally Enhanced 38-Lead 5mm × 7mm QFN Package Start-Up Waveforms AVDD 10V/DIV RUN/SS 2V/DIV VLOGIC 5V/DIV IIN(AVG) 1A/DIV VOFF 10V/DIV VE3 20V/DIV VON 20V/DIV 5ms/DIV 3513 TA01b L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. PanelProtect is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. VC1 7.5k 4.7k 2.7nF 4.7nF 10μF VLDO 3.3V 0.5A VLOGIC 5V 0.5A VOFF –10V 20mA VIN 8V TO 16V 22μF 4.7μH 0.22μF 47nF 15nF 15nF 15nF VON 22V 20mA 2.2μF VC3 30k 165k 232k 10k 1.5nF VC2 VC1 GND 13k 2.2nF VC4 VIN VLOGIC 5V LDOPWR LT3513 UVLO SW2 2.2μF FB5 FB3 BD FB1 SENSE– SENSE+ SW1 BOOST BIAS SW3 6.8μH 42.2k 10k 30.1k 10k 69.8k 10μH 0.47μF 10k 60.4k 178k 53.6k 100k 10k 10μF 10μH AVDD 8V 80mA 10μF 0.47μF NFB4 D4 SW4 RUN-SS3/4 CT RUN-SS2 RUN-SS1 VONSINK E3 VON VON_CLK VON_CLK PGOOD FB2 VLOGIC 5V |
类似零件编号 - 3513 |
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类似说明 - 3513 |
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