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CD43-470 Folha de dados(PDF) 2 Page - Microsemi Corporation |
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CD43-470 Folha de dados(HTML) 2 Page - Microsemi Corporation |
2 / 8 page Microsemi Microsemi Integrated Products 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 2 Copyright © 2002 Rev. 3.0a, 2005-03-14 LX1734 1.0MHz Inverting DC/DC Converter TM ® ABSOLUTE MAXI MUM RATI NGS Supply Voltage (VIN), Shutdown (SD ).................................................... 0 to 10V SW Voltage....................................................................................... -0.4V to 20V NFB Voltage.................................................................................................... -2V Current Into NFB Pin................................................................................... ±1mA Operating Temperature Range ............................................................0°C to 85°C Maximum Junction Temperature ................................................................. 125°C Storage Temperature......................................................................-65°C to 150°C Peak Package Solder Reflow Temperature (40 second maximum exposure) ..................................................... 260°C (+0, -5) Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground. Currents are positive into, negative out of specified terminal . TH ERM A L DATA LM Plastic LM 6-Pin THERMAL RESISTANCE -JUNCTION TO AMBIENT, θJC 8 °C/W Junction Temperature Calculation: TJ = TA + (PD x θJC). The θJC numbers are guidelines for the thermal performance of the device/pc-board system. All of the above assume no ambient airflow. PACKAGE PIN OUT SW GND NFB SD V IN N/C* ** LM PACKAGE (Top View) * Not Internally Connected. ** Package heatsink should be connected to ground or left floating. RoHS / Pb-free 100% Matte Tin Lead Finish FUNCTIONAL PIN DESCRIPTION NAME DESCRIPTION SW Power Switch Pin GND Common ground reference NFB Feedback Pin - Connect to a resistive divider in order to set the output voltage. Feedback threshold is -1.235V. Given the typical NFB bias current (INFB) of 4µA flows out of the pin, the suggested value for R2 is 10K. Given R2, set R1 according to: () NFB I R VOUT R + − = 2 235 . 1 235 . 1 1 VIN Input Supply – Input pin must be locally bypassed. SD Shutdown, Connected to >2V, device is active. |
Nº de peça semelhante - CD43-470 |
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Descrição semelhante - CD43-470 |
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