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Analog Devices Inc.
:
DC242A
Page 1: ...adiated EMI are significantly re duced The output voltage is jumper selectable to either 3 3V or 5V The LT1777 uses a 100kHz switching fre quency and current mode control which offers excellent dynami...
Page 2: ...843 946 0362 C7 1 06033A681JAT1A 680pF 25V 5 NPO Capacitor AVX 843 946 0362 D1 1 10BQ100TR 100V 1A Schottky Diode IR 310 322 3331 JP1 JP2 2 2802S 02G2 2mm 2 Pin Jumper Comm Con 626 301 4200 JP1 JP2 2...
Page 3: ...the output voltage with jumper JP1 as shown in Table 1 8 After all connections are made turn on the input power and verify that the output voltage is correct Table 1 POSITION OUTPUT VOLTAGE Jumper JP1...
Page 4: ...nt matches the new load current Sense Inductor The LT1777 uses an external sense inductor to program the dI dt limiting circuitry The minimum usefull induc tance value for the sense inductor is 470nH...
Page 5: ...nected through vias to better handle the power dissipation If the LT1777 is placed on a multilayer board it is desirable to have metal on the inner layers directly underneath the LT1777 This helps in...
Page 6: ...6 DEMO MANUAL DC242 DC DC CONVERTER W PCB LAYOUT A U D FIL Component Side Silkscreen Component Side Solder Mask Component Side Paste Mask...
Page 7: ...to be accurate and reliable However no responsibility is assumed for its use Linear Technology Corporation makes no represen tationthattheinterconnectionofitscircuitsasdescribedhereinwillnotinfringeo...
Page 8: ...A A A B B C C D D D 2000 ALL DIMENSIONS ARE IN MILS 2000 NOTES UNLESS OTHERWISE SPECIFIED 1 WORKMANSHIP SHALL BE IN ACCORDANCE WITH IPC A 600E 2 FINISHED MATERIAL IS FR4 0 062 THICK 2 OZ COPPER 2 LAY...
Page 9: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Analog Devices Inc DC242A...
