Ajmal Godil ® SUPPLY 1 NODE 1 SUPPLY 2 NODE 2 TV MONITOR VIDEO CAMERA IEEE1394 BUS IEEE1394 BUS PC VCR DN191 F01 PRINTER DN191 F02 1 SHDN VSW 5 VCC VIN LT1776 8 VC FB 4 GND SYNC VIN 8V TO 40V C4 47mF *CTX100-2 10/98/191 C3 1000pF R3 47k C4 100pF C6 100pF 3 2 7 6 L1* 100mH D1 MBRS1100 5V 500mA R1 36.5k C1 100mF R2 12.1k C2 1mF DN191 F03 82 VOUT = 5V 80 VIN = 8V EFFICIENCY (%) 78 VIN = 40V 76 74 72 70 68 66 100 300 200 400 500 ILOAD (mA) DN191 F06 3V/3.3V/5V FOR THE PHY LT1776 PHY DN191 F04 IEEE1394 BUS 8V TO 40V DN191 F07 DN191 F05 0299 56K • PRINTED IN JAPAN ª LINEAR TECHNOLOGY CORPORATION 1998