1 2 3 4 5 6 7 8 A A VOUT 2V - 45V 4 E3 OUT 3 COUT1 2.2uF 25V J1 VOUT Select Exposed Pad Solder Side E1 C2 (Opt.) 1 3 5 7 9 11 13 15 GND CIN1 1uF 50V GND JP1 5 R1 619K 1% SHDN 6 GND OFF B E4 1 2 3 ON GND B C1 + 6.8uF 50V 2 ADJ R2 931K 1% R3 1.24M 1% R4 1.43M 1% R5 1.96M 1% R6 2.8M 1% R7 4.53M 1% R8 Opt. 1 R9 619K 1% 7 E2 VIN OUT 20mA MAX 2 4 6 8 10 12 14 16 VIN 1.2V 1.5V 1.8V 2.0V 2.5V 3.3V 5.0V User U1 LT3008EDC C C LTC CONFIDENTIAL - FOR CUSTOMER USE ONLY Customer Notice D 1 2 3 LINEAR TECHNOLOGY CORPORATION Linear Technology Has Made A Best Effort To Design A Circuit That Meets Customer-Supplied Specifications; However, It Remains The Customer's Responsibility To Verify Proper And Reliable Operation In The Actual Application. Component Substitution And Printed Circuit Board Layout May Significantly Affect Circuit Performance Or Reliability. Contact Linear Technology Applications Engineering For Assistance. This Circuit Is Proprietary To Linear Technology And Supplied For Use With Linear Technology Parts. 4 5 1630 McCARTHY BLVD. MILPITAS, CA. 95035 PHONE (408) 432-1900 FAX (408) 434-0507 Title D www.linear.com 3 A Quiescent Current, 20mA Linear Regulator Size A Document Number Date: Wednesday, December 10, 2008Sheet LT3008EDC, Demo Circuit 1388A 6 7 1 of 8 1 Rev A