5 4 3 2 1 Vin 2.7V - 5V D D 3 E1 JP1 2 VIN BATTERY D1 L1 22uH Vout Test E3 1 CMDSH-3 LED1 SW1 LED2 ON/OFF C 5 1 Vin SW 12mA LED3 U1 LT1937ES5 C LED4 B1 BATTERY + C1 1uF 6.3V R2 WHITE 4 SHDN 100K FB 3 C2 0.22uF 16V GND 2 R1 7.5 1% E5 SHDN B B GND GND E2 E4 CONTRACT NO. APPROVALS DRAWN DATE June Wu 11/27/01 TECHNOLOGY TITLE CHECKED LT1937ES5, SINGLE CELL WHITE LED DRIVER APPROVED A ENGINEER 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 David Chen 11/27/01 DESIGNER SIZE CAGE CODE DWG NO REV A DEMO DC484A Friday, December 14, 2001 5 4 3 SCALE: FILENAME: 2 SHEET A 1 OF 1 1