3 L1-1 15uH SDQ12-150 Vin 2.7V - 12V 2 C2 2.2uF,16V X5R C1 330pF E3 4 VIN JP1 Output Vout* -15V 3 1 E2 SHDN C5 2.2uF,16V X5R C4 5.6pF 1 JP2 Output Gnd E4 U2 LT3483ES6 2 1 D R4 806K 1% E6 C10 2.2uF,16V X5R C9 5.6pF Vin 2.7V 3.3V 4.2V C8 0.1uF,16V X7R 3 GND 2 SHDN Vout* -8V R3 10 * FB 4 Gnd VIN Iout Max 8mA 20mA 40mA 5 1 2 6 SW On Off 1 C D1 PMEG2005EB 1 C7 4.7uF,10V X5R 3 Vin 2.7V 6.0V 12V B L2 C6 10uH 0.22uF,16V LQH2MCN100K02 X5R 1 For -12V change the value of R2 to 1.21M For -5V change the value of R2 to 511k 5 3 -15V Inverter E5 ** C3 0.1uF,16V X7R 1 Vin 2.7V - 4.2V 8 * ** R2 1.5M 1% FB U1 LT3483ES6 B E7 R1 10 SW Off On 6 4 Gnd 7 A 1 2 3 6 L1-2 15uH SDQ12-150 1 1 A 5 GND 1 E1 4 D 2 2 1 1 1 -8V Inverter Iout Max 20mA 25mA 30mA C Gnd E8 LINEAR TECHNOLOGY CORPORATION D Title 1 2 3 4 5 1630 McCARTHY BLVD. MILPITAS, CA. 95035 PHONE (408) 954-8400 FAX (408) 434-0507 D Inverting DC/DC Converter Size A Document Number Date: Wednesday, October 20, 2004 Demo Circuit 801A 6 Sheet 7 Rev A LT3483ES6 1 8 1 of