5 4 3 2 1 REVISION HISTORY VIN E1 VIN 2.4V - 15V RUN ON OFF R3 OPT JP1 RUN 4 RUN MPPC 5 MPPC C10 10pF VCC 3 ON OFF U1 LTC3129EUD-1 R5 OPT MPPC JP2 R6 OPT VCC VS1 VCC GND PWM - 2 PRODUCTION FAB J.NOON 01 - 02 - 13 JP4 VCC PWM 13 14 BST2 C3 10uF 25V 1210 E3 VCC E5 PGOOD PWM VS3 7 VS2 8 VS3 VS1 9 VS1 GND GND GND VS2 VS3 VS2 E4 JP5 VS3 JP6 C * VOUT JUMPER CONFIGURATION JP6 / VS3 VCC GND D * VOUT 5.0V / 200mA VIN > VOUT C4 1uF 25V PGOOD PWM 10 VS2 VS1 VOUT R1 2M VOUT 12 VCC C7 OPT 6.3V B SW2 16 C9 2.2uF R4 2M MPPC VCC GND C VIN DATE PGOOD 11 PGND RUN APPROVED C6 22nF 50V VIN 17 R2 2M DESCRIPTION VOUT 15 2 GND VIN SW1 C5 22nF 50V 1 GND REV L1 EPL3015 -103 C2 1uF 25V BST1 E2 C1 22uF 25V 1210 6 + D C8 OPT 7343 ECO JP5 / VS2 JP4 / VS1 LTC3129 - 1 VOUT GND GND GND 2.5V GND GND VCC GND VCC GND 3.3V 4.1V GND VCC VCC 5.0V VCC GND GND 6.9V VCC GND VCC VCC VCC GND 8.2V 12V VCC VCC VCC 15V B FIXED FREQ BURST MODE JP3 CUSTOMER NOTICE A NOTE: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS ARE IN OHMS, 0402 ALL CAPACITORS ARE IN MICROFARADS, 0603. 5 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 3 APPROVALS PCB DES. NC APP ENG. J.NOON SCALE = NONE TECHNOLOGY 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only TITLE: SCHEMATIC 15V, 200mA SYNCHRONOUS BUCK - BOOST DC / DC CONVERTER WITH 1.3uA QUIESCENT CURRENT SIZE IC NO. REV. LTC3129EUD-1 N/A 2 DEMO CIRCUIT 1923A DATE: 01 - 02 - 13 2 SHEET 1 1 OF 1 A 5 4 3 2 1 D D VOUT VOUT PGOOD PGOOD DUST PWR VOUT VOUT C NC CAUTION: ONLY CONNECT IF VOUT IS CONFIGURED FOR 3.3V J1 3 1 3 5 7 9 11 Q1 ZXMN2F30FH VSUPPLY NC GND PGOOD KEY VBAT RSVD EHORBAT I/O 2 I/O 1 +5V V+ 2 4 6 8 10 12 SMH-106-02-L-D-05 2 1 C PGOOD JP7 PGOOD GND B B CUSTOMER NOTICE 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. A THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 4 3 APPROVALS PCB DES. NC APP ENG. J.NOON SCALE = NONE TECHNOLOGY 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only TITLE: SCHEMATIC 15V, 200mA SYNCHRONOUS BUCK - BOOST DC / DC CONVERTER WITH 1.3uA QUIESCENT CURRENT SIZE IC NO. REV. LTC3129EUD-1 N/A 2 DEMO CIRCUIT 1923A DATE: 01 -02 - 13 2 SHEET 2 1 OF 2 A