5 4 3 2 1 REVISION HISTORY V1 VS1 J1 V1 (+12V) E1 VS1 8 7 D1 SMBJ26CA C1 OPT 1206 C2 OPT 2220 1 3 2 4 D13 BAT42WS-V 1. ALL RESISTORS ARE IN OHMS, 0603. ALL CAPACITORS ARE IN MICROFARADS, 0603. G1 2. INSTALL SHUNTS AS SHOWN ON JUMPERS. VS2 E2 C3 OPT 1206 C4 OPT 2220 1 3 2 C21 0.047uF 50V 0805 4 VOUT J3 1 FG2 D14 BAT42WS-V VS3 D3 SMBJ26CA J6 C8 OPT 1206 C9 OPT 2220 1 C22 0.047uF 50V 0805 4 FG3 18 17 21 2 UV2 R7 590K 0805 OV2 R8 69.8K 0805 R9 130K 0805 C11 1uF 50V 20 3 4 19 5 6 VS1 G1 V1 16 15 VS2 G2 OV1 VS3 V2 13 D15 BAT42WS-V J4 GND C R35 240 1206 G3 VOUT VALID1 VALID2 VALID3 UV2 OV2 SHDN V3 HYS UV3 OV3 CAS EP LED DRIVER /VALID1 /VALID2 5V R30 100k /VALID3 5V R31 100k EN R32 100k B 7 E7 8 E8 9 E9 22 E10 E11 23 24 R11 127k 11 1 2 3 5V HYS RHYS JP1 30mV R33 100k 1 2 3 5V EN ON R36 100k OFF JP2 VALID2 VALID3 EN SHDN JP3 E12 CAS 10 CUSTOMER NOTICE R10 1.05M 0805 APPROVALS LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APP ENG. APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. R12 69.8K 0805 TECHNOLOGY KIM T. VLAD O. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. PRIORITIZED POWERPATH CONTROLLER 3 N/A SCALE = NONE 2 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 SIZE 4 VALID1 SHDN 1 ON 2 3 OFF GND R13 130K 0805 5 E6 G3 12 EN 25 OV3 14 U1 LTC4417CUF UV1 V3 UV3 R28 249 C12 1uF 50V 5V 1 V2 C17 0.1uF 50V 0805 VOUT 2A MAX 1 OV1 R5 69.8K 0805 C10 1uF 50V 2 UV1 R4 1.69M 0805 R6 130K 0805 C19 0.1uF 50V 0805 1 FG3 V1 B Q11 MMBT3904 2 2 C7 47uF 50V SANYO 50CE47BS D18 LN1351C GRN VOUT 6 5 Q3 Si7905DN E4 C18 0.1uF 50V 0805 A 3 Q10 MMBTA42 2 8 7 C6 + OPT 2220 E16 12 VS3 J5 GND 1 3 V3 R34 68k 1206 G2 C C5 OPT 1206 3 2 R26 249 E3 12-11-12 6 5 Q2 Si7905DN FG2 V3 (+8V) DATE VLAD O. VS2 8 7 D2 SMBJ26CA APPROVED D 1 2 V2 (+5V) DESCRIPTION PRODUCTION NOTES: UNLESS OTHERWISE SPECIFIED FG1 R23 249 V2 3 C20 0.047uF 50V 0805 FG1 J2 REV __ 6 5 Q1 Si7905DN D ECO DATE: IC NO. LTC4417CUF DEMO CIRCUIT 1717A 12/11/2012, 01:19 PM REV. 3 SHEET 1 1 OF 2 A 5 4 3 2 1 OPTIONAL CIRCUIT 1 12 1 14 VS3 VDD 3 5V GND 2 7 Q7 FDD4685 VOUT 3 8 2 9 10 11 V2 1 1 FG3 V3 Q8 FDD4685 1 Q9 FDD4685 VOUT 2 2 D7 MMSZ5231BT1G 5.1V OPT 6 Q6 FDD4685 2 1 EN 3 4 5 3 3 VS2 FG2 R19 30.9K Q5 FDD4685 VOUT D 1 2 13 /VALID3 1 2 V1 U2 74HC27PW Q4 FDD4685 2 FG1 D 3 3 VS1 C C VOUT POWER SOURCE U3 74HC27PW D8 LN1351C 1 1 2 13 /VALID1 D9 LN1351C 6 7 E15 A 2 D10 LN1351C 5V GND VDD 1 14 2 1 3 4 5 /VALID3 9 10 11 7 2 R22 1k VALID1 GRN 12 D11 LN1351C 6 1 2 R20 1k VALID2 GRN 8 D16 LN1351C 5V GND OUT ADJ E13 7 R17 845k OPT C16 10nF 10V 0805 C14 10uF 10V 0805 C15 1uF 50V LDO D12 LN1351C GRN VDD 1 14 2 R21 1k B VALID3 GRN R18 115k OPT R29 1k 5V CUSTOMER NOTICE 4 APPROVALS LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APP ENG. 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. 5 D17 LN1351C 1 5V 6 1 IN SHDN /VALID2 V3 GRN U4 LT3060ETS8-5 5 1 2 13 R16 1k 2 GND C13 1uF 50V 8 2 3 GND 4 GND GND 8 REF/BYP AUXILIARY VOLTAGE INPUT 6V - 24V E14 1 R15 1k /VALID1 V2 GRN 9 10 11 B R14 1k V1 GRN 12 3 4 5 /VALID2 2 VALID STATUS U5 74HC27PW 3 TECHNOLOGY KIM T. VLAD O. 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 PRIORITIZED POWERPATH CONTROLLER SIZE N/A SCALE = NONE 2 DATE: IC NO. LTC4417CUF DEMO CIRCUIT 1717A 12/11/2012, 01:19 PM REV. 3 SHEET 1 2 OF 2 A