5 4 3 R15 CLKOUT E1 PHSMD 2 DRVCC 0 E12 D5 E2 TRCKSS1 opt. JP1 PHSMD 1 1 0 105K 1% 20K 1% R28 C20 0.01uF C5 1000pF 31 R7 C6 147K 1% 30 opt. 32 10 1 2 3 C PLLIN/FCB 5 E7 JP4 RUN1 TRCKSS2 2 10 3 ON DCM CCM 100pF C15 2 1 1 R19 8.2K 13 R11 10 R13 R20 20K 12 R10 42.2K 470pF C16 11 C14 1000pF opt. OFF VIN 7 R9 3 JP3 FCB R27 1K 6 8 9 R14 30.1K 1% R29 CLKOUT SENSE1+ BOOST1 SENSE1- TG1 VOSENSE1 SW1 PLLFLTR RUN1 FCB/PLLIN SGND TRCKSS2 SENSE2- VIN DRVCC INTVCC BG1 PGND BG2 SENSE2+ SW2 ITH2 TG2 VOSENSE2 NC BOOST2 RUN2 28 25 CB1 0.1uF SW1 24 21 19 20 18 E6 4 D2 opt. D1 opt. R30 CMDSH-3 23 22 C4 1.0uF GND 26 R17 INTVCC 0 + C11 4.7uF 10V C10 1.0uF JP8 C12 0.1uF VIN CIN1 10uF 25V C13 SW2 CIN2 10uF 25V + CIN3 33uF 35V 17 16 CB2 0.1uF 15 D3 CMDSH-3 14 NC 1.0uF 25V D4 opt. Q2 IRF8313PBF VOUT2 196K 1% L2 RSENS2 2.2uH 0.008 RUN2 3 ON OFF R22 VOUT2 3.3V/5A + COUT2 220uF 4V 8.2K 2 JP5 1 GND C 2 4 6 8 10 12 14 16 18 20 ANALOG INTERFACE 4 R21 20K B E8 E9 TG2 BG2 1 3 5 7 9 11 13 15 17 19 VIN 7V to 21V 25V 10 0 C9 1.0uF RIN1 R12 10 95.3K 1% C17 ITH1 Q1 IRF8313PBF TG1 BG1 27 E4 + COUT1 220uF 6.3V 7 8 R6 PGOOD 0.007 1 R16 10K TRCKSS1 VOUT1 5V/5A 2.2uH E5 PHSMD 29 R5 PGOOD 1 R4 42.2K 10K 4 RSENS1 7 8 C7 1000pF R8 opt. VOUT1 L1 2 C3 470pF R2 U1 LTC3828EUH 2 R1 10 3 1 550KHz 250kHz 10 C2 100pF JP2 FSET 2 R33 INTVCC 5 6 R3 100K 3 R18 100K 10 5 6 3 D R32 3 INTVCC 2 D 1 B E10 C19 1.0uF GND E11 R34 10 R31 0 R35 10 EXT1 2 E13 VOUT2 R23 opt. TRACEXT2 E14 JP7 VOUT1 TRACK1 1 3 EXT2 2 TRACEXT1 JP6 VOUT2 TRACK2 1 3 R24 TRCKSS2 95.3K TRCKSS1 A C21 0.01uF R25 opt. VOUT1 C22 opt. R26 30.1K CUSTOMER NOTICE CONTRACT NO. LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A APPROVALS DATE CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO DRAWN Chris Pollard 10/25/05 TITLE VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL CHECKED APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT APPROVED PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. ENGINEER Andy Gardner 10/25/05 3 Dual Output Step-Down DC/DC with Tracking DWG NO REV 2 DC980B THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 4 A LTC3828EUH SIZE CAGE CODE DESIGNER 5 TECHNOLOGY 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 SCALE: 2 FILENAME: SHEET 1 1 OF 2 5 4 3 D 2 1 D Optional Circuit VIN VIN 5678 5678 TG1 TG2 Q3 HAT2168H 4 Q4 HAT2168H 4 SW1 C SW2 C 123 123 5678 5678 BG1 BG2 Q5 HAT2165H 4 Q6 HAT2165H 4 123 123 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 CIRUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. A CONTRACT NO. APPROVALS DRAWN DATE Chris Pollard 10/25/05 5 4 TITLE CHECKED LTC3828EUH APPROVED Dual Output Stepdown DC/DC with Tracking A ENGINEER Andy Gardner 10/25/05 SIZE CAGE CODE DESIGNER THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. TECHNOLOGY 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 Tuesday, May 19, 2015 3 SCALE: DWG NO FILENAME: 2 REV 2 DC980B SHEET 2 OF 1 2