5 4 VIN1 3 2 1 REVISION HISTORY INTVCC VDD33 E1 VIN+ R1 0.005 2512 VIN J1 R2 1 1% VIN 4.5V - 14V C2 + 270uF J2 16V VIN1 VDD25 C7 C32 + 270uF REV - 2 2.2uF DESCRIPTION PROTO DATE APPROVED 04/22/15 [j VIN 1uF C3 1uF 16V 0805 GND EXTVCC R3 0 INTVCC 4.7uF C4 R4 0 VIN1 D 4.7uF VDD33 13 ALERTB 14 SHARE_CLK 27 RUN0 17 RUN1 18 RUN1 26 WP1 1 C10 150pF C11 5 OFF 6 3 C13 1500pF 30 29 ITH0 46 47 IIN- 28 ISENSE0+ RUN0 ISENSE0- RUN1 VSENSE0+ WP VSENSE0- C14 10nF TSNS0 10 TSNS1 9 TG1 ITH_R1 SW1 ITH1 ASEL1 20 VOUT0_CFG 21 VOUT1_CFG 22 FREQ_CFG 23 PHASE_CFG 24 VDD25 R22 OPT R23 TSNS0 BG1 TSNS1 ASEL0 ISENSE1ASEL1 VSENSE1+ VOUT0_CFG VSENSE1- PHASE_CFG FAULT0B OPT R27 OPT R28 OPT FAULT1B R32 5 R113 0 1.0V AT 30A J4 GND 8 R16 10 E4 1 VSENSE0+ 2 R17 VSENSE0- OPT VOUT0C VSENSE0- 35 TG1 34 SW1 Q5 BSC050NE2LS Q6 OPT CIN3 10uF 1210 36 4 37 E5 VSENSE1+ VOUT1+ 4 BG1 L2 3 4 CIN4 10uF 1210 C16 220nF R19 0 C15 0.1uF D2 0.25uH J5 VOUT1 744301025 INTVCC 32 CMDSH-3-TR 31 R18 10 1% VOUT1 Q8 BSC010NE2LSI 4 Q9 OPT 4 R20 715 1% R114 0 COUT5 100uF 6.3V 1210 COUT6 100uF 6.3V 1210 COUT7 + 330uF 6.3V 7343 COUT8 + 330uF 6.3V 7343 1.0V AT 30A 15 GND 16 R21 10 1% B E6 R24 OPT VSENSE1- VOUT1- VDD33 VDD33 PGOOD0 VDD33 PGOOD1 OPT COUT4 + 330uF 6.3V 7343 VSENSE1- E13 R31 1 2 3 C9 220nF 48 33 49 41 R26 COUT3 + 330uF 6.3V 7343 7 VSENSE1+ OPT R14 715 1% COUT2 100uF 6.3V 1210 J6 FREQ_CFG OPT R25 Q4 OPT 4 VOUT1_CFG PGOOD0 C17 10nF 42 BG0 COUT1 100uF 6.3V 1210 VIN1 ITH0 PGOOD1 19 ASEL0 MMBT3906-AL3-R SOT-323 Q3 BSC010NE2LSI 4 ITH_R0 ISENSE1+ Q10 D1 0.1uF CMDSH-3-TR SHARE_CLK GND Q7 MMBT3906-AL3-R SOT-323 R15 0 5 25 38 ALERTB BOOST1 ITH1 B BG0 43 BST0 VOUT0 744301025 INTVCC 1500pF 2 C12 150pF SDA PGND JP1 WP ON SW0 BOOST0 J3 5 RUN0 LTC3884EUK SCL 0.25uH 1 2 3 SDA SYNC C8 45 SW0 R5 10 VOUT0 1 2 3 SHARE_CLK 12 44 TG0 5 ALERTB SCL TG0 VOUT0+ 1 2 3 SDA 11 E3 VSENSE0+ L1 U1 5 SCL SYNC EXTVCC CIN2 10uF 1210 4 1 2 3 SYNC 40 CIN1 10uF 1210 1 2 3 R12 R13 4.99K 4.99K 4 1 2 3 R11 4.99K Q2 OPT 1 2 3 R9 R10 4.99K 10K VDD33 R8 10K VDD25 R7 10K INTVCC 39 VIN R6 10K C Q1 BSC050NE2LS OPT 5 C6 5 E2 VIN- 5 C5 IIN+ D C1 R147 OPT ECO OPT R29 10K R30 10K E14 VDD33 R34 10K R35 OPT R36 OPT R37 OPT R38 OPT CUSTOMER NOTICE OPTION FOR TWO-PHASE CONFIGURATION CONNECTION R39 E10 ITH0 E11 VDD25 VSENSE0+ VSENSE1+ VSENSE0- VOUT1 2010 R44 OPT VSENSE1- OPT R45 2010 R47 OPT OPT R46 FAULT1B VOUT0 PGOOD0 OPT 4 TECHNOLOGY `\ [j PGOOD1 OPT THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. HIGH EFFICIENCY, DUAL-OUTPUT SYNCHRONOUS BUCK CONVERTER WITH POWER SYSTEM MANAGEMENT 3 2 N/A SCALE = NONE 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 2010 R48 OPT 2010 5 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 APPLICATION. COMPONENT SUBSTITUTION AND PRINTED APP ENG. CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. R41 OPT OPT R43 RUN1 FAULT0B E12 VDD25 ITH1 RUN0 VDD33 VDD33 R40 OPT R42 INTVCC INTVCC PGOOD0 PGOOD1 EXTVCC EXTVCC FAULT1B R33 10K E9 A FAULT0B DATE: IC NO. LTC3884EUK DEMO CIRCUIT 2165A Thursday, December 03, 2015 1 SHEET 1 REV. 2 OF 3 A 5 4 3 2 OPTIONAL 5.5V BIAS VOUT1 EXTVCC +5.5V VIN U4 1 LT1761ES5-SD R106 VOUT0 1 R86 OPT 2010 3 R87 OUT 5 OPT GND SHDN ADJ R107 34.8K 1% 4 10K BIAS 1 R85 OPT 2010 2 C30 10uF 16V 1210 D IN JP4 ON 2 R105 10K OFF 3 BLEEDER LOADS D C31 10uF 16V 1210 VOUT0 J10 DYNAMIC LOAD TEST CIRCUIT, FOR DEMO BOARD ONLY R88 OPT 2010 C 1 COUT17 COUT18 + 330uF + 330uF 6.3V 6.3V 7343 7343 VOUT0 C COUT19 100uF 6.3V 1210 COUT20 100uF 6.3V 1210 2 COUT21 1.0uF EXT PULSE E7 VOUT1 J11 SUD50N04-8M8P-4GE3 U5 LTC6992IS6-1 2 R93 154k 1% R96 20K 3 MOD OUT GND V+ SET DIV JP5 PULSE 6 5 4 R91 0 2 1 +5.5V R94 1M R95 20K U6 LT1803IS5 C39 5 100nF 2 70Hz, 3% Duty Cycle B R97 681K 1% 3 C41 1.0uF V+ VOUT R92 1 Q24 3 INT C40 150pF -IN Q23 R103 5K C35 100uF 6.3V 1210 1 COUT22 COUT23 + 330uF + 330uF 6.3V 6.3V 7343 7343 4 COUT25 100uF 6.3V 1210 2 COUT26 1.0uF SUD50N04-8M8P-4GE3 R98 10K J12 1 C42 1.0uF 82.5 1% R101 0.01 2512 IOUT STEP B 2 R102 OPT 2512 R104 649 1% E8 GND CUSTOMER NOTICE 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 APPLICATION. COMPONENT SUBSTITUTION AND PRINTED APP ENG. CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. A TECHNOLOGY `\ [j THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 4 3 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 HIGH EFFICIENCY, DUAL-OUTPUT SYNCHRONOUS BUCK CONVERTER WITH POWER SYSTEM MANAGEMENT SIZE 5 COUT24 100uF 6.3V 1210 VOUT1 EXT R100 R99 182 1% C34 100uF 6.3V 1210 2010 1 V+IN 3.3 1% R90 0 R89 2 N/A SCALE = NONE 2 DATE: IC NO. LTC3884EUK DEMO CIRCUIT 2165A SHEET 2 Friday, September 04, 2015 1 REV. 2 OF 3 A 5 4 3 2 1 ALL PARTS ON THIS PAGE ARE FOR DEMO BOARD ONLY, NOT NEEDED IN CUSTOMER DESIGN E27 VDD33 FAULT1B D12 1 2 ALERTB SDA SHARE_CLK SCL SYNC R61 OPT FAULT1B D J16 E22 4 AUX3V4 3 2 1 AUX3V4 SCL GND SDA E23 E24 E25 D E26 D10 OPT SYNC ALERTB SDA SCL R62 OPT E28 FAULT0B SHARE_CLK R63 0 FAULT0B TO DC2086A D11 OPT AUXP 3V3 E20 J7 R65 0 3 4 A1 WP A2 SCL VSS R72 4.99K 8 AUXVCC SDA OPT RUN1 7 EEWP 6 EESCL 5 EESDA DEMO HEADER (F) J8 R73 4.99K R74 OPT R75 OPT RUN1 E31 SGND SW2 RUN0 SW1 RUN1 ON R69 10 5 2 R139 OPT 1206 R142 OPT 5 OFF R70 10 2 OFF C27 10nF DEMO HEADER (M) J9 VIN ON C 4 1 FAULTB CTRL ALERTB SDA SHARE_CLK SCL RESETB AUXP UNUSED UNUSED GND GND 12V 12V 4 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 6 3 100nF VCC R68 R67 OPT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 FAULTB CTRL ALERTB SDA SHARE_CLK SCL RESETB AUXP UNUSED UNUSED GND GND 12V 12V C26 A0 R66 0 E30 TO DC1613A 2 RUN0 R146 OPT C 1 RUN0 3V3 1 2 3 4 5 6 7 8 9 10 11 12 U3 E29 6 3 AUXP SDA GND SCL LGKPWR ALERTB GPIO_1 OUTEN_0 OUTEN_1 GND AUXSCL AUXSDA R64 OPT C28 10nF R126 OPT 24LC025-I/ST E21 GND 3V3 3V3 3V3 3V3 3V3 B 2 B GREEN GREEN Q21 FAULT0B R78 15.8k 1 2N7002A ALERTB RED 2N7002A PGOOD1 D8 GREEN Q22 1 FAULT1B GREEN Q26 R81 127 PGOOD0 2 10K 2 R77 PGOOD0 D9 D7 1 VIN R125 200 3 D6 3 D5 TP0101K Q20 GPIO1 GPIO0 2 R130 200 1 1 2N7002A Q25 PGOOD1 1 CUSTOMER NOTICE 2N7002A 2 VDD33 ALERTB 3 R80 200 2 3 R79 200 3 Q19 DMP3130L-7 3 3V3 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 APPLICATION. COMPONENT SUBSTITUTION AND PRINTED APP ENG. CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. A TECHNOLOGY `\ [j TITLE: SCHEMATIC HIGH EFFICIENCY, DUAL-OUTPUT SYNCHRONOUS BUCK CONVERTER WITH POWER SYSTEM MANAGEMENT SIZE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 4 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 DATE: IC NO. LTC3884EUK DEMO CIRCUIT 2165A Tuesday, October 06, 2015 1 SHEET 3 REV. 2 OF 3 A