5 4 3 2 1 REVISION HISTORY REV ECO __ DESCRIPTION 2 APPROVED DATE Simon T 11-25-15 PROUCTION COMP0 D D VOUT0 C1 OPT + 0.035 VIA TESTPOINTS R2 0 R1 0805 OPT P1 R3 OPT COUT45 OPT 2.5V COUT1 100uF 1210 COUT2 100uF 1210 COUT3 100uF 1210 + COUT4 470uF 2.5V + COUT5 470uF 2.5V COUT6 100uF 1210 COUT7 100uF 1210 VOSNS0+ C2 OPT P2 CIN1 10uF 1210 + CIN3 150uF 35V CIN4 10uF 1210 CIN5 10uF 1210 CIN6 10uF 1210 GND E4 GND R4 0 F11 F12 J1 J2 J3 K1 K2 K3 L1 L2 L3 M1 M2 M3 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 J8 H9 VOSNS1 VORB1 H8 J9 COMP1b K5 H2 H1 G2 G1 L10 M5 J5 COMP1a TSNS1a VINH0 VINH0 VINH0 VINH0 VINH0 VINH0 VINH0 VINH0 VINH0 TSNS1b A11 A12 B11 B12 C11 C12 D11 D12 E12 CIN7 10uF 1210 INTVCC INTVCC INTVCC R5 F9 G9 VDD33 J7 VDD33 A5 OPT 0805 E2 E1 F2 F1 COMP0 C3 220pF C5 D5 C4 6.8nF E8 R14 2K R17 OPT D8 P4 D10 E6 VOUT0_SNS P5 E10 R18 D9 0 SHARE_CLK ISNS0aISNS0b- ALERT SCL ISNS0a+ ISNS0b+ TSNS0b TSNS0a SDA U1 GPIO0 LTM4677EY GPIO1 WP COMP0a RUN0 COMP0b RUN1 E7 SYNC H7 SHARE_CLK E5 ALERTB E6 SCL D6 SDA E4 GPIO0B + J4 COUT46 + COUT8 OPT 470uF 2.5V 2.5V COUT9 100uF 1210 COUT10 100uF 1210 A1 A2 A3 B1 B2 B3 C1 C2 C3 D1 D2 D3 COUT11 100uF 1210 GND R25 R9 10K R10 10K R11 10K R12 10K SYNC SHARE_CLK ALERTB SCL SDA GPIO0B K6 F5 SW1 RUN0 RUN0 R15 10K F6 VORB0+ VORB0- VDD25 R16 10 ON 5 J6 2 OFF VOSNS0+ VOSNS0- ASEL G4 VOUT0 B R8 10K R120 0 F4 VOSNS0E9 VOUT0 1V / 105A SYNC C5 10nF VOSNS0+ C6 OPT J3 SNUB0 C R7 10K R6 10K SW0 6 3 B10 R13 VIN E5 VINL VINL P3 C OPT 4 1 CIN2 10uF 1210 J2 ISNS1a+ ISNS1b+ J1 SW1 * 4.5V - 16V ISNS1aISNS1b- VIN VINH1 VINH1 VINH1 VINH1 VINH1 VINH1 VINH1 VINH1 VINH1 VIN SNUB1 H12 J11 J12 K11 K12 L11 L12 M11 M12 E2 E3 VIN 0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 FSWPHCFG VOUT0CFG VTRIM0CFG VOUT1CFG VTRIM1CFG H4 G5 H5 G6 H6 R19 787 R20 (OPT) RUN0 R21 (OPT) B R22 (OPT) R23 (OPT) R24 (OPT) DNC DNC DNC DNC VDD25 C10 E11 H11 K10 G7 G8 F7 F8 GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND A4 A6 A7 A8 A9 A10 B4 B5 B6 B7 B8 B9 C4 C6 C7 C8 C9 D4 D7 E3 F3 F10 G3 G10 G11 G12 H3 H10 J4 J10 K4 K7 K8 K9 L4 L5 L6 L7 L8 L9 M4 M6 M7 M8 M9 M10 SGND SGND SGND SGND E7 E8 GND0_SNS R26 0 NOTE: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS ARE 0603. ALL CAPACITORS ARE 0603. * WHEN VIN < 5.75V, SHORT INTVCC TO VIN WITH R5,R34, R61. A A 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. 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 APPROVALS PCB DES. APP ENG. TECHNOLOGY HZ JIAN L. 5 4 3 2 www.linear.com LTC Confidential-For Customer Use Only TITLE: SCHEMATIC HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN µModule REGULATOR WITH DIGITAL POWER MANAGEMENT SIZE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. Fax: (408)434-0507 B SCALE = NONE DATE: IC NO. LTM4677EY REV. 1 DEMO CIRCUIT 2143A-C Monday, November 30, 2015 SHEET 1 1 OF 6 5 4 3 2 1 COMP1 D D VOUT1 C7 OPT J5 C8 OPT + R27 OPT CIN8 10uF 1210 CIN9 10uF 1210 CIN10 10uF 1210 CIN11 10uF 1210 R32 0 F11 F12 COUT12 100uF 1210 COUT13 100uF 1210 COUT14 + COUT15 100uF 470uF 1210 2.5V + COUT16 470uF 2.5V COUT17 100uF 1210 COUT18 100uF 1210 R28 OPT E9 VOSNS1 VOUT1_SNS J1 J2 J3 K1 K2 K3 L1 L2 L3 M1 M2 M3 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 H9 C9 OPT VOSNS1 J8 J9 VORB1 H8 COMP1a COMP1b J5 TSNS1a TSNS1b K5 H2 H1 ISNS1a+ ISNS1b+ G2 G1 M5 L10 VINH0 VINH0 VINH0 VINH0 VINH0 VINH0 VINH0 VINH0 VINH0 R31 OPT P7 ISNS1aISNS1b- A11 A12 B11 B12 C11 C12 D11 D12 E12 SW1 VINH1 VINH1 VINH1 VINH1 VINH1 VINH1 VINH1 VINH1 VINH1 VIN R30 0 R29 0805 OPT P6 SNUB1 H12 J11 J12 K11 K12 L11 L12 M11 M12 0.035 VIA TESTPOINTS COUT44 OPT 2.5V VOUT1 J6 R33 OPT GND INTVCC INTVCC VINL VINL VDD33 R34 F9 G9 OPT VIN E10 GND1_SNS J7 P8 B10 R37 A5 0805 OPT E2 E1 F2 F1 COMP0 C5 D5 C10 OPT E8 R38 OPT P9 P10 D8 D10 E10 D9 VOSNS0+ R35 10K SW0 SNUB0 SYNC SHARE_CLK ISNS0aISNS0b- ALERT SCL ISNS0a+ ISNS0b+ SDA U2 TSNS0b TSNS0a GPIO0 LTM4677EY GPIO1 WP COMP0a RUN0 COMP0b RUN1 E7 SYNC H7 SHARE_CLK E5 ALERTB E6 SCL D6 SDA E4 GPIO0B F4 GPIO1B SHARE_CLK ALERTB SCL SDA GPIO0B GPIO1B K6 F5 F6 RUN0 R39 10K RUN1 VORB0+ VORB0- VDD25 J6 P11 VOSNS0+ C11 OPT VOSNS0- ASEL G4 VOUT0 COUT20 100uF 1210 COUT21 100uF 1210 COUT22 100uF 1210 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 FSWPHCFG VOUT0CFG VTRIM0CFG VOUT1CFG VTRIM1CFG G7 G8 F7 F8 A4 A6 A7 A8 A9 A10 B4 B5 B6 B7 B8 B9 C4 C6 C7 C8 C9 D4 D7 E3 F3 F10 G3 G10 G11 G12 H3 H10 J4 J10 K4 K7 K8 K9 L4 L5 L6 L7 L8 L9 M4 M6 M7 M8 M9 M10 G5 H5 G6 H6 R42 1.65K SW2 RUN1 R41 10 ON 5 2 OFF R43 (OPT) C12 10nF B R44 (OPT) R45 (OPT) R46 (OPT) RUN1 DNC DNC DNC DNC 470uF 2.5V H4 1.65K C10 E11 H11 K10 + COUT19 GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND COUT43 OPT 2.5V SGND SGND SGND SGND + B A1 A2 A3 B1 B2 B3 C1 C2 C3 D1 D2 D3 R40 6 3 E9 VOSNS0- C R36 10K SYNC 4 1 C OPTIONAL JUMPER FOR SINGLE OUTPUT CONFIGURATION R47 0 GPIO0B GPIO1B R48 0 R50 0 RUN1 RUN0 COMP0 VOUT0 VOUT1 R49 0 2010 COMP1 R51 0 2010 R53 0 2010 A A R54 R56 0 VOSNS0+ VOSNS1 R119 (OPT) 0 2010 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. PCB DES. APP ENG. JIAN L. 3 2 Fax: (408)434-0507 www.linear.com LTC Confidential-For Customer Use Only TITLE: SCHEMATIC HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN µModule REGULATOR WITH DIGITAL POWER MANAGEMENT SIZE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 4 TECHNOLOGY HZ VOSNS0- 5 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 APPROVALS B SCALE = NONE DATE: IC NO. LTM4677EY REV. 1 DEMO CIRCUIT 2143A-C Wednesday, November 25, 2015 1 SHEET 2 OF 6 5 4 3 2 1 COMP0 VOUT0 D D C13 OPT COUT23 100uF 1210 COUT24 100uF 1210 COUT25 100uF 1210 + COUT26 470uF 2.5V + COUT41 OPT 2.5V VOSNS0+ CIN13 10uF 1210 CIN14 10uF 1210 CIN15 10uF 1210 R60 0 F11 F12 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 H9 J1 J2 J3 K1 K2 K3 L1 L2 L3 M1 M2 M3 C14 OPT VOSNS1 J8 H8 J9 VORB1 COMP1b COMP1a K5 J5 TSNS1a TSNS1b H2 H1 G2 G1 M5 L10 SW1 ISNS1a+ ISNS1b+ VINH0 VINH0 VINH0 VINH0 VINH0 VINH0 VINH0 VINH0 VINH0 R59 OPT P13 ISNS1aISNS1b- A11 A12 B11 B12 C11 C12 D11 D12 E12 CIN12 10uF 1210 SNUB1 H12 J11 J12 K11 K12 L11 L12 M11 M12 VINH1 VINH1 VINH1 VINH1 VINH1 VINH1 VINH1 VINH1 VINH1 VIN R58 0 R57 0805 OPT P12 0.035 VIA TESTPOINTS VIN INTVCC INTVCC R61 F9 G9 OPT P15 VINL VINL VDD33 J7 P14 B10 C R62 SW0 A5 C SNUB0 SYNC OPT 0805 SHARE_CLK E2 E1 ISNS0aISNS0b- COMP0 SCL F2 F1 ISNS0a+ ISNS0b+ C5 D5 C15 OPT TSNS0b TSNS0a OPT P16 P17 GPIO0 LTM4677EY GPIO1 COMP0a RUN0 D8 COMP0b RUN1 D10 SYNC SHARE_CLK E5 ALERTB E6 SCL D6 SDA E4 GPIO0B F4 E10 SYNC SHARE_CLK ALERTB SCL SDA GPIO0B R121 0 K6 F5 RUN0 R64 10K F6 VORB0+ P18 VORB0- D9 VOSNS0+ SDA U3 WP E8 R63 ALERT E7 H7 VDD25 J6 VOSNS0+ C16 OPT E9 VOSNS0- 470uF 2.5V COUT27 100uF 1210 COUT29 100uF 1210 COUT30 100uF 1210 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 FSWPHCFG VOUT0CFG VTRIM0CFG VOUT1CFG VTRIM1CFG A4 A6 A7 A8 A9 A10 B4 B5 B6 B7 B8 B9 C4 C6 C7 C8 C9 D4 D7 E3 F3 F10 G3 G10 G11 G12 H3 H10 J4 J10 K4 K7 K8 K9 L4 L5 L6 L7 L8 L9 M4 M6 M7 M8 M9 M10 G4 H4 G5 H5 G6 H6 R65 2.43K R66 3.24K R67 (OPT) R68 (OPT) B R69 (OPT) R70 (OPT) DNC DNC DNC DNC + COUT28 GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND B COUT42 OPT 2.5V ASEL SGND SGND SGND SGND + A1 A2 A3 B1 B2 B3 C1 C2 C3 D1 D2 D3 C10 E11 H11 K10 VOUT0 G7 G8 F7 F8 VOSNS0- A A 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. 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 APPROVALS PCB DES. APP ENG. TECHNOLOGY HZ JIAN L. 5 4 3 2 www.linear.com LTC Confidential-For Customer Use Only TITLE: SCHEMATIC HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN µModule REGULATOR WITH DIGITAL POWER MANAGEMENT SIZE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. Fax: (408)434-0507 B SCALE = NONE DATE: IC NO. LTM4677EY REV. 1 DEMO CIRCUIT 2143A-C Friday, August 28, 2015 SHEET 3 1 OF 6 5 4 3 2 1 COMP0 VOUT0 C17 OPT D R74 0 F11 F12 COUT33 + COUT34 100uF 470uF 2.5V 1210 + D COUT40 OPT 2.5V C18 OPT J1 J2 J3 K1 K2 K3 L1 L2 L3 M1 M2 M3 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 VOUT1 H9 VOSNS1 J8 H8 J9 VORB1 COMP1b J5 K5 H2 H1 G2 G1 M5 L10 SW1 COMP1a VINH0 VINH0 VINH0 VINH0 VINH0 VINH0 VINH0 VINH0 VINH0 TSNS1a A11 A12 B11 B12 C11 C12 D11 D12 E12 CIN19 10uF 1210 TSNS1b CIN18 10uF 1210 ISNS1a+ ISNS1b+ CIN17 10uF 1210 COUT32 100uF 1210 VOSNS0+ R73 OPT P20 ISNS1aISNS1b- CIN16 10uF 1210 VINH1 VINH1 VINH1 VINH1 VINH1 VINH1 VINH1 VINH1 VINH1 VIN R72 0 R71 0805 OPT P19 SNUB1 H12 J11 J12 K11 K12 L11 L12 M11 M12 0.035 VIA TESTPOINTS COUT31 100uF 1210 VIN INTVCC INTVCC R75 F9 G9 OPT P22 VINL VINL VDD33 J7 P21 B10 R76 A5 SW0 SNUB0 SYNC 0805 OPT C E2 E1 F2 F1 COMP0 C5 D5 C19 OPT E8 R77 OPT P23 D8 D10 P24 E10 D9 VOSNS0+ SHARE_CLK ISNS0aISNS0b- ALERT SCL ISNS0a+ ISNS0b+ SDA U4 LTM4677EY TSNS0b TSNS0a GPIO0 GPIO1 WP COMP0a RUN0 COMP0b RUN1 E7 SYNC H7 SHARE_CLK E5 ALERTB SYNC E6 SCL D6 SDA E4 GPIO0B F4 C SHARE_CLK ALERTB SCL SDA GPIO0B R122 0 K6 F5 RUN0 R78 10K F6 VORB0+ P25 VORB0- VDD25 J6 VOSNS0+ C20 OPT E9 VOSNS0- VOSNS0- ASEL G4 VOUT0 COUT36 100uF 1210 COUT37 100uF 1210 VOUT0CFG VTRIM0CFG VOUT1CFG VTRIM1CFG A4 A6 A7 A8 A9 A10 B4 B5 B6 B7 B8 B9 C4 C6 C7 C8 C9 D4 D7 E3 F3 F10 G3 G10 G11 G12 H3 H10 J4 J10 K4 K7 K8 K9 L4 L5 L6 L7 L8 L9 M4 M6 M7 M8 M9 M10 G5 H5 G6 H6 3.24K 2.43K R81 OPT R82 OPT R83 OPT R84 OPT B DNC DNC DNC DNC COUT35 100uF 1210 H4 R80 C10 E11 H11 K10 470uF 2.5V GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND B + COUT38 FSWPHCFG SGND SGND SGND SGND OPT 2.5V VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 VOUT0 G7 G8 F7 F8 + COUT39 A1 A2 A3 B1 B2 B3 C1 C2 C3 D1 D2 D3 R79 A A 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. 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 APPROVALS PCB DES. APP ENG. TECHNOLOGY HZ JIAN L. 5 4 3 2 www.linear.com LTC Confidential-For Customer Use Only TITLE: SCHEMATIC HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN µModule REGULATOR WITH DIGITAL POWER MANAGEMENT SIZE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. Fax: (408)434-0507 B SCALE = NONE DATE: IC NO. LTM4677EY REV. 1 DEMO CIRCUIT 2143A-C Friday, August 28, 2015 SHEET 4 1 OF 6 5 4 3 2 1 ALL PARTS ON THIS PAGE ARE FOR DEMO ONLY, NOT NEEDED IN CUSTOMER DESIGN E17 SGND D ALERTB SDA SHARE_CLK SCL E13 E12 D SYNC E15 E14 E16 D8 E11 1 VDD33 2 GPIO1B R136 OPT GPIO1B J14 AUX3V4 SCL GND SDA 4 AUX3V4 3 2 1 R133 OPT SYNC ALERTB SDA SCL SHARE_CLK E18 GPIO0B R135 0 GPIO0B TO DC2086A D5 OPT AUXP 3V3 RUN1 FAULTB CTRL ALERTB SDA SHARE_CLK SCL RESETB AUXP UNUSED UNUSED GND GND 12V 12V 100nF R134 4.99K U9 2 3 4 RUN0 VCC A1 WP A2 SCL VSS SDA R131 0 R142 OPT C32 A0 RUN0 3V3 1 2 3 4 5 6 7 8 9 10 11 12 TO DC1613A 1 E19 E21 AUXP SDA GND SCL LGKPWR ALERTB GPIO_1 OUTEN_0 OUTEN_1 GND AUXSCL AUXSDA C D4 OPT R143 0 E25 J7 R126 OPT R144 4.99K 7 EEWP EESCL 5 EESDA R140 OPT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 J12 DEMO HEADER (F) R139 OPT VIN R128 OPT R137 OPT E22 FAULTB CTRL ALERTB SDA SHARE_CLK SCL RESETB AUXP UNUSED UNUSED GND GND 12V 12V SGND R125 10 R129 10 C C34 10nF C33 10nF J13 DEMO HEADER (M) R138 OPT 1206 24LC025-I/ST OPT RUN1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 8 AUXVCC 6 R127 R132 OPT PSM STACKING CONNECTORS: OPTIONAL CIRCUIT FOR PROGRAMMING WITHOUT VIN 3V3 Q19 DMP3130L-7 3 B HEADER 14POS 2MM R/A GOLD, Molex Connector Corp. 87760-1416 VDD33 1 VIN 2 J1, MALE, CONN J2, FEMALE, CONN RECEPT 2MM DUAL R/A 14POS, Sullins Conn. NPPN072FJFN-RC VDD33 B R130 10K 3V3 3V3 R124 200 3V3 2 R141 15.8k R85 200 ALERTB GPIO0 D2 3 3 3 GREEN 1 SI2365EDS-T1-GE3 Q2 GREEN Q3 GPIO0B 1 GPIO1 D1 2N7002K Q4 GPIO1B 1 D3 ALERTB RED 2N7002K 2 2 R86 127 A A 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. 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 APPROVALS PCB DES. APP ENG. TECHNOLOGY HZ JIAN L. 5 4 3 2 www.linear.com LTC Confidential-For Customer Use Only TITLE: SCHEMATIC HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN µModule REGULATOR WITH DIGITAL POWER MANAGEMENT SIZE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. Fax: (408)434-0507 B SCALE = NONE DATE: IC NO. LTM4677EY REV. 1 DEMO CIRCUIT 2143A-C Friday, August 28, 2015 SHEET 5 1 OF 6 5 4 3 2 1 ALL PARTS ON THIS PAGE ARE FOR DEMO ONLY, NOT NEEDED IN CUSTOMER DESIGN D D DYNAMIC LOAD CIRCUIT EXT PULSE E23 VOUT0 J11 SET DIV 5 R104 0 U8 LT1803IS5 +5V R123 1000K 4 R111 C67 20K 0.1uF C VOUT0 R102 2512 OPT BLEEDER 70Hz, 3% Duty Cycle VOUT1 R105 681K R115 20K 5 2 3 C68 1uF V+ VOUT 1 V+IN -IN 4 R106 3.3 3 JP2 PULSE 1 C69 INT 150pF R107 82.5 3 1 1 EXT Q11 R116 10K Q12 SUD50N04-8M8P-4GE3 C J10 SUD50N04-8M8P-4GE3 1 C70 1uF 0805 R118 0.01 R112 100 1% R103 2512 OPT VOUT0 2 3 4 5 V+ 3 GND 6 C66 0.22uF IOUT TST 2 3 4 5 3 OUT 2 2 R114 154k MOD 2 1 1 R117 2 LTC6992-1 2 U7 R108 0.01 R110 5K LOADS E24 R113 1.4K 1% GND 3 VIN B JP1 R109 100K BIAS ON B U6 2 5 OFF 1 6 7 8 C65 1uF SHDN GND GND VIN NC GND SENSE/ADJ OUTPUT 4 3 2 C64 4.7uF 1 +5V LT1129CS8-5 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 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 APPROVALS PCB DES. APP ENG. TECHNOLOGY HZ JIAN L. 5 4 3 www.linear.com LTC Confidential-For Customer Use Only TITLE: SCHEMATIC HIGH EFFICIENCY, POLY-PHASE, DC/DC STEP-DOWN µModule REGULATOR WITH DIGITAL POWER MANAGEMENT SIZE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. Fax: (408)434-0507 B SCALE = NONE 2 DATE: IC NO. LTM4677EY REV. 1 DEMO CIRCUIT 2143A-C Wednesday, November 25, 2015 SHEET 6 1 OF 6 A