1 2 3 4 5 REVISION HISTORY SENSE+ SENSE- E18 J1 1 3 5 VIN EXTVDD INTVCC JP1 C1 0.1uF 200V 1206 VGPIO R8 100k R9 3.3k 2 R7 3.3k 2 R6 100k J3 VOUT VOUT E3 5A, ADJ. A VDD INTVCC GPIO1 GPIO2 GPIO3 SDAO SDAI SCL GND E4 SENSE+ SENSEADR1 ADIN ADRO GND CLKOUT CLKIN EP 16 15 14 13 12 11 10 9 R2 147k 6 4 2 Y1 1 17 D5 RED 1 D4 AMBER 1 D3 GRN 21 INTVCC R5 3.3k 2 2 D2 GRN B 05-28-14 U1 LTC2946IDE 1 2 3 4 5 6 7 8 C2 0.1uF R4 100k DATE SAL H. J4 INTVCC R3 3.3k APPROVED R1 51 2 4 6 HD2X3-079 E2 E5 EXTVDD 4V - 100V INTVCC E6 2.7V - 5.9V DESCRIPTION PRODUCTION C3 36pF 2 ADR0 5 3 1 6 4 2 HIGH FLOAT LOW JP2 HD2X3-079 C4 36pF ADR1 5 3 1 E7 ADIN E8 R10 3k HIGH FLOAT LOW GND JP3 HD2X3-079 B 1 GND 2 J2 2 2010 D1 SMAT70A E1 0V - 75V REV __ RSNS 0.02 VIN 1 VIN A ECO E19 1 Q1 2N7002 3 JUMPER POSITIONS GPIO1 (ACC) GPIO2 (ALERT) GPIO3 E10 E11 VPU E12 VPU 3 E16 R12 OPT E15 NOTES: UNLESS OTHERWISE SPECIFIED E17 1. ALL RESISTORS ARE IN OHMS, 0603. ALL CAPACITORS ARE IN MICROFARADS, 0603. 2. INSTALL SHUNTS AS SHOWN. R17 5.1k 6 5 7 3 2 1 U2 24LC025-I /ST 4 SCL SDA WP A2 A1 A0 8 GND R16 5.1k HD2X7-079-MOLEX WP EEGND C5 0.1uF REMOVE R14 TO SEPERATE SDAI AND SDAO 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 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. 3 TECHNOLOGY KIM T. SAL H. N/A SCALE = NONE 4 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 NOTE: EEPROM FOR BOARD IDENTIFICATION 2 C * DEFAULT SCL R15 5.1k ADDRESS CE D0 D2 D4 D6 D8 DA DC DE* VPU DC590 I2C INTERFACE J5 1 ADR1 LOW HIGH HIGH FLOAT LOW HIGH FLOAT FLOAT LOW SDAO 13 8 GND 3 GND GND 1 V+ 2 5V 6 CS 4 SCK/SCL 7 MOSI/SDA 5 MISO 10 EEVCC 9 EESDA 11 EESCL 12 EEGND 14 AUX R14 0 VCC TO DC590B E14 SDAI D6 BAT54C 2 C R11 OPT VGPIO 1 GND E13 ARRAY VPU 2.5V - 5.5V EEPROM GND D ADRO HIGH FLOAT HIGH FLOAT FLOAT LOW HIGH LOW LOW E9 DATE: WIDE RANGE I2C POWER MONITOR WITH ENERGY AND COULOMB METER IC NO. LTC2946IDE DEMO CIRCUIT 2156A 05/28/2014, 05:25 PM 2 SHEET 5 REV. 1 OF 1 D