5 4 3 2 1 REVISION HISTORY ECO D DESCRIPTION DATE APPROVED HVIN D 6V - 38V E1 + GND ON C9 22uF 50V E2 2 LTC4090EDJC C7 1000pF 50V 3 E3 D1 B360A 22 HVEN HVOUT 18 HVPR 7 C4 0.1uF R2 1 Ohm R3 D+ 3 ID 4 16 SUSP R4 71.5K 1% USB Current 1 2 3 R5 10.0K 1% 4 USB ON/OFF 1 OFF 2 ON 3 JP3 SUSP PROG CHRG E9 1 NTC EXT R10 10.0K 1% R14 OPT E19 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. CONTRACT NO. APPROVALS 3 TECHNOLOGY DRAWN: TITLE: CHECKED: APPROVED: JP4 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 LTC Confidential-For Customer Use Only LTC4090EDJC USB Power Manager with 2A High Voltage Buck Regulator ENGINEER: SIZE DESIGNER: DWG NO. REV 2 DEMO CIRCUIT 1210A THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 4 INT 3 R13 1K 1% B NTC E11 HVOUT PG 5 J2 DF3A-3P-2DSA GND 2 E18 E15 A E7 3 R12 40.2K 1% E12 LI-Ion+ 2 R11 59K 1% E10 E14 GND R9 1 Ohm SYNC E13 GND C10 10pF C 1 GRN C11 270pF CLPROG GND E6 C8 4.7uF 6.3V D4 680 VOUT E5 R8 23 GND NTC 5 SYNC PG RT VC HVPR E4 C6 4.7uF 6.3V Q2 Si2333DS 3 E8 680 E17 VNTC 6 9 PROG JP2 HPWR R7 Si2333DS 1.00K 1% 2 100mA Q1 HVOUT E16 D3 RED BAT 11 CHRG 8 14 CLPROG 1 C3 22uF 6.3V 1206 R6 GATE 10 17 TIMER 2.10K 1% GND 5 OUT 13 HVOUT L1 6.5uH BOOST SW 20 12 IN C5 4.7uF 6.3V VBUS 1 D- 2 500mA 21 HVIN SUMIDA CDR6D28MN-6R5 C2 0.47uF 16V 19 15 HPWR USB 4.35V-5.5V J1 R1 1M 1% C1 1uF 50V 1206 JP1 C U1 HVEN 1 OFF B REV DATE: 2 SHEET 1 1 OF 1 A