5 4 3 2 1 J4 E1 D VUSB 4.35V - 5.5V, Non-operating Fault Tolerance to 30V Continous. Q1 FDN-372S J1 VUSB 1 D- 2 D+ 3 ID 4 GND 5 3 D- TP1 D+ TP2 ID TP3 C1 4.7uF 1206 50V R1 1.0 5% MINI-B USB USB Mini-B E2 2 C2 22uF 0805 6.3V 20% 1 VBUS DVCC SDA Leakage current must be < 400nA TP4 GND NTCBIAS TP5 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 R2 6.2k LTC4099EPDC U1 1 3 NTCBIAS 5% 0603 E3 VBUS OVGATE OVSENS VC 18 WALL 5 14 VOUT 12 NTC IDGATE 10 LPS4018-332MLC NTC 16 SCL 17 SDA 15 DVCC DVCC C7 22uF 0805 6.3V 20% DC590 INTERFACE J2 1 3 5 7 9 11 13 B + + + + + + + + + + + + + + 2 4 6 8 10 12 14 R6 0 R18 100k R4 5.1k 5% R7 51k 5% C3 0.1 16V U2 SCLK 1 2 3 A0 A1 A2 7 WP E9 6 C4 0.01uF 25V 7 19 11 CLPROG GNDGND 21 R13 1.0 5% 9 256X8 JP1 NTC E5 R15 1.0 5% R9 3.01k R10 100k CUSTOMER NOTICE CONTRACT NO. 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. APPROVALS J3 1 2 3 BAT GND NTC DF3-3P-2DSA OPT G. Barbehenn CHECKED: 3 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 LTC Confidential-For Customer Use Only TECHNOLOGY DRAWN: TITLE: SCHEMATIC 2 LTC4099EPDC:High Efficiency I C Controlled USB Power Manager/Charger with Overvoltage Protection APPROVED: ENGINEER: G. Barbehenn SIZE DESIGNER: A THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 4 B Unless noted: Resistors: Ohms, 0402, 1%, 1/16W Capacitors: uF, 0402, 10%, 50V EXT INT R11 0 E6 5 R14 1.0 5% R12 0 Vss C5 0.1uF 16V BATSENS BAT VFLOAT = 4.1V / 4.2V 0.5A - 1.2A E7 GND C6 100uF 6.3V 1206 20% PROG 5 R8 1.02k IRQ E8 BAT PROG CLPROG E10 8 24LC025I/ST 4 A R17 1k 5% 0603 Q2 Si2333DS R16 0 8 SDA 1 3 IRQ BATSENS R5 5.1k 5% Vcc 6 Leakage current must be < 50nA C D1 INTERRUPT E11 PENDING GND RED 2 SCL SDA DVCC E12 VOUT 3.5V - 4.7V 1.5A L1 3.3uH E4 2 SQT-108-01-F-D-RA 4 ACPR SW R3 100k C D HV BUCK INTERFACE 13 OVGATE 20 SCL VOUT VC/TRACK VOUT GND ACPR GND PG WALL SYNC SHDN DVCC ILIM SDA HVOK/INIT SCL HVIN DATE: 2 DWG NO. REV DC1396A Wednesday, October 15, 2008 A SHEET 1 1 OF 1 A