5 4 3 2 1 VERSION TABLE * 3 GND Q2 Si2333DS E3 Q3 Si2333DS 1 VUSB 2 TP3 4 ID R1 1 ID 5 GND Q1 Si2306BDS 3 2 R2 6.04K 0603 E4 GND 40 C2 10uF 0603 8 43 VBUS E6 36 JP1 C 38 39 LTC3577EUFF-3 / -4 OVGATE 0 1 JP2 ILIM1 OVSENS CLPROG ILIM1 15 PB1 1 0 E7 ILIM0 2 ON 30 LDO1 28 LDO1_FB 23 LDO2 29 LDO2_FB 24 VIN12 SW1 33 FB1 34 SW2 31 NTCBIAS FB2 R8 100k 35 R9 R10 100k TP4 R11 EXT 0 INT ENTC DVCC C17 0.1uF 16V EN3 SW3 5 DVCC FB3 17 EN3 12 SCL JP4 R7 0 SW 2 4 6 8 10 12 14 ILED 22 PGOOD 21 EXTPWR LED_OV TP6 9 ILED E17 E18 LDO2 1.2V 150mA C9 1uF R27 806K E19 GND L1 VOUT1 TP8 R29 806K R28 20 C10 10uF 0603 R30 649K GND VOUT2 TP9 R31 20 R32 1.02M C14 10pF 50V C12 2.2uF 10V 0603 C13 10uF 0603 R33 324K GND E24 VOUT3 1.2V 800mA C15 10uF 0603 TP10 C16 10pF 50V C19 22uF 0805 R35 402K R34 20 R36 806K E25 GND E26 ZLLS400 R37 D1 D2 D3 D4 D5 OPT R40 OPT VOUT2 C21 22nF 50V 0603 LDO1 D1 THRU D10 = NICHIA NSSW100B TP11 R41 OPT R42 OPT OPTIONAL BOOST CIRCUITRY SOLDER SIDE E27 GND D10 D9 D8 D7 D6 R14 1.0M 0 0805 R20 1.0M R21 1.0M E11 R15 1K E15 SCL R16 5.1K R43 EN3 5% HD2X7 10k E28 C18 U2 0.1uF 16V 6 SCLK 1 2 3 A0 A1 A2 WP 7 SDA 5 R17 5.1K 5% Unless noted: Resistors: Ohms, 0402, 1%, 1/16W Capacitors: uF, 0402, 6.3V CONTROLLED INPUT CURRENT LIMIT ILIM0 IBUS(LIM) 1 1 100mA (1X) 1 0 1A (10X) 0 0 5 4 PGOOD EXTPWR PBSTAT LDO1 always on with VOUT>2.7V PB1(+50ms) --> LDO2(+14ms) --> VOUT1 --> VOUT2 ILIM1 24LC025 B VBOOST R39 C22 OPT 0603 ILED R38 E22 VOUT2 3.3V 500mA E23 L3 3.3uH 1072AS-3R3M E20 VOUT1 1.8V 500mA E21 L2 4.7uH 1098AS-4R7M C20 1uF 50V 1206 E16 LDO1 3.3V 150mA GND 20 C11 10pF 50V TP12 J2 OPT C 10V 0603 VOUT BAT GND ENTC R24 324K R26 402K C6 2.2uF 7 18 19 20 C8 1uF 20 R25 TP7 10M PB2 PWR_ON 8 + + + + + + + 10k Vcc + + + + + + + SW SW SW R18 20K 4 1 3 5 7 9 11 13 R13 VOUT2 PB DC590 INTERFACE J3 PWR_ON CNTL Vss R6 1.0M PWR_ON 3 R12 1.0M DVCC SDA 14 PBSTAT E10 42 SDA PWR_ON 11 16 SDA LDO1 R22 L4 10uH LPS4018-103ML D12 GND TP5 A VIN3 6 1 2 3 GND R23 1.02M VOUT D E13 VOUT1 1uF 25 SCL SCL SDA 10 45 B NTC ILED_FS EN3 E9 JP3 0 NTC ENTC VOUT1 4.7uH 1098AS-4R7M 26 BAT * 500mA DF3-3P-2DSA R19 1 ON ON/RST NTCBIAS C4 1uF VOUT 32 ON E8 E12 VOUT 2.9V - 5.5V 2A C7 4.7 0603 VINLDO2 VOUT 27 PROG 1 4.1V JP5 CHRG VINLDO2 R4 2.0k ILIM0 VBUS D11 1K VINLDO1 R3 2.1k PROG LTC3577EUFF - 4 VOUT C5 13 E5 CLPROG 41 4 VBUS BAT DD+ 4.2V DC1592A-B BAT VFLOAT E14 R5 VOUT TP2 WALL 3 ACPR D+ TP1 U1* C1 4.7uF 50V 1206 1 D- 2 MINI-B USB 1 LTC3577EUFF - 3 1 C3 10uF 6.3V 0603 J1 VUSB U1 DC1592A-A 3 37 4.35V-5.5V, Non-operating Fault Tolerance To 30V IDGATE D ASSY TYPE 2 44 E2 VOUT CHRG E1 WALL 4.35V - 5.5V 1 SUSPEND 0 500mA (5X) 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 M. Merchant CHECKED: APPROVED: ENGINEER: TITLE: A DATE: 2 SCHEMATIC LTC3577EUFF-3 / -4 Highly Integrated Portable Product PMIC M. Merchant SIZE DESIGNER: THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 3 TECHNOLOGY DRAWN: 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 LTC Confidential-For Customer Use Only DWG NO. REV DC1592A-A/B Tuesday, August 18, 2009 A SHEET 1 1 OF 1 A