DC1138A-A_15 LINER | Alldatasheet
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Technical content
1.8V EN2 ILIM0 600mA ILIM1 EN3 1.2V NTC 400mA ON 400mA MODE ON EXT BURST OFF INT OFF ____ PULSE-SKIP OPT OFF 25mA ON 3.3V 3.3V EN1 4.1V LTC3557EUF 4.2V LTC3557EUF-1 ASSY U1 BAT
3 STEP-DOWN REGULATORS + LT3505EDD
IBUS(LIM) ILIM0 ILIM1 500mA (5X)1 CONTROLLED INPUT CURRENT LIMIT 1A (10X) SUSPEND 100mA (1X) BDC1138A-A/B Wednesday, March 12, 2008 11 B. Shaffer B. Shaffer A SCHEMATIC LTC3557EUF USB PWR MGR with Li-Ion CHARGER and SIZE DATE: DWG NO. REV SHEET OF TITLE: CONTRACT NO. APPROVALS DRAWN: CHECKED: APPROVED: ENGINEER: DESIGNER: TECHNOLOGY Fax: (408)434-0507 Milpitas, CA 95035 Phone: (408)432-1900 1630 McCarthy Blvd. LTC Confidential-For Customer Use Only 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. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. VOUT VOUT VBUS VBUS MBRM140 E15 GND PROG JP9 0.068uF 50V 0805 E16 VOUT 2.9V - 5.5V 1.2A 10uF 0603 6.3V E10 EN3 E18 CHRG R10 R19 649k LTC3557EUF-X GND ILIM0 ILIM1 WALL LDO3V3 SW1 VIN1 FB1 MODE EN1 EN2 EN3 FB3 FB2 RST2 SW2 VIN2 SW3 VNTC NTC PROG GATE BAT VOUT VBUS ACPR VC CLPROG CHRG C11 1.0uF 6.3V 0402 C17 10uF 0603 6.3V USB Mini-B VBUS ID GND JP4 R17 464k 4.7uH 1098AS-4R7M E12 VNTC JP2 0.1uF 10V E19 BAT E25 GND R20 100k Si2333DS1 3 2 ILIM1 R23 TP1 10uF 0603 6.3V E26 VOUT3 E11 MODE E20 LDO3V3 JP1 2.0k 4.35V - 5.5V VBUS C14 10pF R12 806k JP5 2.2uF 6.3V 0402 TP7 8V - 36V HVIN 3.3uH 1098AS-3R3M R18 806k R25 1.0 10uF 0603 6.3V Si2333DS E27 GND R21 LT3505EDD BOOST SW VIN SHDN GND RT FB VC GND E4CLPROG 1uF 50V CHRG EN2 10uF 0603 6.3V JP6 6.8uH VLCF5020T-6R8 49.9k E24 VOUT2 TP4 GND 20k 100k E17 GND C16 10pF CMDSH-4E E21 VOUT1 150k TP6 C10 2.2uF 6.3V 0402 TP2 100k E13 NTC ILIM0 R26 1.0 JP10 BZT52C16T TP5 R16 232k 10.2k E23 RST2E8 EN1 JP7 10uF 0603 6.3V 2.1k 4.7uH 1098AS-4R7M R22 R11 C13 10uF 0603 6.3V C19 22pF 25V R24 TP3 ID E14 5V ADAPTER 4.5V - 5.5V +C18 100uF 6.3V OSCON B6 R13 510 E22 GND DF3-3P-2DSA BAT GND ENTC R14 1.02M JP3 JP8 C12 10pF R15 324k C15 10uF 0603 6.3V