DC1142A-A_15 Datasheet, PDF (1/1 Pages) Linear Technology – LTC3557EUF USB PWR MGR with Li-Ion CHARGER

4
E1
HVIN
8V - 38V
(60V TRANSIENT)
JP1
_____
SHDN
RUN SHDN
OFF _JP2
4
ON SOFT-START
E2
VBUS
4.35V - 5.5V
VBUS
J1
VBUS
D-
D+
ID
GND
1
2 ^TP1 _D-
3 ^TP2 _D+
4 ^TP3 _ID
5
MINI-B USB
C2
0.068uF
50V
0805
C6
10uF
6.3V
0603
R25
1.0
C7
10uF
6.3V
0603
E3
GND
E4
CLPROG
3
E5
PROG
E6
ILIM0
E7
ILIM1
E8
EN1
2
E9
EN2
E10
EN3
E11
MODE
JP3
ILIM0 VBUS
0
1
JP4
ILIM1
0
1
JP5
OFF
EN1 VOUT
ON
JP6 _EN2
OFF ON
JP7 _EN3
OFF ON
JP8 MODE
E12
VNTC
E13
NTC
1
R9
R10
100k
0
JP9 NTC _R11
INT EXT ⁰
*
ASSY
-A
-B
U1
LTC3557EUF
LTC3557EUF-1
BAT
4.2V
4.1V
4
R1
150k
3
U2 ^{BOOST 2}
C1
4
VIN ^LT3480EDD
SW
3
4.7uF
50V
1206
5 _RUN/SS
10 _RT
BD ¹
SYNC ⁶
R2
40.2k
FB ⁸
PG ⁷
LTC3557EUF-X
U1_*
24 _VBUS
R6
2.1k
27 _CLPROG
R7
2.0k
20 _PROG
1 _ILIM0
2 _ILIM1
9 _EN1
10 _EN2
11 _EN3
R8
100k
8 _MODE
18 _VNTC
CONTROLLED INPUT CURRENT LIMIT
ILIM1
0
0
1
ILIM0
0
1
0
IBUS(LIM)
100mA (1X)
1A (10X)
SUSPEND
1
1
500mA (5X)
3
2
1
C3
0.47uF
10V
L1
6.3uH
NR6045T6R3M
D1
DFLS240L
JP10
SYNC
PULSE-SKIP
BURST
R4 TP4
20
R3
499k
R5
JP11
HV BUCK
5V ADAPTER
C4
22uF
6.3V ^R12
0805 510
100k
C5
10uF
6.3V
0603
E14
5V ADAPTER
4.5V - 5.5V
R26
1.0
E15
4
GND
VOUT ²³
CHRG ²⁸
GATE ²¹
BAT ²²
LDO3V3 ⁴
VIN1 ⁶
VIN2 ¹⁶
SW1 ⁵
FB1 ⁷
RST2 ¹⁴
SW2 ¹⁵
FB2 ¹³
SW3 ¹⁷
FB3 ¹²
C8
10uF
6.3V
0603
D2
CHRG
R13
510
Q1
1
Si2333DS
VOUT
1
Q2
Si2333DS
E16
VOUT
2.9V - 5.5V
2A
E17
GND
E18 _____
CHRG
C9
2.2uF
6.3V
0402
L2
3.3uH
1098AS-3R3M
C10
2.2uF
6.3V
0402
TP5
L3
4.7uH
1098AS-4R7M
TP6
L4
4.7uH
1098AS-4R7M
TP7
C11
1.0uF
6.3V
0402
R24
C18
0
100uF
6.3V
OSCON B6
R21
20
C12
10pF
50V
R14
1.02M R15
324k
C13
10uF
6.3V
0603
C14
10pF
50V
R23
20
R16
232k
R17
464k
R20
100k
C15
10uF
6.3V
0603
R22
20
C16
10pF
50V
R18
806k
R19
649k
C17
10uF
6.3V
0603
E19
* BAT
3
E20
DF3-3P-2DSA
LDO3V3
3.3V
25mA
1
2
3
BAT
GND
ENTC
J2
OPT
E21
VOUT1
3.3V
600mA
E22
GND
E23 ____
RST2
E24
VOUT2
1.2V
400mA
2
E25
GND
E26
VOUT3
1.8V
400mA
E27
GND
CUSTOMER NOTICE
CONTRACT NO.
1630 McCarthy Blvd.
Milpitas, CA 95035
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
DRAWN:_{B. Shaffer}
CHECKED:
APPROVED:
ENGINEER:
B. Shaffer
DESIGNER:
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
Phone: [phone]
1
TECHNOLOGY
Fax: [phone]
LTC Confidential-For Customer Use Only
TITLE: SCHEMATIC
LTC3557EUF USB PWR MGR with Li-Ion CHARGER and
3 STEP-DOWN REGULATORS + LT3480EDD
SIZE DWG NO.
REV
A
DC1142A-A/B
B
DATE:
Tuesday, March 18, 2008
SHEET 1 OF 1
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