DC1138A-B_15 Datasheet, PDF (1/1 Pages) Linear Technology – LTC3557EUF USB PWR MGR with Li-Ion CHARGER

E1
HVIN
8V - 36V
4
_____
SHDN
JP1
R1
150k
RUN SHDN
4
E2
VBUS
4.35V - 5.5V
J1
VBUS ¹
D- ²
D+ ³
ID ⁴
GND ⁵
USB Mini-B
VBUS
C2
0.068uF
50V
0805
TP1
D-
TP2
D+
TP3
ID
OFF
JP2
SOFT-START
ON
C6
10uF
0603
6.3V
R25
1.0
5%
E3
GND
E4
CLPROG
3
E5
PROG
E6
ILIM0
JP3
ILIM0 ^VBUS
E7
ILIM1
0
1
JP4
ILIM1
E8
EN1
0
1
JP5
EN1 ^VOUT
E9
OFF ON
2
EN2
JP6 EN2
E10
EN3
OFF ON
JP7 EN3
E11
MODE
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
D4
BZT52C16T
R12
806k
1%
C1
1uF
50V
R2
20k
1%
3
U2
LT3505EDD
3 _VIN
BOOST ¹
4 _SHDN
6 _RT
SW ²
GND ⁵
FB ⁷
C3
0.1uF
10V
D3
CMDSH-4E
L1
6.8uH
VLCF5020T-6R8
D1
MBRM140
C7
10uF
0603
6.3V
LTC3557EUF-X
U1_*
24 _VBUS
27 _CLPROG
R6
2.1k
20 _PROG
R7
2.0k
1 _ILIM0
2 _ILIM1
9 _EN1
10 _EN2
11 _EN3
R8
100k
8 _MODE
18 _VNTC
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
2
1
JP10
HV BUCK
5V ADAPTER
R4
20
TP4
R3
49.9k
C19
22pF
25V
R5
10.2k
C4
10uF
6.3V
0603
C8
10uF
0603
6.3V
D2
CHRG
R13
510
Q1
1
Si2333DS
VOUT
1
Q2
Si2333DS
E14
5V ADAPTER
C5
10uF
0603
6.3V
4.5V - 5.5V
R26
1.0
4
5% _E15
GND
E16
VOUT
2.9V - 5.5V
1.2A
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
E19
* ^BAT
3
C11
1.0uF
6.3V
0402
R24
C18
0
100uF
6.3V
OSCON B6
E20
OPT
J2
LDO3V3
3.3V
25mA
DF3-3P-2DSA
1
2
3
BAT
GND
ENTC
E21
C12
10pF
R21
20
R14
1.02M R15
324k
C13
10uF
0603
6.3V
VOUT1
3.3V
600mA
E22
GND
E23 ^____
RST2
R20
C14
10pF
R23
20
R16
232k
R17
464k
C15
10uF
0603
6.3V
100k
E24
VOUT2
1.2V
400mA
2
E25
GND
C16
10pF
R22
20
R18
806k ^R19
649k
C17
10uF
0603
6.3V
E26
VOUT3
1.8V
400mA
E27
GND
CONTROLLED INPUT CURRENT LIMIT
ILIM1
0
0
1
1
ILIM0
0
1
0
1
IBUS(LIM)
100mA (1X)
1A (10X)
SUSPEND
500mA (5X)
3
CUSTOMER NOTICE
CONTRACT NO.
1630 McCarthy Blvd.
Milpitas, CA 95035
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A _APPROVALS
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; _DRAWN:
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
B. Shaffer
Phone: [phone]
1
TECHNOLOGY
Fax: [phone]
LTC Confidential-For Customer Use Only
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
CHECKED:
TITLE: SCHEMATIC
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
APPROVED:
LTC3557EUF USB PWR MGR with Li-Ion CHARGER and
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.
ENGINEER:
B. Shaffer _SIZE
DESIGNER:
A
DATE:
3 STEP-DOWN REGULATORS + LT3505EDD
DWG NO.
REV
DC1138A-A/B
B
Wednesday, March 12, 2008
SHEET 1 OF 1
2
1