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LTC3586-1_15 Datasheet, PDF (36/36 Pages) Linear Technology – High Efficiency USB Power Manager with Boost, Buck-Boost and Dual Bucks
LTC3586/LTC3586-1
typical application
Watchdog Microcontroller Operation
USB/WALL
4.5V TO 5.5V
C1
22µF
100k
T
2k
35, 36
VBUS
0.1µF
5
NTC
29
PROG
4 CLPROG
2.94k
SW 37
VOUT 34
GATE 31
BAT 32
GND 39
L1
3.3µH
MP1
+
Li-Ion
CHRG 30
VOUT3
16, 17
10pF
LTC3586
LTC3586-1
330pF
3.3V, 20mA
1µF
3
LDO3V3
10k
12
VC3
FB3
11
SWCD3 19
15k
L2
324k
105k
38
FAULT
SWAB3 13
2.2µH
PUSHBUTTON
2
MICROCONTROLLER
1, 2 ILIM
9
MODE
VIN3 14, 15
SW2 25 L3 4.7µH
4
18, 20, 21, 33 EN
FB2 23
1.02M
806k
5V
AUDIO/
800mA
MOTOR DRIVE
22µF
10pF
6, 7
88.7k
10
16.9k
VOUT4
FB4
VIN2 24
SW1 26
FB1 28
L4 4.7µH
806k
806k
C2
22µF
RED
510Ω
121k
33pF
22µF
2.2µF
10pF
10µF
1µF
10pF
10µF
1µF
TO OTHER
LOADS
3.3V
1A
SYSTEM RAIL/
I/O
1.8V
400mA
I/O/MEMORY
MICROPROCESSOR
1.6V
400mA
CORE
C1, C2: TDK C2012X5R0J226M
L1: COILCRAFT LPS4018-332LM
L2, L5: TOKO 1098AS-2R2M
L3, L4: TOKO 1098AS-4R7M
MP1: SILICONIX Si2333
VIN1
VIN4
27
22
SW4 8
3586 TA02
L5
2.2µH
10µF
related parts
PART NUMBER
LTC3555
LTC3556
LTC3566
DESCRIPTION
I2C Controlled High Efficiency USB
Power Manager Plus Triple Step-Down
DC/DC
COMMENTS
Maximizes Available Power from USB Port, Bat-Track, “Instant On” Operation, 1.5A Max
Charge Current, 180mΩ Ideal Diode with <50mΩ Option, 3.3V/25mA Always-On LDO,
Three Synchronous Buck Regulators, One 1A Buck-Boost Regulator, 4mm × 5mm QFN28
Package
High Efficiency USB Power Manager Plus
Dual Buck Plus Buck-Boost DC/DC
Maximizes Available Power from USB Port, Bat-Track, “Instant On” Operation, 1.5A Max
Charge Current, 180mΩ Ideal Diode with <50mΩ Option, 3.3V/25mA Always-On LDO, Two
400mA Synchronous Buck Regulators, One 1A Buck-Boost Regulator, 4mm × 5mm QFN28
Package
Switching USB Power Manager with
Li-Ion/Polymer Charger, 1A Buck-Boost
Converter Plus LDO
Multifunction PMIC: Switchmode Power Manager and 1A Buck-Boost Regulator + LDO,
Charge Current Programmable Up to 1.5A from Wall Adapter Input, Thermal Regulation
Synchronous Buck-Boost Converters Efficiency: >95%, ADJ Output: Down to 0.8V at 1A,
Bat-Track Adaptive Output Control, 180mΩ Ideal Diode, 4mm × 4mm QFN24 Package
36 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
3586fb
LT 0309 REV B • PRINTED IN USA
 LINEAR TECHNOLOGY CORPORATION 2008