LTC3586-2 Datasheet, PDF (36/36 Pages) –

LTC3586-2/LTC3586-3
TYPICAL APPLICATION
Watchdog Microcontroller Operation
USB/WALL
4.5V TO 5.5V
AUDIO/
MOTOR DRIVE
C1
22µF
100k
T
2k
35, 36
V_BUS
5
NTC
29 _PROG
4
CLPROG
0.1µF 2.94k
SW ³⁷
V_OUT ³⁴
GATE ³¹
BAT ³²
GND ³⁹
L1
3.3µH
MP1
+
Li-Ion
CHRG ³⁰
V_OUT3
16, 17
10pF
LTC3586-2
LTC3586-3
330pF
3.3V, 20mA
3 _LDO3V3
V_C3
12
11
15k
324k
1µF
FB3
19
10k
SWCD3
105k
L2
38
FAULT
SWAB3 ¹³
2.2µH
HOUSEKEEPING
2
MICROCONTROLLER
1, 2 _ILIM
9
MODE
V_IN3 ^{14, 15}
SW2 ^{25 L3 4.7µH}
4
18, 20, 21, 33
EN
FB2 ²³
1.02M
806k
5V
800mA
22µF
10pF
6, 7
88.7k
10
16.9k
V_OUT4
FB4
V_IN2 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
V_IN1
V_IN4
27
22
SW4 ⁸
358623 TA02
L5
2.2µH
10µF
RELATED PARTS
PART NUMBER
LTC3555
LTC3556
LTC3566
LTC3586/
LTC3586-1
DESCRIPTION
I²C Controlled High Efficiency USB
Power Manager Plus Triple Step-Down
DC/DC
High Efficiency USB Power Manager Plus
Dual Buck Plus Buck-Boost DC/DC
Switching USB Power Manager with
Li-Ion/Polymer Charger, 1A Buck-Boost
Converter Plus LDO
Switching USB Power Manager with
Li-Ion/Polymer Charger, 1A Buck-Boost +
Dual Sync Buck Converter + Boost + LDO
COMMENTS
Maximizes Available Power from USB Port, Bat-Track, “Instant On” Operation, 1.5A Max
Charge Current, 3.3V/25mA Always-On LDO, Three Synchronous Buck Regulators, One 1A
Buck-Boost Regulator, 4mm × 5mm QFN28 Package
Maximizes Available Power from USB Port, Bat-Track, “Instant On” Operation, 1.5A Max
Charge Current, 3.3V/25mA Always-On LDO, Two 400mA Synchronous Buck Regulators,
One 1A Buck-Boost Regulator, 4mm × 5mm QFN28 Package
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%, 4mm × 4mm QFN24 Package
Complete Multifunction PMIC: Switching Power Manager, 1A Buck-Boost + 2 Bucks +
Boost + LDO, Synchronous Buck/Buck-Boost Converter Efficiency: >95%; Charge Current
1.5A; LTC3586-1 version has 4.1V V_FLOAT; 4mm × 6mm QFN-38 Package
36 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^● FAX: [phone] ^● www.linear.com
358623f
LT 0312 • PRINTED IN USA
 LINEAR TECHNOLOGY CORPORATION 2012