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Linear Technology Electronic Components Datasheet

LTC3586 Datasheet

High Effi ciency USB Power Manager

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LTC3586/LTC3586-1
FEATURES
High Efficiency USB Power
Manager with Boost,
Buck-Boost and Dual Bucks
DESCRIPTION
Power Manager
n High Efficiency Switching PowerPathTM Controller
with Bat-TrackTM Adaptive Output Control and
“Instant-On” Operation
n Programmable USB or Wall Current Limit
(100mA/500mA/1A)
n Full Featured Li-Ion/Polymer Battery Charger with
Float Voltage of 4.1V (LTC3586-1) or 4.2V (LTC3586)
with 1.5A Maximum Charge Current
n Internal 180mΩ Ideal Diode Plus External Ideal Diode
Controller Powers Load in Battery Mode
n <30μA No-Load Quiescent Current when Powered
from BAT
n Dual High Efficiency Buck DC/DCs (400mA IOUT)
n High Efficiency Buck-Boost DC/DC (1A IOUT)
n High Efficiency Boost DC/DC (800mA IOUT)
n Compact (4mm × 6mm × 0.75mm) 38-Pin QFN
Package
APPLICATIONS
The LTC®3586/LTC3586-1 are highly integrated power
management and battery charger ICs for Li-Ion/Polymer
battery applications. They include a high efficiency cur-
rent limited switching PowerPath manager with automatic
load prioritization, battery charger, ideal diode, and four
synchronous switching regulators (two bucks, one buck-
boost and one boost). Designed specifically for USB
applications, the LTC3586/LTC3586-1’s switching power
manager automatically limits input current to a maximum
of either 100mA or 500mA for USB applications or 1A for
adapter-powered applications.
Unlike linear chargers, the LTC3586/LTC3586-1 switching
architecture transmits nearly all of the power available from
the USB port to the load with minimal loss and heat which
eases thermal constraints in small places. The two buck
regulators can provide up to 400mA each, the buck-boost
can deliver 1A, and the boost delivers at least 800mA.
The LTC3586/LTC3586-1 are available in a low profile
(0.75mm) 38-pin 4mm × 6mm QFN package.
n Digital Still Cameras
n HDD-Based MP3 Players, PDAs, GPS, PMPs
wwwn.DaOtatShheeretU4US.Bco-mBased Handheld Products
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
PowerPath and Bat-Track are trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Protected by U.S. Patents including 6522118, 6404251.
TYPICAL APPLICATION
High Efficiency PowerPath Manager, Dual Buck, Buck-Boost and Boost
USB/WALL
4.5V TO 5.5V
CHARGE
4
EN
MODE
2
ILIM
USB COMPLIANT
STEP-DOWN
REGULATOR
CURRENT
CONTROL
CC/CV
BATTERY
CHARGER
0V
LTC3586/LTC3586-1
ALWAYS ON LDO
DUAL HIGH EFFICIENCY
BUCKS
HIGH EFFICIENCY
BUCK-BOOST
1
2
3
HIGH EFFICIENCY
BOOST
4
TO OTHER
LOADS
OPTIONAL
+
T Li-Ion
3.3V/20mA
0.8V TO 3.6V/400mA
0.8V TO 3.6V/400mA
RTC/LOW
POWER LOGIC
MEMORY/
CORE μP
2.5V to 3.3V/1A I/O
SYSTEM
FAULT
5V/800mA
AUDIO/
MOTOR
3586 TA01
Battery Charge Current vs
Battery Voltage (LTC3586)
700
BATTERY CHARGE CURRENT
600
EXTRA CURRENT
500 FOR FASTER CHARGING
500mA USB CURRENT LIMIT
400
300
200
100
VBUS = 5V
5x MODE
BATTERY CHARGER PROGRAMMED FOR 1A
0
2.8 3 3.2 3.4 3.6 3.8 4 4.2
BATTERY VOLTAGE (V)
3586 TA01b
3586fa
1


Linear Technology Electronic Components Datasheet

LTC3586 Datasheet

High Effi ciency USB Power Manager

No Preview Available !

LTC3586/LTC3586-1
ABSOLUTE MAXIMUM RATINGS
(Notes 1, 5)
VBUS (Transient) t < 1ms,
Duty Cycle < 1% ..........................................– 0.3V to 7V
VIN1, VIN2, VIN3, VIN4, VBUS (Static),
BAT, NTC, CHRG, FAULT, ILIM0, ILIM1,
EN3, EN4, MODE, FB4, VOUT4 .....................– 0.3V to 6V
FB1...............................................– 0.3V to (VIN1 + 0.3V)
FB2...............................................– 0.3V to (VIN2 + 0.3V)
FB3, VC3.......................................– 0.3V to (VIN3 + 0.3V)
EN1, EN2............– 0.3V to Max (VBUS, VOUT, BAT) + 0.3V
ICLPROG ....................................................................3mA
IFAULT, ICHRG...........................................................50mA
IPROG........................................................................2mA
ILDO3V3 ...................................................................30mA
ISW1, ISW2 ............................................................600mA
ISW, IBAT, IVOUT............................................................2A
ISWAB3, ISWCD3, ISW4, IVOUT3 ...................................2.5A
Operating Temperature Range (Note 2)....–40°C to 85°C
Junction Temperature (Note 3) ............................. 125°C
Storage Temperature Range...................–65°C to 125°C
PIN CONFIGURATION
TOP VIEW
ILIM0 1
ILIM1 2
LDO3V3 3
CLPROG 4
NTC 5
VOUT4 6
VOUT4 7
SW4 8
MODE 9
FB4 10
FB3 11
VC3 12
38 37 36 35 34 33 32
39
13 14 15 16 17 18 19
31 GATE
30 CHRG
29 PROG
28 FB1
27 VIN1
26 SW1
25 SW2
24 VIN2
23 FB2
22 VIN4
21 EN1
20 EN2
UFE PACKAGE
38-LEAD (4mm s 6mm) PLASTIC QFN
TJMAX = 125°C, θJA = 34°C/W
EXPOSED PAD (PIN 39) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LTC3586EUFE#PBF
LTC3586EUFE#TRPBF 3586
38-Lead (4mm × 6mm) Plastic QFN
LTC3586EUFE-1#PBF
www.DataSheet4U.com
LTC3586EUFE-1#TRPBF 35861
38-Lead (4mm × 6mm) Plastic QFN
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
TEMPERATURE RANGE
– 40°C to 85°C
– 40°C to 85°C
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VBUS = 5V, BAT = 3.8V, VIN1 = VIN2 = VIN3 = VIN4 = VOUT3 = 3.8V,
VOUT4 = 5V, RPROG = 1k, RCLPROG = 3.01k, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
PowerPath Switching Regulator
VBUS
IBUSLIM
IVBUSQ
Input Supply Voltage
Total Input Current
VBUS Quiescent Current
1x Mode, VOUT = BAT
5x Mode, VOUT = BAT
10x Mode, VOUT = BAT
Suspend Mode, VOUT = BAT
1x Mode, IVOUT = 0mA
5x Mode, IVOUT = 0mA
10x Mode, IVOUT = 0mA
Suspend Mode, IVOUT = 0mA
4.35
l 87
l 436
l 800
l 0.31
95
460
860
0.38
7
15
15
0.044
5.5
100
500
1000
0.50
V
mA
mA
mA
mA
mA
mA
mA
mA
3586fa
2


Part Number LTC3586
Description High Effi ciency USB Power Manager
Maker Linear Technology
Total Page 30 Pages
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