IC POWER MANAGER USB 38-QFN

LTC3586EUFE-1#TRPBF

Manufacturer Part NumberLTC3586EUFE-1#TRPBF
DescriptionIC POWER MANAGER USB 38-QFN
ManufacturerLinear Technology
LTC3586EUFE-1#TRPBF datasheet
 


Specifications of LTC3586EUFE-1#TRPBF

ApplicationsHandheld/Mobile DevicesVoltage - Supply4.35 V ~ 5.5 V
Operating Temperature-40°C ~ 85°CMounting TypeSurface Mount
Package / Case38-QFNLead Free Status / RoHS StatusLead free / RoHS Compliant
Current - Supply-  
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FeaTures
Power Manager
High Efficiency Switching PowerPath
n
with Bat-Track
Adaptive Output Control and
TM
“Instant-On” Operation
Programmable USB or Wall Current Limit
n
(100mA/500mA/1A)
Full Featured Li-Ion/Polymer Battery Charger with
n
Float Voltage of 4.1V (LTC3586-1) or 4.2V (LTC3586)
with 1.5A Maximum Charge Current
Internal 180mΩ Ideal Diode Plus External Ideal Diode
n
Controller Powers Load in Battery Mode
<30µA No-Load Quiescent Current when Powered
n
from BAT
Dual High Efficiency Buck DC/DCs (400mA I
n
High Efficiency Buck-Boost DC/DC (1A I
n
High Efficiency Boost DC/DC (800mA I
n
Compact (4mm × 6mm × 0.75mm) 38-Pin QFN
n
Package
applicaTions
Digital Still Cameras
n
HDD-Based MP3 Players, PDAs, GPS, PMPs
n
Other USB-Based Handheld Products
n
Typical applicaTion
High Efficiency PowerPath Manager, Dual Buck, Buck-Boost and Boost
USB/WALL
USB COMPLIANT
4.5V TO 5.5V
STEP-DOWN
REGULATOR
CC/CV
CURRENT
BATTERY
CONTROL
CHARGER
CHARGE
LTC3586/LTC3586-1
ALWAYS ON LDO
4
DUAL HIGH EFFICIENCY
EN
BUCKS
HIGH EFFICIENCY
MODE
BUCK-BOOST
2
I
LIM
HIGH EFFICIENCY
BOOST
High Efficiency USB Power
Manager with Boost,
Buck-Boost and Dual Bucks
DescripTion
The LTC
®
3586/LTC3586-1 are highly integrated power
Controller
management and battery charger ICs for Li-Ion/Polymer
TM
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
)
OUT
the USB port to the load with minimal loss and heat which
)
OUT
eases thermal constraints in small places. The two buck
)
OUT
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.
, 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.
TO OTHER
LOADS
OPTIONAL
0V
+
Li-Ion
T
3.3V/20mA
RTC/LOW
POWER LOGIC
0.8V TO 3.6V/400mA
1
MEMORY/
0.8V TO 3.6V/400mA
CORE µP
2
3
2.5V to 3.3V/1A
I/O
SYSTEM
5V/800mA
AUDIO/
4
MOTOR
FAULT
3586 TA01
LTC3586/LTC3586-1
Battery Charge Current vs
Battery Voltage (LTC3586)
700
BATTERY CHARGE CURRENT
600
EXTRA CURRENT
FOR FASTER CHARGING
500
500mA USB CURRENT LIMIT
400
300
200
V
= 5V
BUS
100
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
3586fb


LTC3586EUFE-1#TRPBF Summary of contents

  • Page 1

    ... The LTC3586/LTC3586-1 are available in a low profile (0.75mm) 38-pin 4mm × 6mm QFN package. , 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. ...

  • Page 2

    ... TAPE AND REEL LTC3586EUFE#PBF LTC3586EUFE#TRPBF LTC3586EUFE-1#PBF LTC3586EUFE-1#TRPBF 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/ ...

  • Page 3

    5V 1k 3.01k, unless otherwise noted. OUT4 PROG CLPROG SYMBOL PARAMETER h (Note 4) Ratio of Measured V Current to CLPROG BUS CLPROG Program Current ...

  • Page 4

    LTC3586/LTC3586-1 elecTrical characTerisTics temperature range, otherwise specifications are 5V 1k 3.01k, unless otherwise noted. OUT4 PROG CLPROG SYMBOL PARAMETER R Battery Charger Power FET ON_CHG On-Resistance (Between V T Junction Temperature in ...

  • Page 5

    ... NMOS Switch Current Limit LIMF4 V Output Voltage Adjust Range OUT4 V Overvoltage Shutdown OV4 ∆V Overvoltage Shutdown Hysteresis OV4 Burst Mode is a registered trademark of Linear Technology Corporation. LTC3586/LTC3586-1 The denotes the specifications which apply over the full operating l = 25° 5V, BAT = 3.8V BUS IN1 ...

  • Page 6

    LTC3586/LTC3586-1 elecTrical characTerisTics temperature range, otherwise specifications are 5V 1k 3.01k, unless otherwise noted. OUT4 PROG CLPROG SYMBOL PARAMETER R PMOS R DS(ON)P4 DS(ON) R NMOS R DS(ON)N4 DS(ON) I PMOS Switch ...

  • Page 7

    Typical perForMance characTerisTics USB Limited Battery Charge Current vs Battery Voltage 700 LTC3586 600 500 BUS PROG CLPROG 400 300 LTC3586-1 200 100 5x USB SETTING, BATTERY CHARGER SET FOR 1A ...

  • Page 8

    LTC3586/LTC3586-1 Typical perForMance characTerisTics Battery Charge Current vs Temperature 600 500 400 THERMAL REGULATION 300 200 100 PROG 10x MODE 0 –40 – 100 TEMPERATURE (°C) 3586 G13 Oscillator Frequency vs Temperature ...

  • Page 9

    Typical perForMance characTerisTics Switching Regulators 1, 2 Pulse- Skip Mode Quiescent Currents 325 V = 3.8V IN1,2 300 V = 2.5V OUT1, 2 (CONSTANT FREQUENCY) 275 250 225 V = 1.25V OUT1,2 (PULSE SKIPPING) 200 – 40 – ...

  • Page 10

    LTC3586/LTC3586-1 Typical perForMance characTerisTics Buck-Boost Regulator Burst Mode Operation Quiescent Current 14.0 13 4.5V IN3 13 IN1 V = 3.6V IN3 12.5 12.0 11.5 11.0 85 105 –55 –35 – TEMPERATURE ...

  • Page 11

    FuncTions (Pins 1, 2): Logic Inputs. I LIM0 LIM1 control the current limit of the PowerPath switching regulator. See Table 1. Table 1. USB Current Limit Settings ( USB SETTING LIM1 LIM0 0 ...

  • Page 12

    LTC3586/LTC3586-1 pin FuncTions EN2 (Pin 20): Digital Input. This input enables the buck switching regulator 2. EN1 (Pin 21): Digital Input. This input enables the buck switching regulator 1. V (Pin 22): Power Input for Switching Regulator 4 IN4 (Boost). ...

  • Page 13

    DiagraM 35 BUS CLPROG 4 BATTERY NTC 5 TEMPERATURE MONITOR CHRG 30 CHARGE STATUS FAULT 38 FAULT LOGIC EN1 21 EN2 20 EN3 18 EN4 33 MODE LIM0 I 2 LIM1 V 22 IN4 ...

  • Page 14

    LTC3586/LTC3586-1 operaTion Introduction The LTC3586/LTC3586-1 are highly integrated power management ICs which include a high efficiency switch mode PowerPath controller, a battery charger, an ideal diode, an always-on LDO, two 400mA buck switching regulators buck-boost switching regulator, and ...

  • Page 15

    The current at CLPROG is a fraction (h V current. When a programming resistor and an av- BUS eraging capacitor are connected from CLPROG to GND, the voltage on CLPROG represents the average input current of the PowerPath switching ...

  • Page 16

    LTC3586/LTC3586-1 operaTion Suspend LDO If the LTC3586/LTC3586-1 are configured for USB suspend mode, the switching regulator is disabled and the suspend LDO provides power to the V pin (presuming there is OUT power available This LDO will ...

  • Page 17

    Once the battery voltage is above 2.85V, the battery charger begins charging in full power constant-current mode. The current delivered to the battery will try to reach 1022V Depending on available input power and external PROG load ...

  • Page 18

    LTC3586/LTC3586-1 operaTion To make the CHRG pin easily recognized by both humans and microprocessors, the pin is either LOW for charging, HIGH for not charging switched at high frequency (35kHz) to indicate the two possible faults, unresponsive ...

  • Page 19

    Thermal Regulation To optimize charging time, an internal thermal feedback loop may automatically decrease the programmed charge current. This will occur if the die temperature rises to approximately 110°C. Thermal regulation protects the LTC3586/LTC3586-1 from excessive temperature due to ...

  • Page 20

    LTC3586/LTC3586-1 operaTion BAT < 2.85V CHARGE AT 100V/R (C/10 RATE) PROG RUN EVENT TIMER NO TIMER > 30 MINUTES YES INHIBIT CHARGING INDICATE BATTERY FAULT AT CHRG NO BAT > 2.85V YES Figure 4. Flow Chart for Battery Charger Operation ...

  • Page 21

    V INx L SWx LTC3586 LTC3586-1 FBx R2 GND 3586 F05 Figure 5. Buck Converter Application Circuit and the input capacitance of the FBx pin and also helps to improve transient response for output voltages much ...

  • Page 22

    LTC3586/LTC3586-1 operaTion Buck Regulator Dropout Operation It is possible for a buck regulator’s input voltage, V approach its programmed output voltage (e.g., a battery voltage of 3.4V with a programmed output voltage of 3.3V). When this happens, the PMOS switch ...

  • Page 23

    B always off), to step-up the input voltage to the programmed output programmed V , then the converter will operate in OUT3 4-switch mode. In this case the switches sequence through the pattern ...

  • Page 24

    LTC3586/LTC3586-1 operaTion Zero Current Comparator The zero current comparator monitors the inductor current to the output and shuts off the synchronous rectifier once the current drops to approximately 65mA. This prevents the inductor current from reversing in polarity thereby improving ...

  • Page 25

    PowerPath CONTROLLER APPLICATIONS SECTION CLPROG Resistor and Capacitor As described in the High Efficiency Switching PowerPath Controller section, the resistor on the CLPROG pin deter- mines the average input current limit when the switching regulator is set to ...

  • Page 26

    LTC3586/LTC3586-1 applicaTions inForMaTion Over-Programming the Battery Charger The USB high power specification allows for drawn from the USB port (5V • 500mA). The PowerPath switching regulator transforms the voltage at V above the voltage at ...

  • Page 27

    By using a bias resistor different in value from NOM R25, the hot and cold trip points can be moved in either direction. The temperature span will change somewhat due to the non-linear behavior of the ...

  • Page 28

    LTC3586/LTC3586-1 applicaTions inForMaTion USB Inrush Limiting When a USB cable is plugged into a portable product, the inductance of the cable and the high-Q ceramic input capacitor form an L-C resonant circuit. If the cable does not have adequate mutual ...

  • Page 29

    Choose an inductor with a DC current rating at least 1.5 times larger than the maximum load current to ensure that the inductor does not saturate during normal operation. If output short circuit is a possible ...

  • Page 30

    LTC3586/LTC3586-1 applicaTions inForMaTion Table 7. Recommended Inductors for Buck-Boost Regulator MAX MAX INDUCTOR L I DCR SIZE × W × H) TYPE (µH) (A) (Ω) LPS4018 3.3 2.2 0.08 3.9 × 3.9 × 1.7 2.2 2.5 ...

  • Page 31

    The compensation network depicted in Figure 9 yields the transfer function • 3 • OUT 3   1  • ...

  • Page 32

    LTC3586/LTC3586-1 applicaTions inForMaTion + 0.8V ERROR FB3 AMP – Figure 8. Error Amplifier with Type I Compensation + 0.8V ERROR FB3 AMP – Figure 9. Error Amplifier with Type III Compensation ...

  • Page 33

    Furthermore, due to its high frequency switching circuitry imperative that the input capacitors, inductors and output capacitors be as close to the LTC3586/LTC3586-1 as possible and that there be an unbroken ground plane under the LTC3586/LTC3586-1 ...

  • Page 34

    ... ON THE TOP AND BOTTOM OF PACKAGE  Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. UFE Package 38-Lead Plastic QFN (4mm × ...

  • Page 35

    Rev B) REV DATE DESCRIPTION B 03/10 Changes to Absolute Maximum Ratings Section Changes to Electrical Characteristics Section Changes to Pin Functions Changes to Related Parts Section LTC3586/LTC3586-1 PAGE NUMBER ...

  • Page 36

    ... LOADS 510 C2 22µF RED 3.3V 1A SYSTEM RAIL/ I/O 121k 33pF 324k 22µF 2.2µF 105k 1.8V 400mA I/O/MEMORY 10pF 10µF 1µF MICROPROCESSOR 1.6V 400mA CORE 10pF 10µF 1µF 10µF LT 0309 REV B • PRINTED IN USA  LINEAR TECHNOLOGY CORPORATION 2008 3586fb ...