LTC4066/LTC4066-1 USB Power Controller and Li-Ion Linear Charger with Low Loss Ideal Diode FEATURES DESCRIPTION n Seamless Transition Between Input Power Sources: The LTC 4066/LTC4066-1 are USB power managers and Li-Ion Battery, USB and 5V Wall Adapter Li-Ion battery chargers designed to work in portable n Low Loss (50m) Ideal Diode Path from BAT to OUT battery-powered applications. The parts control the total n Programmable Charge Current Detection (CHRG) current used by the USB peripheral for operation and n Load Dependent Charging Guarantees USB Input battery charging. The total input current can be limited Current Compliance to 100mA, 500mA or unlimited (i.e., above 2A). Battery n Analog Gas Gauge Function charge current is automatically reduced such that the sum n Charges Single Cell Li-Ion Batteries Directly from of the load current and the charge current does not exceed USB Port the programmed input current limit. n Constant-Current/Constant-Voltage Operation with The LTC4066/LTC4066-1 include a standalone constant- Thermal Feedback to Maximize Charging Rate current/constant-voltage linear charger for single cell Without Risk of Overheating* Li-ion batteries. The oat voltage applied to the battery n Selectable 100% or 20% Current Limit is held to a tight 0.8% tolerance, and charge current (e.g., 500mA/100mA) is programmable using an external resistor to ground. n Termination Timer Adapts to Actual Charge Current A programmable end-of-charge status output (CHRG) n Preset 4.2V Charge Voltage with 0.8% Accuracy indicates full charge. BAT pin charge and discharge cur- (4.1V for LTC4066-1) rents can be monitored via an analog output (I ). Total STAT n NTC Thermistor Input for Temperature Quali ed charge time is programmable by an external capacitor to Charging ground. When the battery drops 100mV below the oat n Thin Pro le (0.75mm) 24-Lead 4mm 4mm voltage, automatic recharging of the battery occurs. Also QFN Package featured is an NTC thermistor input used to monitor bat- n Ultrathin Pro le (0.55mm) 24-Lead 4mm 4mm tery temperature while charging. UTQFN Package (LTC4066 Only) The LTC4066/LTC4066-1 are available in a 24-pin thin APPLICATIONS pro le (0.75mm) 4mm 4mm QFN package. The LTC4066 is also available in a 24-pin ultrathin pro le (0.55mm) n Portable USB Devices 4mm 4mm UTQFN package. n GPS, Cameras, Broadband Wireless Modems L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. PowerPath n Mulitple Input Chargers is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. *Protected by U.S. Patents including 6522118. TYPICAL APPLICATION 600 I IN 500 5V (NOM) TO LDOs, FROM USB IN OUT REGs, ETC CABLE V BUS 400 V BAT 4.7F NTC 4.7F 510 510 + I LOAD NTC 300 WALL SHDN LTC4066 200 CHRG I BAT SUSPEND USB POWER SUSP ACPR CHARGING 100 500mA/100mA SELECT HPWR POL TO ADC FOR GAS GAUGE INPUT CURRENT CLDIS I 0 STAT LIMIT DISABLE TIMER PROG CLPROG GND 100 0 100 200 300 400 500 600 0.1F 100k 2k 2k I BAT I (mA) LOAD 4066 TA01 (IDEAL DIODE) 4066 TA02 4066fc 1 CURRENT (mA)LTC4066/LTC4066-1 ABSOLUTE MAXIMUM RATINGS (Notes 1 to 6) Terminal Voltage Pin Current (DC) t < 1ms and Duty Cycle < 1% IN (Note 7) .......................................................... 2.7A IN, OUT ................................................... 0.3V to 7V OUT, BAT (Note 7) .................................................. 5A Steady State Operating Temperature Range................. 40C to 85C IN, OUT, BAT ........................................... 0.3V to 6V Maximum Operating Junction Temperature ......... 125C NTC, V , TIMER, PROG, Storage Temperature Range .................. 65C to 125C NTC CLPROG, I ....................... 0.3V to (V + 0.3V) STAT CC CHRG, HPWR, SUSP, SHDN, WALL, ACPR, POL, CLDIS ...................... 0.3V to 6V PIN CONFIGURATION TOP VIEW TOP VIEW 24 23 22 21 20 19 24 23 22 21 20 19 OUT 1 18 CHRG OUT 1 18 CHRG BAT ACPR BAT ACPR 2 17 2 17 OUT 3 16 GND OUT 3 16 GND 25 25 BAT 4 15 V BAT 4 15 V NTC NTC BAT 5 14 NTC BAT 5 14 NTC NC 6 13 HPWR NC 6 13 HPWR 7 8 9 10 11 12 7 8 9 10 11 12 UF PACKAGE PF PACKAGE 24-LEAD (4mm s 4mm) PLASTIC QFN 24-LEAD (4mm s 4mm) PLASTIC UTQFN T = 125C, = 37C/W T = 125C, = 37C/W JMAX JA JMAX JA EXPOSED PAD (PIN ) IS GND, MUST BE SOLDERED TO PCB EXPOSED PAD (PIN ) IS GND, MUST BE SOLDERED TO PCB ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LTC4066EUF PBF LTC4066EUF TRPBF 4066 24-Lead (4mm 4mm) Plastic QFN 40C to 85C LTC4066EUF-1 PBF LTC4066EUF-1 TRPBF 40661 24-Lead (4mm 4mm) Plastic QFN 40C to 85C LTC4066EPF PBF LTC4066EPF TRPBF 4066T 40C to 85C 24-Lead (4mm 4mm) Plastic UTQFN Consult LTC Marketing for parts speci ed with wider operating temperature ranges. Consult LTC Marketing for information on non-standard lead based nish parts. For more information on lead free part marking, go to: