LTC4410 USB Power Manager in ThinSOT FEATURES DESCRIPTIO Manages Total Power Between a USB Peripheral The LTC 4410 enables simultaneous battery charging and and Battery Charger operation of portable USB 1.0 and 2.0 compliant devices Minimal Voltage Drop (100mV at 500mA) while they are connected to a USB port. As the USB periph- Ultralow Battery Drain: 1A eral load increases, the LTC4410 proportionally reduces Reverse Current Blocking Diode Not Required the battery charge current to keep the total current less Undervoltage Lockout than 500mA or 100mA, depending on the state of the MODE Very Few External Components pin. Compatible with Several LTC Linear Battery Chargers The LTC4410 includes a USB present output that drives an Overtemperature Protected external P-channel MOSFET to disconnect the battery from Dual Battery Charge Priority Management the USB peripheral when the USB power is valid. This Low Profile (1mm) SOT-23 Package allows device operation when connected to the USB port, even when the battery is deeply discharged. U APPLICATIO S Other features include reverse current blocking, thermal shutdown and low quiescent current (80A in 500mA Cellular Phones MODE) that is compliant with USB Suspend Mode. PDAs Digital Cameras The LTC4410 is available in the low profile (1mm) SOT-23 TM MP3 Players (ThinSOT ) package. Battery Backup Systems , LTC and LT are registered trademarks of Linear Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation. TYPICAL APPLICATIO USB Powered Battery Charger and Power Manager System Load Step Response SYSTEM POWER V 100mA 500mA OUT MODE SUPPLY 4.35V TO 5.5V LTC4410 4.7F FROM V IN USB 200mA 4.7F GND CHP USBP LOAD IRLML6401 CURRENT 1 3.4k 0mA 1M 1% 440mA BATTERY CHARGER PROG CURRENT OFF ON BAT SHDN 240mA V LTC4053 NTC CC 1-CELL GND TIMER Li-Ion 0.1F 0mA 4410 TA02 4410 TA01 5s/DIV USB LTC4410 LTC4053 MODE MODE SHDN 500mA 1 1 100mA 0 1 SUSPEND 1 0 sn4410 4410fs 1 U ULTC4410 ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER INFORMATION (Note 1) V , V Voltages ...................................... 0.3V to 6V IN OUT ORDER PART TOP VIEW USBP, MODE, CHP Voltage ........................ 0.3V to 6V NUMBER V 1 6 V IN OUT I (Note 5) ............................................................ 2A VOUT GND 2 5 CHP LTC4410ES6 Operating Ambient Temperature Range MODE 3 4 USBP LTC4410E (Notes 3, 4) ........................40C to 85C S6 PACKAGE S6 PART MARKING Storage Temperature Range ................. 65C to 150C 6-LEAD PLASTIC TSOT-23 Lead Temperature (Soldering, 10 sec).................. 300C T = 125C, = 100C/W TO 150C/W JMAX JA LTK8 DEPENDING ON PC BOARD LAYOUT Consult LTC Marketing for parts specified with wider operating temperature ranges. ELECTRICAL CHARACTERISTICS The denotes specifications that apply over the full operating temperature range, otherwise specifications are at T = 25C. V = 5V unless otherwise noted. A IN PARAMETER CONDITIONS MIN TYP MAX UNITS Operating V Range 4.35 5.5 V IN Quiescent CurrentActive 100mA Mode (MODE = Low) 500 700 A 500mA Mode (MODE = High) 80 125 A CHP Compliance Voltage MODE = 5V, I = 500mA 0 4.0 V VOUT MODE = 0V, I = 0mA 0 3.5 V VOUT Reverse Current V = 4V, V = 0V 1 5 A OUT IN MODE Input Current MODE = 0V 0.1 5 A MODE = 5V 0.1 5 A MODE Input High 1.2 V MODE Input Low 0.4 V USBP Output High 1M Resistor to GND, V = 5V 4.8 4.98 V IN USBP Output Low 1M Resistor to V , V = 3.5V 20 100 mV IN IN UVLO and USBP Threshold Measured on V Rising 4.05 4.2 4.35 V IN UVLO and USBP Hysteresis Measured on V 80 100 120 mV IN CHP Output Current MODE = High, I = 0mA (Note 2) 0 30 A VOUT MODE = High, I = 500mA (Note 2) 470 500 530 A VOUT MODE = High, I = 500mA, T 0C, (Note 2) 460 500 540 A VOUT A MODE = High, I = 500mA, T < 0C, (Note 2) 450 500 550 A VOUT A MODE = Low, I = 0mA (Note 2) 370 A VOUT MODE = Low, I = 100mA (Note 2) 430 470 510 A VOUT Note 1: Absolute Maximum Ratings are those values beyond which the life Note 4: This IC includes overtemperature protection that is intended to of a device may be impaired. protect the device during momentary overload conditions. Junction temperature will exceed 125C when overtemperature protection is active. Note 2: Current flows out of CHP, voltage at CHP = 0V. Continuous operation above the specified maximum operating junction Note 3: The LTC4410E is guaranteed to meet performance specifications temperature may impair device reliability. from 0C to 70C. Specifications over the 40C to 85C operating Note 5: Based on long-term current density limitations. temperature range are assured by design, characterization and correlation with statistical process controls. sn4410 4410fs 2 U W U U WWW