 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
LTC3577 Datasheet(PDF) 1 Page - Linear Technology |
|
|
|||||||||||||||||||||||||||||
LTC3577 Datasheet(HTML) 1 Page - Linear Technology |
|
|
1 / 52 page  LTC3577/LTC3577-1 1 3577f TYPICAL APPLICATION FEATURES APPLICATIONS DESCRIPTION Highly Integrated 6-Channel Portable PMIC The LTC®3577 is a highly integrated power management IC for single cell Li-Ion/Polymer battery applications. It includes a PowerPath manager with automatic load priori- tization, a battery charger, an ideal diode, input overvoltage protection and numerous other internal protection features. The LTC3577 is designed to accurately charge from current limited supplies such as USB by automatically reducing charge current such that the sum of the load current and the charge current does not exceed the programmed input current limit (100mA or 500mA modes). The LTC3577 reduces the battery voltage at elevated temperatures to improve safety and reliability. Efficient high current charg- ing from supplies up to 38V is available using the on-chip Bat-Track controller. The LTC3577 also includes a push- button input to control the three synchronous step-down switching regulators and system reset. The onboard LED backlight boost circuitry can drive up to 10 series LEDs and includes versatile digital dimming via I2C input. The I2C input also controls two 150mA LDOs as well as other operating modes and status read back. The LTC3577 is available in a low profile 4mm × 7mm × 0.75mm 44-pin QFN package. LED Driver Efficiency 10 LEDs n Full Featured Li-Ion/Polymer Charger/PowerPath™ Control with Instant-On Operation n Triple Adjustable High Efficiency Step-Down Switching Regulators (800mA, 500mA, 500mA IOUT) n 6μA Battery Drain Current in Hard Reset n Bat-Track™ Control for External HV Buck DC/DCs n I2C Adjustable SW Slew Rates for EMI Reduction n High Temperature Battery Voltage Reduction Improves Safety and Reliability n Overvoltage Protection for USB (VBUS)/Wall Inputs Provides Protection to 30V n Integrated 40V Series LED Backlight Driver with 60dB Brightness Control and Gradation via I2C n 1.5A Maximum Charge Current with Thermal Limiting n Battery Float Voltage:4.2V (LTC3577) 4.1V (LTC3577-1) n Pushbutton On/Off Control with System Reset n Dual 150mA Current Limited LDOs n Small 4mm × 7mm 44-Pin QFN Package n PNDs, DMB/DVB-H; Digital/Satellite Radio; Media Players n Portable Industrial/Medical Products n Universal Remotes, Photo Viewers n Other USB-Based Handheld Products L, LT, LTC, LTM, Linear Technology and the Linear logo 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, 6700364, 7511390, 5481178, 6580258. Other Patents Pending. + 100mA/500mA 1000mA HV SUPPLY 8V TO 38V (TRANSIENTS TO 60V) USB CHARGE PB 2 CC/CV CHARGER LED BACKLIGHT WITH DIGITALLY CONTROLLED DIMMING DUAL LDO REGULATORS LTC3577/LTC3577-1 TRIPLE HIGH EFFICIENCY STEP-DOWN SWITCHING REGULATORS WITH PUSHBUTTON CONTROL HIGH VOLTAGE BUCK DC/DC 0V SINGLE CELL Li-Ion UP TO 10 LED BOOST VOUT 0.8V to 3.6V/800mA 0.8V to 3.6V/150mA 0.8V to 3.6V/150mA 0.8V to 3.6V/500mA 0.8V to 3.6V/500mA NTC I2C PORT 3577 TA01a OVERVOLTAGE PROTECTION OPTIONAL LED CURRENT (A) 20 30 50 60 80 90 1.E-06 1.E-05 1.E-04 1.E-03 1.E-02 1.E-01 3577 TA01b 10 70 40 0 MAX PWM CONSTANT CURRENT |
Similar Part No. - LTC3577 |
|
Similar Description - LTC3577 |
|
|
Link URL |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link to Datasheet | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
