Datasheet LTC3375 (Analog Devices) - 3

LTC3375
absoluTe MaxiMuM raTings pin conFiguraTion (Note 1)
VIN1-8, FB1-8, EN1-8, VCC, VSHNT, FBVCC, CT, TOP VIEW ON, KILL, IRQ, RST, PB, WDI, WDO, SYNC, RT, CC SHNT CC SDA, SCL ... –0.3V to 6V 48 EN1 47 EN2 46 SDA 45 SCL 44 TEMP 43 V 42 FBV 41 V 40 WDI 39 WDO 38 EN7 37 EN8 TEMP ...–0.3V to Lesser of (VCC + 0.3V) or 6V I FB1 1 36 FB8 IRQ, IRST, IWDO, ION ...5mA VIN1 2 35 VIN8 I SW1 3 34 SW8 VSHNT ..3mA SW2 4 33 SW7 Operating Junction Temperature Range VIN2 5 32 VIN7 (Notes 2, 3) .. –40°C to 150°C FB2 6 GND 31 FB7 FB3 49 30 FB6 Storage Temperature Range .. –65°C to 150°C 7 VIN3 8 29 VIN6 SW3 9 28 SW6 SW4 10 27 SW5 VIN4 11 26 VIN5 FB4 12 25 FB5 13 15 16 19 20 21 22 EN4 EN3 14 IRQ RT RST CT 17 ON PB EN6 23 EN5 24 SYNC 18 KILL UK PACKAGE 48-LEAD (7mm × 7mm) PLASTIC QFN TJMAX = 150°C, θJA = 34°C/W EXPOSED PAD (PIN 49) IS GND, MUST BE SOLDERED TO PCB
orDer inForMaTion LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3375EUK#PBF LTC3375EUK#TRPBF LTC3375UK 48-Lead (7mm × 7mm) Plastic QFN –40°C to 125°C LTC3375IUK#PBF LTC3375IUK#TRPBF LTC3375UK 48-Lead (7mm × 7mm) Plastic QFN –40°C to 125°C LTC3375HUK#PBF LTC3375HUK#TRPBF LTC3375UK 48-Lead (7mm × 7mm) Plastic QFN –40°C to 150°C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. 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/ 3375fd For more information www.linear.com/3375 3 Document Outline Features Applications Description Typical Application Table of Contents Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Application Related Parts Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Buck Switching Regulators Buck Regulators with Combined Power Stages Pushbutton Interface Power-Up and Power-Down Via Pushbutton Power-Up and Power-Down Via Enable Pin or I2C I2C Interface I2C Bus Speed I2C Start and Stop Conditions I2C Byte Format I2C Acknowledge I2C Slave Address I2C Sub-Addressed Writing I2C Bus Write Operation I2C Bus Read Operation Error Condition Reporting Via RST and IRQ Pins Temperature Monitoring and Overtemperature Protection RESET_ALL Functionality Programming the Operating Frequency VCC Shunt Regulator Watchdog Timer Applications Information Buck Switching Regulator Output Voltage and Feedback Network Buck Regulators Combined Buck Regulators VCC Shunt Regulator Input and Output Decoupling Capacitor Selection Choosing the CT Capacitor Programming the Global Register Programming the RST and IRQ Mask Registers Status Byte Read Back Typical Applications Package Description Typical Application Related Parts