Datasheet LTC7804 (Analog Devices) - 4

LTC7804
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC7804EMSE#PBF LTC7804EMSE#TRPBF 7804 16-Lead Plastic MSOP –40°C to 125°C LTC7804IMSE#PBF LTC7804IMSE#TRPBF 7804 16-Lead Plastic MSOP –40°C to 125°C LTC7804HMSE#PBF LTC7804HMSE#TRPBF 7804 16-Lead Plastic MSOP –40°C to 150°C LTC7804EUD#PBF LTC7804EUD#TRPBF 7804 16-Lead (3mm × 3mm) Plastic QFN –40°C to 125°C LTC7804IUD#PBF LTC7804IUD#TRPBF 7804 16-Lead (3mm × 3mm) Plastic QFN –40°C to 125°C LTC7804HUD#PBF LTC7804HUD#TRPBF 7804 16-Lead (3mm × 3mm) Plastic QFN –40°C to 150°C
AUTOMOTIVE PRODUCTS**
LTC7804EMSE#WPBF LTC7804EMSE#WTRPBF 7804 16-Lead Plastic MSOP –40°C to 125°C LTC7804IMSE#WPBF LTC7804IMSE#WTRPBF 7804 16-Lead Plastic MSOP –40°C to 125°C LTC7804HMSE#WPBF LTC7804HMSE#WTRPBF 7804 16-Lead Plastic MSOP –40°C to 150°C LTC7804EUD#WPBF LTC7804EUD#WTRPBF 7804 16-Lead (3mm × 3mm) Plastic QFN –40°C to 125°C LTC7804IUD#WPBF LTC7804IUD#WTRPBF 7804 16-Lead (3mm × 3mm) Plastic QFN –40°C to 125°C LTC7804HUD#WPBF LTC7804HUD#WTRPBF 7804 16-Lead (3mm × 3mm) Plastic QFN –40°C to 150°C Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix.
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Versions of this part are available with controlled manufacturing to support the quality and reliability requirements of automotive applications. These models are designated with a #W suffix. Only the automotive grade products shown are available for use in automotive applications. Contact your local Analog Devices account representative for specific product ordering information and to obtain the specific Automotive Reliability reports for these models. Rev. 0 4 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Main Control Loop INTVCC/EXTVCC Power Boost Supply and Dropout (BOOST and SW Pins) Shutdown and Start-Up (RUN, SS Pins) Light Load Current Operation: Burst Mode Operation, Pulse-Skipping or Forced Continuous Mode (MODE Pin) Frequency Selection, Spread Spectrum and Phase-Locked-Loop (FREQ and PLLIN/SPREAD Pins) Operation When VIN > VOUT Operation at Low Input Voltage BOOST Supply Refresh and Internal Charge Pump Applications Information SENSE+ and SENSE– Pins Low Value Resistor Current Sensing Inductor DCR Sensing Inductor Value Calculation Inductor Core Selection Power MOSFET Selection CIN and COUT Selection Setting Output Voltage RUN Pin Soft-Start (SS Pin) INTVCC Regulators Topside MOSFET Driver Supply (CB, DB) Phase-Locked Loop and Frequency Synchronization Setting the Operating Frequency Selecting the Light-Load Operating Mode Minimum On-Time Considerations Fault Conditions: Overtemperature Protection Efficiency Considerations Checking Transient Response Design Example PC Board Layout Checklist PC Board Layout Debugging Package Description Typical Application Related Parts