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LTC7813 Datasheet(PDF) 1 Page - Analog Devices |
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LTC7813 Datasheet(HTML) 1 Page - Analog Devices |
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1 / 59 page  Data Sheet LT8210-1 100V V IN and VOUT Synchronous 4-Switch Multiphase Buck-Boost DC/DC Controller Rev. A DOCUMENT FEEDBACK TECHNICAL SUPPORT One Analog Wa y, Wilmington, MA 01887 -2356, U.S.A. Tel: 781.329.47 00 ©2024 Analog Devices, Inc. Al l rights rese rve d. FEATURES Built-In Multiphase Current Sharing 18μA Pass-Thru Mode IQ with 99.9% Efficiency Pass-Thru or Fixed Output CCM, DCM Operation Programmable Non-Switching Pass-Thru Window VIN Range: 2.8V to 100V (4.5V for Start-Up) VOUT Range: 1V to 100V Reverse Input Protection to -40V ±2% Output Voltage Accuracy (–40°C to 125°C) Programmable Current Limit 10V Quad N-Channel MOSFET Gate Drivers ±20% Cycle-by-Cycle Inductor Current Limit No Top MOSFET Refresh Noise in Buck or Boost Fixed/Phase-Lockable Frequency: 80kHz to 400kHz Spread-Spectrum Frequency Modulation for Low EMI Power Good Output Voltage/Overcurrent Monitor Available in a 40-Lead (6mm x 6mm) QFN Package APPLICATIONS Industrial, Telecom, Avionics Systems, Automotive Qualification in Progress GENERAL DESCRIPTION The LT®8210-1 is a 4-switch synchronous buck-boost DC/DC controller that can operate in pass-thru mode, forced continuous conduction, or pulse-skipping mode. Pass-Thru is a feature that passes the input directly to the output when the input is within a user programmable window. Pass-Thru mode eliminates switching losses and EMI while maximizing efficiency. For input voltages above or below the pass-thru window, the buck or boost regulation loops maintain the output at the set maximum or minimum values, respectively. The LT8210-1 is pin compatible with the LT8210. The IMON pin on the LT8210-1 has an ISHARE function, which allows for masterless current sharing. Multiple LT8210-1 can be connected in parallel for higher output current and reduced voltage ripple. A masterless closed loop current sharing loop balances the current per phase and allows phase shedding. Optional reverse input protection down to -40V can be implemented with the addition of a single N-channel MOSFET. The LT8210-1 includes a precision current sense amplifier that can accurately monitor and limit output or input average current. ____________________________________________________________ All registered trademarks are the property of their respective owners. Protected by U.S. patents, including 10135340. TYPICAL APPLICATION Figure 1. Typical Application Drawing Figure 2. Pass-Thru Transfer Characteristic (VOUT(BOOST) = 8V, VOUT(BUCK) = 16V) 75A LOAD B VOUT VIN D A C FB2 TG1 BST1 SW1 BG1 SNSP1 SNSN1 PGND BG2 SW2 BST2 TG2 LT8210-1 EXTVCC FB1 IMON PWGD SNSP2 VOUT SNSN2 IMON VC1 VOUT VC2 VC1 GND SS VDD VC2 CLK1 PHASE 1 BST1 BST2 SYNC/ SPRD DG EN/UVLO GATEVCC VDD MODE1 VINP MODE2 VIN DG DBST1 DBST2 PASS-THRU: 8V TO 16V VIN CLK4 SYNC/ SPRD PHASE 4 (PHASE 2 AND PHASE 3) PASS–THRU REGION VIN VOUT EFFICIENCY INPUT VOLTAGE (V) 6 9 12 15 18 21 24 27 30 33 36 0 12 24 36 80 84 88 92 96 100 |
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Similar Description - LTC7813 |
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