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LTC7803 Datasheet(PDF) 34 Page - Analog Devices |
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LTC7803 Datasheet(HTML) 34 Page - Analog Devices |
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34 / 34 page  LTC7802 34 Rev. 0 For more information www.analog.com ANALOG DEVICES, INC. 2020 09/20 www.analog.com RELATED PARTS TYPICAL APPLICATION Figure 12. High Efficiency 360W 2-Phase Single Output 12V Step-Down Regulator D1 MTOP1 2m MBOT1 0.1µF 1nF 1nF L1, 4.7µH 7802 F12a LTC7802 RUN1 RUN2 VFB2 MODE INTVCC INTVCC VIN VIN 16V TO 38V VOUT 12V, 30A SENSE1– BOOST2 EXTVCC VFB1 TG2 SW2 BG2 ITH1 TRACK/SS1 PGOOD1 PGOOD2 ITH2 TRACK/SS2 FREQ PLLIN/SPREAD SENSE1+ SW1 BG1 TG1 BOOST1 fSW = 200kHz MTOP1,2: VISHAY SIJA72ADP MBOT1,2: VISHAY SIR640ADP L1,2: COILCRAFT XAL1510-472MEB D1,2: CENTRAL SEMI CMDSH-4E COUT: KEMET T521X337M016ATE025 GND 140k 10k 0.1µF 100pF 10nF 5.9k 185k 2m SENSE2+ SENSE2– 100µF 10µF + INTVCC VIN D2 MTOP2 MBOT2 0.1µF L2, 4.7µH INTVCC VIN COUT 330µF 16V 10µF ×6 + 4.7µF 10pF PART NUMBER DESCRIPTION COMMENTS LTC7802-3.3 40V Dual Low IQ, 3MHz, 2-Phase Synchronous Step-Down Controller with Spread Spectrum and Fixed 3.3VOUT1 4.5V ≤ VIN ≤ 40V, VOUT Up to 40V, IQ = 12µA Fixed Frequency 100kHz to 3MHz, 4mm × 5mm QFN-28 LTC7803 40V Low IQ, 100% Duty Cycle, Synchronous Step-Down Controller with Spread Spectrum 4.5V ≤ VIN ≤ 40V, VOUT Up to 40V, IQ = 12µA Fixed Frequency 100kHz to 3MHz, 3mm × 3mm QFN-16/MSOP-16 LTC3807 38V Low IQ, Synchronous Step-Down Controller with 24V Output Voltage Capability 4V ≤ VIN ≤ 38V, 0.8V ≤ VOUT ≤ 24V, IQ = 50µA PLL Fixed Frequency 50kHz to 900kHz, 3mm × 4mm QFN-20/TSSOP-20 LTC3890/LTC3890-1/ LTC3890-2/LTC3890-3 60V, Low IQ, Dual 2-Phase Synchronous Step-Down DC/DC Controller with 99% Duty Cycle 4V ≤ VIN ≤ 60V, 0.8V ≤ VOUT ≤ 24V, IQ = 50µA PLL Fixed Frequency 50kHz to 900kHz LTC3892 60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC Controller with Adjustable Gate Drive Voltage 4V ≤ VIN ≤ 60V, 0.8V ≤ VOUT ≤ 24V, IQ = 29µA PLL Fixed Frequency 50kHz to 900kHz LTC3850 Dual, 2-Phase Synchronous Step-Down DC/DC Controller 4V ≤ VIN ≤ 24V, VOUT Up to 5.5V PLL Fixed Frequency 250kHz to 750kHz LTC3855 Dual, Multiphase, Synchronous Step-Down DC/DC Controller with Diff Amp and DCR Temperature Compensation 4.5V ≤ VIN ≤ 38V, 0.8V ≤ VOUT ≤ 12V PLL Fixed Frequency 250kHz to 770kHz, Excellent Current Share LTC3869/LTC3869-2 Dual Output, 2-Phase Synchronous Step-Down DC/DC Controller, with Accurate Current Share 4V ≤ VIN ≤ 38V, VOUT Up to 12.5V PLL Fixed 250kHz to 750kHz Frequency LTC3875 Dual, 2-Phase, Synchronous Controller with Sub-Milliohm DCR Sensing and Temperature Compensation 4.75V ≤ VIN ≤ 38V, 0.6V ≤ VOUT ≤ 3.5V/5V, Excellent Current Share LTC3774 Dual, Multiphase Current Mode Synchronous Step-Down DC/DC Controller for Sub-Milliohm DCR Sensing Operates with DrMOS, Power Blocks or External Drivers/MOSFETs, 4.5V≤ VIN ≤ 38V, 0.6V ≤ VOUT ≤ 3.5V |
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