Datasheet LTC7801 (Analog Devices) - 38

LTC7801
TYPICAL APPLICATION
VIN 7V to 140V CINA CINB 100µF 0.47µF x3 V TG M IN TOP RUN BOOST x2 L1 RSENSE NDRV CB 33µH 8mΩ 0.1µF VOUT DRVCC 12V* SW C 5A DRVCC C LTC7801 OUTB COUTA 4.7µF BG MBOT 22µF 150µF x3 OVLO DRVUV SENSE+ *VOUT FOLLOWS VIN WHEN VIN < 12V CSNS MODE 1nF SENSE– RB CB PGOOD EXTV 511k 10pF R CC PGOOD 100k VFB INTV ITH CC SS R CPUMP_EN ITH C 10k INTVCC DRVSET CSS C R ITHB A 0.1µF 0.1µF 100pF 36.5k R FREQ DRVSET PLLIN CITHA 80.6k RFREQ M 4.7nF TOP, MBOT: BSC520N15NS3G 30.1k L1: WURTH 7443633300 GND COUTA: AVX TPSD157M016R0125 7801 F13
Figure 13. High Efficiency 140V to 12V Step-Down Regulator RELATED PARTS PART NUMBER DESCRIPTION COMMENTS
LTC3895 150V Low IQ, Synchronous Step-Down DC/DC Controller 4V ≤ VIN ≤ 140V, 150VPK, 0.8V ≤ VOUT ≤ 60V, IQ = 40µA PLL Fixed 100% Duty Cycle Capability, Adjustable 5V to 10V Gate Drive Frequency 50kHz to 900kHz LTC7800 60V, Low IQ, Synchronous Step-Down DC/DC Controller 4V ≤ VIN ≤ 60V, 0.8V ≤ VOUT ≤ 24V, IQ = 50µA PLL Fixed Frequency with 99% Duty Cycle 320kHz to 2.25MHz LTC3871 Bidirectional PolyPhase® Synchronous Buck or Boost VHIGH Up to 100V, VLOW Up to 30V, High Power Buck or Boost On Demand Controller LTC3892/ 60V Low IQ, Dual, 2-Phase Synchronous Step-Down DC/DC 4V ≤ VIN ≤ 60V, 0.8V ≤ VOUT ≤ 0.99VIN, PLL Fixed Frequency 50kHz to LTC3892-1 Controller with 99% Duty Cycle 900kHz, Adjustable 5V to 10V Gate Drive, IQ = 29µA LTC3639 High Efficiency, 140V 100mA Synchronous Step-Down Integrated Power MOSFETs, 4V ≤ VIN ≤ 150V, 0.8V ≤ VOUT ≤ VIN, Regulator IQ = 12µA, MSOP-16 (12) LTC3638 High Efficiency, 150V 250mA Synchronous Step-Down Integrated Power MOSFETs, 4V ≤ VIN ≤ 150V, 0.8V ≤ VOUT ≤ VIN, Regulator IQ = 12µA, MSOP-16 (12) LTC7138 High Efficiency, 150V 400mA Synchronous Step-Down Integrated Power MOSFETs, 4V ≤ VIN ≤ 150V, 0.8V ≤ VOUT ≤ VIN, Regulator IQ = 12µA, MSOP-16 (12) LTC3899 60V Triple Output, Buck/Buck/Boost Synchronous Controller 4.5V(Down to 2.2V After Start-Up) ≤ VIN ≤ 60V, Buck VOUT Range: 0.8V to with 30µA Burst Mode IQ 60V, Boost VOUT Up to 60V LTC7860 High Efficiency Switching Surge Stopper 3.5V ≤ VIN ≤ 60V, Expandable to 200V+, Adjustable VOUT Clamp and Current Limit, Power Inductor Improves EMI, MSOP-12 LT8631 100V, 1A Synchronous Micropower Step-Down Regulator Integrated Power MOSFETs, 3V ≤ VIN ≤ 100V, 0.8V ≤ VOUT ≤ 60V, IQ = 7µA, TSSOP-20(16) LTC3896 150V Low IQ, Synchronous Inverting DC/DC Controller 4V ≤ VIN ≤ 140V, 150VPK, –60V ≤ VOUT ≤ –0.8V, Ground-Reference Interface Pins, Adjustable 5V to 10V Gate Drive, IQ = 40µA LTC3897 PolyPhase Synchronous Boost Controller with Input/Output 4.5V ≤ VIN ≤ 65V, VOUT Up to 60V, IQ = 55µA Fixed Frequency 50kHz to Protection and Adjustable Gate Drive Voltage 900kHz LTC7103 105V, 2.3A Low EMI Synchronous Step-Down Regulator 4.4V ≤ VIN ≤ 105V, 1V ≤ VOUT ≤ VIN, IQ = 2µA Fixed Frequency 200kHz to 2MHz, 5mm × 6mm QFN Rev. A 38 12/20 www.analog.com For more information www.analog.com ANALOG DEVICES, INC. 2017-2020 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts