(China (Mainland))
Product Summary
The LTC3787EGN is a PolyPhase Synchronous Boost Controller that drives two N-channel power MOSFET stages out-of-phase. Multiphase operation reduces input and output capacitor requirements and allows the use of smaller inductors than the single-phase equivalent. Synchronous rectification increases efficiency, reduces power losses and eases thermal requirements, enabling high power boost applications.
Parametrics
LTC3787EGN absolute maximum ratings: (1)VBIAS:–0.3V to 40V; (2)BOOST1 and BOOST2: –0.3V to 76V; (3)SW1 and SW2: –0.3V to 70V; (4)RUN: –0.3V to 8V; (5)Maximum Current Sourced into Pin From Source >8V: 100μA; (6)PGOOD, PLLIN/MODE: –0.3V to 6V; (7)INTVCC, (BOOST1 - SW1), (BOOST2 - SW2): –0.3V to 6V; (8)EXTVCC: –0.3V to 6V; (9)SENSE1+, SENSE1–, SENSE2+, SENSE2–: –0.3V to 40V; (10)SENSE1+ - SENSE1–), (SENSE2+ - SENSE2–):–0.3V to 0.3V; (11)ILIM, SS, ITH, FREQ, PHASMD, VFB: –0.3V to INTVCC; (12)Operating Junction Temperature Range (Note 2):–40 to 125℃; (13)Storage Temperature Range: –65 to 150℃
Features
LTC3787EGN features: (1)2-Phase Operation Reduces Required Input and Output Capacitance and Power Supply Induced Noise; (2)Synchronous Operation for Highest Efficiency and Reduced Heat Dissipation; (3)Wide VIN Range: 4.5V to 38V (40V Abs Max) and Operates Down to 2.5V After Start-Up; (4)Output Voltage Up to 60V; (5)±1% 1.200V Reference Voltage; (6)RSENSE or Inductor DCR Current Sensing; (7)100% Duty Cycle Capability for Synchronous MOSFET; (8)Low Quiescent Current: 135μA; (9)Phase-Lockable Frequency (75kHz to 850kHz); (10)Programmable Fixed Frequency (50kHz to 900kHz); (11)Power Good Output Voltage Monitor; (12)Low Shutdown Current, IQ < 8μA; (13)Internal LDO Powers Gate Drive from VBIAS or EXTVCC; (14)Thermally Enhanced Low Profile 28-Pin 4mm × 5mm QFN Package and Narrow SSOP Package.
Diagrams
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 LTC3787EGN#PBF |
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IC REG CTRLR BST PWM CM 28-SSOP |
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LTC3787EGN#TRPBF |
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IC REG CTRLR BST PWM CM 28-SSOP |
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