Datasheet Analog Devices LT3757 LT3757A — Datenblatt

LT3757/LT3757A
Boost, Flyback, SEPIC and
Inverting Controller
Features Description Wide Input Voltage Range: 2.9V to 40V
nn Positive or Negative Output Voltage Programming
with a Single Feedback Pin
nn Current Mode Control Provides Excellent Transient
Response
nn Programmable Operating Frequency (100kHz to
1MHz) with One External Resistor
nn Synchronizable to an External Clock
nn Low Shutdown Current < 1ВµA
nn Internal 7.2V Low Dropout Voltage Regulator
nn Programmable Input Undervoltage Lockout with
Hysteresis
nn Programmable Soft-Start
nn Small 10-Lead DFN (3mm Г— 3mm) and Thermally
Enhanced 10-Pin MSOP Packages The LTВ®3757/LT3757A are wide input range, current
mode, DC/DC controllers which are capable of generating
either positive or negative output voltages. They can be
configured as either a boost, flyback, SEPIC or inverting
converter. The LT3757/LT3757A drive a low side external
N-channel power MOSFET from an internal regulated 7.2V …