
Linear Technology
DESCRIPTION
The LT®3758/LT3758A 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 LT3758/LT3758A drive a low side external N-channel power MOSFET from an internal regulated 7.2V supply. The fixed frequency, current-mode architecture results in stable operation over a wide range of supply and output voltages.
FEATURES
■ Wide Input Voltage Range: 5.5V to 100V
■ Positive or Negative Output Voltage Programming
with a Single Feedback Pin
■ Current Mode Control Provides Excellent Transient
Response
■ Programmable Operating Frequency (100kHz to
1MHz) with One External Resistor
■ Synchronizable to an External Clock
■ Low Shutdown Current < 1µA
■ Internal 7.2V Low Dropout Voltage Regulator
■ Programmable Input Undervoltage Lockout with
Hysteresis
■ Programmable Soft-Start
■ Small 10-Lead DFN (3mm × 3mm) and
MSOPE Packages
APPLICATIONS
■ Automotive
■ Telecom
■ Industrial