Datasheet Summary
Features n Wide Input Voltage Range: 3V to 40V n Single Feedback Pin for Positive or Negative
Output Voltage n Internal 5A/40V Power Switch n Current Mode Control Provides Excellent Transient
Response n Programmable Operating Frequency (100kHz to
1MHz) with One External Resistor n Synchronizable to an External Clock n Low Shutdown Current < 1μA n Internal 5.2V Low Dropout Voltage Regulator n Programmable Input Undervoltage Lockout with
Hysteresis n Programmable Soft-Start n Thermally Enhanced QFN (5mm × 6mm) Package
APPLICATIONS n Automotive n Tele n Industrial
Boost, Flyback, SEPIC and Inverting Converter with 5A, 40V Switch
DESCRIPTION
The LT®3957A is a wide input range,...