Datasheet Summary
No RSENSETM Constant Frequency Current Mode
Boost/Flyback/SEPIC DC/DC Controller
Features n VIN and VOUT Limited Only by External ponents n Internal or Programmable External Soft-Start n Constant Frequency 200kHz Operation n Adjustable Current Limit n Current Sense Resistor Optional n ±1.5% Voltage Reference Accuracy n Current Mode Operation for Excellent Line and Load
Transient Response n 4.1V Undervoltage Threshold for Logic Level
MOSFET Applications n Low Quiescent Current: 300μA n Low Profile (1mm) ThinSOTTM and (0.75mm)
2mm × 3mm DFN Package
APPLICATIONS n Tele Power Supplies n Automotive Power Supplies n PoE Applications
DESCRIPTION
The LTC®3873-5 is a constant...