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The LT ®1339 is a high power synchronous current mode switching regulator controller. The IC drives dual N-channel MOSFETs to create a single IC solution for high power DC/DC converters in applications up to 60V.
The LT1339 incorporates programmable average current limiting, allowing accurate limiting of DC load current independent of inductor ripple current. The IC also incorporates user-adjustable slope compensation for minimization of magnetics at duty cycles up to 90%.
APPLICATIONS
■ 48V Telecom Power Supplies
■ Personal Computers and Peripherals
■ Distributed Power Converters
■ Industrial Control Systems
■ Lead-Acid Battery Backup Systems
■ Automotive and Heavy Equipment
Feature
■ High Voltage: Operation Up to 60V
■ High Current: Dual N-Channel Synchronous Drive Handles Up to 10,000pF Gate Capacitance
■ Programmable Average Load Current Limiting
■ 5V Reference Output with 10mA External Loading Capability
■ Programmable Fixed Frequency Synchronizable Current Mode Operation Up to 150kHz
■ Undervoltage Lockout with Hysteresis
■ Programmable Start Inhibit for Power Supply Sequencing and Protection
■ Adaptive Nonoverlapping Gate Drive Prevents Shoot-Through
