TI LM25122QPWPTQ1

Step-Up, Step-Up/Step-DownBoost, Flyback, SEPIC3 В ~ 42 В

Overview

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An internal charge pump allows 100% duty cycle for high-side synchronous switch (Bypassoperation). A 180o phase shifted clock output enables easy multi-phase interleaved configuration.Additional features include thermal shutdown, frequency synchronization, hiccup mode current limitand adjustable line undervoltage lockout.

Features

• Maximum Input Voltage : 42 V

• Min Input Voltage : 3 V (4.5 V for startup)

• Output Voltage up to 50 V

• Bypass (VOUT = VIN) Operation

• 1.2 V Reference with ±1.0% Accuracy

• Free-Run and Synchronizable Switching to 600 kHz

• Peak Current Mode Control

• Robust 3 A Integrated Gate Drivers

• Adaptive Dead-Time Control

• Optional Diode Emulation Mode

• Programmable Cycle-by-Cycle Current Limit

• Hiccup Mode Overload Protection

• Programmable Line UVLO

• Programmable Soft-Start

• Thermal Shutdown Protection

• Low Shutdown Quiescent Current: 9 μA

• Programmable Slope Compensation

• Programmable Skip Cycle Mode Reduces Standby Power

• Allows External VCC Supply

• Inductor DCR Current Sensing Capability

• Multiphase Capability

• Thermally Enhanced 20-Pin HTSSOP

Applications

• 12-V, 24-V, and 48-V Power Systems

• Automotive Start-Stop

• Audio Power Supply

• High Current Boost Power Supply