Texas Instruments Switching Voltage Regulator Ic LM5122MHX/NOPB 1 Output

Texas Instruments switching regulator ic LM5122MHX/NOPB 1 Output SMT Voltage Controllers

> Typical applications

• 12-V, 24-V, and 48-V Power Systems

• Automotive Start-Stop

• Audio Power Supply

• High-Current Boost Power Supply

> Features

• Maximum Input Voltage: 65 V

• Minimum Input Voltage: 3 V (4.5 V for Start-Up)

• Output Voltage up to 100 V

• Bypass (VOUT = VIN) Operation

• 1.2-V Reference with ±1% Accuracy

• Free-Run and Synchronizable Switching to 1 MHz

• 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

• Multi-phase Capability

• Thermally Enhanced 20 or 24-Pin HTSSOP

> Description

The LM5122 is a multi-phase capable synchronous boost controller intended for high-efficiency synchronous boost regulator applications. The control method is based upon peak-current-mode control. Current-mode control provides inherent line feed forward, cycle-by-cycle current limiting, and ease of loop compensation.

The switching frequency is programmable up to 1 MHz. Higher efficiency is achieved by two robust N channel MOSFET gate drivers with adaptive dead time control. A user-selectable diode-emulation mode also enables discontinuous-mode operation for improved efficiency at light load conditions.

An internal charge pump allows 100% duty cycle for high-side synchronous switch (bypass operation). A 180° phase shifted clock output enables easy multiphase interleaved configuration. Additional features include thermal shutdown, frequency synchronization, hiccup-mode current limit, and adjustable line undervoltage lockout.F

> Specifications

> Trading Guide

Shipping:

---Delivery period: For in-stock parts, orders are estimated to ship out in 3 days,Once shipped, estimated

delivery time depends on the below carriers you chose:

• DHL Express, 3-7 business days.
• DHL eCommerce,12-22 business days.
• FedEx International Priority, 3-7 business days
• EMS, 10-15 business days.
• Registered Air Mail, 15-30 business days.

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goods.

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Returning warranty:

---Returning: Returns are normally accepted when completed within 30 days from date of shipment.Parts

should be unused and in original packaging. Customer has to take charge for the shipping.

Warranty:

---All Retechip purchases come with a 30day money back return policyThis warranty shall not apply to any

item where defects have been caused by improper customer assembly, failure by customer to follow

instructions,product modification, negligent or improper operation.

Ordering:

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