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[China]
Trade Verify
Address: Room L, 23rd Floor, Building B, Duhui 100, Zhonghang Rd, Futian District, Shenzhen City, Guangdong
Contact name:Allen Wang
Shenzhen Retechip Electronics Co., Ltd |
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Verified Suppliers
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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
| Product Attribute | Attribute Value |
|---|---|
| Product Category: | Switching Controllers |
| Boost | |
| 1 Output | |
| 50 kHz to 1 MHz | |
| 100 % | |
| 3 V to 65 V | |
| 3 V to 100 V | |
| 20 A | |
| - 40 C | |
| + 125 C | |
| SMD/SMT | |
| HTSSOP-20 | |
| Reel | |
| Fall Time: | 20 ns |
| Operating Supply Current: | 4 mA |
| Operating Supply Voltage: | 4.5 V to 65 V |
| Rise Time: | 25 ns |
| Shutdown: | Shutdown |
> 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.
---Shipping rates: After confirming the order, we will evaluate the shipping cost based on the weight of the
goods.
---Shipping option: We provide DHL, FedEx, EMS, SF Express, and Registered Air Mail international shipping.
---Shipping tracking: We will notify you by email with tracking number once order is shipped.
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:
---T/T,PayPal, Credit Card includes Visa, Master, American Express.
