Switching Controllers Auto Wide Input Sync Boost Cntrlr
The LM5122 is a multi-phase capable synchronous boost controller. This article mainly covers its datasheet, application, circuit, and more details about LM5122.
LM5122 Boost Controller: Application, Datasheet, Circuit
Switching Controllers Auto Wide Input Sync Boost Cntrlr The LM5122 is a multi-phase capable synchronous boost controller. This article mainly covers its datasheet, application, circuit, and more details about LM5122.
2487
Apr 7, 2022
Bishop Emma
LM5122QMHX/NOPB
122In Stock
Min.: 1 Mult.: 1
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LM5122 Pinout
LM5122 Pinout
LM5122 CAD Model
Symbol
LM5122 Symbol
Footprint
LM5122 Footprint
3D Model
LM5122 3D Model
LM5122 Description
The LM5122 is a multi-phase capable synchronous boost controller designed for synchronous boost regulator applications with great efficiency. Peak-current-mode control is used as the control approach. Current-mode control has built-in line feed-forward, cycle-by-cycle current limiting, and loop compensation is simple.
LM5122 Feature
• 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
LM5122 Funtional Block Diagram
The following figure shows the functional block diagram for LM5122. The LM5122 wide input range synchronous boost controller features all of the functions necessary to implement a highly efficient synchronous boost regulator. The regulator control method is based upon peak current mode control.
LM5122 Functional Block Diagram
LM5122 Application
• 12-V, 24-V, and 48-V Power Systems
• Automotive Start-Stop
• Audio Power Supply
• High-Current Boost Power Supply
LM5122 Typical Application Circuit
The typical application circuit of LM5122 is shown below.
LM5122 Package
LM5122 Package
Specifications
LM5122QMHX/NOPB Tech Specifications
LM5122QMHX/NOPB Tech Specifications
Texas Instruments LM5122QMHX/NOPB technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments LM5122QMHX/NOPB.
| Product Attribute | Attribute Value | |
|---|---|---|
| Lifecycle Status | ACTIVE (Last Updated: 3 days ago) | |
| Factory Lead Time | 6 Weeks | |
| Mount | Surface Mount | |
| Mounting Type | Surface Mount | |
| Package / Case | 20-PowerTSSOP (0.173, 4.40mm Width) | |
| Number of Pins | 20Pins | |
| Operating Temperature | -40°C~125°C TJ | |
| Packaging | Tape & Reel (TR) | |
| Series | Automotive, AEC-Q100 | |
| JESD-609 Code | e3 | |
| Pbfree Code | yes | |
| Part Status | Active | |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | |
| Number of Terminations | 20Terminations | |
| ECCN Code | EAR99 | |
| Terminal Finish | Matte Tin (Sn) | |
| Terminal Position | DUAL | |
| Terminal Form | GULL WING |
| Product Attribute | Attribute Value | |
|---|---|---|
| Peak Reflow Temperature (Cel) | 260 | |
| Supply Voltage | 12V | |
| Terminal Pitch | 0.65mm | |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED | |
| Base Part Number | LM5122 | |
| Function | Step-Up | |
| Number of Outputs | 1Output | |
| Qualification Status | Not Qualified | |
| Output Voltage | 100V | |
| Output Type | Transistor Driver | |
| Operating Supply Voltage | 65V | |
| Input Voltage-Nom | 12V | |
| Analog IC - Other Type | SWITCHING CONTROLLER | |
| Operating Supply Current | 4mA | |
| Output Configuration | Positive | |
| Output Current | 15A | |
| Voltage - Supply (Vcc/Vdd) | 4.5V~65V | |
| Quiescent Current | 4mA |
| Product Attribute | Attribute Value | |
|---|---|---|
| Control Features | Frequency Control, Soft Start | |
| Input Voltage (Min) | 4.5V | |
| Topology | Boost | |
| Control Mode | CURRENT-MODE | |
| Frequency - Switching | Up to 1MHz | |
| Control Technique | PULSE WIDTH MODULATION | |
| Rise Time | 25ns | |
| Synchronous Rectifier | Yes | |
| Fall Time (Typ) | 20 ns | |
| Max Duty Cycle | 100 % | |
| Height | 1.2mm | |
| Length | 6.5mm | |
| Width | 4.4mm | |
| Thickness | 1mm | |
| RoHS Status | ROHS3 Compliant | |
| Lead Free | Lead Free |
Datasheet PDF
LM5122QMHX/NOPB Documents
LM5122QMHX/NOPB Documents
Download datasheets and manufacturer documentation for LM5122QMHX/NOPB
Datasheets
Wide Vin DC/DC Power Solutions Guide
Frequently Asked Questions
What is a LM5122?
A multi-phase capable synchronous boost controller.
What type of driver does the LM5122 synchronous boost controller provide?
N-channel MOSFET.
What is the LM5122 device called?
Step-up dc-dc converter.
What does the following design procedure do for the LM5122 device?
Select component values.
FAQ
What is a LM5122?
A multi-phase capable synchronous boost controller.
What type of driver does the LM5122 synchronous boost controller provide?
N-channel MOSFET.
What is the LM5122 device called?
Step-up dc-dc converter.
What does the following design procedure do for the LM5122 device?
Select component values.
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