LM5122QMHX/NOPB
ActiveAUTOMOTIVE, 3-V TO 65-V WIDE VIN, CURRENT MODE SYNCHRONOUS BOOST CONTROLLER WITH MULTIPHASE
LM5122QMHX/NOPB
ActiveAUTOMOTIVE, 3-V TO 65-V WIDE VIN, CURRENT MODE SYNCHRONOUS BOOST CONTROLLER WITH MULTIPHASE
Description
General part information
LM5122 Series
The LM5122ZA 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 multi-phase interleaved configuration. Additional features include thermal shutdown, frequency synchronization, hiccup-mode current limit, and adjustable line undervoltage lockout.
Technical Specifications
Parameters and characteristics for this part
| Specification | LM5122QMHX/NOPB |
|---|---|
| Clock Sync | Yes |
| Control Features | Soft Start, Frequency Control |
| Duty Cycle (Max) | 100 % |
| Frequency - Switching (Max) | 1 MHz |
| Function | Step-Up |
| Grade | Automotive |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature (Max) | 125 °C |
| Operating Temperature (Min) | -40 °C |
| Output Configuration | Positive |
| Output Phases | 1 |
| Output Type | Transistor Driver |
| Package Length | 0.173 in |
| Package Name | 20-HTSSOP, 20-PowerTSSOP |
| Package Width | 4.4 mm |
| Qualification | AEC-Q100 |
| Synchronous Rectifier | Yes |
| Topology | Boost |
| Voltage - Supply (Vcc/Vdd) Maximum | 65 V |
| Voltage - Supply (Vcc/Vdd) Minimum | 4.5 V |
Pricing
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