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LM5122QMH/NOPB / Switching Controllers Auto Wide Input Sync Boost Cntrlr
| Product Attribute | Attribute Value |
|---|---|
| Texas Instruments | |
| Product Category: | Switching Controllers |
| RoHS: | Details |
| 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 | |
| AEC-Q100 | |
| Tube | |
| Brand: | Texas Instruments |
| Fall Time: | 20 ns |
| Operating Supply Current: | 4 mA |
| Operating Supply Voltage: | 4.5 V to 65 V |
| Product Type: | Switching Controllers |
| Rise Time: | 25 ns |
| Series: | LM5122-Q1 |
| Shutdown: | Shutdown |
| Factory Pack Quantity: | 73 |
| Subcategory: | PMIC - Power Management ICs |
| Type: | Current Mode PWM Controllers |
| Unit Weight: | 0.002885 oz |
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 Nchannel MOSFET gate drivers with adaptive deadtime 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.
