LM5122MH/NOPB
Active3-65V WIDE VIN, CURRENT MODE SYNCHRONOUS BOOST CONTROLLER WITH MULTIPHASE CAPABILITY
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LM5122MH/NOPB
Active3-65V WIDE VIN, CURRENT MODE SYNCHRONOUS BOOST CONTROLLER WITH MULTIPHASE CAPABILITY
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Technical Specifications
Parameters and characteristics for this part
| Specification | LM5122MH/NOPB |
|---|---|
| Clock Sync | True |
| Control Features | Soft Start, Frequency Control |
| Duty Cycle (Max) [Max] | 100 % |
| Frequency - Switching [Max] | 1 MHz |
| Function | Step-Up |
| 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 / Case | 20-PowerTSSOP |
| Package / Case | 0.173 in |
| Package / Case [custom] | 4.4 mm |
| Supplier Device Package | 20-HTSSOP |
| Synchronous Rectifier | True |
| Topology | Boost |
| Voltage - Supply (Vcc/Vdd) [Max] | 65 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 4.5 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Arrow | N/A | 73 | $ 2.44 | |
| Digikey | Tube | 1 | $ 5.59 | |
| 10 | $ 5.02 | |||
| 73 | $ 4.75 | |||
| 146 | $ 4.12 | |||
| 292 | $ 3.91 | |||
| 511 | $ 3.50 | |||
| 1022 | $ 2.96 | |||
| 2555 | $ 2.81 | |||
| Texas Instruments | TUBE | 1 | $ 4.22 | |
| 100 | $ 3.70 | |||
| 250 | $ 2.59 | |||
| 1000 | $ 2.09 | |||
Description
General part information
LM5122-Q1 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.
Documents
Technical documentation and resources
