LM62440-Q1 Series
Automotive 3-V to 36-V, 4-A, low-noise synchronous step-down converter
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
Automotive 3-V to 36-V, 4-A, low-noise synchronous step-down converter
| Part | Voltage - Input (Max) [Max] | Voltage - Output (Max) [Max] | Package / Case | Voltage - Input (Min) [Min] | Grade | Current - Output | Topology | Voltage - Output (Min/Fixed) [Min] | Output Configuration | Frequency - Switching [Max] | Frequency - Switching [Min] | Qualification | Supplier Device Package [y] | Supplier Device Package [x] | Supplier Device Package | Mounting Type | Synchronous Rectifier | Output Type | Operating Temperature [Max] | Operating Temperature [Min] | Function | Number of Outputs | Frequency - Switching | Output Type | Voltage - Output (Min/Fixed) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments LM62440BPPQRJRRQ1 | 36 V | 34.2 V | 14-PowerVFQFN | 3 V | Automotive | 4 A | Buck | 1 V | Positive | 2.2 MHz | 200 kHz | AEC-Q100 | 3.5 | 4 | 14-VQFN-HR | Surface Mount, Wettable Flank | Adjustable | 150 C | -40 °C | Step-Down | 1 | ||||
Texas Instruments LM62440APPQRJRRQ1 | 36 V | 34.2 V | 14-PowerVFQFN | 3 V | Automotive | 4 A | Buck | 1 V | Positive | 2.2 MHz | 200 kHz | AEC-Q100 | 3.5 | 4 | 14-VQFN-HR | Surface Mount, Wettable Flank | Adjustable | 150 C | -40 °C | Step-Down | 1 | ||||
Texas Instruments LM62440BLPQRJRRQ1 | 36 V | 14-PowerVFQFN | 3 V | Automotive | 4 A | Buck | Positive | AEC-Q100 | 3.5 | 4 | 14-VQFN-HR | Surface Mount, Wettable Flank | 150 C | -40 °C | Step-Down | 1 | 400 kHz | 27.03 °C/W | 3.3 V | ||||||
Texas Instruments LM62440CPPQRJRRQ1 | 36 V | 34.2 V | 14-PowerVFQFN | 3 V | Automotive | 4 A | Buck | 1 V | Positive | 2.2 MHz | 200 kHz | AEC-Q100 | 3.5 | 4 | 14-VQFN-HR | Surface Mount, Wettable Flank | Adjustable | 150 C | -40 °C | Step-Down | 1 |
Key Features
• AEC-Q100 qualified for automotive applicationsTemperature grade 1: –40°C to +150°C, TJFunctional Safety-CapableDocumentation available to aid functional safety system designOptimized for ultra low EMI requirementsHotRod™ package and parallel input path minimize switch node ringingSpread spectrum reduces peak emissions2.1-MHz and 400-kHz factory optionsAdjustable SW node rise timePin selectable FPWM mode for constant frequency at light loadsDesigned for automotive applicationsSupports 42-V automotive load dump±1% total output regulation accuracyVOUTadjustable from 1 V to 95% of VIN, with factory options for 5-V and 3.3-V fixed output voltagesHigh efficiency power conversion at all loads7-µA no load current at 13.5 VIN, 3.3 VOUT83% PFM efficiency at 1 mA, 13.5 VIN, 5 VOUTExternal bias option for improved efficiencySuitable for scalable power suppliesPin compatible with:LM61440-Q1(36 V, 4 A, adjustable fSW)LM61460-Q1(36 V, 6 A, adjustable fSW)LMQ62440-Q1(36 V, 4 A, internal capacitors)AEC-Q100 qualified for automotive applicationsTemperature grade 1: –40°C to +150°C, TJFunctional Safety-CapableDocumentation available to aid functional safety system designOptimized for ultra low EMI requirementsHotRod™ package and parallel input path minimize switch node ringingSpread spectrum reduces peak emissions2.1-MHz and 400-kHz factory optionsAdjustable SW node rise timePin selectable FPWM mode for constant frequency at light loadsDesigned for automotive applicationsSupports 42-V automotive load dump±1% total output regulation accuracyVOUTadjustable from 1 V to 95% of VIN, with factory options for 5-V and 3.3-V fixed output voltagesHigh efficiency power conversion at all loads7-µA no load current at 13.5 VIN, 3.3 VOUT83% PFM efficiency at 1 mA, 13.5 VIN, 5 VOUTExternal bias option for improved efficiencySuitable for scalable power suppliesPin compatible with:LM61440-Q1(36 V, 4 A, adjustable fSW)LM61460-Q1(36 V, 6 A, adjustable fSW)LMQ62440-Q1(36 V, 4 A, internal capacitors)
Description
AI
The LM62440-Q1 is an automotive-focused, high-performance, DC-DC synchronous step-down converter. With integrated high-side and low-side MOSFETs, up to 4 A of output current is delivered over a wide input range of 3.0 V to 36 V; 42-V tolerance supports load dump for durations of 400 ms. The LM62440-Q1 implements soft recovery from dropout, eliminating overshoot on the output.
The LM62440-Q1 is specifically designed for minimal EMI. The device incorporates pseudorandom spread spectrum, adjustable SW node rise time, a low-EMI VQFN-HR package featuring low switch node ringing, and an optimized pinout for ease of use. The switching frequency can be synchronized between 200 kHz and 2.2 MHz to avoid noise sensitive frequency bands. In addition, either 2.1-MHz or 400-kHz frequency factory options can be selected for improved efficiency at low operating frequency or smaller solution size at high operating frequency.
Auto mode enables frequency foldback when operating at light loads, allowing an unloaded current consumption of only 7 µA (typical) and high light load efficiency. Seamless transition between PWM and PFM modes, along with very low MOSFET ON resistances and an external bias input, provides exceptional efficiency across the entire load range.
The LM62440-Q1 is an automotive-focused, high-performance, DC-DC synchronous step-down converter. With integrated high-side and low-side MOSFETs, up to 4 A of output current is delivered over a wide input range of 3.0 V to 36 V; 42-V tolerance supports load dump for durations of 400 ms. The LM62440-Q1 implements soft recovery from dropout, eliminating overshoot on the output.
The LM62440-Q1 is specifically designed for minimal EMI. The device incorporates pseudorandom spread spectrum, adjustable SW node rise time, a low-EMI VQFN-HR package featuring low switch node ringing, and an optimized pinout for ease of use. The switching frequency can be synchronized between 200 kHz and 2.2 MHz to avoid noise sensitive frequency bands. In addition, either 2.1-MHz or 400-kHz frequency factory options can be selected for improved efficiency at low operating frequency or smaller solution size at high operating frequency.
Auto mode enables frequency foldback when operating at light loads, allowing an unloaded current consumption of only 7 µA (typical) and high light load efficiency. Seamless transition between PWM and PFM modes, along with very low MOSFET ON resistances and an external bias input, provides exceptional efficiency across the entire load range.