The LM73605-Q1/LM73606-Q1 family of devices are easy-to-use synchronous step-down DC-DC converters capable of driving up to 5 A (LM73605-Q1) or 6 A (LM73606-Q1) of load current from a supply voltage ranging from 3.5 V to 36 V. The LM73605-Q1/LM73606-Q1 provide exceptional efficiency and output accuracy in a very small solution size. Peak current-mode control is employed. Additional features such as adjustable switching frequency, synchronization to an external clock, FPWM option, power-good flag, precision enable, adjustable soft start, and tracking provide both flexible and easy-to-use solutions for a wide range of applications. Automatic frequency foldback at light load and optional external bias improve efficiency over the entire load range. The family requires few external components and has a pinout designed for simple PCB layout with optimal EMI and thermal performance. Protection features include thermal shutdown, input undervoltage lockout, cycle-by-cycle current limiting, and hiccup short-circuit protection. The LM73605-Q1 and LM73606-Q1 devices are pin-to-pin compatible for easy current scaling.
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Part number | Order | Vin (Min) (V) | Vin (Max) (V) | Vout (Min) (V) | Vout (Max) (V) | Iout (Max) (A) | Regulated outputs (#) | Switching frequency (Min) (kHz) | Switching frequency (Max) (kHz) | Iq (Typ) (mA) | Features | Control mode | Duty cycle (Max) (%) | Operating temperature range (C) | Rating | Package Group | Type | Package size: mm2:W x L (PKG) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
LM73606-Q1 |
|
3.5 | 36 | 1 | 34 | 6 | 1 | 350 | 2200 | 0.015 |
Enable
Forced PWM Frequency Synchronization Light Load Efficiency Over Current Protection Power Good Pre-Bias Start-Up Synchronous Rectification Tracking UVLO Fixed Wettable Flanks Package Soft Start Adjustable |
Current Mode | 96 | -40 to 125 | Automotive | WQFN | 30 | Converter | 30WQFN: 24 mm2: 4 x 6 (WQFN | 30) |
LM61440-Q1 | Samples not available | 3 | 36 | 1 | 34 | 4 | 1 | 200 | 2200 | 0.008 |
Enable
Frequency Synchronization Light Load Efficiency Over Current Protection Power Good Soft Start Fixed Spread Spectrum Synchronous Rectification Wettable Flanks Package |
Current Mode | 98 | -40 to 150 | Automotive | VQFN-HR | 14 | Converter | 14VQFN-HR: 14 mm2: 3.5 x 4 (VQFN-HR | 14) |
LM61460-Q1 |
|
3 | 36 | 1 | 34 | 6 | 1 | 200 | 2200 | 0.008 |
Enable
Frequency Synchronization Light Load Efficiency Over Current Protection Power Good Soft Start Fixed Spread Spectrum Synchronous Rectification Wettable Flanks Package |
Current Mode | 98 | -40 to 150 | Automotive | VQFN-HR | 14 | Converter | 14VQFN-HR: 14 mm2: 3.5 x 4 (VQFN-HR | 14) |
LM62440-Q1 | Samples not available | 3 | 36 | 1 | 34 | 4 | 1 | 2200 | 2200 | 0.008 |
Enable
Frequency Synchronization Light Load Efficiency Over Current Protection Power Good Soft Start Fixed Spread Spectrum Synchronous Rectification Wettable Flanks Package |
Current Mode | 98 | -40 to 150 | Automotive | VQFN-HR | 14 | Converter | 14VQFN-HR: 14 mm2: 3.5 x 4 (VQFN-HR | 14) |
LM73605-Q1 |
|
3.5 | 36 | 1 | 34 | 5 | 1 | 350 | 2200 | 0.015 |
Enable
Forced PWM Frequency Synchronization Light Load Efficiency Over Current Protection Power Good Pre-Bias Start-Up Synchronous Rectification Tracking Wettable Flanks Package |
Current Mode | 96 | -40 to 125 | Automotive | WQFN | 30 | Converter |