LM60430 Series

3.8-V to 36-V, 3-A, ultra-small synchronous step-down converter

Catalog

3.8-V to 36-V, 3-A, ultra-small synchronous step-down converter

Part	Output Configuration	Voltage - Output (Max)	Current - Output	Operating Temperature [Max]	Operating Temperature [Min]	Synchronous Rectifier	Voltage - Input (Min) [Min]	Voltage - Input (Max) [Max]	Output Type	Mounting Type	Frequency - Switching	Function	Voltage - Output (Min/Fixed)	Number of Outputs	Topology	Supplier Device Package	Package / Case
Texas Instruments LM60430DRPKR	Positive	24 V	3 A	150 °C	-40 °C		3.8 V	36 V	Adjustable	Surface Mount Wettable Flank	1 MHz	Step-Down	1 V	1	Buck	13-WQFN-HR (3x2)	13-PowerWFQFN
Texas Instruments LM60430ARPKR	Positive	24 V	3 A	150 °C	-40 °C		3.8 V	36 V	Adjustable	Surface Mount Wettable Flank	400 kHz	Step-Down	1 V	1	Buck	13-WQFN-HR (3x2)	13-PowerWFQFN

Catalog

3.8-V to 36-V, 3-A, ultra-small synchronous step-down converter

Key Features

• Functional Safety-CapableDocumentation available to aid functional safety system designLow EMI and switching noiseMeets CISPR22 class 5 standardEnhanced QFN package minimizes parasitic inductance and switch node ringingConfigured for rugged industrial applicationsStandard QFN footprint: single large thermal pad and all pins accessible from perimeterPin compatible variants:LM60440(36 V, 4 A)LM60430(36 V, 3 A)Junction temperature range –40°C to +150°CFrequency: 400 kHz, 1 MHzOutput voltage range: 1 V to 24 VHigh efficiency power conversion at all loadsPeak efficiency > 95%90% PFM efficiency at 10-mA, 12 VIN, 5 VOUTLow operating quiescent current of 25 µACreate a custom design using the LM60440 with theWEBENCH®Power DesignerFunctional Safety-CapableDocumentation available to aid functional safety system designLow EMI and switching noiseMeets CISPR22 class 5 standardEnhanced QFN package minimizes parasitic inductance and switch node ringingConfigured for rugged industrial applicationsStandard QFN footprint: single large thermal pad and all pins accessible from perimeterPin compatible variants:LM60440(36 V, 4 A)LM60430(36 V, 3 A)Junction temperature range –40°C to +150°CFrequency: 400 kHz, 1 MHzOutput voltage range: 1 V to 24 VHigh efficiency power conversion at all loadsPeak efficiency > 95%90% PFM efficiency at 10-mA, 12 VIN, 5 VOUTLow operating quiescent current of 25 µACreate a custom design using the LM60440 with theWEBENCH®Power Designer

Description

The LM604x0 regulator is an easy-to-use, synchronous, step-down DC/DC converter that delivers best-in-class efficiency for rugged industrial applications. The LM60430 drives up to 3-A of load current, and the LM60440 is industry’s smallest 4A step-down converter. The LM604x0 is available in an ultra-miniature WQFN package with wettable flanks and a standard QFN pin-out with a thermal pad to enhance thermal performance. This enhanced QFN package features extremely small parasitic inductance and resistance, enabling very high efficiency while minimizing switch node ringing and dramatically reducing EMI. The LM604x0 uses peak-current-mode control to automatically fold back frequency at light load to ensure exceptional efficiency across the entire load range. The low power dissipation paired with a thermally optimized QFN package enables a power dense solution size. In addition the device requires few external components and has a pinout designed for simple PCB layout. The small solution size and feature set of the LM604x0 are designed to simplify implementation for a wide range of end equipment. This device is also available in an AEC-Q100-qualified version. The LM604x0 regulator is an easy-to-use, synchronous, step-down DC/DC converter that delivers best-in-class efficiency for rugged industrial applications. The LM60430 drives up to 3-A of load current, and the LM60440 is industry’s smallest 4A step-down converter. The LM604x0 is available in an ultra-miniature WQFN package with wettable flanks and a standard QFN pin-out with a thermal pad to enhance thermal performance. This enhanced QFN package features extremely small parasitic inductance and resistance, enabling very high efficiency while minimizing switch node ringing and dramatically reducing EMI. The LM604x0 uses peak-current-mode control to automatically fold back frequency at light load to ensure exceptional efficiency across the entire load range. The low power dissipation paired with a thermally optimized QFN package enables a power dense solution size. In addition the device requires few external components and has a pinout designed for simple PCB layout. The small solution size and feature set of the LM604x0 are designed to simplify implementation for a wide range of end equipment. This device is also available in an AEC-Q100-qualified version.