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LM46000
SNVSA45B – JUNE 2014 – RE...
Product Folder
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Technical Documents
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LM46000
SNVSA45B – JUNE 2014 – REVISED MARCH 2018
LM46000 3.5-V to 60-V, 0.5-A Synchronous Step-Down Voltage Converter
1 Features
1 24-µA Quiescent Current in Regulation High Efficiency at Light Load (DCM and PFM) Meets EN55022/CISPR 22 EMI standards Integrated Synchronous Rectification Adjustable Frequency Range: 200 kHz to 2.2 MHz
(500 kHz default) Frequency Synchronization to External Clock Internal Compensation Stable With Almost Any Combination of Ceramic,
Polymer, Tantalum, and Aluminum Capacitors Power-Good Flag Soft-Start into Prebiased Load Internal Soft Start: 4.1 ms Extendable Soft-Start Time by External Capacitor Output Voltage Tracking Capability Precision Enable to Program System UVLO Output Short-Circuit Protection With Hiccup Mode Overtemperature Thermal Shutdown Protection Create a Custom Design Using the LM46000 With
the WEBENCH® Power Designer
2 Applications
Industrial Power Supplies Telecommunications Systems Sub-AM Band 12-V and 24-V Automotive Commercial Vehicle Power Supplies General Purpose Wide VIN Regulation High Efficiency Point-Of-Load Regulation
Simplified Schematic
3 Description
The LM46000
regulator is an easy-to-use synchronous step-down DC-DC converter capable of driving up to 500 mA of load current from an input voltage range of 3.5 V to 60 V. The LM46000 provides exceptional efficiency, output accuracy and dro...