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3.5 - 60V, 500mA Synchronous Step-Down Voltage Converter


Package | PIN: PWP | 16
Temp: Q (-40 to 125)
Carrier: Cut Tape
Qty Price
1-9 $4.03
10-24 $3.62
25-99 $3.37
100-249 $2.96
250-499 $2.77
500-749 $2.36
750-999 $1.99
1000+ $1.90


  • 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

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Texas Instruments  LM46000PWPT

The LM46000 regulator is an easy-to-use synchronous step-down DC-DC converter capable ofdriving up to 500 mA of load current from an input voltage range of 3.5 V to 60 V. The LM46000provides exceptional efficiency, output accuracy and dropout voltage in a very small solution size.An extended family is available in 1 A and 2 A load current options in pin-to-pin compatiblepackages. Peak current mode control is employed to achieve simple control loop compensation andcycle-by-cycle current limiting. Optional features such as programmable switching frequency,synchronization, power-good flag, precision enable, internal soft start, extendable soft start, andtracking provide a flexible and easy-to-use platform for a wide range of applications.Discontinuous conduction and automatic frequency modulation at light loads improve light loadefficiency. The family requires few external components and pin arrangement allows simple, optimumPCB layout. Protection features include thermal shutdown, VCC undervoltagelockout, cycle-by-cycle current limit, and output short-circuit protection. The LM46000 device isavailable in the 16-pin leaded HTSSOP (PWP) package (6.6 mm × 5.1 mm × 1.2 mm) with0.65-mm lead pitch. Pin-to-pin compatible with LM46001, LM46002, LM43603, LM43602, LM43601, andLM43600.