SNVU694A February   2020  – July 2020 LM76005 , LM76005-Q1

 

  1. 1LM76005QEVM User’s Guide
    1.     Trademarks
  2. 2Setup
    1. 2.1 Input/Output (I/O) Connector Description
    2. 2.2 Voltage Setup
    3. 2.3 Operation
  3. 3Schematic
  4. 4Board Layout
  5. 5Bill of Materials
  6. 6Application Curves
  7. 7Revision History

2.3 Operation

For proper operation of the LM76005-Q1, VIN, GND, and VOUT must be properly configured as stated above. In this configuration, the device starts up when power is applied, and the output voltage of the regulator (VOUT) comes up to the proper value. The default setting for output voltage of the LM76005-Q1 is 3.3 V. Other output voltages can be set by replacing the feedback pin resistor dividers R7 and R8; consult the data sheet for proper selection of these resistor values.

The default frequency for the LM76005QEVM is 400 kHz. If other frequencies are desired within the frequency range of 200 kHz and 500 kHz, the RT resistor value can be changed. See the LM76005-Q1 3.5-V to 60-V, 5-A Synchronous Step-Down Voltage Regulator Data Sheet for proper selection of the RT resistor. Change inductor L2 and total output capacitance for proper control loop operation.