SNVA490B September   2011  – December 2021 LMR12010

 

  1.   Trademarks
  2. 1Introduction
  3. 2Features
  4. 3Enable Operation
  5. 4Adjusting the Output Voltage
  6. 5Test Setup
  7. 6Typical Performance Characteristics
  8. 7Layout
  9. 8Additional Circuit Configuration Schematics
  10. 9Revision History

4 Adjusting the Output Voltage

The output voltage can be changed from 1.8V to another voltage by adjusting the feedback resistors using Equation 1:

Equation 1. VOUT = VFB(1 + (RFBT / RFBB))

where

  • VFB is 0.8 V.

For more information on component selection and features, see the device-specific data sheet.

GUID-F499F966-425B-4042-8D64-9B4F0929D81D-low.gifFigure 4-1 LMR12010 Demo Board Top View
GUID-E8B62AA1-0BD2-484D-A609-596D7BA00205-low.gifFigure 4-2 LMR12010 Demo Board Bottom View
GUID-0722EE9F-5BD9-4BEA-8006-26E6D0405391-low.gif Figure 4-3 LMR12010Y Demo Board Schematic
Table 4-1 Bill of Materials (BOM) for LMR12010Y
Part ID Part Value Manufacturer Part Number Package Type
U1 1-A Buck Regulator Texas Instruments LMR12010 Thin SOT23-6
C1, Input Cap 10 µF, 10 V, X5R Murata GRM316R61A475KE19D 1206
C2, Output Cap 10 µF, 6.3 V, X5R Murata GRM319R60J106KE01D 1206
C3, Boost Cap 0.01 µF Vishay VJ0805Y103KXAAC 0805
D1, Catch Diode 0.45 Vf Schottky 1 A, 20VR Vishay MBRA120TRPBF SMA
D2, Boost Diode 1 Vf at 50-mA Diode Diodes, Inc. 1N4148W-7-F SOD-123
L1 2.7 µH, 1.8 A, 33 mΩ TDK VLCF5028T-2R7N1R8-2 6028
R1 12.4 kΩ, 1% Vishay CRCW080512K4FKEA 0805
R2 10 kΩ, 1% Vishay CRCW080510K0FKEA 0805
R3 0 Ω Vishay CRCW08050000Z0EA 0805
D3, C4, R4, R5 Open