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Integrated LDO with Switchover Circuit for Notebook Computers


Package | PIN: DRC | 10
Temp: I (-40 to 85)
Carrier: Cut Tape
Qty Price
1-9 $2.12
10-24 $1.91
25-99 $1.78
100-249 $1.56
250-499 $1.46
500-749 $1.24
750-999 $1.05
1000+ $1.00


  • Wide Input Voltage Range: 4.5 V to 28 V
  • 5-V/3.3-V, 100-mA, LDO Output
  • Glitch Free Switch Over Circuit
  • Always-On 3.3-V, 5-mA LDO Output for RTC
  • 250 kHz Clock Output for Charge Pump
  • Thermal Shutdown (Non-latch)
  • 10Ld QFN (DRC) Package
    • Notebook Computers
    • Mobile Digital Consumer Products

Texas Instruments  TPS51103DRCR

The TPS51103 integrates three LDOs. The 5-V and 3.3-V LDOs are both rated at 100 mA and also include a glitch-free switch-over feature allowing for optimized battery life. An additional 3.3-V LDO is designed to provide an always on power output for the real time clock (RTC). The TPS51103 integrates a clock output to use with an external charge pump. The TPS51103 offers an innovative solution for optimizing the complex and multiple power rails typically found in a Notebook Computer. The TPS51103 is available in the 10-pin QFN package and is specified from –40°C to 85°C.