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.

• 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
• APPLICATIONS
  • Notebook Computers
  • Mobile Digital Consumer Products

• Output options
• Fixed Output
• Iout (Max) (A)
• 0.1
• Vin (Max) (V)
• 28
• Vin (Min) (V)
• 4.5
• Vout (Max) (V)
• 3.3
• Vout (Min) (V)
• 3.3
• Fixed output options (V)
• 3.3, 5
• Iq (Typ) (mA)
• 0.0354
• Thermal resistance θJA (°C/W)
• 80
• Rating
• Catalog
• Load capacitance (Min) (F)
• 10
• Regulated outputs (#)
• 3
• Features
• Enable
• Accuracy (%)
• 4
• Dropout voltage (Vdo) (Typ) (mV)
• 400
• Operating temperature range (C)
• -40 to 85

TPS51103的完整型号有：TPS51103DRCR、TPS51103DRCT，以下是这些产品的关键参数及官网采购报价：

TPS51103DRCR，工作温度：-40 to 85，封装：VSON (DRC)-10，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网TPS51103DRCR的批量USD价格：.968（1000+）

TPS51103DRCT，工作温度：-40 to 85，封装：VSON (DRC)-10，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网TPS51103DRCT的批量USD价格：1.162（1000+）