text.skipToContent text.skipToNavigation


2.7-5.5V Dual In/Single Out MOSFET, 0.5A Main/0.1A Aux Input, Act-High Enable


Package | PIN: DBV | 5
Temp: M (-55 to 125)
Carrier: Cut Tape
Qty Price
1-9 $3.08
10-24 $2.76
25-99 $2.57
100-249 $2.23
250-499 $2.06
500-749 $1.73
750-999 $1.42
1000+ $1.30


  • Dual-Input, Single-Output MOSFET Switch With
    No Reverse Current Flow (No Parasitic Diodes)
  • IN1: 250-mΩ, 500-mA N-Channel; 18-µA Supply Current
  • IN2: 1.3-mΩ, 100-mA P-Channel; 0.75-µA Supply
    Current (VAUX Mode)
  • Advanced Switch Control Logic
  • CMOS and TTL Compatible Enable Input
  • Controlled Rise, Fall, and Transition Times
  • 2.7-V to 5.5-V Operating Range
  • SOT-23-5 Package
  • 2-kV Human Body Model, 750-V Charged Device Model,
    200-V Machine-Model ESD Protection
  • Supports Defense, Aerospace, and Medical Applications
    • Controlled Baseline
    • One Assembly and Test Site
    • One Fabrication Site
    • Available in Military (–55°C to 125°C)
      Temperature Range
    • Extended Product Life Cycle
    • Extended Product-Change Notification
    • Product Traceability

Texas Instruments  TPS2105MDBVREP

The TPS2105 is a dual-input, single-output power switch designed to provide uninterrupted output voltage when transitioning between two independent power supplies. Both devices combine one N-channel (250 mΩ) and one P-channel (1.3-Ω) MOSFET with a single output. The P-channel MOSFET (IN2) is used with auxiliary power supplies that deliver lower current for standby modes. The N-channel MOSFET (IN1) is used with a main power supply that delivers higher current required for normal operation. Low on-resistance makes the N-channel the ideal path for higher main supply current when power-supply regulation and system voltage drops are critical. When using the P-channel MOSFET, quiescent current is reduced to 0.75 µA to decrease the demand on the standby power supply. The MOSFETs in the TPS2105 do not have the parasitic diodes, typically found in discrete MOSFETs, thereby preventing back-flow current when the switch is off.