TC105503ECTTR
ActivePFM/PWM STEP-DOWN DC/DC CONVERTER
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TC105503ECTTR
ActivePFM/PWM STEP-DOWN DC/DC CONVERTER
Technical Specifications
Parameters and characteristics for this part
| Specification | TC105503ECTTR |
|---|---|
| Clock Sync | False |
| Control Features | Enable |
| Duty Cycle (Max) [Max] | 100 % |
| Frequency - Switching | 300 kHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Phases | 1 |
| Output Type | Transistor Driver |
| Package / Case | SC-74A, SOT-753 |
| Supplier Device Package | SOT-23-5 |
| Synchronous Rectifier | False |
| Topology | Buck |
| Voltage - Supply (Vcc/Vdd) [Max] | 10 V |
| Voltage - Supply (Vcc/Vdd) [Min] | 2.2 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tape & Reel (TR) | 3000 | $ 2.59 | |
| Microchip Direct | T/R | 1 | $ 3.41 | |
| 25 | $ 2.85 | |||
| 100 | $ 2.59 | |||
| 1000 | $ 2.15 | |||
| 5000 | $ 1.99 | |||
| 10000 | $ 1.85 | |||
TC105503 Series
PFM/PWM Step-Down DC/DC Converter
| Part | Clock Sync | Function | Output Type | Output Phases | Duty Cycle (Max) [Max] | Synchronous Rectifier | Frequency - Switching | Topology | Voltage - Supply (Vcc/Vdd) [Min] | Voltage - Supply (Vcc/Vdd) [Max] | Output Configuration | Control Features | Mounting Type | Number of Outputs | Package / Case | Supplier Device Package | Operating Temperature [Max] | Operating Temperature [Min] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Microchip Technology TC105503ECTTR | Step-Down | Transistor Driver | 1 | 100 % | 300 kHz | Buck | 2.2 V | 10 V | Positive | Enable | Surface Mount | 1 | SC-74A, SOT-753 | SOT-23-5 | 85 °C | -40 °C |
Description
General part information
TC105503 Series
The TC105 is a step-down (Buck) switching controller that furnishes output currents of up to 1A (max) while delivering a typical efficiency of 92%. The TC105 normally operates in pulse width modulation mode (PWM), but automatically switches to pulse frequency modulation (PFM) at low output loads for greater efficiency. Oscillator frequency is 300 KHz, allowing use of small (22 µH) inductors. Supply current draw is only 102 µA (max), and is reduced to less than 0.5 µA when the SHDN input is brought low. Regulator operation is suspended during shutdown. The TC105 accepts a maximum input voltage of 10V. The TC105 is housed in a tiny 5-pin SOT-23A package, occupies minimum board space, and is ideal for a wide range of applications.
Documents
Technical documentation and resources