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TC105

PFM/PWM Step-Down DC/DC Converter

Status: In Production

Features:

  • 57 µA (Typ) Supply Current
  • 1A Output Current
  • 0.5 µA Shutdown Mode
  • 300 KHz Switching Frequency for Small Inductor Size
  • Programmable Soft-Start
  • 92% Typical Efficiency
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

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.

Additional Features
    • 57 µA (Typ) Supply Current
    • 1A Output Current
    • 0.5 µA Shutdown Mode
    • 300 KHz Switching Frequency for Small Inductor Size
    • Programmable Soft-Start
    • 92% Typical Efficiency

Documents

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Data Sheet

02/05/2013
184KB

Development Environment

  • Demo & Evaluation Boards
  • Application Examples
Demo & Evaluation Boards
Voltage Supervisor SOT23-5/6 Evaluation Board
Voltage Supervisor SOT23-5/6 Evaluation Board ( VSUPEV2 )

This Blank PCB allows the system designer to quickly evaluate the operation of Microchip Technology’s Voltage Supervisors and Voltage Detectors in the SOT-23-5 (5-pin) and SOT-23-6 (6-pin) packages. This PCB supports many Microchip device families, including the Nonvolitile Digital Potentiometer and PIC10F2xx devices.

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
TC105253ECTTR
0.016000
0.049000
5
SOT-23
 
Matte Tin
e3
TC105303ECTTR
0.016000
0.049000
5
SOT-23
 
Matte Tin
e3
TC105333ECTTR
0.016000
0.049000
5
SOT-23
 
Matte Tin
e3
TC105503ECTTR
0.016000
0.049000
5
SOT-23
 
Matte Tin
e3
TC1054-1.8VCT713
0.016000
0.049000
5
SOT-23
 
Matte Tin
e3
TC1054-2.5VCT713
0.016000
0.049000
5
SOT-23
 
Matte Tin
e3
TC1054-2.6VCT713
0.016000
0.049000
5
SOT-23
 
Matte Tin
e3
TC1054-2.7VCT713
0.016000
0.049000
5
SOT-23
 
Matte Tin
e3
TC1054-2.85VCT713
0.016000
0.049000
5
SOT-23
 
Matte Tin
e3
TC1054-3.0VCT713
0.016000
0.049000
5
SOT-23
 
Matte Tin
e3
TC1054-3.3VCT713
0.016000
0.049000
5
SOT-23
 
Matte Tin
e3
TC1054-3.6VCT713
0.016000
0.049000
5
SOT-23
 
Matte Tin
e3
TC1054-4.0VCT713
0.016000
0.049000
5
SOT-23
 
Matte Tin
e3
TC1054-4.2VCT713
0.016000
0.049000
5
SOT-23
 
Matte Tin
e3
TC1054-5.0VCT713
0.016000
0.049000
5
SOT-23
 
Matte Tin
e3
TC1055-1.8VCT713
0.016000
0.049000
5
SOT-23
 
Matte Tin
e3
TC1055-2.5VCT713
0.016000
0.049000
5
SOT-23
 
Matte Tin
e3
TC1055-2.6VCT713
0.016000
0.049000
5
SOT-23
 
Matte Tin
e3
TC1055-2.7VCT713
0.016000
0.049000
5
SOT-23
 
Matte Tin
e3
TC1055-2.85VCT713
0.016000
0.049000
5
SOT-23
 
Matte Tin
e3
TC1055-2.8VCT713
0.016000
0.049000
5
SOT-23
 
Matte Tin
e3
TC1055-3.0VCT713
0.016000
0.049000
5
SOT-23
 
Matte Tin
e3
TC1055-3.3VCT713
0.016000
0.049000
5
SOT-23
 
Matte Tin
e3
TC1055-3.6VCT713
0.016000
0.049000
5
SOT-23
 
Matte Tin
e3
TC1055-4.0VCT713
0.016000
0.049000
5
SOT-23
 
Matte Tin
e3
TC1055-5.0VCT713
0.016000
0.049000
5
SOT-23
 
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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