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TC120 - PWM/PFM Step-Down Combination Regulator/Controller

Description

TC120 is a 300kHz PFM/PWM step-down (Buck) DC/ DC regulator/controller combination for use in systems operating from two or more cells, or in line-powered applications.

It uses PWM as the primary modulation scheme, but automatically converts to PFM at low output loads for greater efficiency.

Features

  • Internal Switching Transistor Supports 600mA Output Current.
  • External Switching Transistor Control for Output Currents of 2A+.
  • 300kHz Oscillator Frequency Supports Small Inductor Size.
  • Short Circuit Protection.
  • Built-In Undervoltage Lockout.
  • 95% Typical Efficiency.
  • Automatic Switchover to Current-Saving PFM Mode at Low Output Loads.
  • Automatic Output Capacitor Discharge While in Shutdown.
  • Programmable Soft-Start.

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Datasheet preview – TC120

Datasheet Details

Part number TC120
Manufacturer Microchip Technology
File Size 436.67 KB
Description PWM/PFM Step-Down Combination Regulator/Controller
Datasheet download datasheet TC120 Datasheet
Additional preview pages of the TC120 datasheet.

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Full PDF Text Transcription

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TC120 PWM/PFM Step-Down Combination Regulator/Controller Features • Internal Switching Transistor Supports 600mA Output Current • External Switching Transistor Control for Output Currents of 2A+ • 300kHz Oscillator Frequency Supports Small Inductor Size • Short Circuit Protection • Built-In Undervoltage Lockout • 95% Typical Efficiency • Automatic Switchover to Current-Saving PFM Mode at Low Output Loads • Automatic Output Capacitor Discharge While in Shutdown • Programmable Soft-Start • Power-Saving Shutdown Mode • Small 8-Pin SOP Package Package Type 8-Pin SOP VIN 1 EXTW 2 CPC 3 SHDN/SS 4 8 LX EXT GND SENSE TC120 7 6 5 General Description TC120 is a 300kHz PFM/PWM step-down (Buck) DC/ DC regulator/controller combination for use in systems operating from two or more cells, or in line
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