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reference designTS30111

Semtech TS30111

High Efficiency 700mA Current-Mode Synchronous Buck DC/DC Converter, 1MHz

Overview

TopologyBuck Converter
Input voltage4.5-16 V
Output 12.5 V / 0.7 A
IC revision1.0

Description

The TS30111 is a DC/DC synchronous switching regulator with fully integrated power switches, internal compensation, and full fault protection. The switching frequency of 1MHz enables the use of small filter components resulting in minimal board space and reduced BOM costs.

The TS30111 utilizes current mode feedback in normal regulation PWM mode. When the regulator is placed in standby (EN is low), the device drawsless than 10uA quiescent current.

The TS30111 integrates a wide range of protection circuitry including input supply under-voltage lockout, output voltage soft start, current limit, andthermal shutdown.

The TS30111 includes supervisory reporting through the PG (Power Good) open drain output to interface other components in the system.

Features

  • Fixed output voltage choices: 1.5V, 1.8V, 2.5V, 3.3V, and 5V Adjustable version output voltage range: 0.8V to 5V
  • Wide input voltage range 4.5V to 16V (18V AbsMax)
  • 1MHz +/- 10% fixed switching frequency
  • Continuous output current: 700mA
  • High efficiency – up to 90%
  • Current mode PWM control with PFM mode for improved light load efficiency
  • Voltage supervisor for VOUT reported at the PG pin
  • Input supply under voltage lockout
  • Soft start for controlled startup with no overshoot
  • Full protection for over-current, over-temperature, and VOUT over-voltage
  • Less than 10uA in standby mode
  • Low external component count

Typical applications

  • On-card switching regulators
  • Set-top box, DVD, LCD, LED supply
  • Industrial power supplies

More information

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L(µH)
IR(A)
ISAT(A)
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fres(MHz)
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744045003
SPECWE-LQ SMT Inductor, 3.3 µH, 1.4 A
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-LQ SMT Inductor
Inductance3.3 µH
Rated Current1.4 A
Saturation Current2.7 A
DC Resistance0.13 Ω
Self Resonant Frequency58 MHz
Q-Factor45 
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