TPS563249 17-V, 3-A, constant 1.4-MHz synchronous step-down voltage regulator | TI.com

TPS563249 (ACTIVE) 17-V, 3-A, constant 1.4-MHz synchronous step-down voltage regulator

 

Description

The TPS563249 is a simple, easy-to-use, 3 A synchronous step-down converter in SOT-23 package.

The device is optimized to operate with minimum external component counts and also optimized to achieve low standby current.

This switching regulator employs D-CAP3 mode control providing a fast transient response and supporting both low-equivalent series resistance (ESR) output capacitors such as specialty polymer and ultra-low ESR ceramic capacitors with no external compensation components.

TPS563249 operates in Forced Continuous Conduction Mode (FCCM), which maintains fixed 1.4 MHz switching frequency during light load operation and eliminates system interference. The TPS563249 is available in a 6-pin 1.6-mm × 2.9-mm SOT (DDC) package, and specified from a –40°C to 125°C junction temperature.

Features

  • 3-A Converter Integrated 70-mΩ and 30-mΩ FETs
  • D-CAP3™ Mode Control with Fast Transient Response
  • Input Voltage Range: 4.5 V to 17 V
  • Output Voltage Range: 0.6 V to 7 V
  • Forced Continuous Conduction Mode
  • Constant 1.4-MHz Switching Frequency
  • Low Shutdown Current Less than 10 µA
  • 1% Feedback Voltage Accuracy (25ºC)
  • Startup from Pre-Biased Output Voltage
  • Cycle-by-Cycle Overcurrent Limit
  • Hiccup-mode Overcurrent Protection
  • Non-Latch UVP and TSD Protections
  • Fixed Soft Start: 1.7 ms

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  Min   Max Range
Vin  V 4.5 to 17.0V
Vout  V 0.6 to 7V
Iout  A ≤ 3A
Ambient Temp  °C -40 to 125°C

Parametrics

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Part number Order Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Iout (Max) (A) Regulated outputs (#) Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Features Control mode Operating temperature range (C) Rating Package Group Type Package size: mm2:W x L (PKG)
TPS563249 Order now 4.5     17     0.6     7     3     1     1400     1400     0.26     Enable
Forced PWM
Over Current Protection
Pre-Bias Start-Up
Synchronous Rectification
UVLO Fixed
Soft Start Fixed    
D-CAP3     -40 to 125     Catalog     SOT-23-THIN | 6     Converter     6SOT-23-THIN: 5 mm2: 1.6 x 2.9 (SOT-23-THIN | 6)