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IC manufacturers Sky Works

IC manufacturers (83)

Sky Works AAT1189

High Voltage Step-Down Regulator

Overview

TopologyBuck Converter
Input voltage6-25 V
Switching frequency350-650 kHz
Output 15 V / 2.5 A

Description

The AAT1189 is a single output step-down (Buck) DC output regulator with an integrated high side MOSFET. The input range is 6V to 24V making it the ideal power IC solution for consumer communications equipment operatingfrom a low cost AC/DC adapter with 12V output.

The step-down regulator provides up to 2.5A output current in a small package. 490kHz fixed switching frequency allows small L/C filtering components.

Voltage mode control allows for optimum performance across the entire output voltage and load range.

The controller includes programmable over-current, integrated soft-start and over-temperature protection.

The AAT1189 is available in the Pb-free, low profile 16-pin TDFN34 package. The rated operating temperature range is -40C to 85C.

Features

  • VIN = 6.0 to 24.0V
  • VOUT Adjustable from 1.5V to 5.5V
  • IOUT up to 2.5A
  • Small Solution Size
  • Low-Cost Non-Synchronous Solution
  • Shutdown Current <35μA
  • High Switching Frequency
  • Voltage Mode Control
  • PWM Fixed Frequency for Lowest Noise
  • Programmable Over-Current Protection
  • Over-Temperature Protection
  • Internal Soft Start
  • Low Profile 3x4mm TDFN-16 Packages
  • -40°C to 85°C Temperature Range

Typical applications

  • Notebook Computers
  • DSL and Cable Modems
  • Satellite Set Top Box
  • Wireless LAN Systems

Products

Order Code Data­sheet Simu­lation Downloads Product seriesL
(µH)
IR
(A)
ISAT
(A)
RDC
(mΩ)
RDC max.
(mΩ)
fres
(MHz)
SizeVersion Samples
7447789004SPEC
8 files WE-PD SMT Power Inductor 4.7 2.9 3.9 33 35 45 7332 Robust
Order Code Data­sheet Simu­lation
7447789004SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Product seriesL
(µH)
IR
(A)
ISAT
(A)
RDC
(mΩ)
RDC max.
(mΩ)
fres
(MHz)
SizeVersion Samples