Skyworks AAT1189

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

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

More information

• Datasheet
• IC product information