Sky Works


High Voltage Step-Down Regulator

Topologie: Buck
Eingangsspannung (min.): 6.00 V
Eingangsspannung (max.): 25.00 V
Schaltfrequenz (min.): 350.00 kHz
Schaltfrequenz (max.): 650.00 kHz
Ausgang 1: 5.00 V / 2.500 A


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.


  • 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


  Artikel Nr. SPEC Produktserie L
RDC typ.
RDC max.
Version Muster
7447789004 PDF WE-PD SMT-Speicherdrossel 4.7 2.9 3.9 33 35 45 Robust