ams AG - global leader in the design and manufacture of high performance analog ICs (integrated circuits)

AS7620 Buck Converter

HV DC-DC step-down converter, 32V, with dual power monitor

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The AS7620 is a high-efficiency, high-voltage, hysteretic step-down DC-DC converter capable to drive 500mA (typical, 650mA peak) at 1.2V to VIN output with up to 90% efficiency. The devise operates on wide input voltage range, from 3.6V up to 32V.  Low IQ current of 30 μA and on-demand switching extends the battery life on low load applications.

Key Features

  • Input 3.6V to 32V
  • 500mA (typ) @1.2V to Vin
  • Up to 90% efficiency

Key Benefits

  • 24V industrial supply rail
  • Flexible use
  • Good thermal performance

Product Facts

Input voltage [V] 3.6 to 32
Output voltage [V] AS7620-A: 1.2 to Vin
AS7620-B: 3.3
Output current [mA] 500 (typ)
Efficiency [%] 90 (max)
Iq [µA] 30 (typ)
Architecture Hysteretic, async
fmax [kHz] >250
Enable/SHDN [ ]
Reset [POK]
Features Early power fail warning,
100% duty cycle
Package QFN-12 (4x4 mm)

Additional Information

  • Industrial 24VDC applications like PLCs and robotics
  • Home Security and Building Control applications
  • Solidstate utility meters
  • Signage and LED column power
  • Sensor interfaces