Wide VIN 500mA Synchronous Buck Regulator

Topologie: Buck
Eingangsspannung (min.): 3.00 V
Eingangsspannung (max.): 36.00 V
Schaltfrequenz (min.): 300.00 kHz
Schaltfrequenz (max.): 2000.00 kHz
Ausgang 1: 3.30 V / 0.500 A
Ausgang 2: 2.50 V / 0.500 A
Ausgang 3: 1.80 V / 0.500 A
Ausgang 4: 5.00 V / 0.500 A

Erstveröffentlichung am 15.07.2013, Version 4


The ISL85415 is a 500mA Synchronous buck regulator with an input range of 3V to 36V. It provides an easy to use, high efficiency low BOM count solution for a variety of applications. The ISL85415 integrates both high-side and low-side NMOS FET's and features a PFM mode for improved efficiency at light loads. This feature can be disabled if forced PWM mode isdesired. The part switches at a default frequency of 500kHzbut may also be programmed using an external resistor from 300kHz to 2MHz. The ISL85415 has the ability to utilize internal or external compensation. By integrating both NMOS devices and providing internal configuration options, minimalexternal components are required, reducing BOM count and complexity of design. With the wide VIN range and reduced BOM the part provides aneasy to implement design solution for a variety of applications while giving superior performance. It will provide a very robust design for high voltage Industrial applications as well as an efficient solution for battery powered applications. The part is available in a small Pb free 4mmx3mm DFN plasticpackage with an operation temperature range of -40°C to +125°C


  • Wide input voltage range 3V to 36V
  • Synchronous Operation for high efficiency
  • No compensation required
  • Integrated High-side and Low-side NMOS devices
  • Selectable PFM or forced PWM mode at light loads
  • Internal fixed (500kHz) or adjustable Switching frequency300kHz to 2MHz
  • Continuous output current up to 500mA
  • Internal or external soft-start
  • Minimal external components required
  • Power-good and enable functions available.


  Artikel Nr. SPEC Produktserie L
RDC typ.
RDC max.
Version Muster
74408943220 PDF WE-SPC SMT-Speicherdrossel 22 1.1 1.4 0.185 0.213 19 SMT

Weitere Anwendungen und Artikel von Würth Elektronik zu diesem IC

  • ISL85415
    Topologie: Buck, Eingangsspannung (min.): 3.00 V, Eingangsspannung (max.): 36.00 V, Schaltfrequenz (min.): 300.00 kHz, Schaltfrequenz (max.): 2000.00 kHz, Ausgang 1: 12.00 V / 0.300 A