📢 New offer this month! Get FREE SHIPPING for your automotive project! Order now! 🛒



4 A peak 800 kHz fixed-frequency PWM synchronous step-down demonstration board with enable on/off based on the ST1S40IPHR

Quantity $ per Unit Savings
Contact Sales
In stock
Parameter NameParameter Value
Target ApplicationDC-DC Topologies
Core ProductST1S40IPHR
Input Voltage Min Volt4.0
Input Voltage Max Volt18.0
Packing TypeNot Applicable
RoHs compliantEcopack2
Package NameCARD

The STEVAL-ISA082V1, based on the ST1S40IPHR, is an internally compensated 800 kHz fixed-frequency PWM synchronous stepdown converter evaluation board.

The ST1S40 operates from 4.0 V to 18.0 V input, while it regulates an output voltage as low as 0.8 V and up to VIN (100% duty cycle).

The ST1S40 integrates a 95 mΩ high-side switch and a 69 mΩ synchronous rectifier allowing very high efficiency with very low output voltage.

The peak current mode control with internal compensation delivers a very compact solution with a minimum component count.

The ST1S40 is protected through cycle-by-cycle current limiting in case of overload and is also protected by a current foldback function with frequency reduction in case of short-circuit.

The device is available with an enable on/off function.

Key features
  • Input voltage Vin = 4 V to 18 V
  • Output voltage Vout = 3.3 V
  • Maximum output current: 3 A
  • Switching frequency: 800 kHz
  • Short-circuit protected
  • RoHS compliant