📢 Promotion ends on Mar. 31st! Get FREE SHIPPING for your automotive project! Order now! 🛒



Dual synchronous rectification, 1.5 A, 1.5 MHz adjustable step-down switching regulator

Quantity $ per Unit Savings
1 - 9$2.270%
10 - 24$1.9514%
25 - 99$1.8718%
100 - 249$1.6926%
250 - 499$1.6229%
Contact Sales
In stock
Parameter NameParameter Value
Operating RangeCommercial
Input Voltage Min Volt3.0
Input Voltage Max Volt5.5
Operating Temp Min Celsius-30.0
Operating Temp Max Celsius125.0
Packing TypeTape And Reel
RoHs compliantEcopack2
Package NameQFN12 4x4

The ST2S08B is a dual step-down DC-DC converter optimized for powering low-voltage digital cores in ODD applications and, generally, to replace the high current linear solution when the power dissipation may cause a high heating of the application environment. It provides up to 1.5 A over an input voltage range of 3 V to 5.5 V. A high switching frequency of 1.5 MHz allows the use of tiny surface-mounted components as well as a resistor divider to set the output voltage value. Only an inductor and two capacitors are required. A low output ripple is guaranteed by the current mode PWM topology and the utilization of low ESR SMD ceramic capacitors. The device is thermally protected and current limited. The ST2S08B is available in the QFN12L (4 x 4 mm) package.

Key features
  • Step-down current mode PWM (1.5 MHz) DC-DC converter
  • Adjustable output voltage from 0.8 V
  • 2 % DC output voltage tolerance
  • Synchronous rectification
  • Integrated current limit
  • Inhibit function
  • Soft-start for start delay of 800 μs typ.
  • Typical efficiency: > 80 % at VOUT= 1.2 V
  • 1.5 A output current capability
  • Non-switching quiescent current: max 1.5 mA over temperature range
  • RDS(ON)150 mΩ (typ.)
  • Uses tiny capacitors and inductors
  • Available in QFN12L (4 x 4 mm)