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Manufacturer Part #

ST1S40IDR

ST1S40 Series 18 V 3 A DC SMT Step-Down Switching Regulator - SOIC-8

Product Specification Section
STMicroelectronics ST1S40IDR - Technical Attributes
Attributes Table
Topology: Buck
Input Voltage: 4V to 18V
Output Current-Max: 3A
Output Voltage Range: 0.8V
Output Type: Adjustable
Switching Frequency-Max: 850kHz
Operating Temp Range: -40°C to +150°C
Duty Cycle-Max: 100%
No. of Outputs: 1
Quiescent Current: 2.5µA
Storage Temperature Range: -55°C to +150°C
Load Regulation (%): 0.5%
Package Style:  SOIC-8
Mounting Method: Surface Mount
Features & Applications

The ST1S40IDR is an internally compensated 850 kHz fixed-frequency PWM synchronous stepdown regulator. Available in a SOIC-8 package.

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

Features:

  • 3 A DC output current
  • 4.0 V to 18 V input voltage
  • Output voltage adjustable from 0.8 V
  • 850 kHz switching frequency
  • Internal soft-start
  • Integrated 95 mΩ and 69 mΩ Power MOSFETs
  • All ceramic capacitor
  • Enable
  • Cycle-by-cycle current limiting
  • Current fold back short-circuit protection

Applications:

  • μP/ASIC/DSP/FPGA core and I/O supplies
  • Point of load for: STB, TVs, DVD
  • Optical storage, hard disk drive, printers, audio/graphic cards
Pricing Section
Global Stock:
42,500
Germany (Online Only):
42,500
On Order:
0
Factory Stock:Factory Stock:
0
Factory Lead Time:
12 Weeks
Minimum Order:
2500
Multiple Of:
2500
Total
$2,162.50
USD
Quantity
Web Price
2,500
$0.865
5,000+
$0.83