R7985A:2 A step-down switching regulator

The R7985A is a step-down switching regulator with a 2.5 A (minimum) current limited embedded power MOSFET, so it is able to deliver up to 2 A current to the load depending on the application conditions.

The input voltage can range from 4.5 V to 38 V, while the output voltage can be set starting from 0.6 V to VIN.

Requiring a minimum set of external components, the device includes an internal 250 kHz switching frequency oscillator that can be externally adjusted up to 1 MHz. The large ambient temperature range makes it ideal for aerospace and defense applications.

The HSOP8 package with exposed pad allows the reduction of Rth(JA)down to 40 °C/W.

Key Features

  • General features
    • 2 A DC output current
    • 4.5 V to 38 V input voltage
    • Output voltage adjustable from 0.6 V
    • Large ambient temperature range: -40 °C to 125 °C
    • 250 kHz switching frequency, programmable up to 1 MHz
    • Internal soft-start and enable
    • Low dropout operation: 100% duty cycle
    • Voltage feed-forward
    • Zero load current operation
    • Overcurrent and thermal protection
    • HSOP8 package
  • Aerospace and defense features
    • Suitable for use in aerospace and defense applications
    • Dedicated traceability and part marking
    • Production parts approval documents available
    • Adapted extended life time and obsolescence management
    • Extended product change notification process
    • Designed and manufactured to meet sub-ppm quality goals
    • Advanced mold and frame designs for superior resilience in harsh environments (acceleration, EMI, thermal, humidity)
    • Extended screening capability on request
产品规格
DescriptionVersionSize
DS10635: 2 A step-down switching regulator for aerospace applications1.0835 KB
简报
DescriptionVersionSize
Defense Grade DC-DC Switching Converter candidate list1 MB
样片和购买
型号PackagePacking TypeUnit Price (US$) *QuantityJunction Temperature (°C) (min)Junction Temperature (°C) (max)ECCN (EU)ECCN (US)Country of Origin
R7985ATRPowerSO-8Tape And Reel---40125NECEAR99-
R7985APowerSO-8Tube---40125NECEAR99-
质量和可靠性
型号PackageGradeRoHS Compliance GradeMaterial Declaration**
R7985ATRPowerSO-8DefenseEcopack2
R7985APowerSO-8DefenseEcopack2
2 A step-down switching regulator for aerospace applications R7985A
3 A step-down switching regulator for aerospace applications R7986A