L7986:3A step-down switching regulator

The L7986/A is a step-down switching regulator with a 3.7 A (minimum) current limited embedded power MOSFET, so it is able to deliver up to 3 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 QFN and the HSOP packages with exposed pad allow reducing the RthJAdown to 60 °C/W and 40 °C/W respectively.

Key Features

  • 3 A DC output current
  • 4.5 V to 38 V input voltage
  • Output voltage adjustable from 0.6 V
  • 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
  • VFQFPN 3 x 3 - 10L and HSOP8 package
产品规格
DescriptionVersionSize
DS8735: 3 A step-down switching regulator6.01 MB
Design Notes & Tips
DescriptionVersionSize
DN0011: ST1S03 alternative topology: Using a buck in a negative buck-boost configuration1.1359 KB
HW Model & CAD Libraries
DescriptionVersionSize
X798X Pspice model2 MB
宣传册
DescriptionVersionSize
DC-DC converters557 KB
手册
DescriptionVersionSize
Brochure Power management guide05.20167 MB
解决方案评估工具
型号制造商Description
STEVAL-ISA099V13 A step-down switching demonstration board based on the L7986 in DFN10 package
STEVAL-ISA100V13 A step-down switching demonstration board based on the L7986A in HSOP8 package
样片和购买
型号PackagePacking TypeUnit Price (US$) *QuantityECCN (EU)ECCN (US)Country of Origin
L7986ATRPowerSO-8Tape And Reel0.8041000NECEAR99CHINA
L7986TRVDFPN 10 3x3x1.0Tape And Reel0.7911000NECEAR99PHILIPPINES
L7986APowerSO-8Tube0.8041000NECEAR99CHINA
质量和可靠性
型号PackageGradeRoHS Compliance GradeMaterial Declaration**
L7986ATRPowerSO-8IndustrialEcopack2md_61-wspc-hsop-wspc-8l-wspc-.150_s661-wspc-ua50ba5.pdf
md_61-wspc-hsop-wspc-8l-wspc-.xml
L7986TRVDFPN 10 3x3x1.0IndustrialEcopack2md_wq-wspc-vdfpn-wspc-3x3x1.0-wspc-10-wspc-pitch-wspc-0.50_a6wqua50ba5-wspc-(l7986).pdf
md_wq-wspc-vdfpn-wspc-3x3x1.xml
L7986APowerSO-8IndustrialEcopack2md_61-wspc-hsop-wspc-8l-wspc-.150-wspc-pitch-wspc-1.27-wspc-expopad_s661ua50bb5-wspc-(l7986a)-wspc-wcp-wspc-ver2_signed.pdf
md_61-wspc-hsop-wspc-8l-wspc-.150-wspc-pitch-wspc-1.27-wspc-expopad_s661ua50bb5-wspc-(l7986a)-wspc-wcp-wspc-ver2.xml
3 A step-down switching regulator L7986
ST1S03 alternative topology: Using a buck in a negative buck-boost configuration L5986
ST1S03 alternative topology: Using a buck in a negative buck-boost configuration L7985
ST1S03 alternative topology: Using a buck in a negative buck-boost configuration L7985
Very low drop voltage regulators with inhibit KFXX
md_61-wspc-hsop-wspc-8l-wspc-.150_s661-wspc-ua50ba5.pdf L7986
md_61-wspc-hsop-wspc-8l-wspc-.xml A5973AD
md_wq-wspc-vdfpn-wspc-3x3x1.0-wspc-10-wspc-pitch-wspc-0.50_a6wqua50ba5-wspc-(l7986).pdf L7986
md_wq-wspc-vdfpn-wspc-3x3x1.xml L7985
md_61-wspc-hsop-wspc-8l-wspc-.150-wspc-pitch-wspc-1.27-wspc-expopad_s661ua50bb5-wspc-(l7986a)-wspc-wcp-wspc-ver2_signed.pdf L7986
md_61-wspc-hsop-wspc-8l-wspc-.150-wspc-pitch-wspc-1.27-wspc-expopad_s661ua50bb5-wspc-(l7986a)-wspc-wcp-wspc-ver2.xml L7986