L7980:2 A step-down switching regulator

The L7980 device 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 28 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

  • 2 A DC output current
  • 4.5 V to 28 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 - 8L and HSOP8 package
产品规格
DescriptionVersionSize
DS5974: 2 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
宣传册
DescriptionVersionSize
L7980: switching regulator for LED lighting2.1232 KB
手册
DescriptionVersionSize
Brochure Power management guide05.20167 MB
样片和购买
型号PackagePacking TypeUnit Price (US$) *QuantityECCN (EU)ECCN (US)Country of Origin
L7980TRVDFPN 8 3x3x1.0Tape And Reel0.6781000NECEAR99PHILIPPINES
L7980APowerSO-8Tube0.7191000NECEAR99CHINA
L7980ATRPowerSO-8Tape And Reel0.7191000NECEAR99CHINA
质量和可靠性
型号PackageGradeRoHS Compliance GradeMaterial Declaration**
L7980TRVDFPN 8 3x3x1.0IndustrialEcopack2md_x0-wspc-vdfpn-wspc-3x3x1.0-wspc-8-wspc-pitch-wspc-0.50_a0x0-wspc-uq73ac5-wspc-locked.pdf
md_x0-wspc-vdfpn-wspc-3x3x1.xml
L7980APowerSO-8IndustrialEcopack2md_61-wspc-hsop-wspc-8l-wspc-.150-wspc-pitch-wspc-1.27-wspc-expopad_kb61uq73ad5-wspc-(l7980atr)-wspc-wcp-wspc-ver2_signed.pdf
md_61-wspc-hsop-wspc-8l-wspc-.150-wspc-pitch-wspc-1.27-wspc-expopad_kb61uq73ad5-wspc-(l7980atr)-wspc-wcp-wspc-ver2.xml
L7980ATRPowerSO-8IndustrialEcopack2md_61-wspc-hsop-wspc-8l-wspc-.150-wspc-pitch-wspc-1.27-wspc-expopad_kb61uq73ad5-wspc-(l7980atr)-wspc-wcp-wspc-ver2_signed.pdf
md_61-wspc-hsop-wspc-8l-wspc-.150-wspc-pitch-wspc-1.27-wspc-expopad_kb61uq73ad5-wspc-(l7980atr)-wspc-wcp-wspc-ver2.xml
2 A step-down switching regulator L7980
circuit_diagram_15181_thumbnail.png L7980
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 L7980
Very low drop voltage regulators with inhibit KFXX
md_x0-wspc-vdfpn-wspc-3x3x1.0-wspc-8-wspc-pitch-wspc-0.50_a0x0-wspc-uq73ac5-wspc-locked.pdf L7980
md_x0-wspc-vdfpn-wspc-3x3x1.xml TS4990
md_61-wspc-hsop-wspc-8l-wspc-.150-wspc-pitch-wspc-1.27-wspc-expopad_kb61uq73ad5-wspc-(l7980atr)-wspc-wcp-wspc-ver2_signed.pdf L7980
md_61-wspc-hsop-wspc-8l-wspc-.150-wspc-pitch-wspc-1.27-wspc-expopad_kb61uq73ad5-wspc-(l7980atr)-wspc-wcp-wspc-ver2.xml L7980