Description
The L5981 is a step-down switching regulator with a 1.5 A (min.) current limited embedded
Power MOSFET, so it is able to deliver in excess of 1 A DC current to the load depending on the
application condition. The input voltage can range from 2.9 V to 18 V, while the output voltage can be set starting from 0.6 V to VIN . Having a minimum input voltage of 2.9 V, the device is suitable also for a 3.3 V bus. Requiring a minimum set of external components, the device includes an internal 250 kHz switching frequency oscillator thatcan be externally adjusted up to 1 MHz.
The VFQFPN8 package with an exposed pad allows reducing the RthJA down to approximately
60 °C/W.
Features
1 A DC output current
2.9 V to 18 V input voltage
Output voltage adjustable from 0.6 V
250 kHz switching frequency, programmable
up to 1 MHz
Internal soft-start and inhibit
Low dropout operation: 100% duty cycle
Voltage feedforward
Zero load current operation
Overcurrent and thermal protection
VFQFPN8 3 mm x 3 mm package
Applications
Consumer: STB, DVD, DVD recorder, car audio, LCD TV and monitors
Industrial: chargers, PLD, PLA, FPGA
Networking: XDSL, modems, DC-DC modules
Computer: optical storage, hard disk drive,
printers, audio/graphic cards
LED driving
Description
The L5981 is a step-down switching regulator with a 1.5 A (min.) current limited embedded
Power MOSFET, so it is able to deliver in excess of 1 A DC current to the load depending on the
application condition. The input voltage can range from 2.9 V to 18 V, while the output voltage can be set starting from 0.6 V to VIN . Having a minimum input voltage of 2.9 V, the device is suitable also for a 3.3 V bus. Requiring a minimum set of external components, the device includes an internal 250 kHz switching frequency oscillator thatcan be externally adjusted up to 1 MHz.
The VFQFPN8 package with an exposed pad allows reducing the RthJA down to approximately
60 °C/W.
Features
1 A DC output current
2.9 V to 18 V input voltage
Output voltage adjustable from 0.6 V
250 kHz switching frequency, programmable
up to 1 MHz
Internal soft-start and inhibit
Low dropout operation: 100% duty cycle
Voltage feedforward
Zero load current operation
Overcurrent and thermal protection
VFQFPN8 3 mm x 3 mm package
Applications
Consumer: STB, DVD, DVD recorder, car audio, LCD TV and monitors
Industrial: chargers, PLD, PLA, FPGA
Networking: XDSL, modems, DC-DC modules
Computer: optical storage, hard disk drive,
printers, audio/graphic cards
LED driving
Feature
- 1ADCoutputcurrent
- 2.9Vto18Vinputvoltage
- Outputvoltageadjustablefrom0.6V
- 250kHzswitchingfrequency,programmableupto1MHz
- Internalsoft-startandinhibit
- Lowdropoutoperation:100%dutycycle
- Voltagefeedforward
- Zeroloadcurrentoperation
- Overcurrentandthermalprotection
- VFQFPN83mmx3mmpackage
