Teilenummer : L5983
Function : 1.5 A step-down switching regulator
Hersteller : STMicroelectronics
The L5983 is a step-down switching regulator with a 2.0 A (min.) current limited embedded
Power MOSFET, so it is able to deliver an output current in excess of 1.5 A DC to the load.
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 VFQFPN package with an exposed pad allows reducing the RthJA down to approximately 60 °C/W.
1.5 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
Zero load current operation
Overcurrent and thermal protection
VFQFPN8 3 x 3 mm package
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
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