STMicroelectronics L5983

Description

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 that can be externallyadjusted up to 1 MHz.The VFQFPN package with an exposed pad allows reducing the RthJA down to approximately 60 °C/W.

Features

• 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
• Voltage feedforward
• Zero load current operation
• Overcurrent and thermal protection
• VFQFPN8 3 x 3 mm packageREMARKS:-REFERPage no.16Table 7.Inductors

Typical applications

• LED driving
• Networking: XDSL, modems, DC-DC modules
• Computer: optical storage, hard disk drive,
• Industrial: chargers, PLD, PLA, FPGA
• Consumer: STB, DVD, DVD recorder, car

More information

• Datasheet
• IC product information