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reference designL5983

STMicroelectronics L5983

1.5 A step-down switching regulator

Overview

TopologyLLC Resonant Converter
Input voltage3.3-18 V
Output 13.3 V
IC revision8

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

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

More information

Products

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Order Code
Data­sheet
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Product series
L(µH)
IRP,40K(A)
RDC max.(mΩ)
fres(MHz)
Size
Version
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7447779006
SPECWE-PD SMT Power Inductor, 6.8 µH, 4.25 A

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-PD SMT Power Inductor
Inductance6.8 µH
Performance Rated Current4.25 A
DC Resistance35 mΩ
Self Resonant Frequency32 MHz
Size7345 
VersionRobust 
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