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MaxLinear SP6669

600mA 1.5MHz Synchronous Step Down Converter

Overview

TopologyBuck Converter
Input voltage2.5-5.5 V
Switching frequency1200-1800 kHz
Output 11.5 V / 0.6 A
Output 21.2 V / 0.6 A
Output 31.8 V / 0.6 A
Output 40.6 V
IC revision2.2.0

Description

The SP6669 is a synchronous current mode PWM step down (buck) converter capable of delivering up to 600mA of current. It features a pulse skip mode (PSM) for light load efficiency and a LDO mode for 100% dutycycle. With a 2.5V to 5.5V input voltage range and a 1.5MHz switching frequency, the SP6669 allows the use of small surface mountinductors and capacitors ideal for battery powered portable applications. The internal synchronous switch increases efficiency andeliminates the need for an external Schottky diode. Low output voltages are easily supported with the 0.6V feedback referencevoltage. The SP6669 is available in an adjustable output voltage version, using an external resistor divider circuit, as well as fixed output voltage versions of 1.2V, 1.5V and 1.8V.Built-in over temperature and output over voltage lock-out protections insure safe operations under abnormal operating conditions. The SP6669 is offered in a RoHS compliant, -pin SOT23 package.

Features

  • Guaranteed 600mA Output Current
  • Input Voltage: 2.5V to 5.5V
  • 1.5MHz PWM Current Mode Control
  • 100% Duty Cycle LDO Mode Operations
  • Achieves 95% Efficiency
  • Fixed/Adjustable Output Voltage
  • Range
  • As Low as 0.6V with ±3% Accuracy
  • 1.2V, 1.5V, 1.8V Fixed Voltage Options
  • Excellent Line/Load Transient
  • Response
  • 200μA Quiescent Current
  • Over Temperature Protection
  • RoHS Complaint " green"/ Halogen free 5-Pin SOT23 Package

Typical applications

  • Battery Operated Equipments
  • Networking & Telecom Equipments
  • Portable Equipments
  • Audio-Video Equipments

Products

Order Code Data­sheet Downloads Product seriesL
(µH)
IR
(A)
ISAT
(A)
RDC typ.
(mΩ)
fres
(MHz)
Mount Samples
744025004
STE ALT EAG CAD LTS PSP SPE IGS CADWE-TPC SMT Tiny Power Inductor 4.7 1.35 1.7 100 84 SMT
Order Code Data­sheet
744025004
Samples
Order Code Data­sheet Downloads Product seriesL
(µH)
IR
(A)
ISAT
(A)
RDC typ.
(mΩ)
fres
(MHz)
Mount Samples