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MaxLinear SP7648

Low Reference High Efficiency Boost Regulator

Overview

TopologyBoost Converter
Input voltage2.7-4.5 V
Output 15.5 V / 0.8 A
IC revision2.0.0

Description

The SP7648 is an ultra-low quiescent current,high efficiency step-up DC-DC converter idealfor single cell Li-Ion or dual cell alkalinebattery applications to drive various LEDs. TheSP7648 combines low quiescent current andexcellent light-load efficiency of PFM control.The SP7648 features synchronous rectification,a 0.3 charging switch, an anti-ringinginductor switch, under-voltage lockout andprogrammable inductor peak current. Thedevice can be shut down by a 1nA active LOWshutdown pin. A very low 0.288V referencevoltage is optimized for driving a constantcurrent load.

Features

  • True Shutdown
  • 700mA Output Current at 3.3V Input; 4.2V output
  • 92% Efficiency from 2.7VIN to 3.3VOUT
  • 2.7V to 4.5V Wide Input Voltage Range
  • 5V Fixed or Adjustable Output0.3ohm Switch
  • Integrated Synchronous Rectifier:0.3
  • Anti-Ringing Switch Technology
  • Programmable Inductor Peak Current
  • Logic Shutdown Control
  • Low 0.8V or 0.288V Reference Voltage
  • Small 10-pin DFN and MSOP Package

Typical applications

  • Handheld Portable Devices
  • LED Driver
  • Camera Flash

Products

Order Code Data­sheet Downloads Product seriesL
(µH)
IR
(A)
ISAT
(A)
RDC typ.
(mΩ)
fres
(MHz)
Mount Samples
744042004
STE ALT EAG CAD LTS PSP SPE IGS CADWE-TPC SMT Tiny Power Inductor 4.7 1.72 1.65 70 70 SMT
744042006
STE ALT EAG CAD LTS PSP SPE IGS CADWE-TPC SMT Tiny Power Inductor 6.8 1.5 1.25 80 60 SMT
Order Code Data­sheet
744042004
744042006
Samples
Order Code Data­sheet Downloads Product seriesL
(µH)
IR
(A)
ISAT
(A)
RDC typ.
(mΩ)
fres
(MHz)
Mount Samples