AME5177 Datasheet, PDF (1/14 Pages) Analog Microelectronics – Synchronous Boost Converter

AME
AME5177
Synchronous Boost Converter
With Low Quiescent Current
n General Description
The AME5177 is a high efficiency synchronous boost
converter, which is based on a hysteretic controller topol-
ogy using synchronous rectification to obtain maximum
efficiency at minimal quiescent currents. The converter
provides a power supply solution for products powered
by a variety of batteries such as single-cell, dual-cell,
tree-cell alkaline, NiCd or NiMH, or one-cell Li-Ion or Li-
polymer battery.
The output voltage is internally programmable in a range
from 1.8V to 5V in increments of 0.1V. Moreover, the
converter can be switched off by an enable pin to mini-
mize battery drain. The maximum average input current
is limited to 450mA for current limit.
n Features
l Very Low Start-up Voltage at 0.8V
l Output Voltage Range: 1.8V~5V in 0.1V
increments
l Output Voltage Accuracy ± 2%
l Output Currents up to 100mA
l No Schottky Diode Required
l Support Inductor of Multilayer Type
l Typical Shutdown Current Less than 0.7uA
l Typical Quiescent Current Less than 6.5uA
l Over Current Protection
l Over Temperature Protection
l Available in SOT-25, SOT-26 and DFN-6D
Package
l RoHS Compliant and Halogen Free
n Typical Application
n Functional Block Diagram
n Application
l All One-Cell, Two-Cell and Three-Cell Alkaline,
NiCd, NimH and Single-Cell Batteries
l Wireless Mouse
l Mobile-Applications
l Hand-Held Devices
Rev. A.01
1