Datasheet Intersil ISL91134 — Даташит

DATA SHORT
To request the full datasheet, please visit www.intersil.com/products/isl91134 ISL91134 FN8678
Rev 1.00
October 3, 2014 High Efficiency 1.8A Boost Regulator With Input-to-Output Bypass
The ISL91134 is an integrated boost switching regulator for
battery powered applications. The device provides a power
supply solution for products using a one cell Li-ion or
Li-polymer battery. Features The device is capable of delivering up to 1.8A output current
from VIN = 3V and VOUT = 5V. The no load quiescent current is
only 108ВµA in Boost Mode and 45ВµA in Forced Bypass Mode,
which significantly reduces the standby consumption. High efficiency: up to 96% The ISL91134 offers a Bypass Mode operation where the
output is directly connected to the input through a 38mО©
MOSFET to allow a significantly lower dropout voltage. The
Bypass Mode can be entered by an external command or by
auto bypass. The Forced Bypass Mode allows the output
voltage to operate close to the input voltage and improves the
efficiency under these conditions.
The ISL91134 is designed to support a fixed output voltage of
5V. A voltage select pin is available for each output variant to
scale up the output voltage by a small offset to compensate
the load transient droop. Input voltage range: 2.35V to 5.4V Output current: up to 1.8A (VIN = 3V, VOUT = 5V) 108ВµA quiescent current minimizes standby consumption in
Boost Mode, 45ВµA in Forced Bypass Mode 2.5MHz switching frequency minimizes external component
size Forced Bypass or Auto Bypass Modes with a 38mО© switch PFM mode at light-load currents Fully protected for overcurrent, over-temperature and …