DATA SHORT
To request the full datasheet, please visit www.intersil.com/products/isl91132 ISL91132 FN8637
Rev.1.00
Decem ber 8, 2016 High Efficiency 1.8A Boost Regulator with Input-to-Output Bypass
The ISL91132 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 Lipolymer battery. Features The device is capable of delivering up to 1.8A output current
from VIN = 2.5V and VOUT = 3.3V. The no-load quiescent
current is only 108ОјA in Boost mode and 45ОјA in Forced
Bypass mode, which significantly reduces the standby
consumption. Burst current up to 2A (VIN = 2.5V, VOUT = 3.3V, tON < 600Вµs,
T = 4.6ms) The ISL91132 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 ISL91132 is designed to support six fixed output voltages
ranging from 3.15V to 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.
The ISL91132 requires only an inductor and a few external …
