DATASHEET
ISL78113A FN8638
Rev 0.00
May 1, 2014 Low Input Voltage and High Efficiency Synchronous Boost Converter with 1.3A
Switch
The ISL78113A provides a tiny and convenient boost power
supply solution to generate a regulated output up to 500mA
from any sub-5V secondary rail found in an automotive
electrical system, including battery powered applications
(NiCd, NiMH, or one-cell Li-Ion/Li-Polymer). It offers an
adjustable output (3.0V to 5.2V) supporting USB-OTG or HDMI
applications. The device is able to supply 500mA from a 3V
input and 5V output, and has a typical 1.3A peak current limit. Features Output disconnect during shutdown preventing output
precharging and uncontrolled short-circuit current Input voltage range: 0.8V to 4.7V Output current: Up to 500mA (VBAT = 3V, VOUT = 5V) Logic control shutdown (IQ < 1ВµA) The ISL78113A is a fully integrated, internally compensated,
synchronous converter optimized to maximize efficiency and
reduce the overall solution size and bill of materials. Its high
2MHz switching frequency allows the use of tiny, low-profile
inductors and chip capacitors. It also eliminates potential
interference within the AM radio band and the external EMI
filtering needed for converters switching at lower rates. To
minimize power consumption while off, the device features an
ultra-low current shutdown mode dropping quiescent current
to 50nA typical. 2MHz switching frequency ISL78113A is supplied in an 8 Ld DFN package. The device is …
