FN8620 Rev 1.00

Page 1 of 10

January 4, 2017

FN8620

Rev 1.00

January 4, 2017

ISL9113A

Low Input Voltage and High Efficiency, Synchronous Boost Converter with 1.3A

Switch

DATASHEET

The ISL9113A provides a power supply solution for devices

powered by three-cell alkaline, NiCd, NiMH, or one-cell

Li-Ion/Li-Polymer batteries. It offers either a fixed 5V or an

adjustable output option for USB-OTG or portable HDMI

applications. The device is guaranteed to supply 500mA from

a 3V input and 5V output, and has a typical 1.3A peak current

limit. High 1.8MHz switching frequency allows for the use of

tiny, low-profile inductors, and ceramic capacitors to minimize

the size of the overall solution.

The ISL9113A is an internally compensated, fully integrated

synchronous converter optimized for efficiency with minimal

external components. At light load, the device enters Skip

mode and consumes only 20µA of quiescent current, resulting

in higher efficiency at light loads and maximum battery life.

The device is available in an 8 Ld DFN package.

Related Literature

• For a full list of related documents, visit our website

- ISL9113A product page

Features

• Up to 95% efficiency at typical operating conditions

• Input voltage range: 0.8V to 4.7V

•Low quiescent current: 20μA (typical)

• 1.2V EN high logic

• Output disconnect during shutdown

• Skip mode under light-load condition

• Undervoltage lockout

• Fault protection: OVP, OTP, short-circuit

•8 Ld 2mmx2mm DFN Package

Applications

• Products including portable HDMI and USB-OTG

•Smartphones

• Tablet and mobile internet devices

FIGURE 1. TYPICAL APPLICATION

FIGURE 2. EFFICIENCY

SW

EN

GND

FB

VOUT

VBAT

5.0V/500mA

2.2µH

4.7µF

4.7µF

0.8 TO 4.7V

523k

100k

1

2

4

8

7

5

50

55

60

65

70

75

80

85

90

95

100

0.0001

0.001

0.01

0.1

1

LOAD CURRENT (A)