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

Typical Diagram

enlarge +typical diagram

Key Features

    • Up to 95% efficiency at typical operating conditions
    • Input voltage range: 0.8V to 4.7V
    • Output current: Up to 500mA (VBAT = 3.0V,
      VOUT = 5.0V)
    • Low quiescent current: 20μA (typical)
    • Logic control shutdown (IQ < 1µA)
    • Fixed 5V, 5.1V or adjustable output
    • 1.2V EN high logic
    • Output disconnect during shutdown
    • Skip mode under light load condition
    • Undervoltage lockout
    • Fault protection: OVP (ADJ version only), OTP, short circuit
    • 8 Ld 2mmx2mm DFN Package and 6 Bump 0.8mmx1.36mm WLCSP


The ISL9113 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 ISL9113 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 and a 6 bump WLCSP.


    • Products including portable HDMI and USB-OTG
    • Smartphones
    • Tablet and mobile internet devices


Design Tip

What are the MOSFET Driver Dynamics and Current Sense Methods that one needs to be concerned about in PWM Converters?

See More »

Is there somewhere I can find out what simulations and models (e.g. Spice, PSpice, IBIS) are available on your website?

See More »

iSIM Simulator

Select a category to start designing:

Enter design requirements:

Min Max
Vin: V V
Vout Iout
Output: V A
Min Max
Vin: V V
Vout Iout
Output: V A
Desired Closed Loop Gain:
Desired Min. Bandwidth:

Support | Ask An Expert

Need tech support for a product or design?
(Support FAQs)

Ask »

Follow Us Intersil Wins Outstanding Achievement in Web Development

Find pricing and availability for your part number. Order Parts, Eval Boards and Samples

Contact Sales »


Sign in to your account…
Search Orders    
Please Wait...


Simply Smarter