ISL9111A Boost Converter Overview



ISL9111A is a 5.25 V, 1.00 A switch current limit sync Boost Converter from . The input voltage from 0.60 V to 5.25 V  can be boosted into an output voltage ranging from 2.50 V to 5.25 V.

Features of the Boost Converter are fixed 1200 kHz switching frequency, a typical inductor size of 4.7 µH and it offers a peak efficiency of  up to 97 %. The minimum external component count is 5 and ISL9111A is available in 1 package option(s): SOT23-6 .

For ISL9111A replacement search, select a main parameter tolerance value and adjust the checkboxes for feature match. The product counter within the button shows the number of available equivalents and a click on the replacement button shows all possible replacements within a parametric overview.

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V-IN min. 0.60 V
V-IN max. 5.25 V
Current-Limit typ.? 1.00 A
V-OUT min. 2.50 V
V-OUT max. 5.25 V
VOUT adjustable
VOUT programmable no
sync/non-sync sync
Frequency typ. 1200 kHz
Frequency adjustable fixed
Frequency selectable
Frequency adj. min.
Frequency adj. max.
extern clock sync. no
Softstart yes
Softstart adjustable no
Tracking no
PG/Power OK no
Frequency sync. min.
Frequency sync. max.
Down Mode no
Quiescent current max. 45 µA
Operating min. -20 °C
Operating max. 85 °C
Junction min. -20 °C
Junction max. 125 °C
thermal shutdown typ. 150 °C
Inductor size typ. 4.7 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode yes
Topology Boost
Peak Efficiency 97 %
Component count min. 5
current limit adjustable no
Nr.of package options 1

ISL9111A Datasheet

Link to the most up-to-date ISL9111A datasheet and the product page for EVM, tools and support information.


ISL9111A Price breaks and distributor sample stock

ISL9111A prices and available online distributors.

Available Distributors with stock: 0

no online Distributor with ISL9111A stock available

Available Distributors with stock: 0

no online Distributor with ISL9111A stock available

Alternatives and equivalents

The following DC/DC Boost Converter are similar to ISL9111A. Optional, compare ISL9111A side-by-side with other Boost Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% TPS61200 TPS61200 product overviewTPS61200 product overview Texas Instruments QFN-10
10% LTC3528 LTC3528 product overviewLTC3528 product overview Linear Technology DFN-8
10% XC9131 XC9131 product overviewXC9131 product overview Torex USP-10B
10% XC9135 XC9135 product overviewXC9135 product overview Torex USP-10
10% XC9136 XC9136 product overviewXC9136 product overview Torex USP-10
10% RP402-K001A-B-C-D RP402-K001A-B-C-D product overviewRP402-K001A-B-C-D product overview Ricoh DFN-8
25% ISL9111 ISL9111 product overviewISL9111 product overview Intersil SOT23-6
25% LTC3429 LTC3429 product overviewLTC3429 product overview Linear Technology TSOT23-6
25% LTC3537 LTC3537 product overviewLTC3537 product overview Linear Technology QFN-16
25% MCP1640 MCP1640 product overviewMCP1640 product overview Microchip SOT23-6, DFN-8
25% MP3120 MP3120 product overviewMP3120 product overview MPS TSOT23-6
25% TPS61260 TPS61260 product overviewTPS61260 product overview Texas Instruments SON-6
50% LTC3526 LTC3526 product overviewLTC3526 product overview Linear Technology DFN-6
50% LTC3527 LTC3527 product overviewLTC3527 product overview Linear Technology QFN-16
50% LTC3527-1 LTC3527-1 product overviewLTC3527-1 product overview Linear Technology QFN-16
50% LTC3535 LTC3535 product overviewLTC3535 product overview Linear Technology DFN-12
50% TPS61028 TPS61028 product overviewTPS61028 product overview Texas Instruments QFN-10
50% MCP16251 MCP16251 product overviewMCP16251 product overview Microchip SOT23-6, TDFN
50% MCP16252 MCP16252 product overviewMCP16252 product overview Microchip SOT23-6, TDFN

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of ISL9111A.

V-IN min. 0.6 V, Current-Limit typ. 1 A, V-OUT max. 5.25 V, Frequency typ. 1200 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744302010 0.1 30.0 45.0 0.24 6.95 x 6.8 x 4.7
744302015 0.2 30.0 32.0 0.24 6.95 x 6.8 x 4.7
744303012 0.1 31.0 55.0 0.33 10 x 6.8 x 5
744303015 0.2 31.0 42.0 0.33 10 x 6.8 x 5
744304010 0.1 26.0 52.0 0.17 11.5 x 11.8 x 4
744307012 0.1 29.0 48.0 0.33 7.4 x 7.2 x 7.2
744308015 0.2 27.0 58.0 0.37 10.1 x 7 x 7
744310013 0.1 22.0 48.0 0.91 7 x 6.9 x 3.3
744355215 0.2 25.0 60.0 0.58 10.5 x 10.2 x 4.2
744373240010 0.1 12.0 30.0 3.20 4.45 x 4.06 x 2
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