ADP2138-2,5 Buck Converter overview



ADP2138-2,5 is a 5.50 V sync Buck Converter from with 0.80 A output current. The maximum 5.50 V input voltage can be regulated down into a 2.50 V to 2.50 V output voltage.

It requires are a typical inductor size of 1.00 µH, a typical external component count of 3 and achieves a peak efficiency of 95 %. Further ADP2138-2,5 characteristics are a fixed 3000 kHz switching frequency and 1 available package option(s): WLCSP-6 .

For the ADP2138-2,5 replacement search, please 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. 2.30 V
V-IN max. 5.50 V
I-OUT? 0.80 A
V-OUT min. 2.50 V
V-OUT max. 2.50 V
V-OUT 2.500 V
V-OUT programmable no
sync/non-sync sync
Frequency typ. 3000 kHz
Frequency fixed
Frequency selectable
ext.clock sync. no
Frequency adj./ ext.clock min.
Frequency adj./ ext.clock max
Softstart yes
Softstart adjustable no
Tracking no
PG/Power OK no
Quiescent current max. 30 µA
Operating min.
Operating max.
Junction min. -40 °C
Junction max. 125 °C
thermal shutdown typ. 150 °C
Inductor size typ. 1.00 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode yes
Topology Buck
Peak Efficiency 95 %
Component count min. 3
current limit adjustable no
Nr.of packages 1

ADP2138-2,5 Datasheet

Link to the most up-to-date ADP2138-2,5 datasheet and the product page for EVM, tools and support information.


ADP2138-2,5 Sample stock and distributor price breaks

ADP2138-2,5 prices and online available distributors.

Available Distributors with stock: 0

no online Distributor with ADP2138 stock available

Available Distributors with stock: 0

no online Distributor with ADP2138 stock available

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to ADP2138-2,5. Optional, compare ADP2138-2,5 side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% ADP2120-2,5 ADP2120-2,5 product overviewADP2120-2,5 product overview Analog Devices QFN-10
0% ADP2139-2,5 ADP2139-2,5 product overviewADP2139-2,5 product overview Analog Devices WLCSP-6
0% MAX1556-2.5 MAX1556-2.5 product overviewMAX1556-2.5 product overview Maxim TDFN-EP-10
0% MAX1742-2.5 MAX1742-2.5 product overviewMAX1742-2.5 product overview Maxim QSOP-16
0% MAX1842-2.5 MAX1842-2.5 product overviewMAX1842-2.5 product overview Maxim QSOP-16
0% MAX1928-2.5 MAX1928-2.5 product overviewMAX1928-2.5 product overview Maxim u00b5MAX-10
0% BU90005 BU90005 product overviewBU90005 product overview Rohm CSP-6
0% LM2651-2.5 LM2651-2.5 product overviewLM2651-2.5 product overview Texas Instruments TSSOP-16
0% LM3691-2.5 LM3691-2.5 product overviewLM3691-2.5 product overview Texas Instruments DSBGA-6
0% RP505K-2.5 RP505K-2.5 product overviewRP505K-2.5 product overview Ricoh DFN-8
0% XC9261-C-2.5 XC9261-C-2.5 product overviewXC9261-C-2.5 product overview Torex USP-6, SOT89-5
0% XC9261-D-2.5 XC9261-D-2.5 product overviewXC9261-D-2.5 product overview Torex USP-6, SOT89-5
0% TS30011-2.5 TS30011-2.5 product overviewTS30011-2.5 product overview Triune Systems QFN-16
0% TS33001-2.5 TS33001-2.5 product overviewTS33001-2.5 product overview Triune Systems QFN-16
0% TS30021-2.5 TS30021-2.5 product overviewTS30021-2.5 product overview Triune Systems QFN-16
0% MP2148-2.5 MP2148-2.5 product overviewMP2148-2.5 product overview MPS QFN-6
0% RP509Z-1-2.5 RP509Z-1-2.5 product overviewRP509Z-1-2.5 product overview Ricoh WLCSP-6

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of ADP2138-2,5.

V-IN max. 5.5 V, I-OUT 0.8 A, V-OUT min. 2.5 V, Frequency typ. 3000 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744030001 1.2 1.0 1.1 95.00 3.3 x 3.5 x 1.05
744031001 1.5 1.8 1.6 40.00 3.8 x 3.8 x 1.8
74479787215A 1.5 1.9 1.1 70.00 2.5 x 2 x 1
74479976215 1.5 1.6 1.9 100.00 2 x 1.6 x 0.5
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