RP509Z-2-1.1 Buck Converter overview



RP509Z-2-1.1 is a 5.50 V sync Buck Converter from with 0.50 A output current. The maximum 5.50 V input voltage can be regulated down into a 1.10 V to 1.10 V output voltage.

It requires are a typical inductor size of 0.47 µH, a typical external component count of 3 and achieves a peak efficiency of 97 %. Further RP509Z-2-1.1 characteristics are a fixed 6000 kHz switching frequency and 1 available package option(s): WLCSP-6 .

For the RP509Z-2-1.1 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.

Search Filter
V-IN min. 2.30 V
V-IN max. 5.50 V
I-OUT? 0.50 A
V-OUT min. 1.10 V
V-OUT max. 1.10 V
V-OUT 1.100 V
V-OUT programmable no
sync/non-sync sync
Frequency typ. 6000 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. -15 µA
Operating min. -40 °C
Operating max. 85 °C
Junction min. -40 °C
Junction max. 125 °C
thermal shutdown typ. 140 °C
Inductor size typ. 0.47 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode yes
Topology Buck
Peak Efficiency 97 %
Component count min. 3
current limit adjustable no
Nr.of packages 1

RP509Z-2-1.1 Datasheet

Link to the most up-to-date RP509Z-2-1.1 datasheet and the product page for EVM, tools and support information.


RP509Z-2-1.1 Sample stock and distributor price breaks

RP509Z-2-1.1 prices and online available distributors.


Available Distributors with stock: 1

Chip-One-Stop (3)

11.71 USD
100.79 USD
500.77 USD
1000.66 USD
2000.64 USD
5000.63 USD
Buy Now
11.67 USD
100.77 USD
500.75 USD
1000.66 USD
Buy Now
11.67 USD
100.77 USD
500.75 USD
1000.66 USD
Buy Now

Available Distributors with stock: 0

no online Distributor with RP509Z stock available

List of equivalents and alternatives

The following DC/DC Buck Converter are similar to RP509Z-2-1.1. Optional, compare RP509Z-2-1.1 side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% ADP2108-1,1 ADP2108-1,1 product overviewADP2108-1,1 product overview Analog Devices TSOT23-5, CSP-5
0% FAN53611-1.1 FAN53611-1.1 product overviewFAN53611-1.1 product overview Fairchild CSP-6
0% MAX8640Y-1.1 MAX8640Y-1.1 product overviewMAX8640Y-1.1 product overview Maxim u00b5DFN-6
0% MAX8640Z-1.1 MAX8640Z-1.1 product overviewMAX8640Z-1.1 product overview Maxim u00b5DFN-6
0% TPS622311 TPS622311 product overviewTPS622311 product overview Texas Instruments SON-6
0% RP504x-1.1 RP504x-1.1 product overviewRP504x-1.1 product overview Ricoh DFN-6, SOT23-5
0% RP508x-1.1 RP508x-1.1 product overviewRP508x-1.1 product overview Ricoh DFN-6
0% RP505K-1.1 RP505K-1.1 product overviewRP505K-1.1 product overview Ricoh DFN-8
0% RP509Z-1-1.1 RP509Z-1-1.1 product overviewRP509Z-1-1.1 product overview Ricoh WLCSP-6

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of RP509Z-2-1.1.

V-IN max. 5.5 V, I-OUT 0.5 A, V-OUT min. 1.1 V, Frequency typ. 6000 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
74479762168 0.7 1.0 0.7 220.00 1.6 x 0.8 x 0.55
74479763168 0.7 1.0 1.0 180.00 1.6 x 0.8 x 0.95
74479763210A 1.0 0.9 0.7 200.00 1.6 x 0.8 x 0.95
74479773210 1.0 1.2 0.8 180.00 2 x 1.25 x 0.6
74479775210A 1.0 1.3 1.0 110.00 2 x 1.2 x 1.2
74479776210 1.0 1.4 1.0 90.00 2 x 1.6 x 1
74479787210B 1.0 2.0 1.2 60.00 2.5 x 2 x 1
74479887210A 1.0 1.6 1.0 100.00 2.5 x 2 x 1
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