RT6575B Buck Controller overview

Description

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RT6575B is a 2 channel, 2 phase sync Buck Controller. The maximum input voltage ranges from 5.00 V to 25.00 V and output current goes up to 8.00 A.

The Controller features fixed 300 kHz switching frequency which results in a typical inductor size of 3.3 uH and a peak efficiency of 96 %. The RT6575B is available in 1 package option(s): WQFN-20 .

Parameter and features overview

ParameterValueReplacement
Search Filter
Nr. of Channel 2
V-IN min. 5.00 V
V-IN max. 25.00 V
I-OUT? 8.00 A
V-OUT min. 2.00 V
V-OUT max. 5.50 V
V-OUT adjustable
V-OUT programmable no
sync/non-sync sync
Frequency typ. 300 kHz
Frequency adj. fixed
Frequency adj. min.
Frequency adj. max.
ext.clock sync. no
ext.clock Frequency min.
ext.clock Frequency max.
Softstart yes
Softstart adjustable no
Tracking no
Power Good (PG) yes
Enable yes
Operating min. -40 °C
Operating max. 85 °C
Junction min. -40 °C
Junction max. 125 °C
thermal shutdown typ. 150 °C
Inductor size typ. 3.3 uH
Automotive AEC-Q100 no
Light-Load Mode yes
Single/ Multiphase multi
Nr. of Phases 2
Peak Efficiency 96 %
component count min. 20
current limit adjustable no
Nr.of package options 1
CSP
SOT
MSOP
QFN/DFN WQFN-20
SO/SOIC
SOP
DIP

RT6575B Datasheet

Link to the most up-to-date RT6575B datasheet and the product page for EVM, tools and support information.

RT6575B

RT6575B inventory, samples and price

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Available Distributors with stock: 0

no online Distributor with RT6575B stock available

Available Distributors with stock: 0

no online Distributor with RT6575B stock available

Table with equivalents and alternatives

The following Buck Controller are similar to RT6575B. Or, compare RT6575B side-by-side with other Buck Controller via the Comparison function.

Variation Compare Product Manufacturer Package
0% TPS53128 TPS53128 product overviewTPS53128 product overview Texas Instruments VQFN-24, TSSOP-24
0% TPS53129 TPS53129 product overviewTPS53129 product overview Texas Instruments VQFN-24, TSSOP-24
0% TPS59124 TPS59124 product overviewTPS59124 product overview Texas Instruments VQFN-24
0% RT6575A RT6575A product overviewRT6575A product overview Richtek WQFN-20
25% FAN5236 FAN5236 product overviewFAN5236 product overview Fairchild TSSOP 28L
50% FAN5026 FAN5026 product overviewFAN5026 product overview Fairchild TSSOP 28L

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of RT6575B.

V-IN max. 25 V, I-OUT 8 A, V-OUT min. 2 V, Frequency typ. 300 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
744311220 2.2 9.0 13.0 11.40 7 x 6.9 x 4
744313220 2.2 14.0 18.0 5.70 12.9 x 12.8 x 3.5
744323220 2.2 9.0 15.0 11.38 10.6 x 10.6 x 3.1
744325180 1.8 16.0 18.0 3.50 10.5 x 10.2 x 5
744325240 2.4 14.0 17.0 4.75 10.5 x 10.2 x 5
7443340220 2.2 16.5 12.5 5.30 8.4 x 7.9 x 7.5
7443550230 2.3 17.5 17.0 3.60 13 x 12.8 x 5
7443551280 2.8 19.0 17.5 3.40 13.2 x 12.8 x 6.5
7443552200 2.0 11.0 13.0 7.30 10.5 x 10.2 x 4.2
7443552280 2.8 9.5 11.0 10.60 10.5 x 10.2 x 4.2
74437356022 2.2 8.5 15.5 13.60 8.64 x 8.5 x 3
7447471022 2.2 8.2 10.0 7.50 10.5 x 10.5 x 11.5
74477002 2.4 10.1 14.3 9.00 12 x 12 x 8
7447709002 2.2 11.5 20.0 4.90 12 x 12 x 10
744771002 2.2 10.0 11.0 5.00 12 x 12 x 6
7447797180 1.8 9.4 13.0 7.40 10.2 x 10.2 x 4.5
7447797250 2.5 8.4 10.5 9.00 10.2 x 10.2 x 4.5
7447798180 1.8 14.5 12.8 3.80 10.2 x 10.2 x 6.4
7447798250 2.5 13.7 10.1 4.40 10.2 x 10.2 x 6.4
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