RT9292B LED Boost Driver overview

Description

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RT9292B is a 1 channel, 5.5 V, 0.03 A/string sync LED Boost Driver. It can drive a maximum of 6 LED (~3.5Vfwd) per string, features a fixed 1000 kHz frequency and is available in 2 package option(s): SOT23-6 WDFN-8 .

Further characteristics are a feedback voltage of 0.104 V, a typical inductor size of 22.0 uH and a peak efficiency of 85 %.

Parameter and features overview

ParameterValueReplacement
Search Filter
Nr. of Channel 1
V-IN min. 2.5 V
V-IN max. 5.5 V
V-OUT max. 26.0 V
Nr.of LED per string typ. 6
I-OUT/string? 0.03 A
current limit typ. 0.15 A
sync/non-sync sync
Frequency typ. 1000 kHz
Frequency fixed
Frequency min.
Frequency max.
Softstart yes
Softstart adjustable no
Down-Mode no
Quiescent current max. 600 uA
Operating min. -40 °C
Operating max. 85 °C
Junction min. -40 °C
Junction max. 125 °C
thermal shutdown typ. 160 °C
Inductor size typ. 22.0 uH
feedback voltage 0.104 V
Automotive AEC-Q100 no
Topology Boost
Peak Efficiency 85 %
Component count min. 4
DC dimming yes
PWM dimming yes
PWM frequency min. 0.20 kHz
PWM frequency max. 200.0 kHz
digital dimming no
digital interface no
LED flash no
TxMask no
Nr.of current sources 1
Nr.of package options 2
CSP
SC70
SOT SOT23-6
MSOP
QFN/DFN WDFN-8
SO/SOIC
SOP
DIP

RT9292B Datasheet

Link to the most up-to-date RT9292B datasheet and the product page for EVM, tools and support information.

RT9292B

RT9292B inventory, samples and price

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List with equivalents & alternatives

The following DC/DC LED Boost driver are similar to RT9292B. Optional, compare RT9292B side-by-side with other LED driver via the comparison function.

Variation Compare Product Manufacturer Package
50% LT3465 LT3465 product overviewLT3465 product overview Linear Technology TSOT23-6

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of RT9292B.

V-IN min. 2.5 V, V-OUT max. 26 V, current limit typ. 0.15 A, Frequency typ. 1000 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
74404041033 3.3 1.8 2.1 69.00 4 x 4 x 1.2
74404042033 3.3 2.0 2.9 55.00 4 x 4 x 1.8
74404052033 3.3 2.6 3.0 42.20 5 x 5 x 2
74404052039 3.9 2.4 2.8 50.50 5 x 5 x 2
7440420027 2.7 2.0 2.2 47.00 4.8 x 4.8 x 2
744042003 3.3 2.0 1.8 50.00 4.8 x 4.8 x 2
7440420039 3.9 1.8 1.7 60.00 4.8 x 4.8 x 2
7440430027 2.7 2.4 2.0 25.00 4.8 x 4.8 x 3
744043003 3.3 2.2 1.8 30.00 4.8 x 4.8 x 3
7440430039 3.9 1.7 1.7 50.00 4.8 x 4.8 x 3
744052003 3.0 2.2 2.4 40.00 5.8 x 5.8 x 2
7440520039 3.9 2.0 2.1 50.00 5.8 x 5.8 x 2
744053002 2.6 3.0 2.7 20.00 5.8 x 5.8 x 3
744053003 3.0 2.8 2.5 20.00 5.8 x 5.8 x 3
744053004 4.2 2.5 2.2 30.00 5.8 x 5.8 x 3
744062003 3.3 2.8 2.5 20.00 6.8 x 6.8 x 2.5
7440680027 2.7 2.2 1.9 52.00 8 x 8 x 1.2
7440680033 3.3 2.0 1.8 61.00 8 x 8 x 1.2
7440690033 3.3 2.6 2.3 42.00 8 x 8 x 1.5
7440700033 3.3 3.2 2.6 30.00 8 x 8 x 2
74438335033 3.3 1.7 3.2 114.00 3 x 3 x 1.5
744773027 2.7 2.3 3.0 39.00 4 x 4.5 x 3.5
744773033 3.3 2.0 2.9 41.00 4 x 4.5 x 3.5
744773039 3.9 1.9 2.6 54.00 4 x 4.5 x 3.5
7447785003 3.3 2.8 3.0 43.00 5.9 x 6.2 x 3.3
78438335033 3.3 1.7 3.2 114.00 3 x 3 x 1.5
784773033 3.3 2.0 2.9 41.00 4 x 4.5 x 3.5
784773039 3.9 1.9 2.6 54.00 4 x 4.5 x 3.5
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