LM3485-Q1 Buck Controller overview

Description

Manufacturer
 
Category
Sub-Category

LM3485-Q1 is a 1 channel, 1 phase non-sync Buck Controller. The maximum input voltage ranges from 4.50 V to 35.00 V and output current goes up to 4.00 A.

The Controller features fixed 400 kHz switching frequency which results in a typical inductor size of 22.0 uH and a peak efficiency of 93 %. The LM3485-Q1 is available in 1 package option(s): VSSOP-8 .

Parameter and features overview

ParameterValueReplacement
Search Filter
Nr. of Channel 1
V-IN min. 4.50 V
V-IN max. 35.00 V
I-OUT? 4.00 A
V-OUT min. 1.24 V
V-OUT max. 35.00 V
V-OUT adjustable
V-OUT programmable no
sync/non-sync non-sync
Frequency typ. 400 kHz
Frequency adj. fixed
Frequency adj. min.
Frequency adj. max.
ext.clock sync. no
ext.clock Frequency min.
ext.clock Frequency max.
Softstart no
Softstart adjustable no
Tracking no
Power Good (PG) yes
Enable no
Operating min. -40 °C
Operating max. 125 °C
Junction min. -40 °C
Junction max. 125 °C
thermal shutdown typ.
Inductor size typ. 22.0 uH
Automotive AEC-Q100 yes
Light-Load Mode yes
Single/ Multiphase single
Nr. of Phases 1
Peak Efficiency 93 %
component count min. 10
current limit adjustable no
Nr.of package options 1
CSP
SOT
MSOP
QFN/DFN
SO/SOIC
SOP VSSOP-8
DIP

LM3485-Q1 Datasheet

Link to the most up-to-date LM3485-Q1 datasheet and the product page for EVM, tools and support information.

LM3485-Q1

LM3485-Q1 inventory, samples and price

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Available Distributors with stock: 11

Avnet America (2)

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125.88 USD
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10000.77 USD
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00.00 USD
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Avnet Europe (1)

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Chip One Stop (7)

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Conrad (1)

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Digi-Key (9)

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Distrelec (1)

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Element14 (4)

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Farnell Element14 (4)

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Newark Electronics (2)

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RS Components (3)

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Texas Instruments (5)

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Available Distributors without stock: 1

Avnet Asia (0)

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Digi-Key

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Verical

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35000.62 €
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10000.77 $
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10001.03 €
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11.03 €
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Newark element14

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Texas Instruments

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Farnell element14

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Table with equivalents and alternatives

The following Buck Controller are similar to LM3485-Q1. Or, compare LM3485-Q1 side-by-side with other Buck Controller via the Comparison function.

Variation Compare Product Manufacturer Package
0% LM3489-Q1 LM3489-Q1 product overviewLM3489-Q1 product overview Texas Instruments VSSOP-8

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of LM3485-Q1.

V-IN max. 35 V, I-OUT 4 A, V-OUT min. 1.242 V, Frequency typ. 400 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
74404064018 1.8 5.0 8.4 12.00 6 x 6 x 4.5
74404064022 2.2 4.6 7.4 14.00 6 x 6 x 4.5
74404084022 2.2 5.2 7.8 12.00 8 x 8 x 4.2
7440650022 2.2 6.2 5.9 11.00 10 x 10 x 3.1
7440660022 2.2 6.7 6.8 7.70 10 x 10 x 4.1
744071022 2.2 5.4 6.3 10.00 8 x 8 x 4.6
744310200 2.0 6.5 9.0 14.20 7 x 6.9 x 3.3
744314200 2.0 11.5 9.0 5.85 7 x 6.9 x 5
744316220 2.2 7.5 7.5 11.30 5.5 x 5.3 x 4.3
74438356018 1.8 4.6 6.5 24.50 4.1 x 4.1 x 2.1
74438356022 2.2 4.7 6.2 29.00 4.1 x 4.1 x 2.1
7447713022 2.2 5.1 8.5 16.80 10 x 10 x 3
7447714022 2.2 8.6 9.5 6.80 10 x 10 x 5
7447715002 2.5 6.8 8.5 8.50 12 x 12 x 4.5
744772022 2.2 6.0 8.0 7.25 7.8 x 7.8 x 10
744777002 2.2 6.0 6.5 13.00 7.3 x 7.3 x 4.5
7447779002 2.2 4.2 6.0 16.00 7.3 x 7.3 x 4.5
744778002 2.2 4.0 4.8 14.00 7.3 x 7.3 x 3.4
7447789002 2.2 4.0 4.8 19.00 7.3 x 7.3 x 3.5
784774022 2.2 4.6 8.2 26.00 5.2 x 5.8 x 4.85
784774027 2.7 4.0 8.0 32.00 5.2 x 5.8 x 4.85
784775022 2.2 6.0 6.0 8.00 7 x 7.8 x 5.5
784776022 2.2 7.0 8.0 7.00 9 x 10 x 5.9
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