BD9673 Buck Converter overview

Description

Manufacturer
 
Category
Sub-Category

BD9673 is a 42.00 V non-sync Buck Converter from with 1.50 A output current. The maximum 42.00 V input voltage can be regulated down into a 1.00 V to 29.40 V output voltage.

It requires are a typical inductor size of 15.00 µH, a typical external component count of 9 and achieves a peak efficiency of 91 %. Further BD9673 characteristics are a fixed 300 kHz switching frequency and 1 available package option(s): HTSOP-8 .

For the BD9673 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.

ParameterValueReplacement
Search Filter
V-IN min. 7.00 V
V-IN max. 42.00 V
I-OUT? 1.50 A
V-OUT min. 1.00 V
V-OUT max. 29.40 V
V-OUT adjustable V
V-OUT programmable no
sync/non-sync non-sync
Frequency typ. 300 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. 2000 µA
Operating min. -40 °C
Operating max. 105 °C
Junction min.
Junction max.
thermal shutdown typ.
Inductor size typ. 15.00 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100 no
Light-Load-Mode no
Topology Buck
Peak Efficiency 91 %
Component count min. 9
current limit adjustable no
Nr.of packages 1
CSP
SC70
SOT
MSOP
QFN/DFN
SO/SOIC
SOP HTSOP-8
DIP
TO
DDPAK

BD9673 Datasheet

Link to the most up-to-date BD9673 datasheet and the product page for EVM, tools and support information.

BD9673

BD9673 Sample stock and distributor price breaks

BD9673 prices and online available distributors.

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List of equivalents and alternatives

The following DC/DC Buck Converter are similar to BD9673. Optional, compare BD9673 side-by-side with other Buck Converter via the Comparison function.

Variation Compare Product Manufacturer Package
0% ACT4513 ACT4513 product overviewACT4513 product overview Active Semi SOP-8
0% ACT4514 ACT4514 product overviewACT4514 product overview Active Semi SOP-8
0% ACT4515 ACT4515 product overviewACT4515 product overview Active Semi SOP-8
0% ACT4523 ACT4523 product overviewACT4523 product overview Active Semi SOP-8EP
0% A4403 A4403 product overviewA4403 product overview Allegro QFN-16
0% IFX91041EJ V IFX91041EJ V product overviewIFX91041EJ V product overview Infineon PG-DSO-8
0% TLE8366 TLE8366 product overviewTLE8366 product overview Infineon DSO-8
0% MAX16936 MAX16936 product overviewMAX16936 product overview Maxim TQFN-32
0% MP2492 MP2492 product overviewMP2492 product overview MPS SOIC-8E, QFN-10
0% MP2494 MP2494 product overviewMP2494 product overview MPS SOIC-8E
0% MP24943 MP24943 product overviewMP24943 product overview MPS SOIC-8E
0% MP2495 MP2495 product overviewMP2495 product overview MPS SOIC-16
0% MP2497 MP2497 product overviewMP2497 product overview MPS SOIC-8E
0% MP2497-A MP2497-A product overviewMP2497-A product overview MPS SOIC-8E
0% NJW4154 NJW4154 product overviewNJW4154 product overview New Japan Radio TO252-5, HSOP-8
0% BD9876 BD9876 product overviewBD9876 product overview Rohm HTSOP-8
0% ST1S14 ST1S14 product overviewST1S14 product overview ST HSOP-8
10% MAX16977 MAX16977 product overviewMAX16977 product overview Maxim TSSOP-EP-16, TQFN-16
10% MP2467 MP2467 product overviewMP2467 product overview MPS SOIC-8E
10% MP2490DQ MP2490DQ product overviewMP2490DQ product overview MPS SOIC-8, QFN-10
10% MP2490DS MP2490DS product overviewMP2490DS product overview MPS SOIC-8, QFN-10
10% MP2490CP MP2490CP product overviewMP2490CP product overview MPS SOIC-8, QFN-10
10% MP2493 MP2493 product overviewMP2493 product overview MPS SOIC-8E
10% MPQ2490 MPQ2490 product overviewMPQ2490 product overview MPS QFN-10
10% NCV890200 NCV890200 product overviewNCV890200 product overview ON Semiconductor SOIC-8
10% NCV890201 NCV890201 product overviewNCV890201 product overview ON Semiconductor DFN-10
10% NCV890230 NCV890230 product overviewNCV890230 product overview ON Semiconductor SOIC-8
10% NCV890231 NCV890231 product overviewNCV890231 product overview ON Semiconductor SOIC-8
10% A7985A A7985A product overviewA7985A product overview ST HSOP-8
25% ACT4501 ACT4501 product overviewACT4501 product overview Active Semi SOP-8
25% AOZ1240AI AOZ1240AI product overviewAOZ1240AI product overview Alpha Omega SOIC-8
25% AOZ1282CI AOZ1282CI product overviewAOZ1282CI product overview Alpha Omega SOT23-6
25% AOZ1282DI AOZ1282DI product overviewAOZ1282DI product overview Alpha Omega DFN-8-EP
25% IXD3250-3 IXD3250-3 product overviewIXD3250-3 product overview IXYS SOP-8
25% IXD3250-5 IXD3250-5 product overviewIXD3250-5 product overview IXYS SOP-8
25% IXD3251-3 IXD3251-3 product overviewIXD3251-3 product overview IXYS SOP-8
25% IXD3251-5 IXD3251-5 product overviewIXD3251-5 product overview IXYS SOP-8
25% LT1936 LT1936 product overviewLT1936 product overview Linear Technology MSOP-8
25% LT1976 LT1976 product overviewLT1976 product overview Linear Technology TSSOP-16
25% LT1977 LT1977 product overviewLT1977 product overview Linear Technology TSSOP-16
25% LT3493 LT3493 product overviewLT3493 product overview Linear Technology DFN-6
25% LT3493-3 LT3493-3 product overviewLT3493-3 product overview Linear Technology DFN-6
25% MAX5082 MAX5082 product overviewMAX5082 product overview Maxim TQFN-16
25% MAX5083 MAX5083 product overviewMAX5083 product overview Maxim TQFN-16
25% MAX5090 MAX5090 product overviewMAX5090 product overview Maxim TQFN-16
25% CS51411 CS51411 product overviewCS51411 product overview ON Semiconductor SOIC-8, DFN-18
25% CS51412 CS51412 product overviewCS51412 product overview ON Semiconductor SOIC-8
25% CS51413 CS51413 product overviewCS51413 product overview ON Semiconductor SOIC-8, DFN-18
25% CS51414 CS51414 product overviewCS51414 product overview ON Semiconductor SOIC-8
25% NCV51411 NCV51411 product overviewNCV51411 product overview ON Semiconductor SOIC-8, DFN-18
25% NCV8842 NCV8842 product overviewNCV8842 product overview ON Semiconductor DFN-18
25% NCV8843 NCV8843 product overviewNCV8843 product overview ON Semiconductor SOIC-8, DFN-18
25% NCV890100 NCV890100 product overviewNCV890100 product overview ON Semiconductor SOIC-8, DFN-8
25% NCV890101 NCV890101 product overviewNCV890101 product overview ON Semiconductor DFN-10
25% NCV890130 NCV890130 product overviewNCV890130 product overview ON Semiconductor SOIC-8, DFN-8
25% NCV890131 NCV890131 product overviewNCV890131 product overview ON Semiconductor DFN-10
25% BD9870 BD9870 product overviewBD9870 product overview Rohm TO252-5
25% BD9873 BD9873 product overviewBD9873 product overview Rohm TO220-5
25% LM2593HV LM2593HV product overviewLM2593HV product overview Texas Instruments TO-263, TO-220-7
25% TPS5420 TPS5420 product overviewTPS5420 product overview Texas Instruments SOIC-8
25% TPS5420-Q1 TPS5420-Q1 product overviewTPS5420-Q1 product overview Texas Instruments SOIC-8
25% R1240x R1240x product overviewR1240x product overview Ricoh DFN-10, SOT23-6
25% R1244N R1244N product overviewR1244N product overview Ricoh SOT23-6
25% R1245-A-B R1245-A-B product overviewR1245-A-B product overview Ricoh HSOP-8, DFN-10, SOT23-6
25% R1245-C-D R1245-C-D product overviewR1245-C-D product overview Ricoh HSOP-8, DFN-10, SOT23-6
25% R1245-E-F R1245-E-F product overviewR1245-E-F product overview Ricoh HSOP-8, DFN-10, SOT23-6
25% R1245-G-H R1245-G-H product overviewR1245-G-H product overview Ricoh HSOP-8, DFN-10, SOT23-6
25% R1243-A-B R1243-A-B product overviewR1243-A-B product overview Ricoh HSOP-8, DFN-10
25% R1243-C-D R1243-C-D product overviewR1243-C-D product overview Ricoh HSOP-8, DFN-10
25% XC9250-3 XC9250-3 product overviewXC9250-3 product overview Torex SOP-8
25% XC9250-5 XC9250-5 product overviewXC9250-5 product overview Torex SOP-8
25% XC9251-3 XC9251-3 product overviewXC9251-3 product overview Torex SOP-8
25% XC9251-5 XC9251-5 product overviewXC9251-5 product overview Torex SOP-8
25% XC9270-C XC9270-C product overviewXC9270-C product overview Torex SOP-8
25% XC9270-D XC9270-D product overviewXC9270-D product overview Torex SOP-8
25% XC9271-C XC9271-C product overviewXC9271-C product overview Torex SOP-8
25% XC9271-D XC9271-D product overviewXC9271-D product overview Torex SOP-8
25% R1245-A-B-AEC R1245-A-B-AEC product overviewR1245-A-B-AEC product overview Ricoh HSOP-8
25% R1245-C-D-AEC R1245-C-D-AEC product overviewR1245-C-D-AEC product overview Ricoh HSOP-8
25% R1245-E-F-AEC R1245-E-F-AEC product overviewR1245-E-F-AEC product overview Ricoh HSOP-8
25% R1245-G-H-AEC R1245-G-H-AEC product overviewR1245-G-H-AEC product overview Ricoh HSOP-8
50% AOZ1280CI AOZ1280CI product overviewAOZ1280CI product overview Alpha Omega SOT23-6
50% ADP2300 ADP2300 product overviewADP2300 product overview Analog Devices TSOT23-6
50% ADP2301 ADP2301 product overviewADP2301 product overview Analog Devices TSOT23-6
50% AP5100 AP5100 product overviewAP5100 product overview Diodes
50% ISL85001 ISL85001 product overviewISL85001 product overview Intersil DFN-12
50% LT3503 LT3503 product overviewLT3503 product overview Linear Technology DFN-6
50% MAX15014 MAX15014 product overviewMAX15014 product overview Maxim TQFN-36
50% MAX15015 MAX15015 product overviewMAX15015 product overview Maxim TQFN-36
50% MAX15016 MAX15016 product overviewMAX15016 product overview Maxim TQFN-36
50% MAX15017 MAX15017 product overviewMAX15017 product overview Maxim TQFN-36
50% MAX16975 MAX16975 product overviewMAX16975 product overview Maxim QSOP-EP-16
50% MAX5035 MAX5035 product overviewMAX5035 product overview Maxim PDIP-8, SOIC-8
50% MAX5080 MAX5080 product overviewMAX5080 product overview Maxim TQFN-32
50% MAX5081 MAX5081 product overviewMAX5081 product overview Maxim TQFN-16
50% MP2452 MP2452 product overviewMP2452 product overview MPS QFN-8
50% NJW4153 NJW4153 product overviewNJW4153 product overview New Japan Radio ESON-8
50% LA5757TP LA5757TP product overviewLA5757TP product overview ON Semiconductor TP5HFA
50% AAT1185 AAT1185 product overviewAAT1185 product overview Skyworks TSOPJW-14
50% LM22675 LM22675 product overviewLM22675 product overview Texas Instruments SO-8
50% LM22675-Q1 LM22675-Q1 product overviewLM22675-Q1 product overview Texas Instruments SO-8
50% LM2590HV LM2590HV product overviewLM2590HV product overview Texas Instruments TO-263, TO-220-7
50% LM2590HV-AQ-Q1 LM2590HV-AQ-Q1 product overviewLM2590HV-AQ-Q1 product overview Texas Instruments TO-263, TO-220-7
50% LM2598 LM2598 product overviewLM2598 product overview Texas Instruments
50% LM2672 LM2672 product overviewLM2672 product overview Texas Instruments PDIP-8, SOIC-8, WSON-16
50% LM2734X LM2734X product overviewLM2734X product overview Texas Instruments SOT23-6
50% LM2734X-Q1 LM2734X-Q1 product overviewLM2734X-Q1 product overview Texas Instruments SOT23-6
50% LM2734Y LM2734Y product overviewLM2734Y product overview Texas Instruments SOT23-6
50% LM2734Y-Q1 LM2734Y-Q1 product overviewLM2734Y-Q1 product overview Texas Instruments SOT23-6
50% LM2734Z LM2734Z product overviewLM2734Z product overview Texas Instruments WQFN-6, SOT23-6
50% LM2734Z-Q1 LM2734Z-Q1 product overviewLM2734Z-Q1 product overview Texas Instruments WQFN-6, SOT23-6
50% LMR12010X LMR12010X product overviewLMR12010X product overview Texas Instruments SOT23-6
50% LMR12010Y LMR12010Y product overviewLMR12010Y product overview Texas Instruments SOT23-6
50% TPS5410 TPS5410 product overviewTPS5410 product overview Texas Instruments SOIC-8
50% TPS5410-Q1 TPS5410-Q1 product overviewTPS5410-Q1 product overview Texas Instruments SOIC-8
50% BD9E151 BD9E151 product overviewBD9E151 product overview Rohm VSON-8

Inductor suggestions

Below you can find matching inductors from Wuerth Elektronik calculated on the maximum parameters of BD9673.

V-IN max. 42 V, I-OUT 1.5 A, V-OUT min. 1 V, Frequency typ. 300 kHz
Order Code Spec L (µH) IR (A) ISAT (A) RDC (mΩ) L x W x H (mm)
74404052056 5.6 2.1 2.6 67.50 5 x 5 x 2
74404052068 6.8 1.9 2.4 82.70 5 x 5 x 2
74404052075 7.5 1.7 2.1 96.80 5 x 5 x 2
74404054068 6.8 2.5 3.2 43.00 5 x 5 x 4
74404063068 6.8 2.4 2.8 47.00 6 x 6 x 2.8
74404063082 8.2 2.3 2.5 55.00 6 x 6 x 2.8
744052005 5.0 1.7 1.8 50.00 5.8 x 5.8 x 2
744053005 5.3 2.3 1.9 30.00 5.8 x 5.8 x 3
744062005 5.0 2.2 2.0 40.00 6.8 x 6.8 x 2.5
744062006 6.2 1.9 1.8 40.00 6.8 x 6.8 x 2.5
7440650068 6.8 4.2 3.6 25.00 10 x 10 x 3.1
7440650082 8.2 3.8 2.8 28.50 10 x 10 x 3.1
7440700056 5.6 2.6 2.0 47.00 8 x 8 x 2
7440700068 6.8 2.4 1.8 56.00 8 x 8 x 2
74408943068 6.8 2.0 2.7 51.00 4.8 x 4.8 x 4.1
74408943082 8.2 1.8 2.2 70.00 4.8 x 4.8 x 4.1
74437321056 5.6 1.6 2.7 180.00 4.45 x 4.06 x 1.2
74437324068 6.8 1.8 3.5 150.00 4.45 x 4.06 x 2
74437324082 8.2 1.6 2.8 158.00 4.45 x 4.06 x 2
74438336068 6.8 1.6 2.9 168.00 3 x 3 x 2
7447462068 6.8 3.3 3.0 27.00 5.5 x 5.5 x 8.5
744773056 5.6 1.6 2.4 69.00 4 x 4.5 x 3.5
744773068 6.8 1.5 2.1 76.00 4 x 4.5 x 3.5
744773082 8.2 1.5 1.8 116.00 4 x 4.5 x 3.5
7447779006 6.8 2.9 3.3 33.00 7.3 x 7.3 x 4.5
7447779008 8.2 2.7 3.0 47.00 7.3 x 7.3 x 4.5
7447785006 6.8 2.3 2.0 79.00 5.9 x 6.2 x 3.3
7447786006 6.8 2.5 2.3 62.00 5.9 x 6.2 x 5.1
7447786008 8.2 2.3 2.1 66.00 5.9 x 6.2 x 5.1
7447789006 6.8 2.5 2.8 41.50 7.3 x 7.3 x 3.5
744779068 6.8 2.2 2.8 27.00 6 x 6 x 6.5
744787068 6.8 3.0 3.0 27.00 7.8 x 7 x 5
744787082 8.2 2.7 2.8 33.00 7.8 x 7 x 5
784773056 5.6 1.6 2.4 69.00 4 x 4.5 x 3.5
784773068 6.8 1.5 2.1 76.00 4 x 4.5 x 3.5
784773082 8.2 1.5 1.8 116.00 4 x 4.5 x 3.5
784775082 8.2 3.2 3.2 24.00 7 x 7.8 x 5.5
784777068 6.8 2.2 3.2 83.00 7.3 x 7.3 x 4.3
784777082 8.2 2.0 2.8 97.50 7.3 x 7.3 x 4.3
784778068 6.8 2.3 2.5 79.00 7.3 x 7.3 x 3.5
784778082 8.2 2.2 2.4 86.00 7.3 x 7.3 x 3.5
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