R1275 Buck Converter overview

Description

Manufacturer

Parameter overview and features with replacement search

For the R1275 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.

Parameter	Value	Replacement Search Filter
V-IN min.	4.50 V
V-IN max.	36.00 V
I-OUT?	2.00 A
V-OUT min.	3.30 V
V-OUT max.	5.00 V
V-OUT	adjustable V
V-OUT programmable
sync/non-sync	sync
Frequency typ.	2000 kHz
Frequency	adjustable
Frequency selectable
ext.clock sync.
Frequency adj./ ext.clock min.	1800 kHz
Frequency adj./ ext.clock max	2200 kHz
Softstart
Softstart adjustable
Tracking
PG/Power OK
Quiescent current max.	1350 µA
Operating min.	-40 °C
Operating max.	105 °C
Junction min.	-40 °C
Junction max.	125 °C
thermal shutdown typ.	160 °C
Inductor size typ.	2.20 µH
Inductor suggested by Würth Elektronik
Automotive AEC-Q100
Light-Load-Mode
Topology	Buck
Peak Efficiency	91 %
Component count min.	19
current limit adjustable
Nr.of packages	1
CSP
SC70
SOT
MSOP
QFN/DFN
SO/SOIC
SOP	HSOP-18
DIP
TO
DDPAK

R1275 Datasheet

Link to the most up-to-date R1275 datasheet and the product page for EVM, tools and support information.

R1275

R1275 Sample stock and distributor price breaks

R1275 prices and online available distributors.

Available Distributors with stock: 2

Digi-Key (10)

Product

Stock

Price

Buy

51338-0974

1250

625	2.77 USD
1250	2.36 USD
1875	2.28 USD
3125	2.20 USD

Variation	Compare	Product		Manufacturer	Package
0%		LT3690	LT3690 product overview	Linear Technology	QFN-26
0%		LT8610	LT8610 product overview	Linear Technology	MSOP-16
0%		LT8611	LT8611 product overview	Linear Technology	QFN-24
0%		MP4473	MP4473 product overview	MPS	QFN-20
0%		MP4570	MP4570 product overview	MPS	TSSOP-20
0%		MPQ4473	MPQ4473 product overview	MPS	QFN-20
0%		MPQ4473-AEC1	MPQ4473-AEC1 product overview	MPS	QFN-20
0%		MPQ4570	MPQ4570 product overview	MPS	TSSOP-20
0%		LM43602	LM43602 product overview	Texas Instruments	HTSSOP-16
0%		LM43602-Q1	LM43602-Q1 product overview	Texas Instruments	HTSSOP-16
0%		LM43603	LM43603 product overview	Texas Instruments	HTSSOP-16
0%		LM43603-Q1	LM43603-Q1 product overview	Texas Instruments	HTSSOP-16
0%		LM46002	LM46002 product overview	Texas Instruments	HTSSOP-16
0%		LM46002-Q1	LM46002-Q1 product overview	Texas Instruments	HTSSOP-16
0%		R1275	R1275 product overview	Ricoh	HSOP-18
50%		ER3110	ER3110 product overview	Altera	DFN-12
50%		LM43601	LM43601 product overview	Texas Instruments	HTSSOP-16
50%		LM43601-Q1	LM43601-Q1 product overview	Texas Instruments	HTSSOP-16
50%		LM46001	LM46001 product overview	Texas Instruments	HTSSOP-16
50%		LM46001-Q1	LM46001-Q1 product overview	Texas Instruments	HTSSOP-16
50%		ISL85410	ISL85410 product overview	Intersil	DFN-12

Order Code	Spec	L (µH)	I_R (A)	I_SAT (A)	R_DC (mΩ)	L x W x H (mm)
74404042015		1.5	3.0	4.3	31.00	4 x 4 x 1.8
74404042022		2.2	2.2	3.4	42.00	4 x 4 x 1.8
74404052022		2.2	3.0	3.6	31.60	5 x 5 x 2
7440420018		1.8	2.4	2.4	40.00	4.8 x 4.8 x 2
7440430018		1.8	2.7	2.5	20.00	4.8 x 4.8 x 3
74405024015		1.5	2.1	3.5	60.00	2.5 x 2 x 1.2
74405031015		1.5	2.2	4.1	64.00	3 x 3 x 1.2
7440520018		1.8	2.6	3.0	30.00	5.8 x 5.8 x 2
744052002		2.5	2.4	2.7	20.00	5.8 x 5.8 x 2
744053002		2.6	3.0	2.7	20.00	5.8 x 5.8 x 3
74406042015		1.5	3.9	3.1	25.00	4.8 x 4.8 x 2
74406042022		2.2	3.4	2.7	33.00	4.8 x 4.8 x 2
7440620015		1.5	4.3	4.0	10.00	6.8 x 6.8 x 2.5
744062002		2.2	3.4	2.7	10.00	6.8 x 6.8 x 2.5
7440680017		1.7	2.5	2.4	41.00	8 x 8 x 1.2
7440690016		1.6	3.1	3.3	29.00	8 x 8 x 1.5
7440690022		2.2	2.8	2.9	35.00	8 x 8 x 1.5
7440700022		2.2	4.6	3.2	17.00	8 x 8 x 2
74408941022		2.2	2.1	3.6	66.08	4.8 x 4.8 x 2.1
74408942022		2.2	2.5	4.0	38.00	4.8 x 4.8 x 3
74408943022		2.2	3.0	4.6	26.00	4.8 x 4.8 x 4.1
74437321015		1.5	3.0	4.0	55.00	4.45 x 4.06 x 1.2
74437321022		2.2	2.2	4.8	69.20	4.45 x 4.06 x 1.2
74438324015		1.5	2.2	3.7	82.00	2.5 x 2 x 1.2
74438336015		1.5	3.7	4.5	33.00	3 x 3 x 2
74438336022		2.2	2.4	4.3	67.00	3 x 3 x 2
7447462022		2.2	6.3	4.3	10.00	5.5 x 5.5 x 8.5
744773018		1.8	2.7	3.6	28.00	4 x 4.5 x 3.48
744773022		2.2	2.5	3.4	34.00	4 x 4.5 x 3.48
744778002		2.2	4.0	4.8	14.00	7.3 x 7.3 x 3.4
7447785002		2.2	2.9	3.3	43.00	5.9 x 6.2 x 3.3
7447786002		2.2	3.5	4.0	40.00	5.9 x 6.2 x 5.1
7447789002		2.2	4.0	4.8	19.00	7.3 x 7.3 x 3.5
74479299222		2.2	2.1	3.5	85.00	3.2 x 2.5 x 1.2
78438324015		1.5	2.2	3.7	82.00	2.5 x 2 x 1.2
78438336015		1.5	3.7	4.5	33.00	3 x 3 x 2
78438336022		2.2	2.4	4.3	67.00	3 x 3 x 2
784773018		1.8	2.7	3.6	28.00	4 x 4.5 x 3.5
784773022		2.2	2.5	3.4	34.00	4 x 4.5 x 3.5

Product	Stock	Price	Buy
R1275/05UK	25		Buy Now
R1275/1UAK	25		Buy Now
R1275-1UAKLAZ	25		Buy Now
R1275/1UAS	25		Buy Now
R1275-1UASLAZ	25		Buy Now
R1275/1UK	25		Buy Now
R1275/2UAK	25		Buy Now
R1275-2UAKLAZ	25		Buy Now
R1275-2UASLAZ	25		Buy Now
R1275/2UK	25		Buy Now
R1275/2US	25		Buy Now
R1275/2UVK	25		Buy Now
R1275/3UAK	25		Buy Now
R1275-3UAKLAZ	25		Buy Now
R1275-3UASLAZ	25		Buy Now
R1275/3UK	25		Buy Now
R1275/4UAK	25		Buy Now
R1275-4UAKLAZ	25		Buy Now
R1275-4UASLAZ	25		Buy Now
R1275/4UK	25		Buy Now
R1275/5UK	25		Buy Now

R1275 Buck Converter overview

Description

Parameter overview and features with replacement search

R1275 Datasheet

R1275 Sample stock and distributor price breaks

Available Distributors with stock: 2

Digi-Key (10)

Penn Elcom (21)

Available Distributors without stock: 2

Allied Electronics, Inc (0)

TTI (0)

Available Distributors with stock: 7

Digi-Key

Newark element14

Bisco Industries

basicEparts

element14 Asia-Pacific

Farnell element14

Chip One Exchange

Available Distributors without stock: 4

Avnet

Allied Electronics

Mouser Electronics

TTI

List of equivalents and alternatives

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