Datasheet Texas Instruments LP2997 — 数据表

制造商	Texas Instruments
系列	LP2997

DDR-II终端稳压器

数据表

PDF, 1.3 Mb, 修订版: F, 档案已发布: Apr 4, 2013

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	LP2997M	LP2997M/NOPB	LP2997MR	LP2997MR/NOPB	LP2997MRX	LP2997MRX/NOPB	LP2997MX/NOPB
Lifecycle Status	NRND (Not recommended for new designs)	Active (Recommended for new designs)	NRND (Not recommended for new designs)	Active (Recommended for new designs)	NRND (Not recommended for new designs)	Active (Recommended for new designs)	Active (Recommended for new designs)
Manufacture's Sample Availability	No	Yes	Yes	No	No	No	Yes

	LP2997M	LP2997M/NOPB	LP2997MR	LP2997MR/NOPB	LP2997MRX	LP2997MRX/NOPB	LP2997MX/NOPB
N	1	2	3	4	5	6	7
Pin	8	8	8	8	8	8	8
Package Type	D	D	DDA	DDA	DDA	DDA	D
Industry STD Term	SOIC	SOIC	HSOIC	HSOIC	HSOIC	HSOIC	SOIC
JEDEC Code	R-PDSO-G	R-PDSO-G	R-PDSO-G	R-PDSO-G	R-PDSO-G	R-PDSO-G	R-PDSO-G
Package QTY	95	95	95	95		2500	2500
Carrier	TUBE	TUBE	TUBE	TUBE	LARGE T&R	LARGE T&R	LARGE T&R
Device Marking	M	L2997	L2997	MR	MR	L2997	L2997
Width (mm)	3.91	3.91	3.9	3.9	3.9	3.9	3.91
Length (mm)	4.9	4.9	4.89	4.89	4.89	4.89	4.9
Thickness (mm)	1.58	1.58	1.48	1.48	1.48	1.48	1.58
Pitch (mm)	1.27	1.27	1.27	1.27	1.27	1.27	1.27
Max Height (mm)	1.75	1.75	1.7	1.7	1.7	1.7	1.75
Mechanical Data	下载	下载	下载	下载	下载	下载	下载

Parameters / Models	LP2997M	LP2997M/NOPB	LP2997MR	LP2997MR/NOPB	LP2997MRX	LP2997MRX/NOPB	LP2997MX/NOPB
Control Mode	N/A	N/A	N/A	N/A	N/A	N/A	N/A
DDR Memory Type	DDR2	DDR2	DDR2	DDR2	DDR2	DDR2	DDR2
Iout VTT(Max), A	0.5	0.5	0.5	0.5	0.5	0.5	0.5
Iq(Typ), mA	0.32	0.32	0.32	0.32	0.32	0.32	0.32
Operating Temperature Range, C	0 to 125	0 to 125	0 to 125	0 to 125	0 to 125	0 to 125	0 to 125
Output	VREF,VTT	VREF,VTT	VREF,VTT	VREF,VTT	VREF,VTT	VREF,VTT	VREF,VTT
Package Group	SOIC	SOIC	SO PowerPAD	SO PowerPAD	SO PowerPAD	SO PowerPAD	SOIC
Package Size: mm2:W x L, PKG	8SOIC: 29 mm2: 6 x 4.9(SOIC)	8SOIC: 29 mm2: 6 x 4.9(SOIC)	8SO PowerPAD: 29 mm2: 6 x 4.9(SO PowerPAD)	8SO PowerPAD: 29 mm2: 6 x 4.9(SO PowerPAD)	8SO PowerPAD: 29 mm2: 6 x 4.9(SO PowerPAD)	8SO PowerPAD: 29 mm2: 6 x 4.9(SO PowerPAD)	8SOIC: 29 mm2: 6 x 4.9(SOIC)
Rating	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog
Regulator Type	Linear Regulator	Linear Regulator	Linear Regulator	Linear Regulator	Linear Regulator	Linear Regulator	Linear Regulator
Special Features	Shutdown Pin for S3	Shutdown Pin for S3	Shutdown Pin for S3	Shutdown Pin for S3	Shutdown Pin for S3	Shutdown Pin for S3	Shutdown Pin for S3
Vin Bias(Max), V	5.5	5.5	5.5	5.5	5.5	5.5	5.5
Vin Bias(Min), V	2.2	2.2	2.2	2.2	2.2	2.2	2.2
Vin(Max), V	5.5	5.5	5.5	5.5	5.5	5.5	5.5
Vin(Min), V	1.8	1.8	1.8	1.8	1.8	1.8	1.8
Vout VTT(Min), V	0.9	0.9	0.9	0.9	0.9	0.9	0.9

	LP2997M	LP2997M/NOPB	LP2997MR	LP2997MR/NOPB	LP2997MRX	LP2997MRX/NOPB	LP2997MX/NOPB
RoHS	See ti.com	Compliant	See ti.com	Compliant	Not Compliant	Compliant	Compliant

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AN-1254 DDR-SDRAM Termination Simplified Using a Linear Regulator (Rev. A)
PDF, 66 Kb, 修订版: A, 档案已发布: May 6, 2013
This applications report describes the use and benefits of the LP2995 for DDR-DRAM Termination.
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Limiting DDR Termination RegulatorsвЂ™ Inrush Current
PDF, 772 Kb, 档案已发布: Aug 23, 2016
The output voltage of DDR termination regulators tends to rise quickly after their VDDQ line is enabled. Most DDR terminators are specifically designed for fast start-up. They also require bulky output capacitors for a stable output voltage. This often results in a significant inrush current from DDR terminator voltage supply to charge the output capacitors and to provide curre

系列: LP2997 (7)