Datasheet Texas Instruments LM3940 — 数据表

制造商	Texas Instruments
系列	LM3940

用于5V至3.3V转换的1A低压降稳压器

数据表

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PDF, 1.9 Mb, 修订版: G, 档案已发布: Feb 16, 2015

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价格

状态

	LM3940IMP-3.3	LM3940IMP-3.3/NOPB	LM3940IMPX-3.3	LM3940IMPX-3.3/NOPB	LM3940IS-3.3	LM3940IS-3.3/NOPB	LM3940ISX-3.3	LM3940ISX-3.3/NOPB	LM3940IT-3.3	LM3940IT-3.3/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)	NRND (Not recommended for new designs)	Active (Recommended for new designs)	NRND (Not recommended for new designs)	Active (Recommended for new designs)
Manufacture's Sample Availability	Yes	No	No	No	Yes	Yes	No	Yes	No	Yes

打包

	LM3940IMP-3.3	LM3940IMP-3.3/NOPB	LM3940IMPX-3.3	LM3940IMPX-3.3/NOPB	LM3940IS-3.3	LM3940IS-3.3/NOPB	LM3940ISX-3.3	LM3940ISX-3.3/NOPB	LM3940IT-3.3	LM3940IT-3.3/NOPB
N	1	2	3	4	5	6	7	8	9	10
Pin	4	4	4	4	3	3	3	3	3	3
Package Type	DCY	DCY	DCY	DCY	KTT	KTT	KTT	KTT	NDE	NDE
Industry STD Term	SOT-223	SOT-223	SOT-223	SOT-223	TO-263	TO-263	TO-263	TO-263	TO-220	TO-220
JEDEC Code	R-PDSO-G	R-PDSO-G	R-PDSO-G	R-PDSO-G	R-PSFM-G	R-PSFM-G	R-PSFM-G	R-PSFM-G	R-MSFM-P	R-MSFM-P
Package QTY	1000	1000	2000	2000	45	45	500	500	45	45
Carrier	LARGE T&R	LARGE T&R	LARGE T&R	LARGE T&R	TUBE	TUBE	LARGE T&R	LARGE T&R	TUBE	TUBE
Device Marking	L52B	L52B	L52B	L52B	-3.3 P+	-3.3 P+	-3.3 P+	LM3940IS	-3.3 P+	-3.3 P+
Width (mm)	3.5	3.5	3.5	3.5	8.41	8.41	8.41	8.41	10.16	10.16
Length (mm)	6.5	6.5	6.5	6.5	10.18	10.18	10.18	10.18	14.986	14.986
Thickness (mm)	1.6	1.6	1.6	1.6	4.44	4.44	4.44	4.44	4.572	4.572
Pitch (mm)	2.3	2.3	2.3	2.3	2.54	2.54	2.54	2.54	2.54	2.54
Max Height (mm)	1.8	1.8	1.8	1.8	4.83	4.83	4.83	4.83	4.7	4.7
Mechanical Data	下载	下载	下载	下载	下载	下载	下载	下载	下载	下载

参数化

Parameters / Models	LM3940IMP-3.3	LM3940IMP-3.3/NOPB	LM3940IMPX-3.3	LM3940IMPX-3.3/NOPB	LM3940IS-3.3	LM3940IS-3.3/NOPB	LM3940ISX-3.3	LM3940ISX-3.3/NOPB	LM3940IT-3.3	LM3940IT-3.3/NOPB
Accuracy, %	2.5	2.5	2.5	2.5	2.5	2.5	2.5	2.5	2.5	2.5
Fixed Output Options, V	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3
Iout(Max), A	1	1	1	1	1	1	1	1	1	1
Iq(Typ), mA	0.11	0.11	0.11	0.11	0.11	0.11	0.11	0.11	0.11	0.11
Noise, uVrms	150	150	150	150	150	150	150	150	150	150
Operating Temperature Range, C	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125
Output Capacitor Type	Non-Ceramic	Non-Ceramic	Non-Ceramic	Non-Ceramic	Non-Ceramic	Non-Ceramic	Non-Ceramic	Non-Ceramic	Non-Ceramic	Non-Ceramic
Output Options	Fixed Output	Fixed Output	Fixed Output	Fixed Output	Fixed Output	Fixed Output	Fixed Output	Fixed Output	Fixed Output	Fixed Output
PSRR @ 100KHz, dB	32	32	32	32	32	32	32	32	32	32
Package Group	SOT-223	SOT-223	SOT-223	SOT-223	DDPAK/TO-263	DDPAK/TO-263	DDPAK/TO-263	DDPAK/TO-263	TO-220	TO-220
Package Size: mm2:W x L, PKG	4SOT-223: 46 mm2: 7 x 6.5(SOT-223)	4SOT-223: 46 mm2: 7 x 6.5(SOT-223)	4SOT-223: 46 mm2: 7 x 6.5(SOT-223)	4SOT-223: 46 mm2: 7 x 6.5(SOT-223)	3DDPAK/TO-263: 155 mm2: 15.24 x 10.16(DDPAK/TO-263)	3DDPAK/TO-263: 155 mm2: 15.24 x 10.16(DDPAK/TO-263)	3DDPAK/TO-263: 155 mm2: 15.24 x 10.16(DDPAK/TO-263)	3DDPAK/TO-263: 155 mm2: 15.24 x 10.16(DDPAK/TO-263)	See datasheet (TO-220)	See datasheet (TO-220)
Rating	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog
Regulated Outputs	1	1	1	1	1	1	1	1	1	1
Special Features	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A	N/A
Thermal Resistance ОёJA, В°C/W	23	23	23	23	23	23	23	23	23	23
Vdo(Typ), mV	310	310	310	310	310	310	310	310	310	310
Vin(Max), V	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5	5.5
Vin(Min), V	4.5	4.5	4.5	4.5	4.5	4.5	4.5	4.5	4.5	4.5
Vout(Max), V	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3
Vout(Min), V	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3	3.3

生态计划

	LM3940IMP-3.3	LM3940IMP-3.3/NOPB	LM3940IMPX-3.3	LM3940IMPX-3.3/NOPB	LM3940IS-3.3	LM3940IS-3.3/NOPB	LM3940ISX-3.3	LM3940ISX-3.3/NOPB	LM3940IT-3.3	LM3940IT-3.3/NOPB
RoHS	See ti.com	Compliant	See ti.com	Compliant	See ti.com	Compliant	See ti.com	Compliant	See ti.com	Compliant
Pb Free	Yes	Yes

应用须知

下载
AN-1061 Power Conversion in Line-Powered Equipment (Rev. B)
PDF, 406 Kb, 修订版: B, 档案已发布: Apr 23, 2013
This application note describes line-powered equipment and power conversion techniques or methods tosolve those typical power needs.

模型线

系列: LM3940 (10)

LM3940IMP-3.3 LM3940IMP-3.3/NOPB LM3940IMPX-3.3 LM3940IMPX-3.3/NOPB LM3940IS-3.3 LM3940IS-3.3/NOPB LM3940ISX-3.3 LM3940ISX-3.3/NOPB LM3940IT-3.3 LM3940IT-3.3/NOPB

制造商分类

Semiconductors> Power Management> Linear Regulator (LDO)> Single Channel LDO