LP2951-02YN datasheet(10/17 Pages) MICREL

Part #	LP2951-02YN

Description	100mA Low-Dropout Voltage Regulator

Download	17 Pages

Scroll/Zoom	100%

Manufacturer	MICREL [Micrel Semiconductor]

Direct Link	http://www.micrel.com

Logo

10 / 17 page

Micrel, Inc.

LP2950/2951

September 2008

10

M9999-091208

Noise can be reduced fourfold by a bypass capacitor

across R1, since it reduces the high frequency gain from

4 to unity. Pick:

200Hz

R

2

1

C

1

BYPASS

•

≅

π

or about 0.01µF. When doing this, the output capacitor

must be increased to 3.3µF to maintain stability. These

changes reduce the output noise from 430µV to

100µVrms for a100kHz bandwidth at 5V output. With the

bypass capacitor added, noise no longer scales with

output voltage so that improvements are more dramatic

at higher output voltages.

Figure 1. ERROR Output Timing

Figure 2. Adjustable Regulator

Similar Part No. - LP2951-02YN

Manufacturer	Part #	Datasheet	Description
Microchip Technology	LP2951-02YN	2Mb / 30P	100 mA Low-Dropout Voltage Regulator 09/14/21

Manufacturer	Part #	Datasheet	Description
Micrel Semiconductor	LP2950	135Kb / 14P	100mA Low-Dropout Voltage Regulator
Sipex Corporation	SPX2931	85Kb / 8P	100mA Low Dropout Voltage Regulator
Advanced Monolithic Sys...	AMS2931	78Kb / 9P	100mA LOW DROPOUT VOLTAGE REGULATOR
Advanced Monolithic Sys...	LP2950	142Kb / 14P	100mA LOW DROPOUT VOLTAGE REGULATOR
List of Unclassifed Man...	LM2931	87Kb / 8P	100mA Low Dropout Voltage Regulator
SHANGHAI BELLING CO., L...	BL2950	659Kb / 10P	100mA Low -Dropout Voltage Regulator
Linear Dimensions Semic...	LND2931	125Kb / 5P	100mA Low Dropout Voltage Regulator
Advanced Monolithic Sys...	LP2950	137Kb / 14P	100mA LOW DROPOUT VOLTAGE REGULATOR
Advanced Monolithic Sys...	AMS116	113Kb / 7P	100mA LOW DROPOUT VOLTAGE REGULATOR
GTM CORPORATION	GLP2950	238Kb / 3P	100mA LOW DROPOUT VOLTAGE REGULATOR