LDS3985M22R datasheet(1/20 Pages) STMICROELECTRONICS

tên linh kiện	LDS3985M22R

Giải thích chi tiết về linh kiện	Ultra low drop-low noise BiCMOS 300 mA voltage regulator for use with very low ESR output capacitor

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July 2010

Doc ID 11039 Rev 7

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LDS3985xx

Ultra low drop-low noise BiCMOS 300 mA voltage

regulator for use with very low ESR output capacitor

Features

■ Input voltage from 2.5 V to 6 V

■ Stable with low ESR ceramic capacitors

■ Ultra low dropout voltage (150 mV typ. at 300

mA load, 0.4 mV typ. at 1 mA load)

■ Very low quiescent current (85 µA typ. at no

load, 200 µA typ. at 300 mA load; max 1.5 µA

in off mode)

■ Guaranteed output current up to 300 mA

■ Wide range of output voltage:

– from 1.25 V to 5.0 V

■ Fast turn-on time: typ. 240 µs

–[CO = 2.2 µF, CBYP = 33 nF and IO = 1 mA]

■ Logic-controlled electronic shutdown

■ Internal current and thermal limit

■ Output low noise voltage 30 µVRMS over 10 Hz

to 100 kHz

■ SVR of 55 dB at 1 kHz, 50 dB at 10 kHz

■ Temperature range: - 40 °C to 125 °C

Description

The LDS3985xx provides up to 300 mA, from 2.5

V to 6 V input voltage. It is stable with ceramic and

high quality tantalum capacitor. The ultra low drop

voltage, low quiescent current and low noise

makes it suitable for low power applications and in

battery powered systems. Regulator ground

current increases only slightly in dropout, further

prolonging the battery life. Shutdown logic control

function is available, this means that when the

device is used as local regulator, it is possible to

put a part of the board in standby, decreasing the

total power consumption. Typical applications are

in mobile phone and similar battery powered

wireless systems, portable information

appliances.

DFN6

SOT23-5L

Table 1.

Device summary

Part numbers

Output voltages

LDS3985XX15

1.5 V

LDS3985XX18

1.8 V

LDS3985XX25

2.5 V

LDS3985XX28

2.8 V

LDS3985XX30

3.0 V

LDS3985XX33

3.3 V

LDS3985XX50

5.0 V

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Số phần tương tự - LDS3985M22R

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
STMicroelectronics	LDS3985M22R	337Kb / 13P	ULTRA LOW DROP-LOW NOISE BICMOS 300mA V.REG. FOR USE WITH VERY LOW ESR OUTPUT CAPACITOR Dec-2004

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nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
National Semiconductor ...	LP2985	478Kb / 21P	Micropower 150 mA Low-Noise Ultra Low-Dropout Regulator Designed for Use with Very Low ESR Output Capacitors
STMicroelectronics	LD3985	393Kb / 14P	ULTRA LOW DROP-LOW NOISE BICMOS VOLTAGE REGULATORS LOW ESR CAPACITORS COMPATIBLE 27-Oct-2004
	LD3986	230Kb / 12P	DUAL ULTRA LOW DROP-LOW NOISE BICMOS VOLTAGE REG. FOR USE WITH VERY LOW ESR OUT. CAPACITORS 22-Sep-2005
	LDS3985	337Kb / 13P	ULTRA LOW DROP-LOW NOISE BICMOS 300mA V.REG. FOR USE WITH VERY LOW ESR OUTPUT CAPACITOR Dec-2004
	LD3985XX	552Kb / 22P	Ultra low drop-low noise BiCMOS voltage regulators low ESR capacitors compatible 03-Jan-2011
	LD39150	459Kb / 19P	Ultra low drop BICMOS voltage regulator 26-Jan-2007
National Semiconductor ...	LP2978	286Kb / 8P	Micropower SOT, 50 mA Low-Noise Ultra Low-Dropout Regulator Designed for Use with Very Low ESR Output Capacitors
STMicroelectronics	LD39080	504Kb / 20P	Ultra low drop BICMOS voltage regulator 26-Jan-2007
Unisonic Technologies	LD2985	353Kb / 23P	VERY LOW DROP AND LOW NOISE VOLTAGE REGULATOR LOW ESR CAP
Unisonic Technologies	LD2985	353Kb / 23P	VERY LOW DROP AND LOW NOISE VOLTAGE REGULATOR LOW ESR CAP.

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