LD3985G28R datasheet(1/22 Pages) STMICROELECTRONICS

부품명	LD3985G28R

상세설명	Ultra low drop-low noise BiCMOS voltage regulators low ESR capacitors compatible

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제조업체	STMICROELECTRONICS [STMicroelectronics]

홈페이지	http://www.st.com

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December 2007

Rev 12

1/22

22

LD3985xx

Ultra low drop-low noise BiCMOS voltage

regulators low ESR capacitors compatible

Features

■ Input voltage from 2.5 V to 6 V

■ Stable with low ESR ceramic capacitors

■ Ultra low dropout voltage (100 mV typ. at 150

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

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

load, 170 µA typ. at 150 mA load; max 1.5 µA

in OFF mode)

■ Guaranteed output current up to 150 mA

■ Wide range of output voltage: 1.22 V; 1.8 V;

2.5 V; 2.6 V; 2.7 V; 2.8 V; 2.9 V; 3 V; 3.3 V;

4.7 V

■ Fast turn-on time: typ. 200 µs

[CO = 1 µF, CBYP = 10 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

■ S.V.R. of 60 dB at 1 kHz, 50 dB at 10 kHz

■ Temperature range: -40 °C to 125 °C

Description

The LD3985xx provides up to 150 mA, from 2.5 V

to 6 V input voltage.

The ultra low drop-voltage, low quiescent current

and low noise make it suitable for low power

applications and in battery powered systems.

Regulator ground current increases only slightly

in dropout, further prolonging the battery life.

Power supply rejection is better than 60 dB at low

frequencies and starts to roll off at 10 kHz. High

power supply rejection is maintained down to low

input voltage levels common to battery operated

circuits. 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. The LD3985xx is designed to work

with low ESR ceramic capacitors. Typical

applications are in mobile phone and similar

battery powered wireless systems.

Flip-chip

TSOT23-5L

SOT23-5L

(1.57x1.22)

Table 1.

Device summary

Part number

LD3985XX122

LD3985XX28

LD3985XX18

LD3985XX29

LD3985XX25

LD3985XX30

LD3985XX26

LD3985XX33

LD3985XX27

LD3985XX47

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유사한 부품 번호 - LD3985G28R

제조업체	부품명	데이터시트	상세설명
STMicroelectronics	LD3985G28R	393Kb / 14P	ULTRA LOW DROP-LOW NOISE BICMOS VOLTAGE REGULATORS LOW ESR CAPACITORS COMPATIBLE 27-Oct-2004

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유사한 설명 - LD3985G28R

제조업체	부품명	데이터시트	상세설명
STMicroelectronics	LD2980	416Kb / 17P	VERY LOW DROP VOLTAGE REGULATORS WITH INHIBIT LOW ESR OUTPUT CAPACITORS COMPATIBLE Sep-2003
	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
	LD2980ABXX	429Kb / 23P	Ultra low drop voltage regulators compatible with low ESR inhibit output capacitors 11-Jul-2008
	LD2981ABXX	430Kb / 23P	Ultra low drop voltage regulators with inhibit low ESR output capacitors compatible 14-Jul-2008
	LD39150	459Kb / 19P	Ultra low drop BICMOS voltage regulator 26-Jan-2007
	LD39300	359Kb / 17P	Ultra low drop BICMOS voltage regulator 26-Jan-2007
Stanson Technology	ST6206	297Kb / 8P	Low ESR Low Drop Out Voltage Regulators
STMicroelectronics	LD39080	504Kb / 20P	Ultra low drop BICMOS voltage regulator 26-Jan-2007
STMicroelectronics	LD39150XX	511Kb / 19P	Ultra low drop BiCMOS voltage regulator 12-Jan-2009

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LD3985G28R 데이터시트(PDF) 1 Page - STMicroelectronics

LD3985G28R 데이터시트(HTML) 1 Page - STMicroelectronics

유사한 부품 번호 - LD3985G28R

유사한 설명 - LD3985G28R

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