LD3985M26R datasheet, PDF - EEWORLD Datasheet

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LD3985M26R: Description3.3 V FIXED POSITIVE LDO REGULATOR, 0.1 V DROPOUT, PDSO5; CategoryPower/power management The power supply circuit; File Size303KB，18 Pages; ManufacturerSTMicroelectronics; Websitehttp://www.st.com/; Environmental Compliance

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LD3985M26R Overview

3.3 V FIXED POSITIVE LDO REGULATOR, 0.1 V DROPOUT, PDSO5

LD3985M26R Parametric

Parameter Name	Attribute value
Is it lead-free?	Lead free
Is it Rohs certified?	conform to
Maker	STMicroelectronics
Parts packaging code	SOT-23
package instruction	LEAD FREE, SOT-23, 5 PIN
Contacts	5
Reach Compliance Code	compliant
ECCN code	EAR99
Adjustability	FIXED
Maximum drop-back voltage 1	0.1 V
Nominal dropback voltage 1	0.06 V
Maximum absolute input voltage	6 V
Maximum input voltage	6 V
Minimum input voltage	2.5 V
JESD-30 code	R-PDSO-G5
JESD-609 code	e4
length	2.9 mm
Maximum grid adjustment rate	0.00754%
Maximum load regulation	0.0194%
Humidity sensitivity level	1
Number of functions	1
Output times	1
Number of terminals	5
Working temperatureTJ-Max	125 °C
Working temperature TJ-Min	-40 °C
Maximum output current 1	0.15 A
Maximum output voltage 1	2.678 V
Minimum output voltage 1	2.522 V
Nominal output voltage 1	2.6 V
Package body material	PLASTIC/EPOXY
encapsulated code	LSSOP
Encapsulate equivalent code	TSOP5/6,.11,37
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
method of packing	TAPE AND REEL
Peak Reflow Temperature (Celsius)	260
Certification status	Not Qualified
Regulator type	FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
Maximum seat height	1.45 mm
surface mount	YES
technology	BICMOS
Terminal surface	Nickel/Palladium/Gold (Ni/Pd/Au)
Terminal form	GULL WING
Terminal pitch	0.95 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	30
Maximum voltage tolerance	3%
width	1.625 mm
Base Number Matches	1

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LD3985

Ultra low drop and low noise BiCMOS voltage regulators

Datasheet

production data

Features

•

Input voltage from 2.5 V to 6 V

•

Stable with low ESR ceramic capacitors

•

Ultra low-dropout voltage (60 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 voltages: 1.22 V; 1.8 V;

2.5 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 [C

= 1 µF,

BYP

= 10 nF and I

= 1 mA]

•

Logic-controlled electronic shutdown

•

Internal current and thermal limit

•

Output low noise voltage 30 µV

RMS

over 10 Hz

to 100 kHz

•

SVR of 60 dB at 1 kHz, 50 dB at 10 kHz

•

Temperature range: - 40 °C to 125 °C

Power supply rejection is better than 60 dB at low

frequencies and rolls 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 LD3985 is designed to

work with low ESR ceramic capacitors. Typical

applications are in mobile phones and similar

battery-powered wireless systems.

Description

The LD3985 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

slightly in dropout only, prolonging the battery life.

July 2017

This is information on a product in full production.

DocID9587 Rev 16

1/18

www.st.com

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