LD1084V28 datasheet, PDF - EEWORLD Datasheet

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LD1084V28: Description2.85 V FIXED POSITIVE LDO REGULATOR, 1.5 V DROPOUT, PSFM3; CategoryPower/power management The power supply circuit; File Size488KB，29 Pages; ManufacturerSTMicroelectronics; Websitehttp://www.st.com/

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LD1084V28 Overview

2.85 V FIXED POSITIVE LDO REGULATOR, 1.5 V DROPOUT, PSFM3

LD1084V28 Parametric

Parameter Name	Attribute value
Is it Rohs certified?	incompatible
Maker	STMicroelectronics
Parts packaging code	SFM
package instruction	TO-220, 3 PIN
Contacts	3
Reach Compliance Code	compli
ECCN code	EAR99
Is Samacsys	N
Adjustability	FIXED
Maximum drop-back voltage 1	1.5 V
Nominal dropback voltage 1	1.3 V
Maximum absolute input voltage	30 V
Maximum input voltage	18 V
Minimum input voltage	4.5 V
JESD-30 code	R-PSFM-T3
JESD-609 code	e0
Maximum grid adjustment rate	0.006%
Maximum load regulation	0.02%
Number of functions	1
Output times	1
Number of terminals	3
Working temperatureTJ-Max	125 °C
Operating temperatureTJ-Mi	-40 °C
Maximum output current 1	5 A
Maximum output voltage 1	2.907 V
Minimum output voltage 1	2.793 V
Nominal output voltage 1	2.85 V
Package body material	PLASTIC/EPOXY
encapsulated code	TO-220
Encapsulate equivalent code	SIP3,.1TB
Package shape	RECTANGULAR
Package form	FLANGE MOUNT
Peak Reflow Temperature (Celsius)	NOT SPECIFIED
Certification status	Not Qualified
Regulator type	FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR
surface mount	NO
technology	BIPOLAR
Terminal surface	TIN LEAD
Terminal form	THROUGH-HOLE
Terminal pitch	2.54 mm
Terminal location	SINGLE
Maximum time at peak reflow temperature	NOT SPECIFIED
Maximum voltage tolerance	2%
Base Number Matches	1

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LD1084 series

5A Low drop positive voltage regulator adjustable and fixed

Feature summary

■

Typical dropout 1.3V (at 5A)

Three terminal adjustable or fixed output

voltage 1.5V, 1.8V, 2.5V, 2.85V, 3.3V, 3.6V,

5V, 8V, 9V, 12V.

Guaranteed output current up to 5A

Output tolerance ±1% at 25°C and ±2% in full

temperature range

Internal power and thermal limit

Wide operating temperature range -40°C to

125°C

Package available: TO-220,

PAK,

PAK/A

TO-220

PAK

■

PAK/A

■

Pinout compatibility with standard adjustable

VREG

Description

The LD1084 is a LOW DROP Voltage Regulator

able to provide up to 5A of Output Current.

Dropout is guaranteed at a maximum of 1.5V at

the maximum output current, decreasing at lower

loads. The LD1084 is pin to pin compatible with

the older 3-terminal adjustable regulators, but has

better performances in term of drop and output

tolerance.

A 2.85V output version is suitable for SCSI-2

active termination. Unlike PNP regulators, where

a part of the output current is wasted as quiescent

current, the LD1084 quiescent current flows into

the load, so increase efficiency. Only a 10µF

minimum capacitor is need for stability.

The device is supplied in TO-220, D

PAK and

PAK/A. On chip trimming allows the regulator to

reach a very tight output voltage tolerance, within

±1% at 25°C.

Schematic diagram

April 2007

Rev. 6

1/29

www.st.com

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