LD1585CXX datasheet(1/15 Pages) STMICROELECTRONICS

Part #	LD1585CXX

Description	5 A low dropout fast response positive voltage regulator adjustable

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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July 2008

Rev 8

1/15

15

LD1585CXX

5 A low dropout fast response positive

voltage regulator adjustable

Features

■ Typical dropout 1.2 V

■ Fast transient response

■ Three terminal adjustable

■ Guaranteed output current up to 5 A

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

full temperature range

■ Internal power and thermal limit

■ Wide operating temperature range

0 °C to 125 °C

■ Package available: TO-220

■ Pinout compatibility with standard adjustable

VREG

Description

The LD1585C is a low drop voltage regulator able

to provide up to 5 A of output current. Dropout is

guaranteed at a maximum of 1.4 V at the

maximum output current, decreasing at lower

loads. The device has been improved to be

utilized in low voltage applications where transient

response and minimum input voltage are critical.

The most important feature of the device consist

in lower dropout voltage and very fast transient

response. A 2.85 V 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 LD1585C quiescent current

flows into the load, so increase efficiency. Only a

10 µF minimum capacitor is need for stability.

The device is supplied in TO-220. On chip

trimming allows the regulator to reach a very tight

output voltage tolerance, within ± 1 % at 25 °C.

TO-220

Table 1.

Device summary

Part number

Order code

Output voltage

LD1585CXX

LD1585CV

ADJ

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