UTCLD1117/A LINEAR INTEGRATED CIRCUIT

1

QW-R102-006,H

LOW DROP FIXED AND

ADJUSTABLE POSITIVE VOLTAGE

REGULATORS

DESCRIPTION

The UTC LD1117/A is a LOW DROP Voltage Regulator

able to provide up to 0.8/1.0A of Output Current, available

even in adjustable version (Vref=1.25V). Concerning fixed

versions, are offered the following Output Voltages: 1.8V,

2.5V, 2.85V, 3.0V, 3.3V and 5.0V. The 2.85V type is ideal for

SCSI-2 lines active termination. The device is supplied in:

SOT-223, TO-252, TO-263, TO-263-3, SOP-8 and TO-220.

The SOT-223, TO-263, TO-263-3 and TO-252 surface mount

packages optimize the thermal characteristics even offering a

relevant space saving effect. High efficiency is assured by

NPN pass transistor. In fact in the case, unlike than PNP one,

the Quiescent Current flows mostly into the load. Only a very

common 10

µF minimum capacitor is needed for stability. On

chip trimming allows the regulator to reach a very tight output

voltage tolerance, within

±1% at 25°C. The ADJUSTABLE

LD1117/A is pin to pin compatible with the other standard

Adjustable

voltage

regulators

maintaining

the

better

performances in terms of Drop and Tolerance.

FEATURES

*Low dropout voltage (1V Typ.)

*2.85V device performances are suitable for SCSI-2 active

termination

*Output current up to 0.8/1.0A

*Fixed output voltage of: 1.8V,2.5V, 2,85V, 3.0V, 3.3V, 5.0V

*Adjustable version availability (Vref=1.25V)

*Internal current and thermal limit

*Available in

±1%(at 25°C) and 2% in all temperature range

*Supply voltage rejection: 75dB (TYP)

*Temperature range: 0

°C to 125°C

SOP-8

SOT-223

1

2

3

1

TO-220

TO-252

TO-263

1

1

1

TO-263-3

SOP-8

1: GND; 2,3,6,7: Vout;

4: Vin;

5,8: NC