SGS Thomson Microelectronics LD1117AV50, LD1117AV33, LD1117AV28, LD1117AV25, LD1117AV18 Datasheet

1/16October 2003

■ LOW DROPOUT VOLTAGE

(1.15V TYP. @ I

OUT

=1A,25°C)

■ VERY LOW QUIESCENT CURRENT

(5 mA TYP. @ 25°C)

■ OUTPUT CURRENT UP TO 1A

■ FIXED OUTPUT VOLTAGE OF: 1.8V, 2.5V,

2.85V, 3.3V, 5.0V

■ ADJUSTABLE VERSION AVAILABILITY

(V

rel

= 1.25V)

■ INTERNAL CURRENT AND THERMAL LIMIT

■ ONLY 10 µFFOR STABILITY

■ AVAILABLEIN ± 2% (AT 25°C) AND 4% IN

FULL TEMPERATURE RANGE

■ HIGH SUPPLY VOLTAGE REJECTION:

(80dB TYP. AT 25°C)

■ TEMPERATURE RANGE: 0°C TO 125°C

DESCRIPTION

The LD1117A is a LOW DROP Voltage Regulator
able to provide up to 1A of Output Current,
available even in adjustable version (V ref=1.25V).
Concerning fixed v ers ions, are offered the
following Output Voltages: 1.8V, 2.5V, 2.85V,

3.3V and 5.0V. The 2. 85V type is ideal for SCSI-2
lines active termination. The device is suppl ied in:

SOT-223, D PAK and TO-220. The surface mount
packages optimize the thermal characteristics
even offering a relevant space saving effect. High
efficiency is assured by NPN pas s transistor. Only
a very common 10µF minimum capac it or is
needed for stability. Only chip trimming allows the
regulator to rea ch a very tight out put voltage
tolerance, within ± 2% at 25 ° C.

LD1117A

SERIES

LOW DROP FIXED AND ADJUSTABLE

POSITIVE VOLTAGE REGULATORS

BLOCK DIAGRAM

SOT-223

DPAK

TO-220

LD1117A SER IES

2/16

ABSOLUTE MAXIMUM RATINGS

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not implied. Over the above suggested Max Power Dissipation a Short Circuit could definitively damage the device.

THERMAL DATA

APPLICATION CIRCUIT (FOR OTHER FIXED OUTPUT VOLTAGES)

Symbol Parameter² Value Unit

V

IN

DC Input Voltage

10 V

P

tot

Power Dissipation

12 W

T

stg

Storage Temperature Range

-40 to +150 °C

T

op

Operating Junction Temperature Range

0 to +125 °C

Symbol Parameter TO-220 SOT-223 DPAK Unit

R

thj-case

Thermal Resistance Junction-case

3 15 8 °C/W

R

thj-amb

Thermal Resistance Junction-ambient

50 °C/W

LD1117A SERIES

3/16

CONNECTION DIAGRAM (top view)

NOTE: The TAB is connected to the V

OUT

.

ORDERING CODES

SOT-223 DPAK TO-220 OUTPUT VOLTAGE

LD1117AS18TR LD1117ADT18TR LD1117AV18 1.8 V
LD1117AS25TR LD1117ADT25TR LD1117AV25 2.5 V
LD1117AS28TR LD1117ADT28TR LD1117AV28 2.85 V
LD1117AS33TR LD1117ADT33TR LD1117AV33 3.3 V
LD1117AS50TR LD1117ADT50TR LD1117AV50 5 V

LD1117AST-R LD1117ADT-R LD1117AV ADJUSTABLE FROM 1.25

TO 15 V

SOT-223

DPAK

TO-220

LD1117A SER IES

4/16

ELECTRICAL CHARACTERISTICS OF LD1117A#18 (refer to the test circuits, TJ= 0 to 125°C,
C

O

=10µF,CI= 10 µF unless otherwise specified)

ELECTRICAL CHARACTERISTICS OF LD1117A#25 (refer to the test circuits, T

J

= 0 to 125°C,

C

O

=10µF,CI= 10 µF unless otherwise specified)

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

O

Output Voltage VI= 3.8 V IO=10mA TJ= 25°C 1.764 1.8 1.836 V

V

O

Output Voltage IO=0to1A VI= 3.3 to 8 V 1.728 1.872 V

∆V

O

Line Regulation VI= 3.3 to 8 V IO= 0 mA 1 6 mV

∆V

O

Load Regulation VI= 3.3 V IO= 0 to 1 A 1 10 mV

∆V

O

Temperature Stability 0.5 %

∆V

O

Long Term Stability 1000 hrs, TJ= 125°C 0.3 %

V

I

Operating Input Voltage IO= 100 mA 10 V

I

d

Quiescent Current VI≤ 8V IO= 0 mA 5 10 mA

I

O

Output Current VI-VO=5VTJ= 25°C 1000 mA

eN Output Noise Voltage B =10Hz to 10KHz T

J

= 25°C 100 µV

SVR Supply Voltage Rejection I

O

= 40 mA f = 120Hz

V

I-VO

=3VV

ripple

=1V

PP

60 80 dB

V

D

Dropout Voltage IO= 100 mA 1 1.10 V

I

O

= 500 mA 1.05 1.15

I

O

= 1 A 1.15 1.30

∆V

O(pwr)

Thermal Regulation Ta= 25°C 30ms Pulse 0.08 0.2 %/W

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

O

Output Voltage VI= 4.5 V IO=10mA TJ= 25°C 2.45 2.5 2.55 V

V

O

Output Voltage IO=0to1A VI= 3.9 to 8 V 2.4 2.6 V

∆V

O

Line Regulation VI= 3.9 to 8 V IO= 0 mA 1 6 mV

∆V

O

Load Regulation VI= 3.9 V IO= 0 to 1 A 1 10 mV

∆V

O

Temperature Stability 0.5 %

∆V

O

Long Term Stability 1000 hrs, TJ= 125°C 0.3 %

V

I

Operating Input Voltage IO= 100 mA 10 V

I

d

Quiescent Current VI≤ 10 V IO= 0 mA 5 10 mA

I

O

Output Current VI-VO=5VTJ= 25°C 1000 1200 mA

eN Output Noise Voltage B =10Hz to 10KHz T

J

= 25°C 100 µV

SVR Supply Voltage Rejection I

O

= 40 mA f = 120Hz

V

I-VO

=3VV

ripple

=1V

PP

60 80 dB

V

D

Dropout Voltage IO= 100 mA 1 1.10 V

I

O

= 500 mA 1.05 1.15

I

O

= 1 A 1.15 1.30

∆V

O(pwr)

Thermal Regulation Ta= 25°C 30ms Pulse 0.08 0.2 %/W

LD1117A SERIES

5/16

ELECTRICAL CHARACTERISTICS OF LD1117A#28 (refer to the test circuits, TJ= 0 to 125°C,
C

O

=10µF,CI= 10 µF unless otherwise specified)

ELECTRICAL CHARACTERISTICS OF LD1117A#33 (refer to the test circuits, T

J

= 0 to 125°C,

C

O

=10µF,CI= 10 µF unless otherwise specified)

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

O

Output Voltage VI= 4.85 V IO=10mA TJ= 25°C 2.793 2.85 2.907 V

V

O

Output Voltage IO=0to1A VI= 4.25 to 10 V 2.736 2.964 V

∆V

O

Line Regulation VI= 4.25 to 8 V IO= 0 mA 1 6 mV

∆V

O

Load Regulation VI= 4.25 V IO= 0 to 1 A 1 10 mV

∆V

O

Temperature Stability 0.5 %

∆V

O

Long Term Stability 1000 hrs, TJ= 125°C 0.3 %

V

I

Operating Input Voltage IO= 100 mA 10 V

I

d

Quiescent Current VI≤ 10 V IO= 0 mA 4.5 10 mA

I

O

Output Current VI-VO=5VTJ= 25°C 1000 1200 mA

eN Output Noise Voltage B =10Hz to 10KHz T

J

= 25°C 100 µV

SVR Supply Voltage Rejection I

O

= 40 mA f = 120Hz

V

I-VO

=3VV

ripple

=1V

PP

60 75 dB

V

D

Dropout Voltage IO= 100 mA 1 1.10 V

I

O

= 500 mA 1.05 1.15

I

O

= 1 A 1.15 1.30

∆V

O(pwr)

Thermal Regulation Ta= 25°C 30ms Pulse 0.08 0.2 %/W

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

O

Output Voltage VI= 5.3 V IO=10mA TJ= 25°C 3.234 3.3 3.366 V

V

O

Output Voltage IO=0to1A VI= 4.75 to 10 V 3.168 3.432 V

∆V

O

Line Regulation VI= 4.75 to 8 V IO= 0 mA 1 6 mV

∆V

O

Load Regulation VI= 4.75 V IO= 0 to 1 A 1 10 mV

∆V

O

Temperature Stability 0.5 %

∆V

O

Long Term Stability 1000 hrs, TJ= 125°C 0.3 %

V

I

Operating Input Voltage IO= 100 mA 10 V

I

d

Quiescent Current VI≤ 10 V IO= 0 mA 5 10 mA

I

O

Output Current VI-VO=5VTJ= 25°C 1000 1200 mA

eN Output Noise Voltage B =10Hz to 10KHz T

J

= 25°C 100 µV

SVR Supply Voltage Rejection I

O

= 40 mA f = 120Hz

V

I-VO

=3VV

ripple

=1V

PP

60 75 dB

V

D

Dropout Voltage IO= 100 mA 1 1.10 V

I

O

= 500 mA 1.05 1.15

I

O

= 1 A 1.15 1.30

∆V

O(pwr)

Thermal Regulation Ta= 25°C 30ms Pulse 0.08 0.2 %/W