NSC LM1117MPX-5.0, LM1117T-ADJ, LM1117T-5.0, LM1117T-3.3, LM1117T-2.85 Datasheet

LM1117
800mA Low-Dropout Linear Regulator

General Description

The LM1117 is a series of low dropout voltage regulators
with a dropout of 1.2V at 800mA of load current. It has the
same pin-out as National Semiconductor’s industry standard
LM317.

The LM1117 is available in an adjustable version, which can
set the output voltage from 1.25V to 13.8V with only two ex­ternal resistors. In addition, it is also available in five fixed
voltages, 1.8V, 2.5V, 2.85V, 3.3V, and 5V.

The LM1117 offers current limiting and thermal shutdown. Its
circuit includes a zener trimmed bandgap reference to as­sure output voltage accuracy to within

±

1%.

The LM1117 series is available in SOT-223, TO-220, and
TO-252 D-PAK packages. A minimum of 10µF tantalum ca­pacitor is required at the output to improve the transient re­sponse and stability.

Features

n Available in 1.8V, 2.5V, 2.85V, 3.3V, 5V, and Adjustable

Versions

n Space Saving SOT-223 Package
n Current Limiting and Thermal Protection
n Output Current 800mA
n Temperature Range 0˚C to 125˚C
n Line Regulation 0.2%(Max)
n Load Regulation 0.4%(Max)

Applications

n 2.85V Model for SCSI-2 Active Termination
n Post Regulator for Switching DC/DC Converter
n High Efficiency Linear Regulators
n Battery Charger
n Battery Powered Instrumentation

Typical Application

Active Terminator for SCSI-2 Bus

DS100919-5

Fixed Output Regulator

DS100919-28

February 2000

LM1117 800mA Low-Dropout Linear Regulator

© 2000 National Semiconductor Corporation DS100919 www.national.com

Ordering Information

Package

Temperature Range

Packaging Marking Transport Media NSC Drawing

0˚C to +125˚C

3-lead SOT-223 LM1117MPX-ADJ N03A Tape and Reel MA04A

LM1117MPX-1.8 N12A Tape and Reel

* LM1117MPX-2.5 N13A Tape and Reel

LM1117MPX-2.85 N04A Tape and Reel

LM1117MPX-3.3 N05A Tape and Reel
LM1117MPX-5.0 N06A Tape and Reel

3-lead TO-220 LM1117T-ADJ LM1117T-ADJ Rails T03B

LM1117T-2.85 LM1117T-2.85 Rails

LM1117T-3.3 LM1117T-3.3 Rails
LM1117T-5.0 LM1117T-5.0 Rails

3-lead TO-252 LM1117DTX-ADJ LM1117DT-ADJ Tape and Reel TD03B

LM1117DTX-1.8 LM1117DT-1.8 Tape and Reel

* LM1117DTX-2.5 LM1117DT-2.5 Tape and Reel

LM1117DTX-2.85 LM1117DT-2.85 Tape and Reel

LM1117DTX-3.3 LM1117DT-3.3 Tape and Reel
LM1117DTX-5.0 LM1117DT-5.0 Tape and Reel

Note:*Contact factory for availability.

Block Diagram

DS100919-1

LM1117

www.national.com 2

Connection Diagrams

SOT-223

DS100919-4

Top View

TO-220

DS100919-2

Top View

TO-252

DS100919-38

Top View

LM1117

www.national.com3

Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,
please contact the NationalSemiconductor Sales Office/
Distributors for availability and specifications.

Maximum Input Voltage (V

IN

to GND)

LM1117-ADJ, LM1117-1.8,
LM1117-2.5, LM1117-3.3,
LM1117-5.0 20V

Power Dissipation (Note 2) Internally Limited
Junction Temperature (T

J

)

(Note 2)

150˚C

Storage Temperature Range -65˚C to 150˚C
Lead Temperature

TO-220 (T) Package 260˚C, 10 sec
SOT-223 (IMP) Package 260˚C, 4 sec
ESD Tolerance (Note 3) 2000V

Operating Ratings (Note 1)

Input Voltage (V

IN

to GND)

LM1117-ADJ, LM1117-1.8,
LM1117-2.5, LM1117-3.3,
LM1117-5.0

15V

LM1117-2.85 10V
Junction Temperature Range

(T

J

)(Note 2)

0˚C to 125˚C

Electrical Characteristics

Typicals and limits appearing in normal type apply for TJ= 25˚C. Limits appearing in Boldface type apply over the entire junc­tion temperature range for operation, 0˚C to 125˚C.

Symbol Parameter Conditions

Min

(Note 5)

Typ

(Note 4)

Max

(Note 5)

Units

V

REF

Reference Voltage LM1117-ADJ

I

OUT

= 10mA, VIN-V

OUT

= 2V, TJ= 25˚C

10mA ≤ I

OUT

≤ 800mA, 1.4V ≤ VIN-V

OUT

≤ 10V

1.238

1.225

1.250

1.250

1.262

1.270

V
V

V

OUT

Output Voltage LM1117-1.8

I

OUT

= 10mA, VIN= 3.8V, TJ= 25˚C

0 ≤ I

OUT

≤ 800mA, 3.2V ≤ VIN≤ 10V

1.782

1.746

1.800

1.800

1.818

1.854

V
V

LM1117-2.5
I

OUT

= 10mA, VIN= 4.5V, TJ= 25˚C

0 ≤ I

OUT

≤ 800mA, 3.9V ≤ VIN≤ 10V

2.475

2.450

2.500

2.500

2.525

2.550

V
V

LM1117-2.85
I

OUT

= 10mA, VIN= 4.85V, TJ= 25˚C

0 ≤ I

OUT

≤ 800mA, 4.25V ≤ VIN≤ 10V

0 ≤ I

OUT

≤ 500mA, VIN= 4.10V

2.820

2.790

2.790

2.850

2.850

2.850

2.880

2.910

2.910

V
V
V

LM1117-3.3
I

OUT

= 10mA, VIN=5VTJ= 25˚C

0 ≤ I

OUT

≤ 800mA, 4.75V≤ VIN≤ 10V

3.267

3.235

3.300

3.300

3.333

3.365

V
V

LM1117-5.0
I

OUT

= 10mA, VIN= 7V, TJ= 25˚C

0 ≤ I

OUT

≤ 800mA, 6.5V ≤ VIN≤ 12V

4.950

4.900

5.000

5.000

5.050

5.100

V
V

∆V

OUT

Line Regulation
(Note 6)

LM1117-ADJ
I

OUT

= 10mA, 1.5V ≤ VIN-V

OUT

≤

13.75V

0.035 0.2

%

LM1117-1.8
I

OUT

= 0mA, 3.2V ≤ VIN≤ 10V

1 6 mV

LM1117-2.5
I

OUT

= 0mA, 3.9V ≤ VIN≤ 10V

1 6 mV

LM1117-2.85
I

OUT

= 0mA, 4.25V ≤ VIN≤ 10V 1 6 mV

LM1117-3.3
I

OUT

= 0mA, 4.75V ≤ VIN≤ 15V 1 6 mV

LM1117-5.0
I

OUT

= 0mA, 6.5V ≤ VIN≤ 15V 1 10 mV

LM1117

www.national.com 4

Electrical Characteristics (Continued)

Typicals and limits appearing in normal type apply for TJ= 25˚C. Limits appearing in Boldface type apply over the entire junc­tion temperature range for operation, 0˚C to 125˚C.

Symbol Parameter Conditions

Min

(Note 5)

Typ

(Note 4)

Max

(Note 5)

Units

∆V

OUT

Load Regulation
(Note 6)

LM1117-ADJ
V

IN-VOUT

= 3V, 10 ≤ I

OUT

≤ 800mA 0.2 0.4

%

LM1117-1.8
V

IN

= 3.2V, 0 ≤ I

OUT

≤ 800mA

1 10 mV

LM1117-2.5
V

IN

= 3.9V, 0 ≤ I

OUT

≤ 800mA

1 10 mV

LM1117-2.85
V

IN

= 4.25V, 0 ≤ I

OUT

≤ 800mA 1 10 mV

LM1117-3.3
V

IN

= 4.75V, 0 ≤ I

OUT

≤ 800mA 1 10 mV

LM1117-5.0
V

IN

= 6.5V, 0 ≤ I

OUT

≤ 800mA 1 15 mV

V

IN-VOUT

Dropout Voltage
(Note 7)

I

OUT

= 100mA 1.10 1.20 V

I

OUT

= 500mA 1.15 1.25 V

I

OUT

= 800mA 1.20 1.30 V

I

LIMIT

Current Limit VIN-V

OUT

= 5V, TJ= 25˚C 800 1200 1500 mA

Minimum Load
Current (Note 8)

LM1117-ADJ
V

IN

= 15V 1.7 5 mA

Quiescent Current LM1117-1.8

V

IN

≤ 15V

5 10 mA

LM1117-2.5
V

IN

≤ 15V

5 10 mA

LM1117-2.85
V

IN

≤ 10V 5 10 mA

LM1117-3.3
V

IN

≤ 15V 5 10 mA

LM1117-5.0
V

IN

≤ 15V 5 10 mA

Thermal Regulation T

A

= 25˚C, 30ms Pulse 0.01 0.1

%

/W

Ripple Regulation f

RIPPLE

=1 20Hz, VIN-V

OUT

=3V

V

RIPPLE

=1V

PP

60 75 dB

Adjust Pin Current 60 120 µA
Adjust Pin Current

Change

10 ≤ I

OUT

≤ 800mA,

1.4V ≤ V

IN-VOUT

≤ 10V 0.2 5 µA

Temperature Stability 0.5

%

Long Term Stability T

A

= 125˚C, 1000Hrs 0.3

%

RMS Output Noise (%of V

OUT

), 10Hz ≤ f ≤10kHz 0.003

%

Thermal Resistance
Junction-to-Case

3-Lead SOT-223
3-Lead TO-220
3-Lead TO-252

15.0

3.0
10

˚C/W
˚C/W
˚C/W

Thermal Resistance
Junction-to-Ambient
(No heat sink;
No air flow)

3-Lead SOT-223
3-Lead TO-220
3-Lead TO-252 (Note 9)

136

79
92

˚C/W
˚C/W
˚C/W

Note 1: Absolute Maximum Ratings indicatelimits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is in­tended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics.

Note 2: The maximum power dissipation is a function of T

J(max)

, θJA, and TA. The maximum allowable power dissipation at any ambient temperature is

P

D

=(T

J(max)–TA

)/θJA. All numbers apply for packages soldered directly into a PC board.

Note 3: For testing purposes, ESD was applied using human body model, 1.5kΩ in series with 100pF.
Note 4: Typical Values represent the most likely parametric norm.
Note 5: All limits are guaranteed by testing or statistical analysis.
Note 6: Load and line regulation are measured at constant junction room temperature.

LM1117

www.national.com5

Electrical Characteristics (Continued)

Note 7: The dropout voltage is the input/output differential at which the circuit ceases to regulate against further reduction in input voltage. It is measured when the

output voltage has dropped 100mV from the nominal value obtained at V

IN=VOUT

+1.5V.

Note 8: The minimum output current required to maintain regulation.
Note 9: Minimum pad size of 0.038in

2

LM1117

www.national.com 6