BURR-BROWN REG1117, REG1117A User Manual

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800mA and 1A Low Dropout Positive Regulator

1.8V, 2.5V, 2.85, 3.3V, 5V, and Adjustable

REG1117

REG1117A

SBVS001D − OCTOBER 1992 − REVISED JULY 2004

FEATURES

D FIXED AND ADJUSTABLE VERSIONS
D 2.85V MODEL FOR SCSI-2 ACTIVE

TERMINATION

D OUTPUT CURRENT:

REG1117: 800mA max
REG1117A: 1A max

D OUTPUT TOLERANCE: +1% max
D DROPOUT VOLTAGE:

REG1117: 1.2V max at IO = 800mA
REG1117A: 1.3V max at IO = 1A

D INTERNAL CURRENT LIMIT
D THERMAL OVERLOAD PROTECTION
D SOT-223 AND DDPAK SURFACE-MOUNT

PACKAGES

APPLICATIONS

D SCSI-2 ACTIVE TERMINATION
D HAND-HELD DATA COLLECTION DEVICES
D HIGH EFFICIENCY LINEAR REGULATORS
D BATTERY-POWERED INSTRUMENTATION
D BATTERY MANAGEMENT CIRCUITS FOR

NOTEBOOK AND PALMTOP PCs

D CORE VOLTAGE SUPPLY: FPGA, PLD, DSP,

CPU

DESCRIPTION

The REG1117 is a family of easy-to-use three-terminal
voltage regulators. The family includes a variety of fixed­and adjustable-voltage versions, two currents (800mA and
1A) and two package types (SOT-223 and DDPAK). See
the chart below for available options.

Output voltage of the adjustable versions is set with two
external resistors. The REG1117 low dropout voltage
allows its use with as little as 1V input-output voltage
differential.

Laser trimming assures excellent output voltage accuracy
without adjustment. An NPN output stage allows output
stage drive to contribute to the load current for maximum
efficiency.

800mA 1A

VOLTAGE SOT-223 DDPAK SOT-223 DDPAK

1.8V n n

2.5V n n

2.85V n

3.3V n n
5V n n

Adjustable n n n

semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

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Copyright  1992−2004, Texas Instruments Incorporated

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SBVS001D − OCTOBER 1992 − REVISED JULY 2004

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ABSOLUTE MAXIMUM RATINGS

(1)

Power Dissipation Internally Limited. . . . . . . . . . . . . . . . . . . . . . . . . .

Input Voltage +15V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating Junction Temperature Range −40°C to +125°C. . . . . . . .

Storage Temperature Range −65°C to +150°C. . . . . . . . . . . . . . . . .

Lead Temperature (soldering, 10s)
(1)

Stresses above these ratings may cause permanent damage.

(2)

See Soldering Methods section.

(2)

CONNECTION DIAGRAM

Front View

Plastic SOT−223

V

Ground
(Adj.)

OUT

(1)

+300°C. . . . . . . . . . . . . . . . .

Tab isV

V

IN

OUT

This integrated circuit can be damaged by ESD. Texas
Instruments recommends that all integrated circuits be
handled with appropriate precautions. Failure to observe

proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to

complete device failure. Precision integrated circuits may be more
susceptible t o damage because very small parametric changes could
cause the device not to meet its published specifications.

Plastic DDPAK

Tab is

V

OUT

V

V

Ground
(Adj.)

(1)

OUT

IN

NOTE: (1) Adjustable−Voltage Model.

2

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−40°C to

−40 C to

−40°C to

−40 C to

−40°C to

−40 C to

−40°C to

−40 C to

−40°C to

−40 C to

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SBVS001D − OCTOBER 1992 − REVISED JULY 2004

PACKAGE/ORDERING INFORMATION

PRODUCT VO/I

REG1117-2.85 2.85/800mA SOT223-3 DCY

REG1117-3.3 3.3/800mA SOT223-3 DCY

REG1117F-3.3 3.3/800mA DDPAK-3 KTT

REG1117-5 5V/800mA SOT223-3 DCY

REG1117 Adj./800mA SOT223-3 DCY

REG1117A-1.8 1.8V/1A SOT223-3 DCY

REG11 17F A-1.8 1.8/1A DDPAK-3 KTT

REG1117A-2.5 2.5/1A SOT223-3 DCY

REG11 17F A-2.5 2.5/1A DDPAK-3 KTT

REG1117FA-5 5/1A DDPAK-3 KTT

REG1117A Adj./1A SOT223-3 DCY

REG1117FA Adj./1A DDPAK-3 KTT

(1)

For the most current package and ordering information, see the Package Option Addendum located at the end of this data sheet.

O

PACKAGE-LEAD

(1)

PACKAGE

DESIGNATOR

OPERATING

TEMPERATURE

RANGE

−40°C to
+125°C

−40°C to
+125°C

+125°C

−40°C to
+125°C

−40°C to
+125°C

−40°C to
+125°C

+125°C

−40°C to
+125°C

+125°C

+125°C

−40°C to
+125°C

+125°C

PACKAGE

MARKING

BB11172

BB11174

BB1117F4

BB11175

BB1117

R111718

REG11 17F A1.8

R111725

REG1117FA2.5

BB1117FA5.0

BB1117A

REG1117FA

ORDERING

NUMBER

REG1117-2.85 Rails, 80
REG1117-2.85

REG1117-3.3 Rails, 80
REG1117-3.3

REG1117F-3.3KTTT

REG1117F-3.3/500

REG1117-5 Rails, 80
REG1117-5

REG1117 Rails, 80

REG1117
REG1117A-1.8 Rails, 80
REG1117A-1.8

REG1117FA-1.8KTTT

REG1117FA-1.8/500

REG1117A-2.5 Rails, 80
REG1117A-2.5

REG1117FA-2.5KTTT

REG1117FA-2.5/500

REG1117FA-5/KTTT

REG1117FA-5/500

REG1117A Rails, 80
REG1117A

REG1117FA/KTTT

REG1117FA/500

TRANSPORT

MEDIA,

QUANTITY

T ape and Reel,

2500

T ape and Reel,

2500

T ape and Reel,

50

T ape and Reel,

500

T ape and Reel,

2500

T ape and Reel,

2500

T ape and Reel,

2500

T ape and Reel,

50

T ape and Reel,

500

T ape and Reel,

2500

T ape and Reel,

50

T ape and Reel,

500

T ape and Reel,

50

T ape and Reel,

500

T ape and Reel,

2500

T ape and Reel,

50

T ape and Reel,

500

3

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SBVS001D − OCTOBER 1992 − REVISED JULY 2004

ELECTRICAL CHARACTERISTICS

At TJ = +25°C, unless otherwise noted.

REG1117, REG1 117A

PARAMETER CONDITION MIN TYP MAX UNIT

OUTPUT VOLTAGE

REG1117-2.85 IO = 10mA, VIN = 4.85V 2.820 2.85 2.880 V

See Note 1 IO = 0 to 800mA, VIN = 4.05V to 10V 2.790 2.85 2.910 V

REG1117-3.3 IO = 10mA, VIN = 5.3V 3.270 3.30 3.330 V

See Note 1 IO = 0 to 800mA, VIN = 4.8V to 10V 3.240 3.30 3.360 V

REG1117-5 IO = 10mA, VIN = 7V 4.950 5.00 5.050 V

See Note 1 IO = 0 to 800mA, VIN = 6.5V to 10V 4.900 5.00 5.100 V

REG1117A-1.8 IO = 10mA, VIN = 3.8V 1.782 1.8 1.818 V

See Note 1 IO = 0 to 1A, VIN = 3.8V to 10V 1.764 1.8 1.836 V

REG1117A-2.5 IO = 10mA, VIN = 4.5V 2.475 2.5 2.525 V

See Note 1 IO = 0 to 1A, VIN = 4.5V to 10V 2.450 2.5 2.550 V

REG1117A-5 IO = 10mA, VIN = 7V 4.950 5.0 5.050 V

See Note 1 IO = 0 to 1A, VIN = 7V to 10V 4.900 5.0 5.100 V

REFERENCE VOLTAGE

REG1117 (Adjustable) IO = 10mA, VIN − VO = 2V 1.238 1.250 1.262 V

See Note 1 IO = 10 to 800mA, VIN − VO = 1.4 to 10V 1.225 1.250 1.280 V

REG1117A (Adjustable) IO = 10mA, VIN − VO = 2V 1.238 1.250 1.262 V

See Note 1 IO = 10mA to 1A, VIN − VO = 1.4 to 10V 1.225 1.250 1.280 V

LINE REGULATION

(1)

(1)

(1)

(1)

(1)

(1)

(1)
(1)
(1)

(1)

(1)

(1)

(1)

(1)

(1)(2)

(1)(2)

(3)

IO = 0, VIN = 4.25 to 10V 1 7 mV

IO = 0, VIN = 4.8 to 10V 2 7 mV

IO = 0, VIN = 6.5 to 15V 3 10 mV
IO = 10mA, VIN − VO = 1.5 to 13.75V 0.1 0.4 %
IO = 10mA, VIN − VO = 1.5 to 13.75V 0.1 0.4 %

IO = 0, VIN = 3.8V to 10V 1 7 mV
IO = 0, VIN = 4.5V to 10V 1 7 mV

IO = 0, VIN = 7V to 15V 3 10 mV

IO = 0 to 800mA, VIN = 4.25V 2 10 mV

IO = 0 to 800mA, VIN = 4.8V 3 12 mV
IO = 0 to 800mA, VIN = 6.5V 3 15 mV

IO = 10 to 800mA, VIN − VO = 3V 0.1 0.4 %

IO = 10mA to 1A, VIN − VO = 3V 0.1 0.4 %

IO = 0 to 1A, VIN = 3.8V 2 10 mV

IO = 100mA 1.00 1.10 V

IO = 800mA 1.10 1.20 V

REG1117-2.85
REG1117-3.3
REG1117-5
REG1117 (Adjustable)
REG1117A (Adjustable)
REG1117A-1.8
REG1117A-2.5
REG1117A-5.0

LOAD REGULATION

REG1117-2.85
REG1117-3.3
REG1117-5
REG1117 (Adjustable)
REG1117A (Adjustable)
REG1117A-1.8
REG1117A-2.5 IO = 0 to 1A, VIN = 4.5V 2 10 mV
REG1117A-5 IO = 0 to 1A, VIN = 7.0V 3 15 mV

DROPOUT VOLTAGE

All Models

See Note 1 IO = 500mA 1.05 1.15 V
REG1117 Models
REG1117A IO = 1A 1.2 1.30 V

See Note 1 IO = 1A 1.2 1.55 V
(1)

Specification applies over the full specified junction temperature range, 0°C to +125°C.

(2)

REG1117 and REG1117A adjustable versions require a minimum load current for ±3% regulation.

(3)

Dropout voltage is the input voltage minus output voltage that produces a 1% decrease in output voltage.

(4)

Percentage change in unloaded output voltage before versus after a 30ms power pulse of IO = 800mA (REG11 17 models), IO = 1A (REG11 17A),
VIN − VO = 1.4V (reading taken 10ms after pulse).

4

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SBVS001D − OCTOBER 1992 − REVISED JULY 2004

ELECTRICAL CHARACTERISTICS (continued)

At TJ = +25°C, unless otherwise noted.

REG1117, REG1 117A

PARAMETER UNITMAXTYPMINCONDITION

CURRENT LIMIT

REG1117 Models VIN − VO = 5V 800 950 1200 mA
REG1117A VIN − VO = 5V 1000 1250 1600 mA

MINIMUM LOAD CURRENT

(4)

(1)(2)

(1)

JC

JA

(1)

(1)(2)

(1)

VIN − VO = 13.75V 1.7 5 mA

VIN − VO = 5V 4 10 mA

IO = 10mA, VIN − VO = 1.4 to 10V 50 120 µA

IO = 10mA to 800mA, VIN − VO = 1.4 to 10V 0.5 5 µA

IO = 10mA to 1A, VIN − VO = 1.4 to 10V 0.5 5 µA

30ms Pulse 0.01 0.1 %/W

= 3V + 1VPP Ripple 62 dB

OUT

(Junction-to-Case at Tab)

dc 3 °C/W

(Junction-to-Case at Tab)

Adjustable Models

QUIESCENT CURRENT

Fixed-Voltage Models

ADJUSTABLE PIN CURRENT

vs Load Current, REG1117
vs Load Current, REG1117A

THERMAL REGULATION

All Models

RIPPLE REJECTION

All Models f = 120Hz, VIN − V

TEMPERATURE DRIFT

Fixed-Voltage Models TJ = 0°C to +125°C 0.5 %
Adjustable Models TJ = 0°C to +125°C 2 %

LONG-TERM STABILITY

All Models TA = 125°C, 1000Hr 0.3 %

OUTPUT NOISE

rms Noise, All Models f = 10Hz to 10kHz 0.003 %

THERMAL RESISTANCE

Thermal Resistance, q

3-Lead SOT-223 Surface-Mount 15 °C/W
3-Lead DDPAK Surface-Mount f > 50Hz 2 °C/W

Thermal Resistance, q

3-Lead DDPAK Surface-Mount No Heatsink 65 °C/W

(1)

Specification applies over the full specified junction temperature range, 0°C to +125°C.

(2)

REG1117 and REG1117A adjustable versions require a minimum load current for ±3% regulation.

(3)

Dropout voltage is the input voltage minus output voltage that produces a 1% decrease in output voltage.

(4)

Percentage change in unloaded output voltage before versus after a 30ms power pulse of IO = 800mA (REG11 17 models), IO = 1A (REG11 17A),
VIN − VO = 1.4V (reading taken 10ms after pulse).

5