Burr Brown REG103UA-5, REG103UA-5-2K5, REG103UA-A, REG103UA-A-2K5, REG103FA-A-500 Datasheet

®

For most current data sheet and other product

information, visit www.burr-brown.com

500mA Low Dropout Regulator

REG103

REG103

REG103

DMOS

REG103

FEATURES

● NEW DMOS TOPOLOGY:

Ultra Low Dropout Voltage:

115mV typ at 500mA and 3.3V Output

Output capacitor NOT required for stability

● FAST TRANSIENT RESPONSE

●

VERY LOW NOISE:

33µVrms

● HIGH ACCURACY: ±2% max

● HIGH EFFICIENCY:

I

= 1mA at I

GND

Not Enabled: I

= 500mA

OUT

= 0.5µA

GND

● 2.5V, 2.7V, 3.0V, 3.3V, 5.0V AND

ADJUSTABLE OUTPUT VERSIONS

● FOLDBACK CURRENT LIMIT

● THERMAL PROTECTION

● OUTPUT VOLTAGE ERROR INDICATOR

● SMALL SURFACE-MOUNT PACKAGES:

SOT223-5, DDPAK-5, SO-8

APPLICATIONS

● PORTABLE COMMUNICATION DEVICES

● BATTERY-POWERED EQUIPMENT

● PERSONAL DIGITAL ASSISTANTS

● MODEMS

● BAR-CODE SCANNERS

● BACKUP POWER SUPPLIES

(1)

DESCRIPTION

The REG103 is a family of low noise, low dropout
linear regulators with low ground pin current. Its new
DMOS topology provides significant improvement
over previous designs, including low dropout voltage
(only 115mV typ at full load), and better transient
performance. In addition, no output capacitor is re­quired for stability, unlike conventional low dropout
regulators that are difficult to compensate and require
expensive low ESR capacitors greater than 1µF.

Typical ground pin current is only 1mA (at I
500mA) and drops to 0.5µA in “not enabled” mode.
Unlike regulators with PNP pass devices, quiescent
current remains relatively constant over load varia­tions and under dropout conditions.

The REG103 has very low output noise (typically
33µVrms for V

= 3.3V with CNR = 0.01µF),

OUT

making it ideal for use in portable communications
equipment. On-chip trimming results in high output
voltage accuracy. Accuracy is maintained over tem­perature, line, and load variations. Key parameters are
guaranteed over the specified temperature range
(–40°C to +85°C).

The SO-8 version of the REG103 has an Error pin
which provides a “power good” flag indicating the
regulator is in regulation. The REG103 is well pro­tected: internal circuitry provides a current limit which
protects the load from damage. Thermal protection
circuitry keeps the chip from being damaged by exces­sive temperature. In addition to the SO-8 package, the
REG103 is also available in the DDPAK and the
SOT223-5.

OUT

=

Enable

V

IN

+

0.1µF

NR

NR = Noise Reduction

International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: [phone]

Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: [phone] • Immediate Product Info: [phone]

©

2000 Burr-Brown Corporation PDS-1527C Printed in U.S.A. July, 2000

REG103

(Fixed Voltage

Versions)

Gnd

NOTE: (1) SO-8 Package Only. (2) Optional.

V

OUT

+

(2)

C

OUT

V

IN

+

0.1µF

1

Enable

REG103-A

Gnd

(1)

Error

Error

(1)

REG103

R
Adj
R

V

OUT

+

1

2

(2)

C

OUT

®

SPECIFICATIONS

At TJ = +25°C, VIN = V
Boldface limits apply over the specified temperature range, T

OUT

+ 1V (V

= 3.0V for REG103-A), V

OUT

= 2V, I

ENABLE

= –40°C to +85°C.

J

OUT

= 10mA, CNR = 0.01µF, and C

OUT

PARAMETER CONDITION MIN TYP MAX UNITS
OUTPUT VOLTAGE

Output Voltage Range V

REG103-2.5 2.5 V

OUT

REG103-2.7 2.7 V
REG103-3.0 3.0 V
REG103-3.3 3.3 V
REG103-5 5V
REG103-A V

Reference Voltage V
Adjust Pin Current I

Accuracy ±0.5 ±2%

T

= –40°C to +85°C ±2.8 %

J

vs Temperature dV

vs Line and Load

T

= –40°C to +85°CV

J

DC DROPOUT VOLTAGE

For all models except 5V I

(2, 3)

For 5V model I

For all models except 5V I

T

= –40°C to +85°C

J

For 5V models I

T

= –40°C to +85°C

J

VOLTAGE NOISE

f = 10Hz to 100kHz V
Without CNR (all models) CNR = 0, C
With C

(all fixed voltage models) CNR = 0.01µF, C

NR

OUTPUT CURRENT

Current Limit

T

(4)

= –40°C to +85°C 500 1000 mA

J

REF

ADJ

/dT TJ = –40°C to +85°C70ppm/°C

OUT

V

DROP

I

I

= 10mA to 500mA, VIN = (V

OUT

n

CL

= (V

IN

+ 0.9V) to 15V ±3.5 %

OUT

I

= 10mA 3 25 mV

OUT

= 500mA 115 200 mV

OUT

= 500mA 160 250 mV

OUT

= 500mA 230 mV

OUT

= 500mA 280 mV

OUT

+ 0.7V) to 15V

OUT

= 0 30µVrms/V • V

OUT

= 10µF10µVrms/V • V

OUT

REF

550 700 950 mA

RIPPLE REJECTION

f = 120Hz 65 dB

ENABLE CONTROL

V

High (output enabled) V

ENABLE

V

Low (output disabled) –0.2 0.5 V

ENABLE

I

High (output enabled) I

ENABLE

I

Low (output disabled) V

ENABLE

Output Disable Time 50 µs

ENABLE

ENABLE

V

= 2V to VIN, VIN = 2.1V to 6.5

ENABLE

= 0V to 0.5V 2 100 nA

ENABLE

(5)

2V

Output Enable Softstart Time 1.5 ms

ERROR FLAG

Current,
Voltage,

(6)

Logic High (open drain)—Normal Operation
Logic Low—On Error

VIN = V

= V

ERROR

Sinking 500µA 0.2 0.4 V

+ 1V 0.1 10 µA

OUT

THERMAL SHUTDOWN

Junction Temperature

Shutdown 150 °C
Reset from Shutdown 130 °C

GROUND PIN CURRENT

Ground Pin Current I

GND

Enable Pin Low V

INPUT VOLTAGE V
Operating Input Voltage Range

(7)

IN

Specified Input Voltage Range V

T

= –40°C to +85°CV

J

I

= 10mA 0.5 0.7 mA

OUT

I

= 500mA 1 1.3 mA

OUT

≤ 0.5V 0.5 µA

ENABLE

2.1 15 V

> 2.7V V

IN

> 2.9V V

IN

+ 0.7 15 V

OUT

+ 0.9 15 V

OUT

TEMPERATURE RANGE

Specified Range T
Operating Range –55 +125 °C
Storage Range –65 +150 °C

J

–40 +85 °C

Thermal Resistance

DDPAK-5 Surface Mount
SO-8 Surface Mount
SOT223-5 Surface Mount

θ

JC

θ

JA

θ

JC

Junction-to-Case 3 °C/W

Junction-to-Ambient 150 °C/W

Junction-to-Case 15 °C/W

NOTES: (1) The REG103 does not require a minimum output capacitor for stability. However, transient response can be improved with proper capacitor selection. (2) Dropout
voltage is defined as the input voltage minus the output voltage that produces a 2% change in the output voltage from the value at V
for V

less than 2.7V. (4) Current limit is the output current that produces a 10% change in output voltage from VIN = V

OUT

typical performance curve “V
regulates when V
T

= +25°C. See typical performance curve.

J

< V

IN

OUT

ENABLE

+ V

vs I

DROP (MAX)

.” (6) Logic low indicates out of regulation condition by approximately 10%, or thermal shutdown. (7) The REG103 no longer

ENABLE

. In drop-out or when the input voltage is between 2.7V and 2.1V, the impedance from VIN to V

OUT

(1)

= 0.1µF

, unless otherwise noted.

REG103GA
REG103UA
REG103FA

5.5 V

1.295 V

0.2 1 µA

±0.5 ±2.5 %

OUT
OUT

IN

1 100 nA

= V

+ 1V at fixed load. (3) Not applicable

IN

OUT

+ 1V and I

= 10mA. (4) For VIN > 6.5V see

OUT

is typically less than 1Ω at

OUT

µVrms
µVrms

V

®

REG103

2

PIN CONFIGURATIONS

Top View

DDPAK-5

1234

V

GND

O

(1)

NR/Adjust

5

V

IN

Enable

Tab is GND

V

V

NR/Adjust

GND

OUT

OUT

SO-8

1

2

(1)

3

4

8

7

6

5

V

IN

V

IN

Error

Enable

SOT223-5

Tab is GND

12345

GNDV

IN

V

OUT

Enable

NR/Adjust

(1)

(FA Package)

NOTE: (1) For REG103A-A: voltage setting resistor pin.
All other models: noise reduction capacitor pin.

ABSOLUTE MAXIMUM RATINGS

Supply Input Voltage, VIN.......................................................–0.3V to 16V

Enable Input ............................................................................ –0.3V to V

Error Flag Output .....................................................................–0.3V to 6V

Error Flag Current ...............................................................................2mA

Output Short-Circuit Duration ......................................................Indefinite

Operating Temperature Range ....................................... –55°C to +125°C

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

Junction Temperature ..................................................... –55°C to +150°C

Lead Temperature

NOTE: (1) Stresses above these ratings may cause permanent damage.
Exposure to absolute maximum conditions for extended periods may degrade
device reliability.

(soldering, 3s, SO-8, SOT and DDPAK)

(1)

................ +240°C

(UA Package)

IN

(GA Package)

ELECTROSTATIC
DISCHARGE SENSITIVITY

This integrated circuit can be damaged by ESD. Burr-Brown
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 to damage because very small
parametric changes could cause the device not to meet its
published specifications.

The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user's own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.

3

REG103

®

PACKAGE/ORDERING INFORMATION

PACKAGE SPECIFIED

PRODUCT PACKAGE NUMBER RANGE MARKING NUMBER

5V Output

REG103FA-5

(2)

DDPAK-5 325 –40°C to +85°C REG103FA-5.0 REG103FA-5 Rails

DRAWING TEMPERATURE PACKAGE ORDERING TRANSPORT

"""""REG103FA-5/500 Tape and Reel

REG103UA-5 SO-8 182 –40°C to +85°C REG103U50 REG103UA-5 Rails

"""""REG103UA-5/2K5 Tape and Reel

REG103GA-5

(2)

SOT223-5 364 –40°C to +85°C R103G50 REG103GA-5 Rails

"""""REG103GA-5/2K5 Tape and Reel

3.3V Output

REG103FA-3.3

(2)

DDPAK-5 325 –40°C to +85°C REG103FA-3.3 REG103FA-3.3 Rails

"""""REG103FA-3.3/500 Tape and Reel

REG103UA-3.3 SO-8 182 –40°C to +85°C REG103UA4 REG103UA-3.3 Rails

"""""REG103UA-3.3/2K5 Tape and Reel

REG103GA-3.3

(2)

SOT223-5 364 –40°C to +85°C R103G33 REG103GA-3.3 Rails

"""""REG103GA-3.3/2K5 Tape and Reel

3.0V Output

REG103FA-3

REG103UA-3

REG103GA-3

(2)

"""""REG103FA-3/500 Tape and Reel

(2)

"""""REG103UA-3/2K5 Tape and Reel

(2)

DDPAK-5 325 –40°C to +85°C REG103FA-3.0 REG103FA-3 Rails

SO-8 182 –40°C to +85°C REG103U30 REG103UA-3 Rails

SOT223-5 364 –40°C to +85°C R103G30 REG103GA-3 Rails

"""""REG103GA-3/2K5 Tape and Reel

2.7V Output

REG103FA-2.7

(2)

DDPAK-5 325 –40°C to +85°C REG103FA-2.7 REG103FA-2.7 Rails

"""""REG103FA-2.7/500 Tape and Reel

REG103UA-2.7 SO-8 182 –40°C to +85°C REG103U27 REG103UA-2.7 Rails

"""""REG103UA-2.7/2K5 Tape and Reel

REG103GA-2.7

(2)

SOT223-5 364 –40°C to +85°C R103G27 REG103GA-2.7 Rails

"""""REG103GA-2.7/2K5 Tape and Reel

2.5V Output

REG103FA-2.5

(2)

DDPAK-5 325 –40°C to +85°C REG103FA-2.5 REG103FA-2.5 Rails

"""""REG103FA-2.5/500 Tape and Reel

REG103UA-2.5 SO-8 182 –40°C to +85°C REG103U25 REG103UA-2.5 Rails

"""""REG103UA-2.5/2K5 Tape and Reel

REG103GA-2.5

(2)

SOT223-5 364 –40°C to +85°C R103G25 REG103GA-2.5 Rails

"""""REG103GA-2.5/2K5 Tape and Reel

Adjustable Output

REG103FA-A

(2)

DDPAK-5 325 –40°C to +85°C REG103FAA REG103FA-A Rails

"""""REG103FA-A/500 Tape and Reel

REG103UA-A SO-8 182 –40°C to +85°C REG103UA REG103UA-A Rails

"""""REG103UA-A/2K5 Tape and Reel

REG103GA-A

(2)

SOT223-5 364 –40°C to +85°C R103GA REG103GA-A Rails

"""""REG103GA-A/2K5 Tape and Reel

NOTES: (1) Models with a slash (/) are available only in Tape and Reel in the quantities indicated (e.g., /2K5 indicates 2500 devices per reel). Ordering 2500 pieces
of “REG103UA-5/2K5” will get a single 2500-piece Tape and Reel. (2) Scheduled availability June, 2000.

(1)

MEDIA

®

REG103

4