REG104FA-2.5KTTTG3 datasheet, PDF

REG104

REG

104

REG

104

SBVS025G – SEPTEMBER 2001 – REVISED SEPTEMBER 2005

DMOS

1A Low-Dropout Regulator

FEATURES

q

NEW DMOS TOPOLOGY:

Ultra Low Dropout Voltage:

230mV typ at 1A and 3.3V Output

Output Capacitor NOT Required for Stability

q

FAST TRANSIENT RESPONSE

q

VERY LOW NOISE: 33

µ

V

RMS

q

HIGH ACCURACY:

±

2% max

q

HIGH EFFICIENCY:

I

GND

= 1.7mA at I

OUT

= 1A

Not Enabled: I

GND

= 0.5

µ

A

q

2.5V, 2.7V, 3.0V, 3.3V, 5.0V AND

ADJUSTABLE OUTPUT VERSIONS

q

THERMAL PROTECTION

q

SMALL SURFACE-MOUNT PACKAGES:

SOT223-5, DDPAK-5

DESCRIPTION

The REG104 is a family of low-noise, low-dropout linear

regulators with low ground pin current. Its new DMOS topol-

ogy provides significant improvement over previous designs,

including low dropout voltage (only 230mV 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 1.7mA (at I

OUT

= 1A) and

drops to 0.5µA in

not enabled

mode. Unlike regulators with

PNP pass devices, quiescent current remains relatively con-

stant over load variations and under dropout conditions.

The REG104 has very low output noise (typically 33µV

RMS

for V

OUT

= 3.3V with C

NR

= 0.01µF), making it ideal for use

in portable communications equipment. On-chip trimming

results in high output voltage accuracy. Accuracy is main-

tained over temperature, line, and load variations. Key pa-

rameters are tested over the specified temperature range

(–40°C to +85°C).

The REG104 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. The REG104 is available in the

DDPAK-5 and the SOT223-5.

APPLICATIONS

q

PORTABLE COMMUNICATION DEVICES

BATTERY-POWERED EQUIPMENT

MODEMS

BAR-CODE SCANNERS

BACKUP POWER SUPPLIES

Enable

V

IN

+

0.1µF

REG104

(Fixed Voltage

Versions)

Gnd

+

V

OUT

C

OUT(1)

V

IN

+

0.1µF

Enable

V

OUT

REG104-A

R

1

Adj

Gnd

R

2

+

C

OUT(1)

NR

NR = Noise Reduction

NOTE: (1) Optional.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

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

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

www.ti.com

ABSOLUTE MAXIMUM RATINGS

(1)

Supply Input Voltage, V

IN

....................................................... –0.3V to 16V

Enable Input Voltage, V

EN

....................................................... –0.3V to V

IN

Feedback Voltage, V

FB

........................................................ –0.3V to 6.0V

NR Pin Voltage, V

NR

............................................................. –0.3V to 6.0V

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 (soldering, 3s, SOT, and DDPAK) ................... +240°C

ESD Rating: HBM (V

OUT

to GND) ..................................................... 1.5kV

HBM (All other pins) ........................................................ 2kV

CDM .............................................................................. 500V

NOTE: (1) Stresses above these ratings may cause permanent damage.

Exposure to absolute maximum conditions for extended periods may degrade

device reliability.

ELECTROSTATIC

DISCHARGE SENSITIVITY

This integrated circuit can be damaged by ESD. Texas Instru-

ments 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.

PACKAGE/ORDERING INFORMATION

(1)

PRODUCT

REG104xx-

yyyy/zzz

XX

is package designator.

YYYY

is typical output voltage (5 = 5.0V, 2.85 = 2.85V, A = Adjustable).

ZZZ

is package quantity.

(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI website at www.ti.com.

V

OUT

PIN CONFIGURATIONS

Top View

DDPAK-5

Tab is Gnd

SOT223-5

1 2 3 4 5

1

V

O

Gnd

V

IN

Enable

2

3

4

5

NR/Adjust

(1)

V

IN

V

OUT

Gnd

Enable

NR/Adjust

(1)

(KTT Package)

(DCQ Package)

NOTE: (1) For REG104A-A: voltage setting resistor pin.

All other models: noise reduction capacitor pin.

2

REG104

SBVS025G

ELECTRICAL CHARACTERISTICS

Boldface

limits apply over the specified temperature range,

T

J

= –40

°

C to +85

°

C

At T

J

= +25°C, V

IN

= V

OUT

+ 1V (V

OUT

= 3.0V for REG104-A), V

ENABLE

= 2V, I

OUT

= 10mA, C

NR

= 0.01µF, and C

OUT

= 0.1µF

(1)

, unless otherwise noted.

REG104GA

REG104FA

PARAMETER

OUTPUT VOLTAGE

Output Voltage Range

REG104-2.5

REG104-2.7

REG104-3.0

REG104-3.3

REG104-5

REG104-A

Reference Voltage

Adjust Pin Current

Accuracy

T

J

= –40

°

C to +85

°

C

vs Temperature

vs Line and Load

T

J

= –40

°

C to +85

°

C

DC DROPOUT VOLTAGE

(2, 3)

For all models except 5V

For 5V model

For all models except 5V

T

J

= –40

°

C to +85

°

C

For 5V models

T

J

= –40

°

C to +85

°

C

VOLTAGE NOISE

f = 10Hz to 100kHz

Without C

NR

(all models)

With C

NR

(all fixed voltage models)

OUTPUT CURRENT

Current Limit

(4)

T

J

= –40

°

C to +85

°

C

RIPPLE REJECTION

f = 120Hz

ENABLE CONTROL

V

ENABLE

High (output enabled)

V

ENABLE

Low (output disabled)

I

ENABLE

High (output enabled)

I

ENABLE

Low (output disabled)

Output Disable Time

Output Enable Softstart Time

THERMAL SHUTDOWN

Junction Temperature

Shutdown

Reset from Shutdown

GROUND PIN CURRENT

Ground Pin Current

Enable Pin Low

INPUT VOLTAGE

Operating Input Voltage Range

(6)

Specified Input Voltage Range

T

J

= –40

°

C to +85

°

C

TEMPERATURE RANGE

Specified Range

Operating Range

Storage Range

Thermal Resistance

DDPAK-5 Surface Mount

SOT223-5 Surface Mount

V

IN

V

IN

> 2.7V

V

IN

> 2.9V

T

J

2.1

V

OUT

+ 0.7

V

OUT

+ 0.9

–40

–55

–65

Junction-to-Case

4

15

+85

+125

+150

V

°C

°C/W

I

GND

I

OUT

= 10mA

I

OUT

= 1A

V

ENABLE

≤

0.5V

V

ENABLE

I

ENABLE

V

ENABLE

= 2V to V

IN

, V

IN

= 2.1V to 6.5

(5)

V

ENABLE

= 0V to 0.5V

2

–0.2

1

2

50

1.5

V

OUT

2.5

2.7

3.0

3.3

5

V

REF

V

REF

I

ADJ

dV

OUT

/dT

T

J

= –40

°

C to +85

°

C

I

OUT

= 10mA to 1A, V

IN

= (V

OUT

+ 0.7V) to 15V

V

IN

= (V

OUT

+ 0.9V) to 15V

I

OUT

I

OUT

I

OUT

I

OUT

=

10mA

1A

1.295

0.2

±0.5

70

±0.5

3

230

320

5.5

1

±2

±

3.0

V

µA

%

ppm/°C

%

mV

CONDITION

MIN

TYP

MAX

UNITS

±

3.5

25

400

500

480

580

±2.5

V

DROP

I

OUT

= 1A

V

n

C

NR

= 0, C

OUT

= 0

C

NR

= 0.01µF, C

OUT

= 10µF

I

CL

1.2

1.0

35µV

RMS

/V • V

OUT

10µV

RMS

/V • V

OUT

1.7

2.1

2.2

µV

RMS

µV

RMS

A

dB

V

IN

0.5

100

V

nA

µs

ms

65

150

130

0.5

1.7

0.5

0.7

1.8

°C

mA

µA

θ

JC

θ

JC

NOTES: (1) The REG104 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

IN

= V

OUT

+ 1V

at fixed load.

(3) Not applicable for V

OUT

less than 2.7V.

(4) Current limit is the output current that produces a 15% change in output voltage from V

IN

= V

OUT

+ 1V and I

OUT

= 10mA.

(5) For V

IN

> 6.5V, see typical characteristic

V

ENABLE

vs I

ENABLE

.

(6) The REG104 no longer regulates when V

IN

< V

OUT

+ V

DROP (MAX)

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

IN

to V

OUT

is typically less than 1Ω at T

J

= +25°C. See typical characteristic

Output Voltage Change vs V

IN

.

REG104

SBVS025G

3

TYPICAL CHARACTERISTICS

For all models, at T

J

= +25°C and V

ENABLE

= 2V, unless otherwise noted.

OUTPUT VOLTAGE CHANGE vs I

OUT

(V

IN

= V

OUT

+ 1V, Output Voltage % Change

Referred to I

OUT

= 10mA at +25°C)

DC DROPOUT VOLTAGE vs I

OUT

350

0.8

0.6

Output Voltage Change (%)

0.4

0.2

0

–0.2

–0.4

–0.6

–0.8

–1

–1.2

0

100

DC Dropout Voltage (mV)

+125°C

300

250

200

150

100

50

0

–55°C

+125°C

+25°C

–55°C

200 300 400

500 600

700

800 900 1000

0

200

400

600

800

1000

Output Current (mA)

I

OUT

(mA)

OUTPUT VOLTAGE CHANGE vs V

IN

(Output Voltage % Change Referred to

V

IN

= V

OUT

+ 1V at I

OUT

= 10mA)

OUTPUT VOLTAGE CHANGE vs I

OUT

(Output Voltage % Change Referred to

I

OUT

= 10mA at +25°C)

0.5

I

OUT

= 10mA

I

OUT

= 200mA

0.6

0.4

0.2

I

OUT

= 10mA

I

OUT

= 200mA

Output Voltage Change (%)

0

Output Voltage (%)

–0.5

I

OUT

= 1000mA

0

–0.2

–0.4

–0.6

–0.8

–1

I

OUT

= 1000mA

–1

–1.5

–2

0

2

4

6

8

10

12

Input Voltage Above V

OUT

(V)

–1.2

–60

–40

–20

0

20

40

60

80

100

120

Temperature (°C)

DC DROPOUT VOLTAGE vs TEMPERATURE

350

I

OUT

= 1000mA

LINE REGULATION vs TEMPERATURE

(V

IN

= V

OUT

+ 1V to 16V)

0.5

Output Voltage Change (%)

300

DC Dropout Voltage (mV)

0.4

250

200

150

100

I

OUT

= 200mA

50

0

–75

I

OUT

= 10mA

–50

–25

0

25

50

75

100

125

0.3

I

OUT

= 10mA

0.2

0.1

I

OUT

= 200mA

0

–75

–50

–25

0

25

50

75

100

125

Temperature (°C)

4

REG104

SBVS025G

TYPICAL CHARACTERISTICS

(Cont.)

For all models, at T

J

= +25°C and V

ENABLE

= 2V, unless otherwise noted.

LOAD TRANSIENT RESPONSE

500mV/div

50mV/div

LINE TRANSIENT RESPONSE

REG104-3.3

I

OUT

= 200mA

V

OUT

C

OUT

= 10µF

V

OUT

REG104-3.3

C

OUT

= 0

V

OUT

C

OUT

= 10µF

V

OUT

C

OUT

= 0

500mV/div

1A

10mA

10µs/div

I

LOAD

50mV/div

6V

5V

50µs/div

V

IN

LOAD TRANSIENT RESPONSE

REG104–A

LOAD TRANSIENT RESPONSE

REG104–A

500mV/div 500mV/div

C

OUT

= 0

50mV/div 50mV/div

C

FB

= 0.01µF, V

OUT

= 3.3V

Load = 200mA, C

FB

= 0.01µF, V

OUT

= 3.3V

C

OUT

= 0

C

OUT

= 10µF

C

OUT

= 10µF

1A

10mA

10µs/div

I

LOAD

6V

5V

50µs/div

V

IN

LOAD REGULATION vs TEMPERATURE

(V

IN

= V

OUT

+ 1V and 10mA < I

OUT

< 1000mA)

0.5

Output Voltage Change (%)

OUTPUT NOISE DENSITY

10

5

Noise Density (µV/√Hz)

0.4

2

1

0.5

0.2

0.1

0.05

0.02

C

NR

= 0.01µF

C

OUT

= 10µF

10

100

1000

Frequency (Hz)

10000

100,000

C

NR

= 0

C

OUT

= 0

0.3

0.2

0.1

0

–60

0.01

–40

–20

0

20

40

60

80

100

120

Temperature (°C)

REG104

SBVS025G

5

REG104FA-2.5KTTTG3

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