BURR-BROWN REG113 User Manual

查询REG113-3供应商

REG113

SBVS031D – MARCH 2001 – REVISED SEPTEMBER 2005

DMOS

400mA Low-Dropout Regulator

FEATURES

● CAP-FREE DMOS TOPOLOGY:

Ultra Low Dropout Voltage:

250mV typ at 400mA Output Capacitor

not

Required for Stability

● UP TO 500mA PEAK, TYPICAL

● FAST TRANSIENT RESPONSE

●

VERY LOW NOISE:

28µVrms

● HIGH ACCURACY: ±1.5% max

● HIGH EFFICIENCY:

I

= 850µA at I

GND

Not Enabled: I

= 400mA

OUT

= 0.01µA

GND

● 2.5V, 2.85V, 3.0V, 3.3V, AND 5.0V OUTPUT VERSIONS

● OTHER OUTPUT VOLTAGES AVAILABLE UPON

REQUEST

● FOLDBACK CURRENT LIMIT

● THERMAL PROTECTION

● SMALL SURFACE-MOUNT PACKAGES:

SOT23-5 and MSOP-8

APPLICATIONS

● PORTABLE COMMUNICATION DEVICES

● BATTERY-POWERED EQUIPMENT

● PERSONAL DIGITAL ASSISTANTS

● MODEMS

● BAR-CODE SCANNERS

● BACKUP POWER SUPPLIES

DESCRIPTION

The REG113 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 250mV typ at full load), and better transient performance. In addition, no output capacitor is required for stability, unlike conventional lowdropout regulators that are difficult to compensate and require expensive low ESR capacitors greater than 1µF.

Typical ground pin current is only 850µA (at I and drops to 10nA when not enabled. Unlike regulators with PNP pass devices, quiescent current remains relatively constant over load variations and under dropout conditions.

The REG113 has very low output noise (typically 28µVrms for V in portable communications equipment. Accuracy is maintained over temperature, line, and load variations. Key parameters are tested over the specified temperature range (–40°C to +85°C).

The REG113 is well protected—internal circuitry provides a current limit which protects the load from damage, furthermore, thermal protection circuitry keeps the chip from being damaged by excessive temperature. The REG113 is available in SOT23-5 and MSOP-8 packages.

= 3.3V with CNR = 0.01µF), making it ideal for use

OUT

Enable

V

IN

+

0.1µF

NR

(2)

REG113

GND

+

C

OUT

V

OUT

(1)

= 400mA)

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.

NOTES: (1) Optional. (2) NR = Noise Reduction.

www.ti.com

ABSOLUTE MAXIMUM RATINGS

Supply Input Voltage, VIN.......................................................–0.3V to 12V

Enable Input Voltage, V

NR Pin Voltage, VNR.............................................................–0.3V to 6.0V

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

Operating Temperature Range (T Storage Temperature Range (T

Lead Temperature (soldering, 3s).................................................. +240°C

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

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

EN

) ................................ –55°C to +125°C

J

) ................................... –65°C to +150°C

A

(1)

IN

ELECTROSTATIC DISCHARGE SENSITIVITY

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 to damage because very small parametric changes could cause the device not to meet its published specifications.

PACKAGE/ORDERING INFORMATION

PRODUCT V

REG113xx-

(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. (2) Output voltages from 2.5V to 5.1V in 50mV increments are available; minimum order quantities apply. Contact factory for details and availability.

yyyy/zzz

(1)

(2)

OUT

XX is package designator. YYYY is typical output voltage (5 = 5.0V, 2.85 = 2.85V, A = Adjustable). ZZZ is package quantity.

PIN CONFIGURATIONS

Top View

V

GND

Enable

IN

1

2

3

SOT

(N Package)

5

V

OUT

4

NR

Enable

V

OUT

NR

IN

1

2

3

4

(E Package)

MSOP

8

GND

7

GND

6

GND

5

GND

NOTE: Leads 5 through 8 are fused to the lead frame and can be used for improved thermal dissipation.

2

www.ti.com

REG113

SBVS031D

ELECTRICAL CHARACTERISTICS

Boldface limits apply over the specified temperature range, TJ = –40°C to +85°C.

At TJ = +25°C, VIN = V

OUT

+ 1V, V

ENABLE

= 1.8V, I

= 5mA, CNR = 0.01µF, and C

OUT

PARAMETER CONDITION MIN TYP MAX UNITS OUTPUT VOLTAGE

Output Voltage Range V

REG113-2.5 2.5 V

OUT

REG113-2.85 2.85 V REG113-3 3.0 V REG113-3.3 3.3 V REG113-5 5.0 V

Accuracy ±0.5 ±1.5 %

Over Temperature vs Temperature dV

vs Line and Load

Over Temperature

DC DROPOUT VOLTAGE

(2)

For all models I

Over Temperature I

/dT 50 ±2.3 ppm/°C

OUT

V

DROP

I

= 5mA to 400mA, VIN = (V

OUT

I

= 5mA to 400mA,

OUT

VIN = (V

I

= 5mA 4 10 mV

OUT

= 400mA 250 325 mV

OUT

= 400mA 410 mV

OUT

+ 0.6V) to 10V ±3.0 %

OUT

+ 0.4V) to 10V

OUT

VOLTAGE NOISE

f = 10Hz to 100kHz V Without C With C

OUTPUT CURRENT

Current Limit

NR

(3)

Over Temperature 600 mA

Short-Circuit Current Limit I

n

I

CL

SC

CNR = 0, C

CNR = 0.01µF, C

= 0 23µVrms/V • V

OUT

= 10µF7µVrms/V • V

OUT

RIPPLE REJECTION

f = 120Hz 65 dB

ENABLE CONTROL

V

HIGH (output enabled) V

ENABLE

LOW (output disabled) –0.2 0.5 V

V

ENABLE

I

HIGH (output enabled) I

ENABLE

LOW (output disabled) V

I

ENABLE

Output Disable Time C Output Enable Softstart Time C

ENABLE

V

= 1.8V to VIN, VIN = 1.8V to 6.5

ENABLE

= 0V to 0.5V 2 100 nA

ENABLE

= 1.0µF, R

OUT

= 1.0µF, R

OUT

= 13Ω 50 µs

LOAD

= 13Ω 1.5 ms

LOAD

THERMAL SHUTDOWN

Junction Temperature

Shutdown 160 °C Reset from Shutdown 140 °C

GROUND PIN CURRENT

Ground Pin Current I

GND

Enable Pin LOW V

INPUT VOLTAGE V Operating Input Voltage Range

(5)

IN

Specified Input Voltage Range V

Over Temperature V

I

= 5mA 400 500 µA

OUT

I

= 400mA 850 1000 µA

OUT

≤ 0.5V 0.01 0.2 µA

ENABLE

> 1.8V V

IN

> 1.8V V

IN

TEMPERATURE RANGE

Specified Range T Operating Range T Storage Range T Thermal Resistance

SOT23-5 Surface-Mount MSOP-8 Surface-Mount

J J A

θ

JA

θ

JC

θ

JA

Junction-to-Ambient 200 °C/W

Junction-to-Case 35

Junction-to-Ambient 160

NOTES: (1) The REG113 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

+ 1V at fixed load. (3) Current limit is the output current that produces a 10% change in output voltage from VIN = V (4) For V (5) The REG113 no longer regulates when VIN < V

> 6.5V, see typical characteristic

ENABLE

I

ENABLE

OUT

vs V

+ V

ENABLE

DROP (MAX)

.

. In dropout, the impedance from VIN to V

(6) See Figure 7.

= 0.1µF

(4)

(1)

, unless otherwise noted.

REG113NA REG113EA

425 500 575 mA

1.8 V

1.8 10 V + 0.4 10 V

OUT

+ 0.6 10 V

OUT

–40 +85 °C –55 +125 °C –65 +150 °C

+ 1V and I

OUT

±2.3 %

±1 ±2.3 %

OUT

200 mA

IN

1 100 nA

(6)

= 5mA.

OUT

is typically less than 1Ω at TJ = +25°C.

OUT

µVrms µVrms

°C/W °C/W

V

= V

IN

OUT

REG113

SBVS031D

www.ti.com

3

TYPICAL CHARACTERISTICS

For all models, at TJ = +25°C and V

= 1.8V, unless otherwise noted.

ENABLE

1.0

0.8

0.6

OUTPUT VOLTAGE CHANGE vs I

(Referred to I

= 200mA at +25°C)

OUT

–55°C +25°C +125°C

0.4

0.2 0

–0.2 –0.4 –0.6

Ouput Voltage Change (%)

–0.8 –1.0

0 50 100 150 200 250 300 350 400

Output Current (mA)

LINE REGULATION

40

(Referred to V

= V

IN

OUT

+ 1V at IO = 200mA)

30 20 10

0

–10 –20

Ouput Voltage Change (mV)

–30 –40

01234567

VIN – V

OUT

(V)

5mA 200mA 400mA

LOAD REGULATION vs TEMPERATURE

(V

= V

+ 1V)

IN

0

–0.1

OUT

I I

OUT OUT

= 40mA to 400mA = 5mA to 400mA

–0.2 –0.3 –0.4 –0.5 –0.6

Ouput Change (%)

–0.7 –0.8 –0.9

–50 –25 0 25 50 75 100 125

Temperature (°C)

LINE REGULATION vs TEMPERATURE

0

–0.05 –0.10

I

= 200mA, (V

OUT

I

= 200mA, (V

OUT

+ 1V) < VIN < 10

OUT

+ 0.4V) < V

OUT

–0.15 –0.20 –0.25 –0.30 –0.35

Ouput Change (%)

= 400mA, (V

OUT

I

= 400mA, (V

OUT

+ 1V) < VIN < 10

OUT

+ 0.4V) < VIN < 10

OUT

I

–0.40 –0.45 –0.50

–50 –25 0 25 50 75 100 125

Temperature (°C)

IN

< 10

400

DC DROPOUT VOLTAGE vs OUTPUT CURRENT

350 300 250 200 150 100

DC Dropout Voltage (mV)

50

0

0 50 100 150 200 250 350300 400

4

Output Current (mA)

–55°C +25°C +125°C

www.ti.com

400

DC DROPOUT VOLTAGE vs TEMPERATURE

350

I

= 400mA

OUT

300 250 200 150 100

DC Dropout Voltage (mV)

50

0

–50 –25 0 25 50 75 100 125

Junction Temperature (°C)

REG113

SBVS031D

TYPICAL CHARACTERISTICS (Cont.)

0

10

20

30

40

50

60

70

80

90

100

5

15

25

35

45

55

65

75

85

95

30

25

20

15

10

5

0

Percentage of Units (%)

V

OUT

Drift (ppm/°C)

OUTPUT VOLTAGE DRIFT HISTOGRAM

For all models, at TJ = +25°C and V

= 1.8V, unless otherwise noted.

ENABLE

18

OUTPUT VOLTAGE ACCURACY HISTOGRAM

16 14 12 10

8 6

Percentage of Units (%)

4 2 0

0.0

0.2

–1.0

–0.8

–0.6

–0.4

–0.2

0.4

Error (%)

OUTPUT VOLTAGE vs TEMPERATURE

0.8

(Referred to I

0.6

0.4

= 200mA at +25°C)

OUT

I I I

OUT OUT OUT

0.2 0

–0.2 –0.4

Output Voltage Change (%)

–0.6 –0.8

–50 –25 0 25 50 75 100 125

Temperature (°C)

0.6

0.8

= 5mA = 200mA = 400mA

1.0

GROUND PIN CURRENT, NOT ENABLED

vs TEMPERATURE

1µ

V

= 0.5V

ENABLE

V

= V

+ 1V

IN

OUT

100n

(A)

10n

GND

I

1n

100p

–50 25–25 0 50 75 100 125

Temperature (°C)

REG113

1000

GROUND CURRENT vs LOAD CURRENT

V

= 2.5V

900 800

OUT

= 3.3V

V

OUT

= 5.0V

V

OUT

700 600

(µA)

500

GND

I

400 300 200 100

0

0 50 100 150 200 250 300 350 400

Load Current (mA)

SBVS031D

www.ti.com

1000

GROUND CURRENT vs TEMPERATURE

I

950

= 400mA

OUT

V

OUT

V

OUT

V

OUT

900

(µA)

850

GND

I

800

750

700

–50 –25 0 25 50 75 100 125

Temperature (°C)

= 2.5V = 3.3V = 5.0V

5

BURR-BROWN REG113 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual