BURR-BROWN REG710 User Manual

3

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

查询REG710NA-2.5/250G4供应商



SBAS221E − DECEMBER 2001 − REVISED SEPTEMBER 200

 

 

FEATURES

Wide Input Range: 1.8V to 5.5V

D D Automatic Step-Up/Step-Down Operation D Low Input Current Ripple D Low Output Voltage Ripple D Minimum Number of External

ComponentsNo Inductors

D 1MHz Internal Oscillator Allows Small

Capacitors

D Shutdown Mode D Thermal and Current Limit Protection D Six Output Voltages Available:

5.5V, 5.0V, 3.3V, 3.0V, 2.7V, 2.5V

D Small Packages:

− SOT23-6

− TSOT23-6 (REG71055 and REG71050 Only)

D Evaluation Modules Available:

REG710EVM-33, REG710EVM-5

APPLICATIONS

Smart Card Readers

D D SIM Card Supplies D Cellular Phones D Portable Communication Devices D Personal Digital Assistants D Notebook and Palm-Top Computers D Modems D Electronic Games D Handheld Meters D PCMCIA Cards D Card Buses D White LED Drivers D LCD Displays D Battery Backup Supplies

DESCRIPTION

The REG710 is a switched capacitor voltage converter, that produces a regulated, low-ripple output voltage from an unregulated input voltage. A wide-input supply voltage of 1.8V to 5.5V makes the REG710 ideal for a variety of battery sources, such as single cell Li-Ion, or two and three cell nickel- or alkaline-based chemistries.

The input voltage may vary above and below the output voltage and the output will remain in regulation. It works equally well for step-up or step-down applications without the need for an inductor, providing low EMI DC/DC conversion. The high switching frequency allows the use of small surface-mount capacitors, saving board space and reducing cost. The REG710 is thermally protected and current limited, protecting the load and the regulator during fault conditions. Typical ground pin current (quiescent current) is 65µA with no load, and less than 1µA in shutdown mode. The 5.5V version of the REG710 is available in a thin TSOT23-6 package. All other versions are available in a small SOT23-6 package.

C

PUMP

0.22µF

Enable

REG71050

C

IN

2.2µF

REG710−5

C

OUT

2.2µF

R

LEDGND

RR

LED LED

3.3V to

4.2V

REG710 Used in White LED Backlight Application

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

!  "#$%$" & '%%" & $# '()$" * %$'& $"#$% $ &#$"& %  %& $# +& !"&%'"& &"% %%",* %$'$" %$&&"- $& "$ "&&%), ")' &"- $# )) %%&*

www.ti.com

Copyright  2001−2003, Texas Instruments Incorporated



5.5V Output

5.5V Output 5V Output

5V Output 5V Output

5V Output

3.3V Output

3.3V Output 3V Output

3V Output

2.7V Output

2.5V Output

2.5V

SOT23−6

DBV

−40°C to +85°C

R10G

SBAS221E − DECEMBER 2001 − REVISED SEPTEMBER 2003

www.ti.com

ABSOLUTE MAXIMUM RATINGS

Supply Voltage −0.3V to +6.0V. . . . . . . . . . . . . . . . . . . . . . . . . . .

Enable Input −0.3V to V

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) +240°C. . . . . . . . . . . . . . . . . . .

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

. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(1)

IN

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.

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

PACKAGE ORDERING INFORMATION

PRODUCT

REG71055DDC

REG710NA-5

REG71050DDC

REG710NA-3.3

REG710NA-3

REG710NA-2.7

REG710NA-2.5

NOTES: (1) For the most current specifications and product information, refer to our web site at www.ti.com. (2) Voltage will be marked on reel.

OUTPUT

VOLTAGE

5.5V TSOT23−6 DDC −40°C to +85°C R10H

5.0V SOT23−6 DBV −40°C to +85°C R10B

5.0V TSOT23−6 DDC −40°C to +85°C GAAI

3.3V SOT23−6 DBV −40°C to +85°C R10C

3.0V SOT23−6 DBV −40°C to +85°C R10D

2.7V SOT23−6 DBV −40°C to +85°C R10F

PACKAGE-LEAD

PACKAGE

DESIGNATOR

(1)

SPECIFIED

TEMPERATURE

RANGE

°

PACKAGE

MARKING

(2)

ORDERING

NUMBER

REG71055DDCT Tape and Reel, 250 REG71055DDCR Tape and Reel, 3000

REG710NA-5/250 T ape and Reel, 250

REG710NA−5/3K Tape and Reel, 3000 REG71050DDCT Tape and Reel, 250 REG71050DDCR Tape and Reel, 3000

REG710NA-3.3/250 Tape and Reel, 250

REG710NA-3.3/3K Tape and Reel, 3000

REG710NA-3/250 T ape and Reel, 250

REG710NA-3/3K Tape and Reel, 3000

REG710NA-2.7/250 Tape and Reel, 250

REG710NA-2.7/3K Tape and Reel, 3000

REG710NA-2.5/250 Tape and Reel, 250

REG710NA-2.5/3K Tape and Reel, 3000

TRANSPORT

MEDIA, QUANTITY

PIN CONFIGURATION

Top View TSOT23/SOT23

1

V

OUT

2

GND

3

Enable

2

6

C

PUMP+

5

V

IN

4

C

−

PUMP

SIMPLIFIED BLOCK DIAGRAM

C

PUMP

0.22µF

46

Control

&

Thermal

V

IN

Enable

C

IN

2.2µF

5

3

REG710

2

GND

1

C

OUT

2.2µF

V

OUT

www.ti.com

with a resistive load not lower than typical V

.

ELECTRICAL CHARACTERISTICS Boldface limits apply over the specified temperature range, T

At TA = +25°C, VIN = V

OUT

/2 + 0.75V, I

= 10mA, CIN = C

OUT

= 2.2µF, C

PUMP

= 0.22µF, V



SBAS221E − DECEMBER 2001 − REVISED SEPTEMBER 2003

= −405C to +855C

A

= 1.3V, unless otherwise noted.

ENABLE

PARAMETER CONDITIONS

INPUT VOLTAGE

Tested Startup

REG71055 REG710-5 All Other Models 1.8 5.5 V

OUTPUT VOLTAGE

REG71055 I

REG710-5, REG71050 I

REG710-3.3 I

REG710-3 I

REG710-2.7 I

REG710-2.5 I

OUTPUT CURRENT

Nominal 30 mA Short Circuit

OSCILLATOR FREQUENCY EFFICIENCY RIPPLE VOLTAGE ENABLE CONTROL VIN = 1.8V to 5.5V

Logic High Input Voltage 1.3 V Logic Low Input Voltage −0.2 0.4 V Logic High Input Current 100 nA Logic Low Input Current 100 nA

THERMAL SHUTDOWN

Shutdown Temperature 160 °C Shutdown Recovery 140 °C

SUPPLY CURRENT

(Quiescent Current) I In Shutdown Mode VIN = 1.8V to 5.5V, Enable = 0V 0.01 1 µA

TEMPERATURE RANGE

Specification Ambient Temperature T Operating Ambient Temperature T Storage Ambient Temperature T Thermal Resistance, q

(1) (2)

(3) (4)

(1)

(2)

(3)

(4)

A A A

JA

The supply current is twice the output short-circuit current. The converter regulates by enabling and disabling periods of switching cycles. The switching frequency is the oscillator frequency during an active period. See efficiency curves for other VIN/V Effective Series Resistance (ESR) of capacitors is < 0.1Ω.

See conditions under Output Voltage

≤ 10mA, 3.0V ≤ VIN ≤ 5.5V 5.2 5.5 5.8 V

OUT

I

≤ 30mA, 3.25V ≤ VIN ≤ 5.5V 5.2 5.5 5.8 V

OUT

≤ 10mA, 2.7V ≤ VIN ≤ 5.5V 4.7 5.0 5.3 V

OUT

I

≤ 30mA, 3.0V ≤ VIN ≤ 5.5V 4.7 5.0 5.3 V

OUT

I

≤ 60mA, 3.3V ≤ VIN ≤ 4.2V 4.6 5.0 5.4 V

OUT

≤ 10mA, 1.8V ≤ VIN ≤ 5.5V 3.10 3.3 3.50 V

OUT

I

≤ 30mA, 2.2V ≤ VIN ≤ 5.5V 3.10 3.3 3.50 V

OUT

≤ 10mA, 1.8V ≤ VIN ≤ 5.5V 2.82 3.0 3.18 V

OUT

I

≤ 30mA, 2.2V ≤ VIN ≤ 5.5V 2.82 3.0 3.18 V

OUT

≤ 10mA, 1.8V ≤ VIN ≤ 5.5V 2.54 2.7 2.86 V

OUT

I

≤ 30mA, 2.0V ≤ VIN ≤ 5.5V 2.54 2.7 2.86 V

OUT

≤ 10mA, 1.8V ≤ VIN ≤ 5.5V 2.35 2.5 2.65 V

OUT

I

≤ 30mA, 2.0V ≤ VIN ≤ 5.5V 2.35 2.5 2.65 V

OUT

I

= 10mA, VIN = 1.8V, REG710−3.3 90 %

OUT

I

= 30mA 35 mVp−p

OUT

= 0mA 65 100 µA

OUT

SOT23−6 200 °C/W

TSOT23−6 220 °C/W

configurations.

OUT

OUT/IOUT

MIN TYP MAX

3.0 5.5 V

2.7 5.5 V

−40 +85 °C

−55 +125 °C

−65 +150 °C

REG710NA

100 mA

1.0 MHz

IN

UNITS

V

3



SBAS221E − DECEMBER 2001 − REVISED SEPTEMBER 2003

TYPICAL CHARACTERISTICS

www.ti.com

At TA = +25°C, VIN = V

90

80

70

60

Efficiency(%)

50

REG710−2.5

REG710−2.7

40

30

90

80

70

60

2 2.5 3 3.5 4 4.5 5 5.51.5

/2 + 0.75V, I

OUT

EFFICIENCY vs V

REG710−5, REG71050

REG710−3.3

REG710−3

VIN(V)

EFFICIENCY vs LOAD CURRENT

(REG710−3.3V)

V

IN

OUT

VIN=1.8V

=2.2V

= 5mA, CIN = C

IN

REG71055

OUT

= 2.2µF, C

PUMP

90

80

70

60

Efficiency(%)

50

40

30

90

80

70

60

= 0.22µF, V

ENABLE

EFFICIENCY vs LOAD CURRENT

= 1.3V, unless otherwise noted.

(REG710−5V,REG71050)

VIN=2.7V

1101000.1 Load Current (mA)

(REG710−3V)

VIN=1.8V

V

VIN=3V

VIN=3.3V VIN=3.6V

VIN=4.2V

VIN=V

OUT

=2.2V

IN

Efficiency (%)

50

40

30

EFFICIENCY vs LOAD CURRENT

80 75 70 65 60 55 50 45 40 35 30

VIN=V

1101000.1 Load Current (mA)

(REG710−2.7V)

VIN=1.8V

VIN=V

1101000.1 Load Current (mA)

OUT

V

=2.2V

IN

Efficiency (%)

50

40

30

EFFICIENCY vs LOAD CURRENT

80 75 70 65 60 55 50 45 40 35 30

VIN=V

1101000.1 Load Current (mA)

(REG710−2.5V)

VIN=1.8V

V

=2.2V

IN

VIN=V

1101000.1 Load Current (mA)

OUT

4

www.ti.com

OUTPUT VOLTAGE vs TEMPERATURE

OUTPUT VOLTAGE DRIFT HISTOGRAM



SBAS221E − DECEMBER 2001 − REVISED SEPTEMBER 2003

TYPICAL CHARACTERISTICS (Cont.)

At TA = +25°C, VIN = V

SUPPLY CURRENT vs TEMPERATURE

100

80

A)

µ

60

40

SupplyCurrent (

20

0

−30−

−

20 18 16 14 12 10

8 6

Supply Current(nA)

4 2 0

−

20 0 102030405060708090

40

SUPPLY CURRENT vs TEMPERATURE

−30−

20

40

/2 + 0.75V, I

OUT

(No Load)

−

10

Temperature (_C)

(Not Enabled)

−

10

0 102030405060708090

Temperature (_C)

= 5mA, CIN = C

OUT

= 2.2µF, C

20mV/div V

10mA/div

2V/div

50mV/div

PUMP

4.5V

3.5V

= 0.22µF, V

BW = 20MHz

REG710−3.3V

R

=110

L

Boost Mode

Ω

BW = 20MHz

ENABLE

LOAD TRANSIENTRESPONSE

LINE TRANSIENT RESPO NSE

= 1.3V, unless otherwise noted.

Time (10µs/div)

Buck Mode

Time (50µs/div)

I

LOAD

V

OUT

IN

OUT

0.2

0.1

0.0

−

0.1

−

0.2

−

0.3

−

0.4

Output VoltageChange (%)

−

0.5

−

0.6

−

20 0

40

20

40 60 80 100 120 140

JunctionTemperature (_C)

25

20

15

10

Percentage of Units (%)

5

0

92

68

44

20

140

−

<

116

−

<

−

<

−

<

V

OUT

<4

−

<

Drift (ppm/_C)

<28

<52

<76

< 100

> 100

5



SBAS221E − DECEMBER 2001 − REVISED SEPTEMBER 2003

TYPICAL CHARACTERISTICS (Cont.)

www.ti.com

At TA = +25°C, VIN = V

C

OUT

20mV/div

C

=10µF, C

OUT

20mV/div

BW = 20MHz

90 80 70

)

PP

60 50 40 30

OutputRipple (mV

20 10

0

1.5 2 2.5 3 3.5 4

/2 + 0.75V, I

OUT

= 5mA, CIN = C

OUT

OUTPUTRIPPLE VOLTAGE

=2.2µF

=1µF

PUMP

Time (5µs/div)

OUTPUT RIPPLE VOLTAGE vs V

(REG710−2.7V, 3.3V)

REG710−2.7

C

=2.2µF

OUT

REG710−3.3 C

=2.2µF

OUT

V

(V)

IN

REG710−3.3V

V

=2.4V

IN

R

=332

L

IN

REG710−2.7 C

=10µF

OUT

REG710−3.3 C

=10µF

OUT

4.5 5 5.5

OUT

Ω

= 2.2µF, C

PUMP

= 0.22µF, V

ENABLE

= 1.3V, unless otherwise noted.

SHORT−CIRCUIT LOAD CURRENT vs V

250 225 200 175 150 125 100

75

Load Current(mA)

50 25

0

2 2.5 3 3.5 4 4.5 5 5.51.5

VIN(V)

INPUT CURRENT ATTURN−ON

100mA/div I

2V/div

REG710−3.3V

BW = 20MHz

61

Time (50µs/div)

IN

V

=3.0V

IN

I

=30mA

O

IN

V

OUT

OUTPUT RIPPLE VOLTAGE vs V

(REG710−2.5V, 3V, 5V)

IN

90

=2.2µF

REG710−3

C

=2.2µF

OUT

=10µF

OUT

REG710−5 REG71050

=2.2µF

C

OUT

REG710−5 REG71050

=10µF

C

OUT

REG710−3

C

=10µF

OUT

80 70

)

PP

60 50 40 30

OutputRipple (mV

20 10

0

REG710−2.5

C

OUT

REG710−2.5, C

1.5 2 2.5 3 3.5 4 4.5 5 5.5 61 (V)

V

IN

6

BURR-BROWN REG710 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual