REG71055

Manufacturer Part NumberREG71055
DescriptionThe REG710 is a switched capacitor voltage converterthat produces a regulated, low-ripple output voltage from an unregulated input voltage
ManufacturerTexas Instruments
REG71055 datasheet
 


Specifications of REG71055

Iout(max)(a)0.06Iq(typ)(ma)0.065
Switching Frequency(max)(khz)1000Vin(min)(v)3
Vin(max)(v)5.5Vout(min)(v)5.5
Vout(max)(v)5.5Preset Vout(v)5.5
Efficiency(typ)(%)90TopologyBuck-Boost
Operating Temperature Range(c)-40 to 85Pin/package6SOT
Regulated Outputs(#)1  
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60mA, 5.0V, Buck/Boost Charge Pump
FEATURES
1
Wide Input Range: 1.8V to 5.5V
2
Automatic Step-Up/Step-Down Operation
Low Input Current Ripple
Low Output Voltage Ripple
Minimum Number of External
Components—No Inductors
1MHz Internal Oscillator Allows Small
Capacitors
Shutdown Mode
Thermal and Current Limit Protection
Six Output Voltages Available:
– 5.5V, 5.0V, 3.3V, 3.0V, 2.7V, 2.5V
Small Packages:
– SOT23-6
– TSOT23-6
(REG71055
and
– TQFN-6 (2×2×0.8mm;
REG71050
Evaluation Modules Available:
– REG710EVM-33,
REG710EVM-5
APPLICATIONS
Smart Card Readers
SIM Card Supplies
Cellular Phones
Portable Communication Devices
Personal Digital Assistants
Notebook and Palm-Top Computers
Modems
Electronic Games
Handheld Meters
PCMCIA Cards
Card Buses
White LED Drivers
LCD Displays
Battery Backup Supplies
1
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.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
in ThinSOT-23 and ThinQFN
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 remains in regulation. It
works
equally
applications without the need for an inductor,
providing low EMI dc/dc conversion. The high
switching
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 65 A with no load, and
REG71050
Only)
less than 1 A in shutdown mode.
Only)
Enable
3.3V to
4.2V
REG710 Used in White LED Backlight Application
REG710
SBAS221G – DECEMBER 2001 – REVISED JANUARY 2009
well
for
step-up
or
step-down
frequency
allows
the
use
of
C
PUMP
0.22 F
m
REG71050
REG710-5
R
R
C
C
IN
OUT
2.2 F
2.2 F
m
m
GND
LED
LED
Copyright © 2001–2009, Texas Instruments Incorporated
small
R
LED

REG71055 Summary of contents

  • Page 1

    ... Internal Oscillator Allows Small Capacitors Shutdown Mode Thermal and Current Limit Protection Six Output Voltages Available: – 5.5V, 5.0V, 3.3V, 3.0V, 2.7V, 2.5V Small Packages: – SOT23-6 – TSOT23-6 (REG71055 and – TQFN-6 (2×2×0.8mm; REG71050 Evaluation Modules Available: – REG710EVM-33, REG710EVM-5 APPLICATIONS Smart Card Readers ...

  • Page 2

    ... Product Folder Link(s): REG710 www.ti.com ORDERING TRANSPORT (2) NUMBER MEDIA, QUANTITY REG71055DDCT Tape and Reel, 250 Tape and Reel, REG71055DDCR 3000 REG710NA-5/250 Tape and Reel, 250 Tape and Reel, REG710NA−5/3K 3000 REG71050DDCT Tape and Reel, 250 Tape and Reel, REG71050DDCR ...

  • Page 3

    ... V IN Enable Copyright © 2001–2009, Texas Instruments Incorporated SBAS221G – DECEMBER 2001 – REVISED JANUARY 2009 PIN CONFIGURATIONS TSOT23/SOT23 (TOP VIEW OUT PUMP GND Enable C PUMP- TQFN (TOP VIEW PUMP+ OUT ...

  • Page 4

    ... Boldface limits apply over the specified temperature range +25° 0.75V OUT OUT noted. PARAMETER INPUT VOLTAGE Tested Startup REG71055 REG710-5 All other models OUTPUT VOLTAGE REG71055 REG710-5, REG71050 REG710-3.3 REG710-3 REG710-2.7 REG710-2.5 OUTPUT CURRENT Nominal (1) Short-circuit (2) OSCILLATOR FREQUENCY (3) EFFICIENCY (4) RIPPLE VOLTAGE ENABLE CONTROL ...

  • Page 5

    ... OUT 0.1 1 Load Current (mA) Figure 5. Copyright © 2001–2009, Texas Instruments Incorporated SBAS221G – DECEMBER 2001 – REVISED JANUARY 2009 TYPICAL CHARACTERISTICS = 5mA 2 0.22 F, and V IN OUT PUMP noted REG71055 0.1 4.5 5.0 5 100 0.1 ...

  • Page 6

    ... Product Folder Link(s): REG710 www.ti.com = 1.3V, unless otherwise ENABLE LOAD TRANSIENT RESPONSE Time (10 s/div) m Figure 8. LINE TRANSIENT RESPONSE W Buck Mode Time (50 s/div) m Figure 10. V Drift (ppm/ C) ° OUT Figure 12. Copyright © 2001–2009, Texas Instruments Incorporated V OUT I LOAD OUT ...

  • Page 7

    ... V (V) IN Figure 15 Copyright © 2001–2009, Texas Instruments Incorporated SBAS221G – DECEMBER 2001 – REVISED JANUARY 2009 = 5mA 2 0.22 F, and V IN OUT PUMP SHORT-CIRCUIT LOAD CURRENT vs V 250 225 200 175 150 125 100 75 REG710-3. ...

  • Page 8

    ... Step-Up (Boost) Mode Product Folder Link(s): REG710 www.ti.com Figure 19B, and the voltage . The output voltage supplies most of the charge required IN V OUT OUT OFF C PUMP OUT C OUT (B) Copyright © 2001–2009, Texas Instruments Incorporated ...

  • Page 9

    ... ECJ−2VBIC224K ECJ−2VBIC104 EMK316BJ225KL Taiyo Yuden TKM316BJ224KF Copyright © 2001–2009, Texas Instruments Incorporated SBAS221G – DECEMBER 2001 – REVISED JANUARY 2009 pump capacitors (C also be surface-mount ceramic types. In all cases, X7R or X5R dielectric are recommended. See the typical operating circuit shown in component values ...

  • Page 10

    ... PRODUCT CHANGES AT V REG710-2.5 REG710-2.7 REG710-3 REG710-3.3 REG710-5, REG71050, Step-up only REG71055 10 Submit Documentation Feedback 2009........................................................................................................................................... LAYOUT Large transient currents flow in the V GND traces. To minimize both input and output ripple, keep the capacitors as close as possible to the regulator using short, direct circuit traces. ...

  • Page 11

    ... Figure 22. REG710 Circuit for Step-Up Operation from 1.8V to 5.0V with 10mA Output Current + - Figure 23. REG710 Circuit for Doubling the Output Current 3.3V to 4.2V Figure 24. REG710 Circuit for Driving LEDs Copyright © 2001–2009, Texas Instruments Incorporated SBAS221G – DECEMBER 2001 – REVISED JANUARY 2009 APPLICATION CIRCUITS 0. ...

  • Page 12

    ... Figure 25. REG710 with Negative Bias Supply 12 Submit Documentation Feedback 2009........................................................................................................................................... 0.22mF OUT REG710-3.3 2.2mF EN GND 2.2mF 74HC04 5818 5818 2.2mF Copyright © 2001–2009, Texas Instruments Incorporated Product Folder Link(s): REG710 www.ti.com 3. -2.7V at 1mA when I = 10mA L ...

  • Page 13

    ... REG71050DRVRG4 ACTIVE SON REG71050DRVT ACTIVE SON REG71050DRVTG4 ACTIVE SON REG71055DDCR ACTIVE SOT REG71055DDCRG4 ACTIVE SOT REG71055DDCT ACTIVE SOT REG71055DDCTG4 ACTIVE SOT REG710NA-2.5/250 ACTIVE SOT-23 REG710NA-2.5/250G4 ACTIVE SOT-23 REG710NA-2.5/3K ACTIVE SOT-23 REG710NA-2.5/3KG4 ACTIVE SOT-23 REG710NA-2.7/250 ACTIVE SOT-23 Pins ...

  • Page 14

    Orderable Device (1) Package Type Package Status REG710NA-2.7/250G4 ACTIVE SOT-23 REG710NA-3.3/250 ACTIVE SOT-23 REG710NA-3.3/250G4 ACTIVE SOT-23 REG710NA-3.3/3K ACTIVE SOT-23 REG710NA-3.3/3KG4 ACTIVE SOT-23 REG710NA-3/250 ACTIVE SOT-23 REG710NA-3/250G4 ACTIVE SOT-23 REG710NA-3/3K ACTIVE SOT-23 REG710NA-3/3KG4 ACTIVE SOT-23 REG710NA-5/250 ACTIVE SOT-23 REG710NA-5/250G4 ACTIVE ...

  • Page 15

    ... TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold Customer on an annual basis. OTHER QUALIFIED VERSIONS OF REG71055 : Automotive: REG71055-Q1 • ...

  • Page 16

    ... REG71050DDCT SOT DDC REG71050DRVR SON DRV REG71050DRVR SON DRV REG71050DRVT SON DRV REG71050DRVT SON DRV REG71055DDCR SOT DDC REG71055DDCT SOT DDC REG710NA-2.5/250 SOT-23 DBV REG710NA-2.5/3K SOT-23 DBV REG710NA-2.7/250 SOT-23 DBV REG710NA-3.3/250 SOT-23 DBV REG710NA-3.3/3K SOT-23 DBV REG710NA-3/250 ...

  • Page 17

    ... Device Package Type REG71050DDCR SOT REG71050DDCT SOT REG71050DRVR SON REG71050DRVR SON REG71050DRVT SON REG71050DRVT SON REG71055DDCR SOT REG71055DDCT SOT REG710NA-2.5/250 SOT-23 REG710NA-2.5/3K SOT-23 REG710NA-2.7/250 SOT-23 REG710NA-3.3/250 SOT-23 REG710NA-3.3/3K SOT-23 REG710NA-3/250 SOT-23 REG710NA-3/3K SOT-23 REG710NA-5/250 ...

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    ... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’ ...