REG71055-Q1

Manufacturer Part NumberREG71055-Q1
DescriptionThe REG71055 is a switched capacitor voltage converter that produces a regulated, low-ripple output voltage from an unregulated input voltage
ManufacturerTexas Instruments
REG71055-Q1 datasheet
 


Specifications of REG71055-Q1

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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FEATURES
1
Qualified for Automotive Applications
Input Voltage Range: 3.0 V to 5.5 V
Automatic Step-Up Operation
Low Input Current Ripple
Low Output Voltage Ripple
Minimum Number of External Components, No
Inductors
DESCRIPTION
The REG71055 is a switched capacitor voltage converter that produces a regulated, low-ripple output voltage
from an unregulated input voltage. Input supply voltage of 3.0 V to 5.5 V makes the REG71055 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 below the output voltage and the output remains in regulation. It works equally well
for step-up 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
REG71055 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 less than 1 A in shutdown
mode.
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.
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.
30-mA 5.5-V BOOST CHARGE PUMP
1-MHz Internal Oscillator Allows Small
Capacitors
Shutdown Mode
Thermal and Current Limit Protection
5.5-V Output Voltage
Small TSOT23-6 (DDC) Package
C
PUMP
0.22 F
m
Enable
REG71055
3.3V to
R
4.2V
C
C
IN
OUT
2.2 F
2.2 F
m
m
GND
LED
White LED Backlight Application
REG71055-Q1
SBAS477 – JULY 2009
R
R
LED
LED
Copyright © 2009, Texas Instruments Incorporated

REG71055-Q1 Summary of contents

  • Page 1

    ... Shutdown Mode Thermal and Current Limit Protection 5.5-V Output Voltage Small TSOT23-6 (DDC) Package C PUMP 0. Enable REG71055 3. 4. OUT 2 GND LED White LED Backlight Application REG71055-Q1 SBAS477 – JULY 2009 R R LED LED Copyright © 2009, Texas Instruments Incorporated ...

  • Page 2

    ... V C PUMP+ OUT GND Enable C PUMP- SIMPLIFIED BLOCK DIAGRAM C PUMP 0.22 µ REG71055 C IN 2.2 µF Control & 3 Thermal 2 GND Product Folder Link(s): REG71055-Q1 www.ti.com (1) TOP-SIDE MARKING GIXI 1 V OUT C OUT 2.2 µF Copyright © 2009, Texas Instruments Incorporated ...

  • Page 3

    ... 3. 5.5 V OUT 3 5.5 V, Enable = TSOT23-6 configurations. Product Folder Link(s): REG71055-Q1 REG71055-Q1 SBAS477 – JULY 2009 –0 Indefinite –65°C to 150°C 260°C = 1.3 V (unless otherwise ENABLE MIN TYP MAX UNIT 3.0 5 ...

  • Page 4

    ... Product Folder Link(s): REG71055-Q1 www.ti.com = 1.3 V (unless otherwise ENABLE SUPPLY CURRENT vs TEMPERATURE (No Load) - Temperature ( C) ° Figure 2. SUPPLY CURRENT vs TEMPERATURE (Not Enabled Temperature ( C) ° ...

  • Page 5

    ... Copyright © 2009, Texas Instruments Incorporated = 0.22 F, and V IN OUT PUMP SHORT-CIRCUIT LOAD CURRENT vs V 250 225 200 175 150 125 100 1.5 2.0 2.5 3.0 3.5 4.0 V (V) IN Figure 7. Product Folder Link(s): REG71055-Q1 REG71055-Q1 SBAS477 – JULY 2009 = 1.3 V (unless otherwise ENABLE IN 4.5 5.0 5.5 Submit Documentation Feedback 5 ...

  • Page 6

    ... PUMP OFF IN Step-Down (Buck) Mode OFF OUT C OUT Step-Up (Boost) Mode Product Folder Link(s): REG71055-Q1 and Q are held off on, and Figure 9B, and the voltage SWITCHED OUT C OUT OFF C ...

  • Page 7

    ... Table 1. Suggested Capacitors VALUE TOLERANCE 2.2 F ±10% 0.22 F ±10% 2.2 F ±10% 0.22 F ±10% 0.1 F ±10% 2.2 F ±10% 0.22 F ±10% Product Folder Link(s): REG71055-Q1 REG71055-Q1 SBAS477 – JULY 2009 is above the minimum recommended IN and OUT C OUT 2.2mF ) and smaller 1 F input and PUMP DIELECTRIC PACKAGE WORKING MATERIAL SIZE VOLTAGE ...

  • Page 8

    ... GND traces. To minimize both input and output ripple, keep IN OUT Figure V AREA: < 0.08 sq. inches ENABLE GND Product Folder Link(s): REG71055-Q1 www.ti.com Step-up only 11. The trace lengths from the input and V OUT C OUT Copyright © 2009, Texas Instruments Incorporated ...

  • Page 9

    ... GND C PUMP 0. Enable REG71050 REG710 OUT 2 GND LED Figure 14. Circuit for Driving LEDs Product Folder Link(s): REG71055-Q1 REG71055-Q1 SBAS477 – JULY 2009 5.0V V OUT 2 OUT V OUT 4 OUT R R LED LED Submit Documentation Feedback ...

  • Page 10

    ... V V £ IN OUT 10 Submit Documentation Feedback 0.22mF OUT REG710-3.3 2.2mF 2.2mF EN GND 2.2mF 74HC04 5818 5818 Figure 15. Negative Bias Supply Product Folder Link(s): REG71055-Q1 www.ti.com 3. -2.7V at 1mA when I = 10mA L 2.2mF Copyright © 2009, Texas Instruments Incorporated ...

  • Page 11

    ... 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-Q1 : Catalog: REG71055 • ...

  • Page 12

    ... TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Type Drawing REG71055IDDCRQ1 SOT DDC PACKAGE MATERIALS INFORMATION Pins SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 6 3000 179.0 8.4 3.2 Pack Materials-Page 1 20-Jul-2010 Pin1 (mm) (mm) (mm) (mm) Quadrant 3.2 1.4 4.0 8.0 Q3 ...

  • Page 13

    ... Device Package Type REG71055IDDCRQ1 SOT PACKAGE MATERIALS INFORMATION Package Drawing Pins SPQ Length (mm) DDC 6 3000 Pack Materials-Page 2 20-Jul-2010 Width (mm) Height (mm) 203.0 203.0 35.0 ...

  • Page 14

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  • Page 15

    ... 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’ ...