REG71055-Q1 TI1 | Alldatasheet
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DESCRIPTION
2.2 F/c109
0.22 F/c109
3.3V□to 4.2V C OUT R LEDGND Enable REG71055 LED LED R R REG71055-Q1 www.ti.com SBAS477 JULY 2009 30-mA 5.5-V BOOST CHARGE PUMP Qualified for Automotive
Applications
Range: 3.0 V to 5.5 V Shutdown Mode Automatic Step-Up Operation Thermal and Current Limit Protection Low Input Current Ripple 5.5-V Output Voltage Low Output Voltage Ripple Small TSOT23-6 (DDC) Package Minimum Number of External Components, No Inductors 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 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 µ A with no load, and less than µ A in shutdown mode. White LED Backlight Application Please be aware that an important notice concerning availability, standard warranty, and use in critical sheet. PRODUCTION DATA information is current as of publication date. Copyright 2009, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
C PUMP+ VIN CPUMP/c45 VIN Enable 4 6
1 VOUT
2 GND
2.2 µF COUT 2.2 µF CPUMP 0.22 µF REG71055-Q1 SBAS477 JULY 2009 www.ti.com 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. ORDERING INFORMATION (1) T A PACKAGE (2) ORDERABLE PART NUMBER TOP-SIDE MARKING C to C TSOT-23 DDC Reel of 3000 REG71055IDDCRQ1 GIXI (1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI web site at www.ti.com (2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging DDC PACKAGE (TOP VIEW) SIMPLIFIED BLOCK DIAGRAM Submit Documentation Feedback Copyright 2009, Texas Instruments Incorporated Product Folder Link(s): REG71055-Q1
(1) ELECTRICAL CHARACTERISTICS REG71055-Q1 www.ti.com SBAS477 JULY 2009 V IN Supply voltage V to V V EN Enable input voltage 0.3 V to V IN t SC Output short-circuit duration Indefinite T STG Storage temperature range C to 150 C T LEAD Lead temperature (soldering, seconds) 260 C (1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those specified is not implied. Boldface limits apply over the specified temperature range, T A C to C T A V IN V OUT 0.75 I OUT mA, C IN C OUT 2.2 µ C PUMP 0.22 µ and V ENABLE 1.3 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT See conditions under Output Voltage with a Input voltage, tested startup resistive load no lower than typical 3.0 5.5 V V OUT OUT I OUT mA, 3.0 V V IN 5.5 V 5.2 5.5 5.8 V Output voltage I OUT mA, 3.25 V V IN 5.5 V 5.2 5.5 5.8 V Nominal output current mA Short-circuit output current (1) 100 mA Oscillator frequency (2) 1.0 MHz Efficiency (3) I OUT mA, V IN 3.0 V Ripple voltage (4) I OUT mA mV PP Logic high input voltage, Enable V IN 3.0V to 5.5 V 1.3 V IN V Logic low input voltage, Enable V IN 3.0V to 5.5 V 0.2 0.4 V Logic high input current, Enable V IN 3.0V to 5.5 V 100 nA Logic low input current, Enable V IN 3.0V to 5.5 V 100 nA Thermal shutdown temperature 160 C Thermal shutdown recovery 140 C Quiescent current (5) I OUT mA, V IN 5.5 V 100 µ A Quiescent current in shutdown mode V IN 3.0 V to 5.5 Enable V 0.01 µ A Specified ambient temperature T A C Thermal resistance θ JA TSOT23-6 220 C/W (1) The supply current is twice the output short-circuit current. (2) The converter regulates by enabling and disabling periods of switching cycles. The switching frequency is the oscillator frequency during an active period. (3) See efficiency curves for other V IN OUT configurations. (4) Effective series resistance (ESR) of capacitors is 0.1 Ω (5) Measured when the device is not switching. Copyright 2009, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): REG71055-Q1
T emperature□( C)/c176 Supply□Current□( A) /c109 100 /c45 30 /c45 20 0 10 20 30 40 50 60 70 80 90/c45 40 /c45 10 V (V)IN Efficiency□(%) 2.0 2.5 20mV/div VOUT ILOAD 10mA/div Time□(10 s/div)/c109 BW□=□20MHz T emperature□( C)/c176 Supply□Current□(nA) /c45 30 /c45 20 /c45 10 0 10 20 30 40 50 60 70 80 90/c45 40 Junction□T emperature□( C)/c176 Output□Voltage□Change□(%) 0.2 0.1 0.0 /c45 0.1 /c45 0.2 /c45 0.3 /c45 0.4 /c45 0.5 /c45 0.6 /c45 20 0 20 40 60 80 100 120 140/c45 40 V Drift□(ppm/ C)OUT /c176 Percentage□of□Units□(%) 140/c45 116/c45 < 92/c45 < 68 /c45 < 44 /c45 < 20 REG71055-Q1 SBAS477 JULY 2009 www.ti.com T A V IN V OUT 0.75 I OUT mA, C IN C OUT 2.2 µ C PUMP 0.22 µ and V ENABLE 1.3 V (unless otherwise noted) SUPPLY CURRENT vs TEMPERATURE EFFICIENCY vs V IN (No Load) Figure Figure SUPPLY CURRENT vs TEMPERATURE LOAD TRANSIENT RESPONSE (Not Enabled) Figure Figure OUTPUT VOLTAGE vs TEMPERATURE OUTPUT VOLTAGE DRIFT HISTOGRAM Figure Figure Submit Documentation Feedback Copyright 2009, Texas Instruments Incorporated Product Folder Link(s): REG71055-Q1
V (V)IN Load□Current□(mA) 250 225 200 175 150 125 100 REG71055-Q1 www.ti.com SBAS477 JULY 2009 TYPICAL CHARACTERISTICS (continued) T A V IN V OUT 0.75 I OUT mA, C IN C OUT 2.2 µ C PUMP 0.22 µ and V ENABLE 1.3 V (unless otherwise noted) SHORT-CIRCUIT LOAD CURRENT vs V IN Figure Copyright 2009, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): REG71055-Q1
Step-Down□(Buck)□Mode OFF ON CPUMP CIN COUT VOUT VIN Step-Up□(Boost)□Mode(A) (B) OFF ON ON OFF CPUMP COUT VOUT CPUMP COUT VOUT OFF ON ON OFF CIN VIN CIN VIN REG71055-Q1 SBAS477 JULY 2009 www.ti.com The REG71055 regulated charge pump provides a regulated output voltage for input voltages ranging from less than the output to greater than the output. This is accomplished by automatic mode switching within the device. When the input voltage is greater than the required output, the unit functions as a variable frequency switch-mode regulator. This operation is shown in Figure Transistors Q and Q are held off, Q is on, and Q is switched as needed to maintain a regulated output voltage. When the input voltage is less than the required output voltage, the device switches to a step-up or boost mode of operation, as shown in Figure A conversion clock of 50% duty cycle is generated. During the first half cycle the FET switches are configured as shown in Figure and C PUMP charges to V IN During the second half cycle the FET switched are configured as shown in Figure and the voltage on C PUMP is added to V IN The output voltage is regulated by skipping clock cycles as necessary. In normal operation, the charging of the pump and output capacitors usually leads to relatively high peak input currents which can be much higher than that of the average load current. The regulator incorporates circuitry to limit the input peak current, lowering the total EMI production of the device and lowering output voltage ripple and input current ripple. Input capacitor IN supplies most of the charge required by input current peaks. Figure Simplified Schematic of the REG71055 Operating in the Step-Down Mode Figure Simplified Schematic of the REG71055 Operating in the Step-Up or Boost Mode Submit Documentation Feedback Copyright 2009, Texas Instruments Incorporated Product Folder Link(s): REG71055-Q1
2.2/c109F COUT 2.2/c109F CPUMP 0.22/c109F 4 63 5 1 REG71055-Q1 www.ti.com SBAS477 JULY 2009 The regulator has thermal shutdown circuitry that protects it from damage caused by overload conditions. The thermal protection circuitry disables the output when the junction temperature reaches approximately 160 allowing the device to cool. When the junction temperature cools to approximately 140 the output circuitry is automatically reenabled. Continuously running the regulator into thermal shutdown can degrade reliability. The regulator also provides current limit to protect itself and the load. The EN pin enables the IC when pulled high and places it into energy-saving shutdown mode when pulled low. When in shutdown mode, the output is disconnected from the input and the quiescent current is reduced to 0.01 µ A typical. This shutdown mode functionality is only valid when V IN is above the minimum recommended operating voltage. The EN pin cannot be left floating and must be actively terminated either high or low. For minimum output voltage ripple, the output capacitor C OUT should be a ceramic, surface-mount type. Tantalum capacitors generally have a higher effective series resistance (ESR) and may contribute to higher output voltage ripple. Leaded capacitors also increase ripple due to the higher inductance of the package itself. To achieve best operation with low input voltage and high load current, the input and pump capacitors IN and C PUMP respectively) should also be surface-mount ceramic types. In all cases, X7R or X5R dielectric are recommended. See the typical operating circuit shown in Figure for component values. Figure 10. Typical Operating Circuit With light loads or higher input voltage, a smaller 0.1 µ F pump capacitor PUMP and smaller µ F input and output capacitors IN and C OUT respectively) can be used. To minimize output voltage ripple, increase the output capacitor, C OUT to µ F or larger. The capacitors listed in Table can be used with the REG71055. This table is only a representative list of compatible parts. Table Suggested Capacitors RATED DIELECTRIC PACKAGE WORKING MANUFACTURER PART NUMBER VALUE TOLERANCE MATERIAL SIZE VOLTAGE C1206C255K8RAC 2.2 µ F 10% X7R 1206 V Kemet C1206C224K8RAC 0.22 µ F 10% X7R 1206 V ECJ 2YBOJ225K 2.2 µ F 10% X5R 805 6.3 V Panasonic ECJ 2VBIC224K 0.22 µ F 10% X7R 805 V ECJ 2VBIC104 0.1 µ F 10% X7R 805 V EMK316BJ225KL 2.2 µ F 10% X7R 1206 V Taiyo Yuden TKM316BJ224KF 0.22 µ F 10% X7R 1206 V Copyright 2009, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): REG71055-Q1
Efficiency□(%)□=□V /(2 V ) 100 (step-up□operating□mode) or (step-down□operating□mode) OUT IN /c180 /c180 V V OUT IN /c180100 Layout VENABLE VIN CIN GNDCP VOUT COUT REG71055-Q1 SBAS477 JULY 2009 www.ti.com The efficiency of the charge pump regulator varies with the output voltage version, the applied input voltage, the load current, and the internal operation mode of the device. The approximate efficiency is given by: Table lists the approximate values of the input voltage at which the device changes internal operating mode. See efficiency curves in the Typical Characteristics section for various loads and input voltages. Table Operating Mode Change vs V IN PRODUCT OPERATING MODE CHANGES AT V IN OF REG71055 Step-up only Large transient currents flow in the V IN V OUT and GND traces. To minimize both input and output ripple, keep the capacitors as close as possible to the regulator using short, direct circuit traces. A suggested printed circuit board (PCB) routing is shown in Figure The trace lengths from the input and output capacitors have been kept as short as possible. Figure 11. Suggested PCB Design for Minimum Ripple Submit Documentation Feedback Copyright 2009, Texas Instruments Incorporated Product Folder Link(s): REG71055-Q1
2.2 F/c109 2.2 F/c109 COUT /c45 REG710-3.3 REG710-3 REG71050 REG710-5 3.3V 3.0V 5.0V EN GND V IN VOUT 1.8V REG710-3.3 REG710-3.3
4.7 F/c109
/c45 CIN 3.3V□to 4.2V C OUT R LEDGND Enable REG71050 REG710-5 LED LED R R REG71055-Q1 www.ti.com SBAS477 JULY 2009 Figure 12. Circuit for Step-Up Operation From 1.8 V to V With 10-mA Output Current Figure 13. Circuit for Doubling the Output Current Figure 14. Circuit for Driving LEDs Copyright 2009, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): REG71055-Q1
0.22/c109 F REG710-3.3 GND 2.2/c109 F 2.2 /c109 F 2.2/c109 F VIN VOUT 2.2/c109 F EN RL C/c45 C+ IL 74HC04 3.3V /c45 2.7V□at□1mA when□I =□10mAL 5818 5818 V V/c163IN OUT REG71055-Q1 SBAS477 JULY 2009 www.ti.com Figure 15. Negative Bias Supply Submit Documentation Feedback Copyright 2009, Texas Instruments Incorporated Product Folder Link(s): REG71055-Q1
Orderable Device Status(1) Package Type Package Drawing Pins Package Qty Eco Plan(2) Lead/Ball FinishMSL Peak Temp (3) REG71055IDDCRQ1 ACTIVE SOT DDC 6 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIM (1)The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2)Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontentfor the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS):TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt):This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br):TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no 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 by TI to Customer on an annual basis. OTHER QUALIFIED VERSIONS OF REG71055-Q1 :
- Catalog:REG71055 NOTE: Qualified Version Definitions:
- Catalog - TI's standard catalog product PACKAGE OPTION ADDENDUM www.ti.com 24-Aug-2009 Addendum-Page 1
*All dimensions are nominal Device Package Type Package Drawing Pins SPQ Reel Diameter (mm) Reel Width W1 (mm) (mm) (mm) (mm) (mm) W (mm) Pin1 Quadrant PACKAGE MATERIALS INFORMATION www.ti.com 20-Jul-2010 Pack Materials-Page 1
*All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) REG71055IDDCRQ1 SOT DDC 6 3000 203.0 203.0 35.0 PACKAGE MATERIALS INFORMATION www.ti.com 20-Jul-2010 Pack Materials-Page 2
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