REG71055DDC [TI]

60mA, 5.0V, Buck/Boost Charge Pump in ThinSOT-23 and ThinQFN; 60毫安, 5.0V ,降压/升压充电泵采用ThinSOT -23和ThinQFN
REG71055DDC
型号: REG71055DDC
厂家: TEXAS INSTRUMENTS    TEXAS INSTRUMENTS
描述:

60mA, 5.0V, Buck/Boost Charge Pump in ThinSOT-23 and ThinQFN
60毫安, 5.0V ,降压/升压充电泵采用ThinSOT -23和ThinQFN

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REG710  
www.ti.com ............................................................................................................................................... SBAS221FDECEMBER 2001REVISED MARCH 2008  
60mA, 5.0V, Buck/Boost Charge Pump  
in ThinSOT-23 and ThinQFN  
1
FEATURES  
DESCRIPTION  
2
Wide Input Range: 1.8V to 5.5V  
Automatic Step-Up/Step-Down Operation  
Low Input Current Ripple  
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.  
Low Output Voltage Ripple  
Minimum Number of External  
Components—No Inductors  
1MHz Internal Oscillator Allows Small  
Capacitors  
The input voltage may vary above and below the  
output voltage and the output remains 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.  
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 REG71050 Only)  
TQFN-6 (2×2×0.8mm; REG71050 Only)  
CPUMP  
Evaluation Modules Available:  
REG710EVM-33, REG710EVM-5  
0.22mF  
Enable  
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  
REG71050  
REG710-5  
3.3V to  
R
R
R
4.2V  
CIN  
COUT  
2.2mF  
2.2mF  
GND  
LED  
LED  
LED  
REG710 Used in White LED Backlight Application  
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.  
2
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 the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2001–2008, Texas Instruments Incorporated  
REG710  
SBAS221FDECEMBER 2001REVISED MARCH 2008............................................................................................................................................... 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)  
SPECIFIED  
OUTPUT  
VOLTAGE PACKAGE-LEAD  
PACKAGE  
DESIGNATOR  
TEMPERATURE  
RANGE  
PACKAGE  
ORDERING  
NUMBER  
TRANSPORT  
MEDIA, QUANTITY  
PRODUCT  
MARKING(2)  
5.5V Output  
REG71055DDCT  
REG71055DDCR  
Tape and Reel, 250  
REG71055DDC  
5V Output  
5.5V  
TSOT23-6  
DDC  
–40°C to +85°C  
R10H  
Tape and Reel,  
3000  
REG710NA-5/250  
REG710NA5/3K  
REG71050DDCT  
REG71050DDCR  
REG71050DRVT  
REG71050DRVR  
Tape and Reel, 250  
REG710NA-5  
5.0V  
5.0V  
5.0V  
SOT23-6  
TSOT23-6  
TQFN-6  
DBV  
DDC  
DRV  
–40°C to +85°C  
–40°C to +85°C  
–40°C to +85°C  
R10B  
GAAI  
CFF  
Tape and Reel,  
3000  
Tape and Reel, 250  
REG71050DDC  
Tape and Reel,  
3000  
Tape and Reel, 250  
REG71050DRV  
3.3V Output  
REG710NA-3.3  
3V Output  
Tape and Reel,  
3000  
REG710NA-3.3/250  
REG710NA-3.3/3K  
Tape and Reel, 250  
3.3V  
3.0V  
2.7V  
2.5V  
SOT23-6  
SOT23-6  
SOT23-6  
SOT23-6  
DBV  
DBV  
DBV  
DBV  
–40°C to +85°C  
–40°C to +85°C  
–40°C to +85°C  
–40°C to +85°C  
R10C  
R10D  
R10F  
R10G  
Tape and Reel,  
3000  
REG710NA-3/250  
REG710NA-3/3K  
Tape and Reel, 250  
REG710NA-3  
2.7V Output  
REG710NA-2.7  
2.5V Output  
REG710NA-2.5  
Tape and Reel,  
3000  
REG710NA-2.7/250  
REG710NA-2.7/3K  
Tape and Reel, 250  
Tape and Reel,  
3000  
REG710NA-2.5/250  
REG710NA-2.5/3K  
Tape and Reel, 250  
Tape and Reel,  
3000  
(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) Voltage is marked on reel. Add on row with the following data: Product: REG71050DRV Output Voltage: 5.0V Package-Lead: TQFN  
Package Designator: DRV Specified Temp range: -40C to +85C Package marking: CFF Ordering Number: REG71050DRVT (Tape and  
Reel, 250) REG71050DRVR (Tape and Reel, 3000)  
ABSOLUTE MAXIMUM RATINGS(1)  
REG710  
–0.3 to +6.0  
–0.3 to VIN  
UNIT  
V
Supply voltage  
Enable input  
V
Output short-circuit duration  
Operating temperature range  
Storage temperature range  
Junction temperature  
Indefinite  
–55 to +125  
–65 to +150  
–55 to +150  
+240  
°C  
°C  
°C  
°C  
Lead temperature (soldering, 3s)  
(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.  
2
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Copyright © 2001–2008, Texas Instruments Incorporated  
Product Folder Link(s): REG710  
REG710  
www.ti.com ............................................................................................................................................... SBAS221FDECEMBER 2001REVISED MARCH 2008  
PIN CONFIGURATIONS  
TSOT23/SOT23  
(TOP VIEW)  
1
2
3
6
5
4
CPUMP+  
VIN  
VOUT  
GND  
CPUMP-  
Enable  
TQFN  
(TOP VIEW)  
1
6
5
4
CPUMP+  
VIN  
VOUT  
2
3
Enable  
GND  
CPUMP-  
SIMPLIFIED BLOCK DIAGRAM  
CPUMP  
0.22mF  
4
6
5
VIN  
REG710  
CIN  
2.2mF  
1
VOUT  
COUT  
2.2mF  
Control  
&
3
Enable  
Thermal  
2
GND  
Copyright © 2001–2008, Texas Instruments Incorporated  
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3
Product Folder Link(s): REG710  
REG710  
SBAS221FDECEMBER 2001REVISED MARCH 2008............................................................................................................................................... www.ti.com  
ELECTRICAL CHARACTERISTICS  
Boldface limits apply over the specified temperature range, TA = –40°C to +85°C.  
At TA = +25°C, VIN = VOUT/2 + 0.75V, IOUT = 10mA, CIN = COUT = 2.2µF, CPUMP = 0.22µF, and VENABLE = 1.3V, unless otherwise  
noted.  
REG710  
PARAMETER  
TEST CONDITIONS  
MIN  
TYP  
MAX  
UNIT  
INPUT VOLTAGE  
Tested Startup  
REG71055  
See conditions under Output Voltage with a  
resistive load no lower than typical  
3.0  
2.7  
1.8  
5.5  
5.5  
5.5  
V
V
V
REG710-5  
VOUT/IOUT  
.
All other models  
OUTPUT VOLTAGE  
REG71055  
IOUT 10mA, 3.0V VIN 5.5V  
5.2  
5.2  
5.5  
5.5  
5.0  
5.0  
5.0  
3.3  
3.3  
3.0  
3.0  
2.7  
2.7  
2.5  
2.5  
5.8  
5.8  
V
V
V
V
V
V
V
V
V
V
V
V
V
IOUT 30mA, 3.25V VIN 5.5V  
REG710-5, REG71050  
IOUT 10mA, 2.7V VIN 5.5V  
IOUT 30mA, 3.0V VIN 5.5V  
IOUT 60mA, 3.3V VIN 4.2V  
IOUT 10mA, 1.8V VIN 5.5V  
IOUT 30mA, 2.2V VIN 5.5V  
IOUT 10mA, 1.8V VIN 5.5V  
IOUT 30mA, 2.2V VIN 5.5V  
IOUT 10mA, 1.8V VIN 5.5V  
IOUT 30mA, 2.0V VIN 5.5V  
IOUT 10mA, 1.8V VIN 5.5V  
IOUT 30mA, 2.0V VIN 5.5V  
4.7  
5.3  
4.7  
5.3  
4.6  
5.4  
REG710-3.3  
REG710-3  
3.10  
3.10  
2.82  
2.82  
2.54  
2.54  
2.35  
2.35  
3.50  
3.50  
3.18  
3.18  
2.86  
2.86  
2.65  
2.65  
REG710-2.7  
REG710-2.5  
OUTPUT CURRENT  
Nominal  
Short-circuit(1)  
OSCILLATOR FREQUENCY(2)  
EFFICIENCY(3)  
RIPPLE VOLTAGE(4)  
ENABLE CONTROL  
Logic high input voltage  
Logic low input voltage  
Logic high input current  
Logic low input current  
THERMAL SHUTDOWN  
Shutdown temperature  
Shutdown recovery  
30  
mA  
mA  
100  
1.0  
90  
MHz  
%
IOUT = 10mA, VIN = 1.8V, REG710-3.3  
IOUT = 30mA  
35  
mVPP  
VIN = 1.8V to 5.5V  
1.3  
VIN  
0.4  
V
V
–0.2  
100  
100  
nA  
nA  
160  
140  
°C  
°C  
SUPPLY CURRENT  
(Quiescent current)  
IOUT = 0mA  
65  
100  
1
µA  
µA  
In shutdown mode  
VIN = 1.8V to 5.5V, Enable = 0V  
0.01  
TEMPERATURE RANGE  
Specified ambient temperature  
Operating ambient temperature  
Storage ambient temperature  
Thermal resistance  
TA  
TA  
–40  
–55  
–65  
+85  
+125  
+150  
°C  
°C  
TA  
°C  
θJA  
SOT23-6  
TSOT23-6  
TQFN-6  
200  
220  
75  
°C/W  
°C/W  
°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 VIN/VOUT configurations.  
(4) Effective series resistance (ESR) of capacitors is < 0.1.  
4
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Product Folder Link(s): REG710  
REG710  
www.ti.com ............................................................................................................................................... SBAS221FDECEMBER 2001REVISED MARCH 2008  
TYPICAL CHARACTERISTICS  
At TA = +25°C, VIN = VOUT/2 + 0.75V, IOUT = 5mA, CIN = COUT = 2.2µF, CPUMP = 0.22µF, and VENABLE = 1.3V, unless otherwise  
noted.  
EFFICIENCY vs LOAD CURRENT  
EFFICIENCY vs VIN  
(REG710-5V, REG71050)  
90  
80  
70  
60  
50  
40  
30  
90  
80  
70  
60  
50  
40  
30  
REG710-5, REG71050  
REG71055  
VIN = 2.7V  
VIN = 3V  
REG710-3.3  
REG710-3  
VIN = 3.3V  
VIN = 3.6V  
VIN = 4.2V  
VIN = VOUT  
REG710-2.5  
REG710-2.7  
0.1  
1
10  
Load Current (mA)  
100  
1.5  
2.0  
2.5  
3.5  
VIN (V)  
4.0  
4.5  
5.0  
5.5  
3.0  
Figure 1.  
Figure 2.  
EFFICIENCY vs LOAD CURRENT  
(REG710-3.3V)  
EFFICIENCY vs LOAD CURRENT  
(REG710-3V)  
90  
80  
70  
60  
50  
40  
30  
90  
80  
70  
60  
50  
40  
30  
VIN = 1.8V  
VIN = 1.8V  
VIN = 2.2V  
VIN = 2.2V  
VIN = VOUT  
VIN = VOUT  
0.1  
1
10  
Load Current (mA)  
Figure 3.  
100  
0.1  
1
10  
100  
Load Current (mA)  
Figure 4.  
EFFICIENCY vs LOAD CURRENT  
(REG710-2.7V)  
EFFICIENCY vs LOAD CURRENT  
(REG710-2.5V)  
80  
75  
70  
65  
60  
55  
50  
45  
40  
35  
30  
80  
75  
70  
65  
60  
55  
50  
45  
40  
35  
30  
VIN = 1.8V  
VIN = 1.8V  
VIN = 2.2V  
VIN = 2.2V  
VIN = VOUT  
VIN = VOUT  
0.1  
1
10  
Load Current (mA)  
Figure 5.  
100  
0.1  
1
10  
Load Current (mA)  
Figure 6.  
100  
Copyright © 2001–2008, Texas Instruments Incorporated  
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5
Product Folder Link(s): REG710  
REG710  
SBAS221FDECEMBER 2001REVISED MARCH 2008............................................................................................................................................... www.ti.com  
TYPICAL CHARACTERISTICS (continued)  
At TA = +25°C, VIN = VOUT/2 + 0.75V, IOUT = 5mA, CIN = COUT = 2.2µF, CPUMP = 0.22µF, and VENABLE = 1.3V, unless otherwise  
noted.  
SUPPLY CURRENT vs TEMPERATURE  
(No Load)  
LOAD TRANSIENT RESPONSE  
100  
80  
60  
40  
20  
0
20mV/div  
VOUT  
10mA/div  
ILOAD  
BW = 20MHz  
Time (10ms/div)  
-40 -30 -20 -10  
0
10 20 30 40 50 60 70 80 90  
Temperature (°C)  
Figure 7.  
Figure 8.  
SUPPLY CURRENT vs TEMPERATURE  
(Not Enabled)  
LINE TRANSIENT RESPONSE  
20  
18  
16  
14  
12  
10  
8
REG710-3.3V  
RL = 110W  
Buck Mode  
4.5V  
3.5V  
VIN  
Boost Mode  
2V/div  
6
50mV/div  
VOUT  
4
2
BW = 20MHz  
Time (50ms/div)  
0
-10  
-40 -30 -20  
0
10 20 30 40 50 60 70 80 90  
Temperature (°C)  
Figure 9.  
Figure 10.  
OUTPUT VOLTAGE vs TEMPERATURE  
OUTPUT VOLTAGE DRIFT HISTOGRAM  
0.2  
0.1  
25  
20  
15  
10  
5
0.0  
-0.1  
-0.2  
-0.3  
-0.4  
-0.5  
-0.6  
0
20  
-40 -20  
0
40  
60  
80  
100 120 140  
Junction Temperature (°C)  
VOUT Drift (ppm/°C)  
Figure 11.  
Figure 12.  
6
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Product Folder Link(s): REG710  
REG710  
www.ti.com ............................................................................................................................................... SBAS221FDECEMBER 2001REVISED MARCH 2008  
TYPICAL CHARACTERISTICS (continued)  
At TA = +25°C, VIN = VOUT/2 + 0.75V, IOUT = 5mA, CIN = COUT = 2.2µF, CPUMP = 0.22µF, and VENABLE = 1.3V, unless otherwise  
noted.  
OUTPUT RIPPLE VOLTAGE  
SHORT-CIRCUIT LOAD CURRENT vs VIN  
250  
225  
200  
175  
150  
125  
100  
75  
COUT = 2.2mF  
20mV/div  
COUT = 10mF, CPUMP = 1mF  
20mV/div  
REG710-3.3V  
VIN = 2.4V  
50  
25  
RL = 332W  
BW = 20MHz  
0
Time (5ms/div)  
1.5  
2.0  
2.5  
3.0  
3.5  
4.0  
4.5  
5.0  
5.5  
VIN (V)  
Figure 13.  
Figure 14.  
OUTPUT RIPPLE VOLTAGE vs VIN  
(REG710-2.7V, 3.3V)  
INPUT CURRENT AT TURN-ON  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
REG710-2.7  
COUT = 2.2mF  
100mA/div  
IIN  
REG710-3.3  
REG710-2.7  
VOUT  
COUT = 2.2mF  
COUT = 10mF  
2V/div  
REG710-3.3V  
VIN = 3.0V  
REG710-3.3  
BW = 20MHz  
IO = 30mA  
COUT = 10mF  
Time (50ms/div)  
4.5 5.0 5.5  
1.0 1.5 2.0 2.5 3.0 3.5 4.0  
VIN (V)  
6.0  
Figure 15.  
Figure 16.  
OUTPUT RIPPLE VOLTAGE vs VIN  
(REG710-2.5V, 3V, 5V)  
90  
REG710-3  
80  
70  
60  
50  
40  
30  
20  
10  
0
COUT = 2.2mF  
REG710-5  
REG71050  
REG710-2.5  
COUT = 2.2mF  
COUT = 2.2mF  
REG710-5  
REG71050  
COUT = 10mF  
REG710-3  
COUT = 10mF  
REG710-2.5, COUT = 10mF  
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0  
VIN (V)  
Figure 17.  
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REG710  
SBAS221FDECEMBER 2001REVISED MARCH 2008............................................................................................................................................... www.ti.com  
THEORY OF OPERATION  
During the second half cycle the FET switched are  
configured as shown in Figure 19B, and the voltage  
on CPUMP is added to VIN. The output voltage is  
regulated by skipping clock cycles as necessary.  
The REG710 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  
PEAK CURRENT REDUCTION  
variable frequency switch-mode regulator. This  
operation is shown in Figure 18. Transistors Q1 and  
Q3 are held off, Q4 is on, and Q2 is switched as  
needed to maintain a regulated output voltage.  
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 (CIN) supplies most of the charge required  
by input current peaks.  
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 19.  
A conversion clock of 50% duty cycle is generated.  
During the first half cycle the FET switches are  
configured as shown in Figure 19A, and CPUMP  
charges to VIN.  
VIN  
Q1  
Q2  
OFF  
SWITCHED  
CPUMP  
Q3  
Q4  
OFF  
ON  
CIN  
VOUT  
COUT  
Step-Down (Buck) Mode  
Figure 18. Simplified Schematic of the REG710 Operating in the Step-Down Mode  
VIN  
VIN  
Q2  
Q2  
Q1  
Q1  
OFF  
ON  
ON  
ON  
OFF  
CPUMP  
CPUMP  
Q3  
Q4  
Q3  
Q4  
OFF  
ON  
OFF  
CIN  
CIN  
VOUT  
VOUT  
COUT  
COUT  
Step-Up (Boost) Mode  
(A)  
(B)  
Figure 19. Simplified Schematic of the REG710 Operating in the Step-Up or Boost Mode  
8
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REG710  
www.ti.com ............................................................................................................................................... SBAS221FDECEMBER 2001REVISED MARCH 2008  
PROTECTION  
pump capacitors (CIN and CPUMP, 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 20 for  
component values.  
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°C, allowing the device to cool.  
CPUMP  
When  
the  
junction  
temperature  
cools  
to  
0.22mF  
approximately +140°C, 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.  
4
6
Enable  
3
5
1
VIN  
VOUT  
REG710  
COUT  
CIN  
2.2mF  
2.2mF  
SHUTDOWN MODE  
GND  
2
A control pin on the regulator can be used to place  
the device into an energy-saving shutdown mode. In  
this mode, the output is disconnected from the input  
as long as VIN is greater than or equal to minimum  
VIN and the input quiescent current is reduced to 1µA  
maximum.  
Figure 20. Typical Operating Circuit  
CAPACITOR SELECTION  
With light loads or higher input voltage, a smaller  
0.1µF pump capacitor (CPUMP) and smaller 1µF input  
and output capacitors (CIN and COUT, respectively)  
can be used. To minimize output voltage ripple,  
increase the output capacitor, COUT, to 10µF or  
larger.  
For minimum output voltage ripple, the output  
capacitor COUT 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  
The capacitors listed in Table 1 can be used with the  
REG710. This table is only a representative list of  
parts that are compatible.  
Table 1. Suggested Capacitors  
RATED  
DIELECTRIC  
MATERIAL  
PACKAGE  
SIZE  
WORKING  
VOLTAGE  
MANUFACTURER  
PART NUMBER  
C1206C255K8RAC  
C1206C224K8RAC  
ECJ2YBOJ225K  
ECJ2VBIC224K  
ECJ2VBIC104  
VALUE  
2.2µF  
TOLERANCE  
±10%  
X7R  
X7R  
X5R  
X7R  
X7R  
X7R  
X7R  
1206  
1206  
805  
10V  
10V  
6.3V  
16V  
16V  
16V  
25V  
Kemet  
0.22µF  
2.2µF  
±10%  
±10%  
Panasonic  
0.22µF  
0.1µF  
±10%  
805  
±10%  
805  
EMK316BJ225KL  
TKM316BJ224KF  
2.2µF  
±10%  
1206  
1206  
Taiyo Yuden  
0.22µF  
±10%  
Copyright © 2001–2008, Texas Instruments Incorporated  
Submit Documentation Feedback  
9
Product Folder Link(s): REG710  
 
 
REG710  
SBAS221FDECEMBER 2001REVISED MARCH 2008............................................................................................................................................... www.ti.com  
EFFICIENCY  
LAYOUT  
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.  
Large transient currents flow in the VIN, VOUT, 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.  
The approximate efficiency is given by:  
A suggested printed circuit board (PCB) routing is  
shown in Figure 21. The trace lengths from the input  
and output capacitors have been kept as short as  
possible.  
Efficiency (%) = VOUT/(2 ´ VIN) ´ 100  
(step-up operating mode)  
or  
VENABLE  
AREA: < 0.08 sq. inches  
VOUT  
VOUT  
´ 100  
VIN  
VIN  
(step-down operating mode)  
COUT  
Table 2 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.  
CIN  
CP  
GND  
Figure 21. Suggested PCB Design for Minimum  
Ripple  
Table 2. Operating Mode Change versus VIN  
OPERATING MODE  
PRODUCT  
REG710-2.5  
REG710-2.7  
REG710-3  
CHANGES AT VIN OF  
> 3.2V  
> 3.4V  
> 3.7V  
> 4.0V  
REG710-3.3  
REG710-5, REG71050,  
REG71055  
Step-up only  
10  
Submit Documentation Feedback  
Copyright © 2001–2008, Texas Instruments Incorporated  
Product Folder Link(s): REG710  
 
 
REG710  
www.ti.com ............................................................................................................................................... SBAS221FDECEMBER 2001REVISED MARCH 2008  
APPLICATION CIRCUITS  
0.22mF  
0.22mF  
CP1  
CP2  
3.3V  
3.0V  
5.0V  
1.8V  
VIN  
VOUT  
VIN  
VOUT  
REG710-3.3  
REG710-3  
REG71050  
REG710-5  
2.2mF  
2.2mF  
+
2.2mF  
VIN  
CIN  
COUT  
-
EN  
GND  
EN  
GND  
Figure 22. REG710 Circuit for Step-Up Operation from 1.8V to 5.0V with 10mA Output Current  
0.22mF  
CP1  
VIN  
VOUT  
VOUT  
REG710-3.3  
+
4.7mF  
4.7mF  
COUT  
VIN  
CIN  
GND  
-
0.22mF  
CP2  
VIN  
VOUT  
REG710-3.3  
GND  
Figure 23. REG710 Circuit for Doubling the Output Current  
CPUMP  
0.22mF  
Enable  
REG71050  
REG710-5  
3.3V to  
4.2V  
R
R
R
CIN  
COUT  
2.2mF  
2.2mF  
GND  
LED  
LED  
LED  
Figure 24. REG710 Circuit for Driving LEDs  
Copyright © 2001–2008, Texas Instruments Incorporated  
Submit Documentation Feedback  
11  
Product Folder Link(s): REG710  
REG710  
SBAS221FDECEMBER 2001REVISED MARCH 2008............................................................................................................................................... www.ti.com  
0.22mF  
C-  
VIN  
C+  
VOUT  
3.3V  
V
IN £ VOUT  
IL  
REG710-3.3  
2.2mF  
2.2mF  
EN  
GND  
RL  
2.2mF  
74HC04  
5818  
5818  
-2.7V at 1mA  
when IL = 10mA  
2.2mF  
Figure 25. REG710 with Negative Bias Supply  
12  
Submit Documentation Feedback  
Copyright © 2001–2008, Texas Instruments Incorporated  
Product Folder Link(s): REG710  
PACKAGE OPTION ADDENDUM  
www.ti.com  
8-Aug-2008  
PACKAGING INFORMATION  
Orderable Device  
REG71050DDCR  
Status (1)  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
Package Package  
Pins Package Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)  
Qty  
Type  
Drawing  
SOT  
DDC  
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
3000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
REG71050DDCRG4  
REG71050DDCT  
SOT  
SOT  
DDC  
DDC  
DDC  
DRV  
DRV  
DRV  
DRV  
DDC  
DDC  
DDC  
DDC  
DBV  
DBV  
DBV  
DBV  
DBV  
DBV  
DBV  
DBV  
DBV  
DBV  
DBV  
DBV  
DBV  
3000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
REG71050DDCTG4  
REG71050DRVR  
SOT  
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
SON  
3000 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
REG71050DRVRG4  
REG71050DRVT  
SON  
3000 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
SON  
250 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
REG71050DRVTG4  
REG71055DDCR  
SON  
250 Green (RoHS & CU NIPDAU Level-2-260C-1 YEAR  
no Sb/Br)  
SOT  
3000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
REG71055DDCRG4  
REG71055DDCT  
SOT  
3000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
SOT  
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
REG71055DDCTG4  
REG710NA-2.5/250  
REG710NA-2.5/250G4  
REG710NA-2.5/3K  
REG710NA-2.5/3KG4  
REG710NA-2.7/250  
REG710NA-2.7/250G4  
REG710NA-2.7/3K  
REG710NA-2.7/3KG4  
REG710NA-3.3/250  
REG710NA-3.3/250G4  
REG710NA-3.3/3K  
REG710NA-3.3/3KG4  
REG710NA-3/250  
SOT  
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
SOT-23  
SOT-23  
SOT-23  
SOT-23  
SOT-23  
SOT-23  
SOT-23  
SOT-23  
SOT-23  
SOT-23  
SOT-23  
SOT-23  
SOT-23  
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
3000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
3000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
3000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
3000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
Addendum-Page 1  
PACKAGE OPTION ADDENDUM  
www.ti.com  
8-Aug-2008  
Orderable Device  
REG710NA-3/250G4  
REG710NA-3/3K  
Status (1)  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
Package Package  
Pins Package Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)  
Qty  
Type  
Drawing  
SOT-23  
DBV  
6
6
6
6
6
6
6
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
SOT-23  
SOT-23  
SOT-23  
SOT-23  
SOT-23  
SOT-23  
DBV  
DBV  
DBV  
DBV  
DBV  
DBV  
3000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
REG710NA-3/3KG4  
REG710NA-5/250  
REG710NA-5/250G4  
REG710NA-5/3K  
3000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
250 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
3000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
REG710NA-5/3KG4  
3000 Green (RoHS & CU NIPDAU Level-1-260C-UNLIM  
no Sb/Br)  
(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/productcontent for 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.  
Addendum-Page 2  
PACKAGE MATERIALS INFORMATION  
www.ti.com  
9-Aug-2008  
TAPE AND REEL INFORMATION  
*All dimensions are nominal  
Device  
Package Package Pins  
Type Drawing  
SPQ  
Reel  
Reel  
A0 (mm)  
B0 (mm)  
K0 (mm)  
P1  
W
Pin1  
Diameter Width  
(mm) W1 (mm)  
(mm) (mm) Quadrant  
REG71050DDCR  
REG71050DDCR  
REG71050DDCT  
REG71050DDCT  
REG71050DRVR  
REG71050DRVT  
REG71055DDCR  
REG71055DDCR  
REG71055DDCT  
REG710NA-2.5/250  
REG710NA-2.5/3K  
REG710NA-2.7/250  
REG710NA-3.3/250  
REG710NA-3.3/3K  
REG710NA-3/250  
REG710NA-3/3K  
REG710NA-5/250  
REG710NA-5/250  
SOT  
SOT  
DDC  
DDC  
DDC  
DDC  
DRV  
DRV  
DDC  
DDC  
DDC  
DBV  
DBV  
DBV  
DBV  
DBV  
DBV  
DBV  
DBV  
DBV  
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
3000  
3000  
250  
179.0  
179.0  
179.0  
179.0  
330.0  
180.0  
179.0  
179.0  
179.0  
179.0  
179.0  
179.0  
179.0  
179.0  
179.0  
179.0  
179.0  
179.0  
8.4  
8.4  
8.4  
8.4  
12.4  
12.4  
8.4  
8.4  
8.4  
8.4  
8.4  
8.4  
8.4  
8.4  
8.4  
8.4  
8.4  
8.4  
3.2  
3.2  
3.2  
3.2  
2.2  
2.2  
3.2  
3.2  
3.2  
3.2  
3.2  
3.2  
3.2  
3.2  
3.2  
3.2  
3.2  
3.2  
3.2  
3.2  
3.2  
3.2  
2.2  
2.2  
3.2  
3.2  
3.2  
3.2  
3.2  
3.2  
3.2  
3.2  
3.2  
3.2  
3.2  
3.2  
1.4  
1.4  
1.4  
1.4  
1.1  
1.1  
1.4  
1.4  
1.4  
1.4  
1.4  
1.4  
1.4  
1.4  
1.4  
1.4  
1.4  
1.4  
4.0  
4.0  
4.0  
4.0  
8.0  
8.0  
4.0  
4.0  
4.0  
4.0  
4.0  
4.0  
4.0  
4.0  
4.0  
4.0  
4.0  
4.0  
8.0  
8.0  
8.0  
8.0  
12.0  
12.0  
8.0  
8.0  
8.0  
8.0  
8.0  
8.0  
8.0  
8.0  
8.0  
8.0  
8.0  
8.0  
Q3  
Q3  
Q3  
Q3  
Q2  
Q2  
Q3  
Q3  
Q3  
Q3  
Q3  
Q3  
Q3  
Q3  
Q3  
Q3  
Q3  
Q3  
SOT  
SOT  
250  
SON  
3000  
250  
SON  
SOT  
3000  
3000  
250  
SOT  
SOT  
SOT-23  
SOT-23  
SOT-23  
SOT-23  
SOT-23  
SOT-23  
SOT-23  
SOT-23  
SOT-23  
250  
3000  
250  
250  
3000  
250  
3000  
250  
250  
Pack Materials-Page 1  
PACKAGE MATERIALS INFORMATION  
www.ti.com  
9-Aug-2008  
Device  
Package Package Pins  
Type Drawing  
SPQ  
Reel  
Reel  
A0 (mm)  
B0 (mm)  
K0 (mm)  
P1  
W
Pin1  
Diameter Width  
(mm) W1 (mm)  
(mm) (mm) Quadrant  
REG710NA-5/3K  
REG710NA-5/3K  
SOT-23  
SOT-23  
DBV  
DBV  
6
6
3000  
3000  
179.0  
179.0  
8.4  
8.4  
3.2  
3.2  
3.2  
3.2  
1.4  
1.4  
4.0  
4.0  
8.0  
8.0  
Q3  
Q3  
*All dimensions are nominal  
Device  
Package Type Package Drawing Pins  
SPQ  
Length (mm) Width (mm) Height (mm)  
REG71050DDCR  
REG71050DDCR  
REG71050DDCT  
REG71050DDCT  
REG71050DRVR  
REG71050DRVT  
REG71055DDCR  
REG71055DDCR  
REG71055DDCT  
REG710NA-2.5/250  
REG710NA-2.5/3K  
REG710NA-2.7/250  
REG710NA-3.3/250  
REG710NA-3.3/3K  
REG710NA-3/250  
SOT  
SOT  
DDC  
DDC  
DDC  
DDC  
DRV  
DRV  
DDC  
DDC  
DDC  
DBV  
DBV  
DBV  
DBV  
DBV  
DBV  
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
3000  
3000  
250  
195.0  
195.0  
195.0  
195.0  
346.0  
190.5  
195.0  
195.0  
195.0  
195.0  
195.0  
195.0  
195.0  
195.0  
195.0  
200.0  
200.0  
200.0  
200.0  
346.0  
212.7  
200.0  
200.0  
200.0  
200.0  
200.0  
200.0  
200.0  
200.0  
200.0  
45.0  
45.0  
45.0  
45.0  
29.0  
31.8  
45.0  
45.0  
45.0  
45.0  
45.0  
45.0  
45.0  
45.0  
45.0  
SOT  
SOT  
250  
SON  
3000  
250  
SON  
SOT  
3000  
3000  
250  
SOT  
SOT  
SOT-23  
SOT-23  
SOT-23  
SOT-23  
SOT-23  
SOT-23  
250  
3000  
250  
250  
3000  
250  
Pack Materials-Page 2  
PACKAGE MATERIALS INFORMATION  
www.ti.com  
9-Aug-2008  
Device  
Package Type Package Drawing Pins  
SPQ  
Length (mm) Width (mm) Height (mm)  
REG710NA-3/3K  
REG710NA-5/250  
REG710NA-5/250  
REG710NA-5/3K  
REG710NA-5/3K  
SOT-23  
SOT-23  
SOT-23  
SOT-23  
SOT-23  
DBV  
DBV  
DBV  
DBV  
DBV  
6
6
6
6
6
3000  
250  
195.0  
195.0  
195.0  
195.0  
195.0  
200.0  
200.0  
200.0  
200.0  
200.0  
45.0  
45.0  
45.0  
45.0  
45.0  
250  
3000  
3000  
Pack Materials-Page 3  
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