REG710
SBAS221E − DECEMBER 2001 − REVISED SEPTEMBER 2003
60mA Switched Cap
BUCK/BOOST CONVERTER
FEATURES
D
Wide Input Range: 1.8V to 5.5V
D
Automatic Step-Up/Step-Down Operation
D
Low Input Current Ripple
D
Low Output Voltage Ripple
D
Minimum Number of External
D
D
D
D
D
D
ComponentsNo 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 REG71050 Only)
Evaluation Modules Available:
REG710EVM-33, REG710EVM-5
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.
APPLICATIONS
D
Smart Card Readers
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
C
PUMP
0.22µF
Enable
3.3V to
4.2V
REG71050
REG710−
5
C
IN
2.2µF
GND
C
OUT
2.2µF
R
R
R
LED
LED
LED
REG710 Used in White LED Backlight Application
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 Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
Copyright
2001−2003, Texas Instruments Incorporated
www.ti.com
REG710
www.ti.com
SBAS221E − DECEMBER 2001 − REVISED SEPTEMBER 2003
ABSOLUTE MAXIMUM RATINGS
(1)
Supply Voltage
. . . . . . . . . . .
Enable Input
. . . . . . . . . . . .
Output Short-Circuit Duration
. .
Operating Temperature Range
.
Storage Temperature Range
. .
Junction Temperature
. . . . . . .
Lead Temperature (soldering, 3s)
. . . . . . . . . . . . . . . .
−0.3V to +6.0V
. . . . . . . . . . . . . . . . .
−0.3V to VIN
. . . . . . . . . . . . . . . . . . .
Indefinite
. . . . . . . . . . . . . .
−55°C to +125°C
. . . . . . . . . . . . . .
−65°C to +150°C
. . . . . . . . . . . . . .
−55°C to +150°C
. . . . . . . . . . . . . . . . . . .
+240°C
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.
NOTE: (1) Stresses above these ratings may cause permanent damage. Expo-
sure to absolute maximum conditions for extended periods may degrade device
reliability.
PACKAGE ORDERING INFORMATION
PRODUCT
5.5V Output
REG71055DDC
5V Output
REG710NA-5
5V Output
REG71050DDC
3.3V Output
REG710NA-3.3
3V Output
REG710NA-3
2.7V Output
REG710NA-2.7
2.5V Output
REG710NA-2.5
OUTPUT
VOLTAGE
5.5V
PACKAGE-LEAD
PACKAGE
DESIGNATOR(1)
DDC
SPECIFIED
TEMPERATURE
RANGE
−40°C to +85°C
PACKAGE
MARKING(2)
R10H
ORDERING
NUMBER
REG71055DDCT
TSOT23−6
REG71055DDCR
REG710NA-5/250
5.0V
5.0V
SOT23−6
TSOT23−6
DBV
DDC
−40°C to +85°C
−40°C to +85°C
R10B
GAAI
REG710NA−5/3K
REG71050DDCT
REG71050DDCR
REG710NA-3.3/250
3.3V
SOT23−6
DBV
−40°C to +85°C
R10C
REG710NA-3.3/3K
REG710NA-3/250
3.0V
SOT23−6
DBV
−40°C to +85°C
R10D
REG710NA-3/3K
REG710NA-2.7/250
2.7V
2.5V
SOT23−6
SOT23−6
DBV
DBV
−40°C to +85°C
−40°C to +85°C
R10F
R10G
REG710NA-2.7/3K
REG710NA-2.5/250
REG710NA-2.5/3K
TRANSPORT
MEDIA, QUANTITY
Tape and Reel, 250
Tape and Reel, 3000
Tape and Reel, 250
Tape and Reel, 3000
Tape and Reel, 250
Tape and Reel, 3000
Tape and Reel, 250
Tape and Reel, 3000
Tape and Reel, 250
Tape and Reel, 3000
Tape and Reel, 250
Tape and Reel, 3000
Tape and Reel, 250
Tape and Reel, 3000
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.
PIN CONFIGURATION
Top View
TSOT23/SOT23
SIMPLIFIED BLOCK DIAGRAM
C
PUMP
0.22µF
4
V
IN
5
C
IN
2.2µF
6
REG710
V
OUT
GND
Enable
1
2
3
6
5
4
C
PUMP+
V
IN
C
PUMP−
Control
1
V
OUT
C
OUT
2.2µF
&
Enable
3
Thermal
2 GND
2
REG710
www.ti.com
SBAS221E − DECEMBER 2001 − REVISED SEPTEMBER 2003
ELECTRICAL CHARACTERISTICS
Boldface
limits apply over the specified temperature range,
T
A
= −405C to +855C
At TA = +25°C, VIN = VOUT/2 + 0.75V, IOUT = 10mA, CIN = COUT = 2.2µF, CPUMP = 0.22µF, VENABLE = 1.3V, unless otherwise noted.
REG710NA
PARAMETER
INPUT VOLTAGE
Tested Startup
REG71055
REG710-5
All Other Models
OUTPUT VOLTAGE
REG71055
IOUT
≤
10mA, 3.0V
≤
VIN
≤
5.5V
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
REG710-3.3
IOUT
≤
10mA, 1.8V
≤
VIN
≤
5.5V
IOUT
≤
30mA, 2.2V
≤
VIN
≤
5.5V
REG710-3
IOUT
≤
10mA, 1.8V
≤
VIN
≤
5.5V
IOUT
≤
30mA, 2.2V
≤
VIN
≤
5.5V
REG710-2.7
IOUT
≤
10mA, 1.8V
≤
VIN
≤
5.5V
IOUT
≤
30mA, 2.0V
≤
VIN
≤
5.5V
REG710-2.5
IOUT
≤
10mA, 1.8V
≤
VIN
≤
5.5V
IOUT
≤
30mA, 2.0V
≤
VIN
≤
5.5V
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
SUPPLY CURRENT
(Quiescent Current)
In Shutdown Mode
TEMPERATURE RANGE
Specification Ambient Temperature
Operating Ambient Temperature
Storage Ambient Temperature
Thermal Resistance,
q
JA
TA
TA
TA
SOT23−6
TSOT23−6
−40
−55
−65
200
220
+85
+125
+150
°C
°C
°C
°C/W
°C/W
IOUT = 0mA
VIN = 1.8V to 5.5V, Enable = 0V
65
0.01
100
1
µA
µA
160
140
°C
°C
IOUT = 10mA, VIN = 1.8V, REG710−3.3
IOUT = 30mA
VIN = 1.8V to 5.5V
1.3
−0.2
VIN
0.4
100
100
V
V
nA
nA
30
100
1.0
90
35
mA
mA
MHz
%
mVp−p
5.2
5.2
4.7
4.7
4.6
3.10
3.10
2.82
2.82
2.54
2.54
2.35
2.35
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
5.3
5.3
5.4
3.50
3.50
3.18
3.18
2.86
2.86
2.65
2.65
V
V
V
V
V
V
V
V
V
V
V
V
V
See conditions under Output Voltage
with a resistive load not lower than typical VOUT/IOUT.
3.0
2.7
1.8
5.5
5.5
5.5
V
V
V
CONDITIONS
MIN
TYP
MAX
UNITS
(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 < 0.1Ω.
3
REG710
www.ti.com
SBAS221E − DECEMBER 2001 − REVISED SEPTEMBER 2003
TYPICAL CHARACTERISTICS
At TA = +25°C, VIN = VOUT/2 + 0.75V, IOUT = 5mA, CIN = COUT = 2.2µF, CPUMP = 0.22µF, VENABLE = 1.3V, unless otherwise noted.
EFFICIENCY vs LOAD CURRENT
(REG710−5V, REG71050)
90
V
IN
= 2.7V
80
REG710−3.3
Efficiency (%)
REG710−3
Efficiency (%)
70
60
50
40
30
1.5
2
2.5
3
3.5
V
IN
(V)
4
4.5
5
5.5
70
60
50
40
30
0.1
1
10
Load Current (mA)
100
V
IN
= 3V
V
IN
= 3.3V
V
IN
= 3.6V
V
IN
= 4.2V
V
IN
= V
OUT
EFFICIENCY vs V
IN
90
80
REG710−5, REG71050
REG71055
REG710−2.5
REG710−2.7
EFFICIENCY vs LOAD CURRENT
(REG710−
3.3V)
90
80
Efficiency (%)
70
60
50
V
IN
= V
OUT
40
30
0.1
1
10
Load Current (mA)
100
40
30
0.1
V
IN
= 1.8V
90
80
Efficiency (%)
70
60
50
EFFICIENCY vs LOAD CURRENT
(REG710−
3V)
V
IN
= 1.8V
V
IN
= 2.2V
V
IN
= 2.2V
V
IN
= V
OUT
1
10
Load Current (mA)
100
EFFICIENCY vs LOAD CURRENT
(REG710−
2.7V)
80
75
70
Efficiency (%)
65
60
55
50
45
40
35
30
0.1
1
10
Load Current (mA)
100
V
IN
= V
OUT
V
IN
= 1.8V
Efficiency (%)
80
75
70
65
60
55
50
45
40
35
30
0.1
EFFICIENCY vs LOAD CURRENT
(REG710−
2.5V)
V
IN
= 1.8V
V
IN
= 2.2V
V
IN
= V
OUT
V
IN
= 2.2V
1
10
Load Current (mA)
100
4
REG710
www.ti.com
SBAS221E − DECEMBER 2001 − REVISED SEPTEMBER 2003
TYPICAL CHARACTERISTICS (Cont.)
At TA = +25°C, VIN = VOUT/2 + 0.75V, IOUT = 5mA, CIN = COUT = 2.2µF, CPUMP = 0.22µF, VENABLE = 1.3V, unless otherwise noted.
SUPPLY CURRENT vs TEMPERATURE
(No Load)
100
LOAD TRANSIENT RESPONSE
80
Supply Current (µA)
20mV/div
60
V
OUT
40
10mA/div
I
LOAD
BW = 20MHz
0
−40 −30 −20 −10
0
10 20 30 40 50 60 70 80 90
Temperature (_C)
Time (10µs/div)
20
SUPPLY CURRENT vs TEMPERATURE
(Not Enabled)
20
18
16
Supply Current (nA)
14
12
10
8
6
4
2
0
−40 −30 −20 −10
0
10 20 30 40 50 60 70 80 90
Temperature (_C)
50mV/div
4.5V
3.5V
2V/div
LINE TRANSIENT RESPONSE
REG710−
3.3V
R
L
= 110Ω
Buck Mode
V
IN
Boost Mode
V
OUT
BW = 20MHz
Time (50µs/div)
OUTPUT VOLTAGE vs TEMPERATURE
0.2
Output Voltage Change (%)
0.1
0.0
−0.1
−0.2
−0.3
−0.4
−0.5
<
−140
<
−116
Percentage of Units (%)
20
25
OUTPUT VOLTAGE DRIFT HISTOGRAM
15
10
5
<
−92
<
−68
<
−44
<4
< 28
< 52
< 76
< 100
V
OUT
Drift (ppm/_C)
> 100
0
40
60
80
100
Junction Temperature (_C)
120
140
<
−20
−0.6
−40
−20
0
20
5
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