ADP3301 Analog Devices, ADP3301 Datasheet

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ADP3301

Manufacturer Part Number
ADP3301
Description
Manufacturer
Analog Devices
Datasheet

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a
GENERAL DESCRIPTION
The ADP3301 is a member of the ADP330x family of precision
low dropout anyCAP™* voltage regulators. The ADP3301
stands out from the conventional LDOs with a novel architec-
ture, an enhanced process and a new package. Its patented
design includes a noninverting wideband driver and a stage that
permits the use of an internal “pole splitting” capacitor to
stabilize the feedback loop with a single output capacitor as
small as 0.47 F. This device is stable with any type of capacitor
regardless of its ESR (Equivalent Serial Resistance) value,
including ceramic types (MLCC) for space restricted applica-
tions. The ADP3301 achieves exceptional accuracy of 0.8% at
room temperature and 1.4% overall accuracy over tempera-
ture, line and load regulations. The dropout voltage of the
ADP3301 is only 100 mV (typical) at 100 mA.
In addition to the new architecture and process, ADI’s new
proprietary thermally enhanced package (Thermal Coastline)
can handle 1 W of power dissipation without external heat sink
or large copper surface on the PC board. This keeps PC board
real estate to a minimum and makes the ADP3301 very
attractive for use in portable equipment.
*anyCAP is a trademark of Analog Devices Inc.
REV. 0
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
FEATURES
High Accuracy (Over Line and Load Regulations
Ultralow Dropout Voltage: 100 mV Typical @ 100 mA
Requires Only C
anyCAP™* = Stable with All Types of Capacitors
Current and Thermal Limiting
Low Noise
Dropout Detector
Low Shutdown Current: 1 A
Several Fixed Voltage Options
3.0 V to 12 V Supply Range
–20 C to +85 C Ambient Temperature Range
Thermally Enhanced SO-8 Package
Excellent Line and Load Regulations
APPLICATIONS
Cellular Telephones
Notebook, Palmtop Computers
Battery Powered Systems
Portable Instruments
Post Regulator for Switching Supplies
Bar Code Scanners
at +25 C):
0.8%
O
= 0.47 F for Stability
100 mA Low Dropout Linear Regulator
The ADP3301 operates with a wide input voltage range from
3 V to 12 V and delivers a load current in excess of 100 mA. It
features an error flag that signals when the device is about to
lose regulation or when the short circuit or thermal overload
protection is activated. Other features include shutdown and
optional noise reduction capabilities. The ADP330x anyCAP™*
LDO family offers a wide range of output voltages and output
current levels from 50 mA to 300 mA:
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
ADP3300 (50 mA, SOT-23)
ADP3302 (100 mA, Dual Output)
ADP3304 (100 mA, Dual Output with Separate Grounds)
ADP3303 (200 mA)
ADP3306 (300 mA)
V
ERR
IN
0.47µF
SD
IN
C1
Q2
High Accuracy anyCAP™*
Figure 1. Typical Application Circuit
FUNCTIONAL BLOCK DIAGRAM
7
8
PROTECTION
IN
THERMAL
ADP3301-5.0
5
OFF
World Wide Web Site: http://www.analog.com
ON
OUT
ERR
GND
NR
4
DRIVER
GND
3
1
2
6
Q1
R1
330k
© Analog Devices, Inc., 1997
BANDGAP
CC
E
ADP3301
Gm
OUT
ADP3301
REF
C2
0.47µF
R1
R2
V
OUT
OUT
= +5V

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ADP3301 Summary of contents

Page 1

... Post Regulator for Switching Supplies Bar Code Scanners GENERAL DESCRIPTION The ADP3301 is a member of the ADP330x family of precision low dropout anyCAP™* voltage regulators. The ADP3301 stands out from the conventional LDOs with a novel architec- ture, an enhanced process and a new package. Its patented design includes a noninverting wideband driver and a stage that permits the use of an internal “ ...

Page 2

... ADP3301–xx–SPECIFICATIONS ELECTRICAL CHARACTERISTICS Parameter Symbol OUTPUT VOLTAGE V ACCURACY LINE REGULATION V V LOAD REGULATION V I GROUND CURRENT I GND GROUND CURRENT I GND IN DROPOUT DROPOUT VOLTAGE V SHUTDOWN THRESHOLD V SHUTDOWN PIN I SDIN INPUT CURRENT GROUND CURRENT SHUTDOWN MODE OUTPUT CURRENT IN I OSD ...

Page 3

... ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the ADP3301 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality ...

Page 4

... ADP3301 –Typical Performance Characteristics 5.0003 I = 0mA L 5.0000 I = 10mA L 4.9997 I = 50mA L 4.9994 4.9991 I = 100mA L 4.9988 4.9985 OUT 4.9982 4.9979 5 INPUT VOLTAGE – Volts Figure 2. Line Regulation: Output Voltage vs. Input Voltage 970 870 770 670 570 470 ...

Page 5

... FREQUENCY – Hz Figure 18. Power Supply Ripple Rejection –5– ADP3301 OUT 0. 0.47µF L 5.01 5.00 4.99 I(V ) OUT 100 1 0 200 400 600 800 1000 TIME – µs Figure 13. Load Transient for 1 mA ...

Page 6

... Capacitor Selection Output Capacitors: as with any micropower device, output transient response is a function of the output capacitance. The ADP3301 is stable with a wide range of capacitor values, types and ESR (anyCAP™*). A capacitor as low as 0. all that is needed for stability. However, larger capacitors can be used if high output current surges are anticipated ...

Page 7

... APPLICATION CIRCUITS Crossover Switch The circuit in Figure 21 shows that two ADP3301s can be used to form a mixed supply voltage system. The output switches between two different levels selected by an external digital input. Output voltages can be any combination of voltages from the Ordering Guide ...

Page 8

... ADP3301 OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 8-Pin Small Outline Package (SO-8) 0.1968 (5.00) 0.1890 (4.80 0.1574 (4.00) 0.2440 (6.20 0.1497 (3.80) 0.2284 (5.80) PIN 1 0.0688 (1.75) 0.0196 (0.50) 0.0098 (0.25) 0.0532 (1.35) 0.0099 (0.25) 0.0040 (0.10) 8 0.0500 0.0192 (0.49) 0 SEATING 0.0098 (0.25) 0.0500 (1.27) (1.27) 0.0138 (0.35) PLANE BSC 0.0075 (0.19) 0.0160 (0.41) –8– REV. 0 ...

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