ADP3306 Ver la hoja de datos (PDF) - Analog Devices
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ADP3306 Datasheet PDF : 3 Pages
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High Accuracy anyCAP™*
300 mA Low Dropout Linear Regulator
ADP3306
FEATURES
FUNCTIONAL BLOCK DIAGRAM
High Accuracy Over Line and Load Regulations
at 25؇C: ؎1%
Ultralow Dropout Voltage: 300 mV Typical @ 300 mA
Requires Only CO = 1 F for Stability
anyCAP™ = Stable with All Types of Capacitors
(Including MLCC)
IN
ERR
THERMAL
PROTECTION
ADP3306
Q1
OUT
CC
R1
Current and Thermal Limiting
Q2
DRIVER
Gm
Low Noise
Dropout Detector
Low Shutdown Current: 1 A
SD
R2
BANDGAP
REF
Several Fixed Voltage Options
3.2 V to 12 V Supply Range
Y –20؇C to +85؇C Ambient Temperature Range
Thermally Enhanced SO-8 and TSSOP-14 Packages
R Excellent Line and Load Regulations
INA APPLICATIONS
L Cellular Telephones
IM A Notebook, Palmtop Computers
L IC Battery Powered Systems
Portable Instruments
E N Post Regulator for Switching Supplies
R H Bar Code Scanners
P TEC ATA GENERAL DESCRIPTION
The ADP3306 is a member of the ADP330x family of precision
D low dropout anyCAP™ voltage regulators. The ADP3306
GND
VIN
C1
0.47F
NR 3
ADP3306-5.0
7
IN
8
1
OUT
2
R1
ERR 6
5
4
ON
OFF
SD
GND
330k⍀
EOUT
VOUT = +5V
C2
1F
stands out from the conventional LDOs with a novel architec-
ture, an enhanced process and a new package. Its patented
Figure 1. Typical Application Circuit
design requires only a 0.1 µF output capacitor for stability.
The ADP3306 operates with a wide input voltage range from
This device is stable with any capacitor, regardless of its ESR
3.2 V to 12 V and delivers a load current in excess of 300 mA. It
(Equivalent Series Resistance) value, including ceramic types
features an error flag that signals when the device is about to lose
(MLCC) for space restricted applications. The ADP3306
regulation or when the short circuit or thermal overload protec-
achieves exceptional accuracy of ±1.0% at room temperature and tion is activated. Other features include shutdown and optional
±1.5% overall accuracy over temperature, line and load regula-
noise reduction capabilities. The ADP330x anyCAP™ LDO fam-
tions. The dropout voltage of the ADP3306 is only 300 mV
ily offers a wide range of output voltages and output current
(typical) at 300 mA.
levels from 50 mA to 300 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 ADP3306 very attrac-
tive for use in portable equipment.
ADP3300 (50 mA, SOT-23)
ADP3307 (100 mA, SOT-23)
ADP3301 (100 mA)
ADP3302 (100 mA, Dual Output)
ADP3304 (100 mA, Dual Output with Separate Grounds)
ADP3303 (200 mA)
*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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700 World Wide Web Site: http://www.analog.com
Fax: 617/326-8703
© Analog Devices, Inc., 1997
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