ADP3302 Ver la hoja de datos (PDF) - Analog Devices
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ADP3302 Datasheet PDF : 8 Pages
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High Precision anyCAP™
Dual Low Dropout Linear Regulator
ADP3302
FEATURES
FUNCTIONAL BLOCK DIAGRAM
High Accuracy: ؎0.8%
(1/2 IS SHOWN)
Ultralow Dropout Voltage: 120 mV @ 100 mA Typical
Requires only CO = 0.47 F for Stability
anyCAP™ = Stable with All Types of Capacitors
IN
ADP3302
Q1
OUT
Current and Thermal Limiting
Low Noise
ERR
THERMAL
PROTECTION
CC
R1
OBSOLETE Dropout Detector
Multiple Voltage Options
Thermally Enhanced SO-8 Package
APPLICATIONS
Cellular Telephones
Notebook and Palmtop Computers
Battery Powered Systems
Portable Instruments
High Efficiency Linear Regulators
GENERAL DESCRIPTION
The ADP3302 is a member of the ADP330X family of precision
micropower low dropout anyCAP™ regulators. The ADP3302
contains two fully independent 100 mA regulators with separate
shutdown and merged error outputs. It features 1.4% overall
Q2
SD
DRIVER
GM
R2
BANDGAP
REF
GND
VIN
0.47µF
EOUT
5 IN
2
ERR
OUT1 1
8 IN
ADP3302
330kΩ
VOUT1
0.47µF
output accuracy and very low, 120 mV typical, dropout voltage.
3 GND
OUT2 4
VOUT2
SD1
SD2
The ADP3302 has a wide input voltage range from ؉3 V to
7
6
0.47µF
؉12 V. It features an error flag that signals when either of the
two regulators is about to lose regulation. It has short circuit
ON
OFF
current protection as well as thermal shutdown.
The ADP3302’s enhanced lead frame design allows for a maxi-
mum power dissipation of 630 mW @ +70°C ambient temperature
and 1.0 W at room temperature without any external heat sink.
Figure 1. Application Circuit
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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