®
High Accuracy anyCAP
a
100 mA Low Dropout Linear Regulator
ADP3307
FUNCTIONAL BLOCK DIAGRAM
FEATURES
High Accuracy Over Line and Load: ؎0.8% @ 25؇C,
؎1.4% Over Temperature
Ultralow Dropout Voltage: 120 mV Typical @ 100 mA
Requires only CO = 0.47 F for Stability
anyCAP = Stable with All Types of Output Capacitors
(Including MLCC)
Current and Thermal Limiting
Low Noise
Dropout Detector
ADP3307
Q1
IN
OUT
NR
R1
R2
THERMAL
PROTECTION
CC
ERR
gm
Q2
DRIVER
SD
BANDGAP
REF
Low Shutdown Current: 1 A
3.0 V to 12 V Supply Range
–20؇C to +85؇C Ambient Temperature Range
Several Fixed Voltage Options
Ultrasmall SOT-23-6 (RT-6) Package
Excellent Line and Load Regulation
GND
NR
OUT
ERR
ADP3307-3.3
APPLICATIONS
V
V
= +3.3V
IN
IN
OUT
R1
+
–
Cellular Telephones
Notebook, Palmtop Computers
Battery Powered Systems
PCMCIA Regulator
Bar Code Scanners
Camcorders, Cameras
C1
0.47F
C2
0.47F
330k⍀
E
OUT
ON
OFF
SD
GND
Figure 1. Typical Application Circuit
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:
GENERAL DESCRIPTION
The ADP3307 is a member of the ADP330x family of precision
low dropout anyCAP voltage regulators. The ADP3307 stands
out from the conventional LDOs with a novel architecture and
an enhanced process. Its patented design requires only a 0.47 µF
output capacitor for stability. This device is stable with any type
of capacitor regardless of its ESR (Equivalent Series Resistance)
value, including ceramic types (MLCC) for space restricted
applications. The ADP3307 achieves exceptional accuracy of
0.8% at room temperature and 1.4% overall accuracy over
temperature, line and load variations. The dropout voltage of
the ADP3307 is only 120 mV (typical) at 100 mA.
ADP3300 (50 mA, SOT-23-6)
ADP3307 (100 mA, SOT-23-6)
ADP3301 (100 mA, R-8)
ADP3302 (100 mA, Dual Output)
ADP3303 (200 mA)
The ADP3307 operates with a wide input voltage range from
3.0 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
anyCAP is a registered trademark of Analog Devices, Inc.
REV. A
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat
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: 781/329-4700
Fax: 781/326-8703
www.analog.com
© Analog Devices, Inc., 2001