REV.
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a
ADP3300
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 www.analog.com
Fax: © Analog Devices, Inc.,
High Accuracy anyCAP
®
50 mA Low Dropout Linear Regulator
FUNCTIONAL BLOCK DIAGRAM
Q2
THERMAL
PROTECTION
Q1
CC
BANDGAP
REF
DRIVER
R1
R2
ADP3300
OUT
IN
RR
SD
GND
+
–
g
m
FEATURES
High Accuracy Over Line and Load: ⴞ0.8% @ 25ⴗC,
ⴞ1.4% Over Temperature
Ultralow Dropout Voltage: 80 mV Typical @ 50 mA
Requires Only C
O
= 0.47 F for Stability
anyCAP = Stable with All Types of Capacitors
(Including MLCC)
Current and Thermal Limiting
Low Noise
Dropout Detector
Low Shutdown Current: 1 A
3.0 V to 12 V Supply Range
–40ⴗC to +85ⴗC Ambient Temperature Range
Several Fixed Voltage Options
Ultrasmall SOT-23 6-Lead Package
Excellent Line and Load Regulation
APPLICATIONS
Cellular Telephones
Notebook, Palmtop Computers
Battery Powered Systems
PCMCIA Regulators
Bar Code Scanners
Camcorders, Cameras
GENERAL DESCRIPTION
The ADP3300 is a member of the ADP330x family of precision
low dropout anyCAP voltage regulators. The ADP3300 stands
out from 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
capacitor, regardless of its ESR (Equivalent Series Resistance)
value, including ceramic types (MLCC) for space restricted appli-
cations. The ADP3300 achieves exceptional accuracy of ±0.8%
at room temperature and ± 1.4% overall accuracy over tempera-
ture, line and load variations. The dropout voltage of the
ADP3300 is only 80 mV (typical) at 50 mA.
The ADP3300 operates with a wide input voltage range from
3.0 V to 12 V and delivers a load current in excess of 50 mA.
It features an error flag that signals when the device is about to
lose regulation or when the short circuit or thermal overload
anyCAP is a registered trademark of Analog Devices Inc.
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 200 mA:
ADP3301 (100 mA)
ADP3303 (200 mA)
ADP3300-5
NR
OUT
IN
ERR
R1
330k⍀
E
OUT
C2
0.47F
V
OUT
= +5V
ON
OFF
SD
GND
C1
0.47F
V
IN
+
+
Figure 1. Typical Application Circuit
