High Accuracy anyCAP™
200 mA Low Dropout Linear Regulator
Data Sheet
FEATURES
High accuracy over line and load ±0.8% at +25°C, ±1.4%
over temperature
Ultralow dropout voltage: 180 mV (typical) at 200 mA
Requires only C
O
= 0.47 µF for stability
anyCAP = stable with all types of capacitors (including MLCC)
3.2 V to 12 V supply range
Current and thermal limiting
Low noise
Dropout detector
Low shutdown current: < 1 µA
Thermally enhanced SOIC_N package
Excellent Line and Load Regulation Performance
APPLICATIONS
Cellular telephones
Notebook, palmtop computers
Battery powered systems
Portable instruments
Post regulator for switching supplies
Bar code scanners
FUNCTIONAL BLOCK DIAGRAMS
Figure 1. Functional Block Diagram
Figure 2. Typical Application Circuit
GENERAL DESCRIPTION
The ADP3303 is a member of the ADP330x family of precision
low dropout anyCAP
1
voltage regulators. The ADP3303 stands
out from the conventional LDOs with a different architecture,
an enhanced process, and a different package. Its patented design
requires only a 0.47 µF output capacitor for stability. This device
is insensitive to capacitor Equivalent Series Resistance (ESR)
and is stable with any good quality capacitor, including ceramic
types (MLCC) for space restricted applications. The ADP3303
achieves exceptional accuracy of ±0.8% at room temperature
and ±1.4% overall accuracy over temperature, line, and load
regulations. The dropout voltage of the ADP3303 is only
180 mV (typical) at 200 mA.
In addition to the architecture and process, the Analog Devices,
Inc., proprietary thermally enhanced package (Thermal Coastline)
can handle 1 W of power dissipation without external heatsink
or large copper surface on the printed circuit board (PCB). This
keeps PCB real estate to a minimum and makes the ADP3303
very attractive for use in portable equipment.
The ADP3303 operates with a wide input voltage range from
3.2 V to 12 V and delivers a load current in excess of 200 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:
Table 1. ADP330x anyCAP LDO Family
Model Output Current Package Options
ADP3300 50 mA 6-Lead SOT-23
ADP3301 100 mA 8-Lead SOIC_N
ADP3309 100 mA 5-Lead SOT-23
1
anyCAP is a trademark of Analog Devices, Inc.
Q2
THERMAL
PROTECTION
g
m
Q1
CC
BANDGAP
REF
DRIVER
R1
R2
AD
P
330
3
OUT
IN
ERR
SD
GND
10335-001
ADP3303-5.0
5
4
6
3
NR
OUT
IN
1
2
7
8
ERR
330kΩ
E
OUT
C2
0.4
7µF
V
OUT
= +5V
ON
OFF
SD
C1
0.47µF
V
IN
SD
GND
10335-002
Rev. C Document Feedback
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