ADP3303(2017) View Datasheet(PDF) - Analog Devices
Part Name
Description
Manufacturer
ADP3303 Datasheet PDF : 16 Pages
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Data Sheet
High Accuracy anyCAP™
200 mA Low Dropout Linear Regulator
ADP3303
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 CO = 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
IN
ERR
Q2
SD
Q1
THERMAL
PROTECTION
DRIVER
ADP3303
CC
gm
BANDGAP
REF
GND
Figure 1. Functional Block Diagram
OUT
R1
R2
VIN
C1
0.47µF
NR 3
ADP3303-5.0
7 IN
8
1
OUT
2
SD
5
ON
OFF
ERR 6
GND
4
330kΩ
EOUT
VOUT = +5V
C2
0.47µF
SD
Figure 2. Typical Application Circuit
GENERAL DESCRIPTION
The ADP3303 is a member of the ADP3300, ADP3301, and
ADP3309 family of precision low dropout anyCAP1 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 ADP3300, ADP3301,
and ADP3309 anyCAP LDO family offers a wide range of
output voltages and output current levels:
Table 1. ADP3300, ADP3301, and ADP3309 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.
Rev. D
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