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PDF ADP3303 Data sheet ( Hoja de datos )
| Número de pieza | ADP3303 | |
| Descripción | 200 mA Low Dropout Linear Regulator | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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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
SD
Q2
THERMAL
PROTECTION
Q1
DRIVER
ADP3303
CC
gm
BANDGAP
REF
OUT
R1
R2
GND
Figure 1. Functional Block Diagram
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 ADP330x 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 ADP330x anyCAP
LDO family offers a wide range of output voltages and output
current levels:
Table 1. ADP330x anyCAP LDO Family
Model
Output Current
ADP3300
50 mA
ADP3301
100 mA
ADP3309
100 mA
Package Options
6-Lead SOT-23
8-Lead SOIC_N
5-Lead SOT-23
1 anyCAP is a trademark of Analog Devices, Inc.
Rev. C
Document Feedback
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 that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
©2014 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
1 page  
Data Sheet
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
ADP3303
OUT 1
8 IN
OUT 2 ADP3303 7 IN
TOP VIEW
NR 3 (Not to Scale) 6 ERR
GND 4
5 SD
Figure 3. Pin Configuration
Table 5. Pin Function Descriptions
Pin No.
Mnemonic Description
1, 2 OUT Output of the Regulator. Bypass to ground with a 0.47 µF or larger capacitor. Pin 1 and Pin 2 must be connected
together for proper operation.
3 NR Noise Reduction Pin. Used for reduction of the output noise. See the Noise Reduction section for details. No
connection if not used.
4 GND Ground Pin.
5 SD Active Low Shutdown Pin. Connect to ground to disable the regulator output. When shutdown is not used,
connect this pin to the input pin.
6 ERR Open Collector Output. Goes low to indicate that the output is about to go out of regulation.
7, 8 IN
Regulator Input. Pin 7 and Pin 8 must be connected together for proper operation.
Table 6. Other Members of anyCAP Family1
Model
Output Current
ADP3300
50 mA
ADP3301
100 mA
ADP3309
100 mA
Package Options2
6-Lead SOT-23
8-Lead SOIC_N
5-Lead SOT-23
1 See individual data sheets for detailed ordering information.
2 SOIC_N = small outline, SOT = surface mount.
Comments
High accuracy
High accuracy
Improved MIC5205
Rev. C | Page 5 of 16
5 Page 
Data Sheet
1
COPPER
LEAD-FRAME
8
27
COPPER PADDLE
36
45
Figure 24. Thermal Coastline
ERROR FLAG DROPOUT DETECTOR
The ADP3303 maintains its output voltage over a wide range of
load, input voltage and temperature conditions. If, for example,
the output is about to lose regulation by reducing the supply
ADP3303
voltage below the combined regulated output and drop-out
voltages, the ERR flag is activated. The ERR output is an open
collector, which is driven low.
Once set, the hysteresis of the ERR flag keeps the output low
until a small margin of operating range is restored either by
raising the supply voltage or reducing the load.
SHUTDOWN MODE
Applying a TTL high signal to the shutdown (SD) pin, or tying
it to the input pin, turns the output on. Pulling SD down to 0.3 V
or below, or tying it to ground, turns the output off. In shutdown
mode, quiescent current is reduced to much less than 1 µA.
Rev. C | Page 11 of 16
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet ADP3303.PDF ] | |
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