Analog Devices ADP3303 Datasheet
High Accuracy anyCAP™
Q2
THERMAL
PROTECTION
g
m
Q1
CC
BANDGAP
REF
DRIVER
R1
R2
ADP3303
OUT
IN
ERR
SD
GND
ADP3303-5.0
5
4
6
3
NR
OUT
IN
1
2
7
8
ERR
330kV
E
OUT
C2
0.47mF
V
OUT
= +5V
ON
OFF
SD
C1
0.47mF
V
IN
SD
GND
a
FEATURES
High Accuracy Over Line and Load ⴞ0.8% @ at +25ⴗC,
ⴞ1.4% Over Temperature
Ultralow Dropout Voltage: 180 mV (Typ) @ 200 mA
Requires Only C
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 A
Thermally Enhanced SO-8 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
= 0.47 F for Stability
O
200 mA Low Dropout Linear Regulator
ADP3303
FUNCTIONAL BLOCK DIAGRAM
GENERAL DESCRIPTION
The ADP3303 is a member of the ADP330x family of precision low dropout anyCAP voltage regulators. The ADP3303
stands out from the conventional LDOs with a novel architecture, an enhanced process and a new 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 new architecture and process, ADI’s new
proprietary thermally enhanced package (Thermal Coastline)
can handle 1 W of power dissipation without external heatsink
or large copper surface on the PC board. This keeps PC board
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.
anyCAP is a 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, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
Figure 1. Typical Application Circuit
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:
ADP3300 (50 mA, SOT-23)
ADP3301 (100 mA)
ADP3302 (100 mA, Dual Output)
ADP3307 (100 mA, SOT-23-6)
ADP3308 (50 mA, SOT-23-5)
ADP3309 (100 mA, SOT-23-5)
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703 © Analog Devices, Inc., 1998
ADP3303-xx–SPECIFICATIONS
(@ TA = –20ⴗC to +85ⴗC, VIN = 7 V, CIN = 0.47 F, C
otherwise noted)
1
= 0.47 F, unless
OUT
Parameter Symbol Conditions Min Typ Max Units
OUTPUT VOLTAGE V
OUT
ACCURACY I
VIN = V
T
V
OUTNOM
= 0.1 mA to 200 mA
L
= +25°C –0.8 +0.8 %
A
= V
IN
OUTNOM
+0.5 V to 12 V
+0.5 V to 12 V
IL = 0.1 mA to 200 mA –1.4 +1.4 %
LINE REGULATION ∆V
∆V
LOAD REGULATION ∆V
∆I
GROUND CURRENT I
GND
O
IN
O
L
V
= V
IN
T
OUTNOM
= +25°C 0.01 mV/V
A
+0.5 V to 12 V
IL = 0.1 mA to 200 mA
T
= +25°C 0.013 mV/mA
A
IL = 200 mA 1.5 4 mA
IL = 0.1 mA 0.25 0.4 mA
GROUND CURRENT I
GND
VIN = 2.5 V
IN DROPOUT IL = 0.1 mA 1.12 2.5 mA
V
DROPOUT VOLTAGE V
DROP
= 98% of V
OUT
OUTNOM
IL = 200 mA 0.18 0.4 V
I
= 10 mA 0.02 0.07 V
L
IL = 1 mA 0.003 0.03 V
SHUTDOWN THRESHOLD V
THSD
ON 2.0 V
OFF 0.3 V
SHUTDOWN PIN I
SDIN
INPUT CURRENT 5 ≤ V
GROUND CURRENT IN I
Q
SHUTDOWN MODE T
OUTPUT CURRENT IN I
OSD
SHUTDOWN MODE T
0 < V
< 5 V 1 µA
SD
≤ 12 V @ VIN = 12 V 22 µA
SD
VSD = 0, VIN = 12 V
= +25°C1µA
A
V
= 0, VIN = 12 V
SD
T
= +85°C5µA
A
T
= +25°C @ VIN = 12 V 2.5 µA
A
= +85°C @ VIN = 12 V 4 µA
A
ERROR PIN OUTPUT
LEAKAGE I
EL
V
= 5 V 13 µA
EO
ERROR PIN OUTPUT
“LOW” VOLTAGE V
PEAK LOAD CURRENT I
OUTPUT NOISE V
EOL
LDPK
NOISE
@ 5 V OUTPUT C
NOTES
1
Ambient temperature of +85°C corresponds to a typical junction temperature of +125 °C under typical full load test conditions.
Specifications subject to change without notice.
I
= 400 µA 0.15 0.3 V
SINK
VIN = V
OUTNOM
+ 1 V 300 mA
f = 10 Hz–100 kHz
= 0 100 µV
NR
CNR = 10 nF, C
= 10 µF30µV
L
rms
rms
–2–
REV. A
ADP3303
WARNING!
ESD SENSITIVE DEVICE
ABSOLUTE MAXIMUM RATINGS*
Input Supply Voltage . . . . . . . . . . . . . . . . . . . –0.3 V to +16 V
Shutdown Input Voltage . . . . . . . . . . . . . . . . –0.3 V to +16 V
Error Flag Output Voltage . . . . . . . . . . . . . . . –0.3 V to +16 V
Noise Bypass Pin Voltage . . . . . . . . . . . . . . . . –0.3 V to +5 V
Power Dissipation . . . . . . . . . . . . . . . . . . . Internally Limited
Operating Ambient Temperature Range . . . . –20°C to +85°C
Operating Junction Temperature Range . . . –20°C to +125°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96°C/W
θ
JA
θ
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55°C/W
JC
Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C
Lead Temperature Range (Soldering 10 sec) . . . . . . . +300°C
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . +215°C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . +220°C
*This is a stress rating only; operation beyond these limits can cause the device to
be permanently damaged.
ORDERING GUIDE
Output Package
Model Voltage Option*
ADP3303AR-2.7 2.7 V SO-8
ADP3303AR-3 3.0 V SO-8
ADP3303AR-3.2 3.2 V SO-8
ADP3303AR-3.3 3.3 V SO-8
ADP3303AR-5 5.0 V SO-8
Contact the factory for the availability of other output voltage options.
*SO = Small Outline.
Other Members of anyCAP Family
Output Package
Model Current Options
2
1
Comments
ADP3300 50 mA SOT-23-6 High Accuracy
ADP3301 100 mA SO-8 High Accuracy
ADP3302 100 mA SO-8 Dual Output
ADP3307 100 mA SOT-23-6 Small Size
ADP3308 50 mA SOT-23-5 Improved LP2980
ADP3309 100 mA SOT-23-5 Improved MIC5205
NOTES
1
See individual data sheets for detailed ordering information.
2
SO = Small Outline, SOT = Surface Mount.
PIN FUNCTION DESCRIPTIONS
Pin Mnemonic Function
1 & 2 OUT Output of the Regulator. Bypass to
ground with a 0.47 µF or larger
capacitor. Pins 1 and 2 must be con-
nected together for proper operation.
3 NR Noise Reduction Pin. Used for reduc-
tion of the output noise. (See text 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, this pin
should be connected 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. Pins 7 and 8 must
be connected together for proper
operation.
PIN CONFIGURATION
OUT
OUT
NR
GND
1
2
ADP3303
TOP VIEW
3
(Not to Scale)
4
8
IN
7
IN
6
ERR
SD
5
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the ADP3303 features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
REV. A
–3–
Loading...