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Analog Devices Semiconductor Electronic Components Datasheet

ADP3303A Datasheet

High Accuracy anyCAP Adjustable 200 mA Low Dropout Linear Regulator

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ADP3303A pdf
a
High Accuracy anyCAP™ Adjustable
200 mA Low Dropout Linear Regulator
ADP3303A
FEATURES
High Accuracy Over Line and Load:
؎0.8% @ +25؇C, ؎1.4% Over Temperature
Ultralow Dropout Voltage: 150 mV Typical @ 200 mA
Requires Only CO = 1 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
3.2 V to 12 V Supply Range
Adjustable 2.2 V to 10 V Output Range
–20؇C to +85؇C Ambient Temperature Range
Thermally Enhanced TSSOP-14 Package
APPLICATIONS
Cellular Telephones
Notebook, Palmtop Computers
Battery Powered Systems
Portable Instruments
Post Regulator for Switching Supplies
Bar Code Scanners
FUNCTIONAL BLOCK DIAGRAM
IN
ERR
SD
Q2
Q1
THERMAL
PROTECTION
DRIVER
ADP3303A
CC
gm
BANDGAP
REF
OUT
FB
GND
VIN
C1
0.47F
ERR
ADP3303A
IN OUT
FB
SD GND
ON
OFF
R3
330k
R1
EOUT
VOUT = +5V
C2
1F
R2
SD
Figure 1. Typical Application Circuit
GENERAL DESCRIPTION
The ADP3303A is a member of the ADP330x family of preci-
sion low dropout anyCAP voltage regulators. The ADP3303A
stands out from conventional LDOs with a novel architecture,
an enhanced process and a new package. Its patented design
requires only a 1 µF output capacitor for stability. This device is
insensitive to output capacitor ESR (Equivalent Series Resis-
tance), and is stable with any good quality capacitor, including
ceramic types (MLCC) for space restricted applications. The
ADP3303A achieves exceptional accuracy of ± 0.8% at room
temperature and ± 1.4% overall accuracy over temperature, line
and load variations. The dropout voltage of the ADP3303A is
only 150 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 an external heat
sink or large copper surface on the PC board. This keeps PC
board real estate to a minimum and makes the ADP3303A very
attractive for use in portable equipment.
The ADP3303A operates over an input voltage range of 3.2 V
to 12 V and delivers a load current in excess of 200 mA. The
output voltage can be adjusted from 2.2 V to 10 V using an
external resistor divider. It also 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 fea-
tures include shutdown and optional noise reduction capabilities.
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.
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., 1999


Analog Devices Semiconductor Electronic Components Datasheet

ADP3303A Datasheet

High Accuracy anyCAP Adjustable 200 mA Low Dropout Linear Regulator

No Preview Available !

ADP3303A pdf
ADP3303A–SPECIFICATIONS (@ TA= –20؇C to +85؇C, VIN = 7 V, CIN = 0.47 F, COUT = 1 F, unless otherwise
noted)1
Parameter
Symbol
Conditions
Min Typ Max
Units
OUTPUT VOLTAGE2, 3, 4
ACCURACY
VOUT
LINE REGULATION
LOAD REGULATION
GROUND CURRENT5
GROUND CURRENT5
IN DROPOUT
DROPOUT VOLTAGE
VO
VIN
VO
IL
IGND
IGND
VDROP
SHUTDOWN THRESHOLD
VTHSD
VIN = Nom VOUT +0.5 V to +12 V
IL = 1.0 mA to 200 mA
TA = +25°C
VIN = Nom VOUT +0.5 V to +12 V
IL = 1.0 mA to 200 mA
VIN = Nom VOUT +0.5 V to +12 V
TA = +25°C
IL = 1.0 mA to 200 mA
TA = +25°C
IL = 200 mA
IL = 1.0 mA
VIN = 2.5 V, VOUT = 5.0 V
IL = 1.0 mA
VOUT 98% of VO Nominal
IL = 200 mA
IL = 10 mA
IL = 1 mA
ON
OFF
–0.8 +0.8
–1.4 +1.4
0.01
0.005
2.0
0.35
4
0.6
1.9 3.0
0.15 0.4
0.02 0.07
0.003 0.03
2.0 0.9
0.9 0.3
%
%
mV/V
mV/mA
mA
mA
mA
V
V
V
V
V
SHUTDOWN PIN
INPUT CURRENT
ISDIN
0 V < VSD 5 V
5 V VSD 12 V @ VIN = 12 V
1 µA
22 µA
GROUND CURRENT IN5
SHUTDOWN MODE
IQ
VSD = 0, VIN = 12 V
TA = +25°C
VSD = 0 V, VIN = 12 V
TA = +85°C
1 µA
5 µA
OUTPUT CURRENT IN
SHUTDOWN MODE
IOSD
TA = +25°C @ VIN = 12 V
TA = +85°C @ VIN = 12 V
2.5 µA
4 µA
ERROR PIN OUTPUT
LEAKAGE
IEL VEO = 5 V
13 µA
ERROR PIN OUTPUT
“LOW” VOLTAGE
VEOL
ISINK = 400 µA
0.15 0.3
V
PEAK LOAD CURRENT
ILDPK
VIN = Nom VOUT + 1 V
300 mA
OUTPUT NOISE
@ 5 V OUTPUT
VNOISE
f = 10 Hz–100 kHz
CNR = 0
CNR = 10 nF, CL = 10 µF
100 µV rms
30 µV rms
NOTES
1Ambient temperature of +85°C corresponds to a typical junction temperature of +125°C under typical full load test conditions. The formula for Nom VOUT is found
in the Output Voltage Selection section.
2Accuracy guaranteed using external trim pots.
3For 2.7 V output, the minimum VIN is 3.2 V.
4Guaranteed by design and characterization.
5Ground currents include the current through R1, R2.
Specifications subject to change without notice.
–2– REV. A


Part Number ADP3303A
Description High Accuracy anyCAP Adjustable 200 mA Low Dropout Linear Regulator
Maker Analog Devices
Total Page 8 Pages
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