a
High Accuracy anyCAP™*
100 mA Low Dropout Linear Regulator
ADP3301
FUNCTIONAL BLOCK DIAGRAM
ADP3301
OUT
CC
R1
IN
THERMAL
PROTECTION
Q2
SD
BANDGAP
REF
GND
DRIVER
Q1
FEATURES
High Accuracy (Over Line and Load Regulations
at +25 C): 0.8%
Ultralow Dropout Voltage: 100 mV Typical @ 100 mA
Requires Only C
O
= 0.47 F for Stability
anyCAP™* = Stable with All Types of Capacitors
Current and Thermal Limiting
Low Noise
Dropout Detector
Low Shutdown Current: 1 A
Several Fixed Voltage Options
3.0 V to 12 V Supply Range
–20 C to +85 C Ambient Temperature Range
Thermally Enhanced SO-8 Package
Excellent Line and Load Regulations
APPLICATIONS
Cellular Telephones
Notebook, Palmtop Computers
Battery Powered Systems
Portable Instruments
Post Regulator for Switching Supplies
Bar Code Scanners
GENERAL DESCRIPTION
ERR
Gm
R2
The ADP3301 is a member of the ADP330x family of precision
low dropout anyCAP™* voltage regulators. The ADP3301
stands out from the conventional LDOs with a novel architec-
ture, an enhanced process and a new package. Its patented
design includes a noninverting wideband driver and a stage that
permits the use of an internal “pole splitting” capacitor to
stabilize the feedback loop with a single output capacitor as
small as 0.47
µF.
This device is stable with any type of capacitor
regardless of its ESR (Equivalent Serial Resistance) value,
including ceramic types (MLCC) for space restricted applica-
tions. The ADP3301 achieves exceptional accuracy of
±
0.8% at
room temperature and
±
1.4% overall accuracy over tempera-
ture, line and load regulations. The dropout voltage of the
ADP3301 is only 100 mV (typical) at 100 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 heat sink
or large copper surface on the PC board. This keeps PC board
real estate to a minimum and makes the ADP3301 very
attractive for use in portable equipment.
*anyCAP is a trademark of Analog Devices Inc.
The ADP3301 operates with a wide input voltage range from
3 V to 12 V and delivers a load current in excess of 100 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 from 50 mA to
200
mA:
ADP3300 (50 mA, SOT-23)
ADP3303 (200 mA)
NR
3
ADP3301-5.0
V
IN
C1
0.47µF
ERR
6
5
4
7
8
IN
1
OUT
2
V
OUT
= +5V
R1
330kΩ
E
OUT
C2
0.47µF
ON
OFF
GND
Figure 1. Typical Application Circuit
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
© Analog Devices, Inc., 1997–2014
Fax:
781.461.3113
ADP3301* PRODUCT PAGE QUICK LINKS
Last Content Update: 02/23/2017
COMPARABLE PARTS
View a parametric search of comparable parts.
REFERENCE DESIGNS
•
CN0185
•
CN0216
EVALUATION KITS
•
Arduino Compatible High Gain Weigh Scale Design
(CN0216)
DESIGN RESOURCES
•
ADP3301 Material Declaration
•
PCN-PDN Information
•
Quality And Reliability
•
Symbols and Footprints
DOCUMENTATION
Application Notes
•
AN-1072: How to Successfully Apply Low Dropout
Regulators
•
AN-262: Low-Noise Low Drop-Out Regulator for Portable
Equipment
Data Sheet
• ADP3301: High Accuracy anyCAP™* (*anyCAP is a
trademark of Analog Devices Inc.) 100 mA Low Dropout
Linear Regulator Data Sheet
DISCUSSIONS
View all ADP3301 EngineerZone Discussions.
SAMPLE AND BUY
Visit the product page to see pricing options.
TECHNICAL SUPPORT
TOOLS AND SIMULATIONS
•
ADI Linear Regulator Design Tool and Parametric Search
• ADIsimPower™ Voltage Regulator Design Tool
Submit a technical question or find your regional support
number.
DOCUMENT FEEDBACK
Submit feedback for this data sheet.
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ADP3301–xx–SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
(@ T = –20 C to +85 C, V
A
IN
= 7 V, C
IN
= 0.47 F, C
OUT
= 0.47 F, unless otherwise noted)
1
Min
Typ
Max
Units
Parameter
OUTPUT VOLTAGE
ACCURACY
Symbol
V
OUT
Conditions
V
IN
= Nom V
OUT
+0.3 V to 12 V
I
L
= 0.1 mA to 100 mA
T
A
= +25°C
V
IN
= Nom V
OUT
+0.3 V to 12 V
I
L
= 0.1 mA to 100 mA
V
IN
= Nom V
OUT
+0.3 V to 12 V
T
A
= +25°C
I
L
= 0.1 mA to 100 mA
T
A
= +25°C
I
L
= 100 mA
I
L
= 0.1 mA
V
IN
= 2.5 V
I
L
= 0.1 mA
V
OUT
= 98% of V
O
Nominal
I
L
= 100 mA
I
L
= 10 mA
I
L
= 1 mA
ON
OFF
0 < V
SD
< 5 V
5
≤
V
SD
≤
12 V @ V
IN
= 12 V
V
SD
= 0, V
IN
= 12 V
T
A
= +25°C
V
SD
= 0, V
IN
= 12 V
T
A
= +85°C
T
A
= +25°C @ V
IN
= 12 V
T
A
= +85°C @ V
IN
= 12 V
V
EO
= 5 V
I
SINK
= 400
µA
V
IN
= Nom V
OUT
+ 1 V
V
IN
= 12 V, I
L
= 100 mA
T = 10 ms
f = 10 Hz–100 kHz
C
NR
= 0
C
NR
= 10 nF, C
L
= 10
µF
–0.8
–1.4
0.024
0.014
0.85
0.18
0.6
0.1
0.02
0.003
2.0
0.9
0.9
+0.8
+1.4
%
%
mV/V
mV/mA
LINE REGULATION
LOAD REGULATION
GROUND CURRENT
GROUND CURRENT
IN DROPOUT
DROPOUT VOLTAGE
∆V
O
∆V
IN
∆V
O
∆I
L
I
GND
I
GND
V
DROP
2
0.3
1.2
0.2
0.07
0.03
0.3
1
22
1
5
2
4
13
mA
mA
mA
V
V
V
V
V
µA
µA
µA
µA
µA
µA
µA
V
mA
%/W
µV
rms
µV
rms
SHUTDOWN THRESHOLD
SHUTDOWN PIN
INPUT CURRENT
GROUND CURRENT IN
SHUTDOWN MODE
V
THSD
I
SDIN
I
Q
OUTPUT CURRENT IN
SHUTDOWN MODE
ERROR PIN OUTPUT
LEAKAGE
ERROR PIN OUTPUT
“LOW” VOLTAGE
PEAK LOAD CURRENT
THERMAL REGULATION
OUTPUT NOISE
@ 5 V OUTPUT
I
OSD
I
EL
V
EOL
I
LDPK
∆V
O
V
O
V
NOISE
0.13
200
0.015
100
30
0.3
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.
–2–
REV. A
ADP3301
ABSOLUTE MAXIMUM RATINGS*
PIN FUNCTION DESCRIPTIONS
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 . . . –55°C to +125°C
Operating Junction Temperature Range . . . –55°C to +125°C
θ
JA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96°C/W
θ
JC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55°C/W
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; functional operation of the device at these or any other
conditions above those indicated in the operation section of this specification is not
implied. Exposure to absolute maximum rating conditions for extended periods
may affect device reliability.
Pin
1&2
Mnemonic
OUT
Function
Output of the Regulator, fixed 2.7, 3.0,
3.2, 3.3 or 5 volts output voltage. By-
pass to ground with a 0.47
µF
or larger
capacitor.
Pins 1 and 2 must be con-
nected together for proper operation.
Noise Reduction Pin. Used for further
reduction of the output noise. (See text
for details.) No connection if not used.
Ground Pin.
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.
Open Collector Output which goes low
to indicate that the output is about to
go out of regulation.
Regulator Input.
Pins 7 and 8 must
be connected together for proper
operation.
3
NR
4
5
GND
SD
6
ERR
7&8
IN
PIN CONFIGURATION
OUT 1
8 IN
Other Members of anyCAP™* Family
1
OUT 2
ADP3301
7 IN
Model
ADP3300
Output
Current
50 mA
Package
Option
2
SOT-23
TOP VIEW
6 ERR
NR 3
(Not to Scale)
5
SD
GND 4
PIN FOR 5V DEVICE
Comments
High Accuracy
ADP3303
200 mA
SO-8
High Accuracy
NOTES
1
See individual data sheets for detailed ordering information.
2
SO = Small Outline, SOT = Surface Mount
.
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 ADP3301 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.
WARNING!
ESD SENSITIVE DEVICE
REV. A
–3–
ADP3301–Typical Performance Characteristics
5.0003
5.0000
OUTPUT VOLTAGE – Volts
I
L
= 0mA
I
L
= 10mA
OUTPUT VOLTAGE – Volts
5.00075
5.00000
4.99925
4.99850
4.99775
4.99700
4.99625
4.99550
0
20
40
60 80 100 120 140 160 180 200
OUTPUT LOAD – mA
V
OUT
= 5V
V
IN
= 7V
GROUND CURRENT – mA
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
1.2 2.4 3.6 4.8 6 7.2 8.4 9.6 10.8 12
INPUT VOLTAGE – Volts
V
OUT
= 5V
I
L
= 0
4.9997
4.9994
4.9991
4.9988
4.9985
V
OUT
= 5V
4.9982
4.9979
5.2 6
I
L
= 100mA
I
L
= 50mA
7
8 9 10 11 12 13 14 15 16
INPUT VOLTAGE – Volts
Figure 2. Line Regulation: Output
Voltage vs. Input Voltage
Figure 3. Output Voltage vs. Load
Current Up to 200 mA
Figure 4. Quiescent Current vs. Sup-
ply Voltage
970
870
0.2
1400
1200
0.1
GROUND CURRENT – µA
770
670
570
470
370
270
170
0
10 20
30 40 50 60 70 80 90 100
OUTPUT LOAD – mA
I
L
= 0 TO 100mA
GROUND CURRENT – µA
OUTPUT VOLTAGE – %
1000
I
L
= 100mA
800
600
400
200
0
–45 –25 –15
I
L
= 0
0.0
I
L
= 0
–0.1
–0.2
–0.3
–0.4
–45 –25 –5
15 35 55 75 95 115 135
TEMPERATURE –
°
C
5
25 45 65 85 105 125
TEMPERATURE –
°
C
Figure 5. Quiescent Current vs. Load
Current
Figure 6. Output Voltage Variation %
vs. Temperature
Figure 7. Quiescent Current vs.
Temperature
200
5
INPUT-OUTPUT VOLTAGE – Volts
INPUT-OUTPUT VOLTAGE – Volts
V
OUT
= 3.3V
8.0
V
IN
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0
0
1
2
3
4
3
2
INPUT VOLTAGE – Volts
1
0
INPUT-OUTPUT VOLTAGE – mV
160
4
120
3
V
OUT
SD
= V
IN
OR 3V
R
L
= 33Ω
÷
3.3kΩ
C
L
= 0.47µF
V
OUT
= 3.3V
0
20
40 60
80 100 120 140 160 180 200
TIME – µs
80
2
R
L
= 33Ω
1
40
0
0
20 40
60 80 100 120 140 160 180 200
OUTPUT LOAD – mA
0
Figure 8. Dropout Voltage vs. Output
Current
Figure 9. Power-Up/Power-Down
Figure 10. Power-Up Overshoot
–4–
REV. A
嵌入式系统
