a
High Accuracy anyCAP
®
50 mA Low Dropout Linear Regulator
ADP3300
FUNCTIONAL BLOCK DIAGRAM
ADP3300
OUT
CC
DRIVER
g
m
+
BANDGAP
REF –
GND
R2
R1
IN
THERMAL
PROTECTION
Q2
SD
Q1
FEATURES
High Accuracy Over Line and Load: 0.8% @ 25 C,
1.4% Over Temperature
Ultralow Dropout Voltage: 80 mV Typical @ 50 mA
Requires Only C
O
= 0.47 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
3.0 V to 12 V Supply Range
–40 C to +85 C Ambient Temperature Range
Several Fixed Voltage Options
Ultrasmall SOT-23 6-Lead Package
Excellent Line and Load Regulation
APPLICATIONS
Cellular Telephones
Notebook, Palmtop Computers
Battery Powered Systems
PCMCIA Regulators
Bar Code Scanners
Camcorders, Cameras
GENERAL DESCRIPTION
ERR
NR
ADP3300-5
V
IN
C1
0.47 F
+
IN
OUT
R1
330k
E
OUT
+
V
OUT
= +5V
C2
0.47 F
The ADP3300 is a member of the ADP330x family of precision
low dropout anyCAP voltage regulators. The ADP3300 stands
out from conventional LDOs with a novel architecture and an
enhanced process. Its patented design requires only a 0.47
µF
output capacitor for stability. This device is stable with any
capacitor, regardless of its ESR (Equivalent Series Resistance)
value, including ceramic types (MLCC) for space restricted appli-
cations. The ADP3300 achieves exceptional accuracy of
±
0.8%
at room temperature and
±
1.4% overall accuracy over tempera-
ture, line and load variations. The dropout voltage of the
ADP3300 is only 80 mV (typical) at 50 mA.
The ADP3300 operates with a wide input voltage range from
3.0 V to 12 V and delivers a load current in excess of 50 mA.
It features an error flag that signals when the device is about to
lose regulation or when the short circuit or thermal overload
ERR
ON
OFF
SD
GND
Figure 1. Typical Application Circuit
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:
ADP3301 (100 mA)
ADP3302 (100 mA, Dual Output)
ADP3303 (200 mA)
anyCAP is a registered trademark of Analog Devices Inc.
REV. B
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. 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
www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2001
ADP3300–SPECIFICATIONS
Parameter
OUTPUT VOLTAGE
ACCURACY
Symbol
V
OUT
(@ T
A
= –40 C to +85 C, V
IN
= 7 V, C
IN
= 0.47 F, C
OUT
= 0.47 F, unless
otherwise noted)
Min
Typ
Max
Unit
Conditions
V
IN
= V
OUT(NOM)
0.3 V to 12 V
I
L
= 0.1 mA to 50 mA
T
A
= 25°C
V
IN
= V
OUT(NOM)
0.3 V to 12 V
I
L
= 0.1 mA to 50 mA
–0.8
–1.4
0.02
0.06
0.55
0.19
0.6
0.08
0.025
0.004
2.0
0.75
0.75
+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
V
IN
= V
OUT(NOM)
0.3 V to 12 V
T
A
= 25°C
I
L
= 0.1 mA to 50 mA
T
A
= 25°C
I
L
= 50 mA
I
L
= 0.1 mA
V
IN
= 2.5 V
I
L
= 0.1 mA
V
OUT
= 98% of V
OUT(NOM)
I
L
= 50 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
= V
OUT(NOM)
1 V
f = 10 Hz–100 kHz
C
NR
= 0
C
NR
= 10 nF, C
L
= 10
µF
1.7
0.3
1.2
0.17
0.07
0.03
0.3
1
22
mA
mA
mA
V
V
V
V
V
µA
µA
µA
µA
µA
µA
µA
V
mA
µV
rms
µV
rms
SHUTDOWN THRESHOLD
SHUTDOWN PIN
INPUT CURRENT
GROUND CURRENT IN
SHUTDOWN MODE
V
THSD
I
SDIN
I
Q
0.005
0.01
1
3
2
4
13
OUTPUT CURRENT IN
SHUTDOWN MODE
ERROR PIN OUTPUT
LEAKAGE
ERROR PIN OUTPUT
“LOW” VOLTAGE
PEAK LOAD CURRENT
OUTPUT NOISE
@ 5 V OUTPUT
I
OSD
I
EL
V
EOL
I
LDPK
V
NOISE
0.12
100
100
30
0.3
NOTE
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. B
ADP3300
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
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165°C/W
θ
JC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92°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; operation beyond these limits can cause the device to
be permanently damaged.
Pin Mnemonic
1
2
GND
NR
Function
Ground Pin
Noise Reduction Pin. Used for further
reduction of the output noise (see text for
details). No connection if not used.
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.
Output of the Regulator, fixed 2.7, 3.0, 3.2,
3.3 or 5 volts output voltage. Bypass to
ground with a 0.47
µF
or larger capacitor.
Regulator Input
Open Collector Output which goes low to
indicate that the output is about to go out
of regulation.
3
SD
4
OUT
5
6
IN
ERR
PIN CONFIGURATION
GND 1
NR 2
6
ERR
5 IN
TOP VIEW
SD
3 (Not to Scale) 4 OUT
ADP3300
ORDERING GUIDE
Model
ADP3300ART-2.7
ADP3300ART-2.85
ADP3300ART-3
ADP3300ART-3.2
ADP3300ART-3.3
ADP3300ART-5
Voltage Output
2.7 V
2.85 V
3.0 V
3.2 V
3.3 V
5.0 V
Package Description
Surface Mount
Surface Mount
Surface Mount
Surface Mount
Surface Mount
Surface Mount
Package Options
SOT-23-6
SOT-23-6
SOT-23-6
SOT-23-6
SOT-23-6
SOT-23-6
Branding Information
LAB
LFB
LBB
LCB
LDB
LEB
Contact the factory for the availability of other output voltage options.
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 ADP3300 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. B
–3–
ADP3300–Typical Performance Characteristics
3.202
I
L
= 0mA
OUTPUT VOLTAGE – Volts
3.202
3.201
V
OUT
= 3.2V
V
IN
= 7V
800
3.201
OUTPUT VOLTAGE – Volts
3.200
I
L
= 10mA
3.199
V
OUT
= 3.2V
3.200
3.199
3.198
3.197
3.196
3.195
GROUND CURRENT – A
640
V
OUT
= 3.2V
I
L
= 0mA
480
320
3.198
3.197
3.196
3.3 4
I
L
= 50mA
160
5
6 7 8 9 10 11 12 13 14
INPUT VOLTAGE – Volts
0
8
16 24 32 40 48 56 64 72 80
OUTPUT LOAD – mA
0
0 1.2 2.4 3.6 4.8 6.0 7.2 8.4 9.6 10.812.0
INPUT VOLTAGE – Volts
TPC 1. Line Regulation Output
Voltage vs. Supply Voltage
TPC 2. Output Voltage vs. Load
Current
TPC 3. Quiescent Current vs.
Supply Voltage
820
0.2
0.1
700
V
IN
= 7V
600
GROUND CURRENT – A
OUTPUT VOLTAGE – %
690
GROUND CURRENT – A
500
400
300
200
100
0
–45 –25 –5
I
L
= 50mA
0.0
I
L
= 0 – 50mA
–0.1
–0.2
–0.3
–0.4
–45 –25 –5
560
430
I
L
= 0 TO 80mA
V
IN
= 7V
300
I
L
= 0mA
170
0
20
40
60
OUTPUT LOAD – mA
80
15 35 55 75 95 115 135
TEMPERATURE – C
15 35 55 75 95 115 135
TEMPERATURE – C
TPC 4. Quiescent Current vs.
Load Current
TPC 5. Output Voltage Varia-
tion % vs. Temperature
TPC 6. Quiescent Current vs.
Temperature
120
INPUT/OUTPUT VOLTAGE – Volts
5
INPUT/OUTPUT VOLTAGE – Volts
V
OUT
= 3.2V
R
L
= 64
4
8.0
V
IN
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0
0
20
V
SD
= V
IN
C
L
= 0.47 F
R
L
= 66
V
OUT
= 3.3V
40 60 80 100 120 140 160 180 200
TIME – s
V
OUT
INPUT/OUTPUT VOLTAGE – mV
96
72
3
48
2
R
L
= 33
1
24
0
0
20
40
60
OUTPUT LOAD – mA
80
0
0
1
2
4
3
2
3
INPUT VOLTAGE – Volts
1
0
TPC 7. Dropout Voltage
vs. Output Current
TPC 8. Power-Up/Power-Down
TPC 9. Power-Up Overshoot
–4–
REV. B
ADP3300
3.220
V
OUT
= 3.2V
3.210
3.200
3.190
3.210
3.200
3.190
VOLTS
3.220
V
OUT
= 3.2V
3.220
3.205
V
OUT
= 3.2V
C
L
= 0.47 F
VOLTS
R
L
= 64
C
L
= 0.47 F
3.200
3.195
3.190
VOLTS
3.180
R
L
= 3.2k
C
L
= 0.47 F
3.180
V
IN
mA
7.5
7.0
7.5
7.0
50
1
I
OUT
= 50mA
1mA
0
20 40
60 80 100 120 140 160 180 200
TIME – s
0
20 40 60 80 100 120 140 160 180 200
TIME – s
0
200
400
600
TIME – s
800
1000
TPC 10. Line Transient Response
TPC 11. Line Transient Response
TPC 12. Load Transient
VOLTS
3.220
3.205
VOLTS
V
OUT
= 3.2V
C
L
= 4.7 F
3.0
0
V
OUT
= 3.0V
4
V
OUT
3
2
C
L
= 0.47 F
V
OUT
3.2V
3.200
3.195
3.190
mA
200
VOLTS
C
L
= 4.7 F
1
0
+3
V
OUT
= 3.2V
R
L
= 64
150
100
50
I
OUT
50
mA
I
OUT
= 50mA
1mA
V
IN
= 7V
0
V
SD
3V
1
0
200
400
600
TIME – s
0
800
1000
0
1
2
3
TIME – sec
4
5
0
20
40
60
TIME – s
80
100
TPC 13. Load Transient
TPC 14. Short Circuit Current
TPC 15. Turn On
4
3.2V
3
2
1
0
VOLTAGE NOISE SPECTRAL DENSITY –
V
OUT
= 3.2V
R
L
= 64
C
L
= 0.47 F
RIPPLE REJECTION – dB
0
–10
–20
–30
–40
–50
–60
–70 b d
–80
–90
a c
100
1k
10k 100k
FREQUENCY – Hz
1M
10M
c
a
d
a. 0.47 F, R
L
= 33k
b. 0.47 F, R
L
= 64
c. 4.7 F, R
L
= 33k
d. 4.7 F, R
L
= 64
V
OUT
= 3.3V
b
V/ Hz
10
V
OUT
= 5V, C
L
= 0.47 F, 0.47 F BYPASS
PIN 5 TO PIN 1
I
L
= 1mA, C
NR =
0
V
OUT
= 3.3V, C
L
= 0.47 F,
I
L
= 1mA, C
NR
= 0
VOLTS
1
0.1
VOLTS
3
0
V
SD
V
OUT
= 2.7-5.0V, C
L
= 0.47 F,
I
L =
1mA
,
C
NR
= 10nF
V
OUT
= 2.7-5.0V, C
L
= 0.47 F,
I
L
= 1mA, C
NR
= 10nF
0
20
40
60
TIME – s
80
100
–100
10
0.01
100
1k
10k
FREQUENCY – Hz
100k
TPC 16. Turn Off
TPC 17. Power Supply Ripple
Rejection
TPC 18. Output Noise Density
REV. B
–5–
嵌入式系统
