ADP3335_0.pdf
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ADP3335 Data Sheet
a
High Accuracy Ultralow I
Q
, 500 mA
anyCAP
®
Low Dropout Regulator
ADP3335
FEATURES
High Accuracy Over Line and Load:
FUNCTIONAL BLOCK DIAGRAM
0.9% @ 25
C,
1.8% Over Temperature
Ultralow Dropout Voltage: 200 mV (Typ) @ 500 mA
Requires Only C
O
= 1.0
IN
Q1
OUT
F for Stability
anyCAP = Stable with Any Type of Capacitor
(Including MLCC)
Current and Thermal Limiting
Low Noise
Low Shutdown Current: < 1.0
THERMAL
PROTECTION
ADP3335
R1
CC
NR
DRIVER
g
m
R2
A
SD
BANDGAP
REF
2.6 V to 12 V Supply Range
–40
C Ambient Temperature Range
Ultrasmall Thermally-Enhanced 8-Lead MSOP Package
GND
APPLICATIONS
PCMCIA Card
Cellular Phones
Camcorders, Cameras
Networking Systems, DSL/Cable Modems
Cable Set-Top Box
MP3/CD Players
DSP Supply
NR
ADP3335
OUT
GENERAL DESCRIPTION
The ADP3335 is a member of the ADP330x family of precision
low dropout anyCAP voltage regulators. The ADP3335 operates
with an input voltage range of 2.6 V to 12 V and delivers a con-
tinuous load current up to 500 mA. The ADP3335 stands out
from conventional LDOs with the lowest thermal resistance of
any MSOP-8 package and an enhanced process that enables it
to offer performance advantages beyond its competition. Its
patented design requires only a 1.0 µF output capacitor for sta-
bility. This device is insensitive to output capacitor Equivalent
Series Resistance (ESR), and is stable with any good quality
capacitor, including ceramic (MLCC) types for space-restricted
applications. The ADP3335 achieves exceptional accuracy of
± 0.9% at room temperature and ± 1.8% over temperature, line,
and load. The dropout voltage of the ADP3335 is only 200 mV
(typical) at 500 mA. This device also includes a safety current
limit, thermal overload protection and a shutdown feature. In
shutdown mode, the ground current is reduced to less than
1 µA. The ADP3335 has ultralow quiescent current 80 µA
(typical) in light load situations.
V
IN
IN
IN
OUT
OUT
V
OUT
+
+
C
IN
1
F
C
OUT
1
F
SD GND
ON
OFF
Figure 1. Typical Application Circuit
anyCAP is a registered trademark of Analog Devices Inc.
REV. 0
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., 2000
C to +85
ADP3335–SPECIFICATIONS
1, 2, 3
(V
IN
= 6.0 V, C
IN
= C
OUT
= 1.0
F, T
A
= –40
C to +85
C, unless otherwise noted)
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
OUTPUT
Voltage Accuracy
4
V
OUT
V
IN
= V
OUT(NOM)
+ 0.4 V to 12 V
–0.9
+0.9
%
I
L
= 0.1 mA to 500 mA
T
A
= 25°C
V
IN
= V
OUT(NOM)
+ 0.4 V to 12 V
–1.8
+1.8
%
I
L
= 0.1 mA to 500 mA
T
A
= 85°C
V
IN
= V
OUT(NOM)
+ 0.4 V to 12 V
–2.3
+2.3
%
I
L
= 0.1 mA to 500 mA
T
J
= 150°C
Line Regulation
4
V
IN
= V
OUT(NOM)
+ 0.4 V to 12 V
0.04
mV/V
I
L
= 0.1 mA
T
A
= 25°C
Load Regulation
I
L
= 0.1 mA to 500 mA
0.04
mV/mA
T
A
= 25°C
Dropout Voltage
V
DROP
V
OUT
= 98% of V
OUT(NOM)
I
L
= 500 mA
200
370
mV
I
L
= 300 mA
140
230
mV
I
L
= 50 mA
30
110
mV
I
L
= 0.1 mA
10
40
mV
Peak Load Current
I
LDPK
V
IN
= V
OUT(NOM)
+ 1 V
800
mA
Output Noise
V
NOISE
f = 10 Hz–100 kHz, C
L
= 10 µF
47
µV rms
I
L
= 500 mA, C
NR
= 10 nF
f = 10 Hz–100 kHz, C
L
= 10 µF
95
µV rms
I
L
= 500 mA, C
NR
= 0 nF
GROUND CURRENT
In Regulation
I
GND
I
L
= 500 mA
4.5
10
mA
I
L
= 300 mA
2.6
6
mA
I
L
= 50 mA
0.5
2.5
mA
I
L
= 0.1 mA
80
110
µ
A
In Dropout
I
GND
V
IN
= V
OUT(NOM)
– 100 mV
120
400
µ
A
I
L
= 0.1 mA
In Shutdown
I
GNDSD
SD
= 0 V, V
IN
= 12 V
0.01
1
µ
A
SHUTDOWN
Threshold Voltage
V
THSD
ON
2.0
V
OFF
0.4
V
SD
Input Current
I
SD
0 ≤
SD
≤ 5 V
1.2
3
µA
Output Current In Shutdown
I
OSD
T
A
= 25°C, V
IN
= 12 V
1.2
5
µA
T
A
= 85°C, V
IN
= 12 V
1.2
5
µA
NOTES
1
All limits at temperature extremes are guaranteed via correlation using standard statistical quality control (SQC) methods.
2
Ambient temperature of 85
°
C corresponds to a junction temperature of 125
°
C under pulsed full load test conditions.
3
Application stable with no load.
4
V
IN
= 2.6 V to 12 V for models with V
OUT(NOM)
≤
2.2 V.
Specifications subject to change without notice.
–2–
REV. 0
ADP3335
ABSOLUTE MAXIMUM RATINGS
*
Input Supply Voltage . . . . . . . . . . . . . . . . . . . –0.3 V to +16 V
Shutdown Input Voltage . . . . . . . . . . . . . . . . –0.3 V to +16 V
Power Dissipation . . . . . . . . . . . . . . . . . . . Internally Limited
Operating Ambient Temperature Range . . . . –40°C to +85°C
Operating Junction Temperature Range . . . –40°C to +150°C
θ
JA
2-layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153°C/W
θ
JA
4-layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110°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 FUNCTION DESCRIPTIONS
Pin
No. Mnemonic Function
1, 2, 3 OUT
Output of the Regulator. Bypass to
ground with a 1.0 µF or larger capacitor.
All pins must be connected together for
proper operation.
4
GND
Ground Pin.
5
NR
Noise Reduction Pin. Used for further
reduction of output noise (see text for
detail).
Capacitor required if C
OUT
> 3.3 µF.
6
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.
7, 8
IN
Regulator Input. All pins must be con-
nected together for proper operation.
PIN CONFIGURATION
OUT
1
2
3
4
ADP3335
8
7
6
5
IN
OUT
OUT
GND
TOP VIEW
(Not to Scale)
IN
SD
NR
ORDERING GUIDE
Output
Package
Branding
Model
Voltage
*
Option
Information
ADP3335ARM-1.8
1.8 V
RM-8 (MSOP-8)
LFA
ADP3335ARM-2.5
2.5 V
RM-8 (MSOP-8)
LFC
ADP3335ARM-2.85
2.85 V
RM-8 (MSOP-8)
LFD
ADP3335ARM-3.3
3.3 V
RM-8 (MSOP-8)
LFE
ADP3335ARM-5
5 V
RM-8 (MSOP-8)
LFF
*
Contact the factory for 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 ADP3335 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. 0
–3–
ADP3335
–Typical Performance Characteristics
(T
A
= 25
C unless otherwise noted.)
2.202
2.201
140
V
OUT
= 2.2V
V
OUT
= 2.2V
V
IN
= 6V
I
L
= 100
A
V
OUT
= 2.2V
I
L
= 0
2.201
2.200
120
2.200
2.199
100
2.199
2.198
150mA
80
2.198
2.197
I
L
= 0
2.197
2.196
60
300mA
40
2.196
2.195
2.195
500mA
2.194
20
2.194
2.193
0
2
4
6
8
10
12
0
100
200
300
400
500
0
2
4
6
8
10
12
INPUT VOLTAGE – Volts
OUTPUT LOAD – mA
INPUT VOLTAGE – Volts
Figure 2. Line Regulation Output
Voltage vs. Supply Voltage
Figure 3. Output Voltage vs. Load
Current
Figure 4. Ground Current vs. Supply
Voltage
5.0
1
8
0.9
0.8
0.7
0
I
L
= 500mA
7
4.0
300mA
6
0.6
0.5
5
3.0
300mA
0.4
0.3
4
2.0
0.2
0.1
500mA
3
0
100mA
2
1.0
–0.1
500mA
–0.2
–0.3
1
50mA
0
0
0
0
0
–0.4
100
200
300
400
500
–40
–15
5
25
45
65
85
105
125
–40
–55 5555
105
125
OUTPUT LOAD – mA
JUNCTION TEMPERATURE –
C
JUNCTION TEMPERATURE –
C
Figure 5. Ground Current vs. Load
Current
Figure 6. Output Voltage Variation %
vs. Junction Temperature
Figure 7. Ground Current vs. Junction
Temperature
250
200
3.0
V
OUT
= 2.2V
SD = V
IN
R
L
= 4.4
3
C
OUT
= 1
F
2.5
2
150
2.0
1
C
OUT
= 10
F
1.5
0
100
1.0
4
0.5
2
V
OUT
= 2.2V
SD = V
IN
R
L
= 4.4
50
0
0
0
0
1
2
3
4
200
400
600
800
TIME – Sec
TIME –
s
100
200
300
400
500
OUTPUT LOAD – mA
Figure 8. Dropout Voltage vs.
Output Current
Figure 9. Power-Up/Power-Down
Figure 10. Power–Up Response
–4–
REV. 0
ADP3335
2.210
2.210
2.3
2.200
2.200
2.2
2.190
2.190
V
OUT
= 2.2V
R
L
= 4.4
C
L
= 10
F
2.1
V
IN
= 4V
V
OUT
= 2.2
V
OUT
= 2.2V
R
L
= 4.4
2.189
2.189
C
L
= 1
F
C
L
= 1
F
2.179
2.179
400
3.500
3.500
200
3.000
3.000
0
40
80
140
180
40
80
140
180
200
400
600
800
TIME –
s
TIME –
s
TIME –
s
Figure 11. Line Transient Response
Figure 12. Line Transient Response
Figure 13. Load Transient Response
2.3
2.2
3
1
F
V
IN
= 6V
V
OUT
= 2.2V
R
L
= 4.4
2.2
0
2
2.1
V
OUT
= 2.2V
R
L
= 4.4
C
L
= 10
1
10
F
FULL SHORT
10
F
3
800m
SHORT
0
1
F
F
400
2
200
1
V
IN
= 4V
2
0
0
0
200
400
600
800
200
400
600
800
200
400
600
800
TIME –
s
TIME –
s
TIME –
s
Figure 14. Load Transient Response
Figure 15. Short Circuit Current
Figure 16. Turn On–Turn Off Response
–20
160
100
V
OUT
= 2.2V
V
OUT
= 2.2V
I
L
= 1mA
C
NR
= 10nF
F
I
L
= 500mA
–30
140
F
I
L
= 500mA
10
F
C
NR
= 10nF
C
L
= 10
F
C
NR
= 0
120
–40
I
L
= 500mA WITHOUT
NOISE REDUCTION
I
L
= 500mA WITH
NOISE REDUCTION
C
L
= 1
F
C
NR
= 0
–50
C
L
= 1
F
I
L
= 50
A
100
1
80
–60
0.1
I
L
= 0mA WITHOUT
NOISE REDUCTION
60
C
L
= 1
F
C
NR
= 10nF
–70
40
0.01
C
L
= 10
F
–80
I
L
= 50
A
20
–90
I
L
= 0mA WITH NOISE REDUCTION
0.001
0
10
100
1k
10k 100k
1M
10M
0
10
20
30
40
50
10
100
1k
10k
100k
1M
FREQUENCY – Hz
C
L
–
F
FREQUENCY – Hz
Figure 17. Power Supply Ripple
Rejection
Figure 18. RMS Noise vs. C
L
(10 Hz–100 kHz)
Figure 19. Output Noise Density
REV. 0
–5–
C
L
= 10
C
L
= 1
C
L
= 10
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