a
FEATURES
High Accuracy Over Line and Load: 0.8% @ 25 C,
1.8% Over Temperature
Ultralow Dropout Voltage: 230 mV (Max) @ 300 mA
Requires Only C
O
= 1.0 F for Stability
anyCAP = Stable with Any Type of Capacitor
(Including MLCC)
Current and Thermal Limiting
Low Noise
Low Shutdown Current: < 1 A
2.6 V to 12 V Supply Range
–40 C to +85 C Ambient Temperature Range
Ultrasmall 8-Lead MSOP Package
APPLICATIONS
Cellular Phones
PCMCIA Cards
Personal Digital Assistants (PDAs)
DSP/ASIC Supplies
High Accuracy Ultralow I
Q
, 300 mA,
anyCAP
®
Low Dropout Regulator
ADP3333
FUNCTIONAL BLOCK DIAGRAM
IN
THERMAL
PROTECTION
Q1
OUT
ADP3333
CC
g
m
R1
DRIVER
SD
R2
BANDGAP
REF
GND
GENERAL DESCRIPTION
ADP3333 is a member of the ADP333x family of precision low
dropout anyCAP voltage regulators. Pin-compatible with the
MAX8860, the ADP3333 operates with a wider input voltage
range of 2.6 V to 12 V and delivers a load current up to 300 mA.
ADP3333 stands out from other conventional LDOs with a
novel architecture and an enhanced process that enables it to
offer performance advantages over its competition. Its patented
design requires only a 1.0
µF
output capacitor for stability. This
device is insensitive to output capacitor Equivalent Series Resis-
tance (ESR), and is stable with any good quality capacitor,
including ceramic (MLCC) types for space-restricted applica-
tions. ADP3333 achieves exceptional accuracy of
±
0.8% at
room temperature and
±
1.8% over temperature, line and load
variations. The dropout voltage of ADP3333 is only 140 mV
(typical) at 300 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 ADP3333 has ultralow quiescent current, 70
µA
(typ)
in light load situations.
ADP3333
NC
V
IN
C
IN
1 F
SD
OFF
ON
NC = NO CONNECT
IN
OUT
C
OUT
1 F
V
OUT
GND
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 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
ADP3333–SPECIFICATIONS
Parameter
OUTPUT
Voltage Accuracy
2
Symbol
V
OUT
1
(V
IN
= 6.0 V, C
IN
= C
OUT
= 1.0 F, T
J
= –40 C to +125 C, unless otherwise noted)
Min
0.8
Typ
Max
0.8
Unit
%
Condition
V
IN
= V
OUTNOM
0.3 V to 12 V
I
L
= 0.1 mA to 300 mA
T
J
= 25°C
V
IN
= V
OUTNOM
0.3 V to 12 V
I
L
= 0.1 mA to 300 mA
V
IN
= V
OUTNOM
0.3 V to 12 V
T
J
= 25°C
I
L
= 0.1 mA to 300 mA
T
J
= 25°C
V
OUT
= 98% of V
OUTNOM
I
L
= 300 mA
I
L
= 200 mA
I
L
= 0.1 mA
V
IN
= V
OUTNOM
+ 1 V
f = 10 Hz–100 kHz, C
L
= 10
µF
I
L
= 300 mA
I
L
= 300 mA
I
L
= 300 mA, T
J
= 25°C
I
L
= 300 mA, T
J
= 85°C
I
L
= 200 mA
I
L
= 10 mA
I
L
= 0.1 mA
V
IN
= V
OUTNOM
– 100 mV
I
L
= 0.1 mA,
V
IN
= V
OUTNOM
– 100 mV
I
L
= 0.1 mA, T
J
= 0°C to 125°C
SD
= 0 V, V
IN
= 12 V
ON
OFF
0
≤
SD
≤
12 V
0
≤
SD
≤
5 V
T
J
= 25°C V
IN
= 12 V
T
J
= 125°C V
IN
= 12 V
–1.8
0.04
0.04
+1.8
%
mV/V
mV/mA
Line Regulation
2
Load Regulation
Dropout Voltage
V
DROP
Peak Load Current
Output Noise
GROUND CURRENT
In Regulation
I
LDPK
V
NOISE
140
105
30
600
45
230
185
mV
mV
mV
mA
µV
rms
I
GND
In Dropout
I
GND
2.0
2.0
1.5
1.4
200
70
70
70
0.01
2.0
0.85
0.8
0.01
0.01
5.5
4.3
3.3
275
100
190
160
1
mA
mA
mA
mA
µA
µA
µA
µA
µA
V
V
µA
µA
µA
µA
In Shutdown
SHUTDOWN
Threshold Voltage
SD
Input Current
Output Current In Shutdown
NOTES
1
Application stable with no load.
2
V
IN
= 2.6 V for models with V
OUTNOM
≤
2.3 V.
Specifications subject to change without notice.
I
GNDSD
V
THSD
I
SD
I
OSD
0.4
7
4.5
1
1
–2–
REV. 0
ADP3333
ABSOLUTE MAXIMUM RATINGS*
PIN FUNCTION DESCRIPTIONS
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 +125°C
JA
(4-layer) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158°C/W
JA
(2-layer) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220°C/W
Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C
Lead Temperature (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
1
2
Mnemonic Function
OUT
IN
Output of the Regulator. Bypass to ground
with a 1.0
µF
or larger capacitor.
Input pin. Bypass to ground with a 1.0
µF
or larger capacitor.
Ground Pin
No Connect
Active Low Shutdown Pin. Connect to
ground to disable the regulator output.
When shutdown is not used, his pin should
be connected to the input pin
3
GND
4–6, 8 NC
7
SD
ORDERING GUIDE
Model
ADP3333ARM-1.5
ADP3333ARM-1.8
ADP3333ARM-2.5
ADP3333ARM-2.77
ADP3333ARM-3
ADP3333ARM-3.15
ADP3333ARM-3.3
ADP3333ARM-5
Output
Voltage
1.5 V
1.8 V
2.5 V
2.77 V
3V
3.15 V
3.3 V
5V
Package
Option
RM-8
(MSOP-8)
RM-8
(MSOP-8)
RM-8
(MSOP-8)
RM-8
(MSOP-8)
RM-8
(MSOP-8)
RM-8
(MSOP-8)
RM-8
(MSOP-8)
RM-8
(MSOP-8)
Branding
Information
LKA
LKB
LKC
PIN CONFIGURATION
OUT
1
IN
2
8
NC
7
SD
TOP VIEW
GND
3
(Not to Scale)
6
NC
ADP3333
NC*
4
5
NC
NC = NO CONNECT
LKD
LKE
LKF
LKG
LKH
*CAN
BE CONNECTED
TO ANY OTHER PIN.
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 ADP3333 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–
ADP3333 –Typical Performance Characteristics
2.502
0mA
2.500
V
OUT
= 2.5V
2.502
2.500
OUTPUT VOLTAGE – V
140
V
IN
= 6V
V
OUT
= 2.5V
I
L
= 100 A
120
V
OUT
= 2.5V
2.498
100mA
2.496
2.494
200mA
2.492
300mA
2.490
2.488
3
4
5
6
8
7
9 10
INPUT VOLTAGE – V
11
12
2.498
2.496
2.494
2.492
2.490
2.488
0
50
150
250
200
100
OUTPUT LOAD – mA
300
GROUND CURRENT – A
OUTPUT VOLTAGE – V
100
80
60
40
20
0
I
L
= 0
0
2
4
6
8
10
INPUT VOLTAGE – Volts
12
TPC 1. Line Regulation Output
Voltage vs. Supply Voltage
TPC 2. Output Voltage vs. Load
Current
TPC 3. Ground Current vs. Supply
Voltage
2.5
V
IN
= 6V
GROUND CURRENT – mA
GROUND CURRENT – mA
2.0
1.0
0.9
0.8
0.7
3.5
0
3.0
200mA
I
L
= 300mA
2.5
2.0
1.5
1.0
0.5
0
–25
0
25
50
75
100
JUNCTION TEMPERATURE – C
125
I
L
= 0mA
0
–50
–25
0
25
50
75
100
125
I
L
= 200mA
I
L
= 100mA
V
IN
= 6V
OUTPUT CHANGE – %
1.5
0.6
0.5
0.4
0.3
0.2
0.1
0.0
–0.1
–0.2
–0.3
–0.4
–50
300mA
1.0
0.5
0
0
50
100
150
200
OUTPUT LOAD – mA
250
300
JUNCTION TEMPERATURE – C
TPC 4. Ground Current vs.
Load Current
TPC 5. Output Voltage Variation % vs.
Junction Temperature
TPC 6. Ground Current vs.
Junction Temperature
0.16
INPUT/OUTPUT VOLTAGE – mV
0.14
INPUT/OUTPUT VOLTAGE – V
V
OUT
– V
0.12
0.10
0.08
0.06
0.04
0.02
0
3.0
2.5
2.0
1.5
V
OUT
= 2.5V
SD
= V
IN
R
L
= 8.3
3
2
1
0
C
OUT
= 1 F
C
OUT
= 10 F
V
IN
– V
1.0
0.5
0
1
2
3
TIME – Sec
4
4
2
0
200
400
600
TIME – s
V
OUT
= 2.5V
SD
= V
IN
R
L
= 8.3
800
0
50
100
150
200
OUTPUT LOAD – mA
250
300
TPC 7. Dropout Voltage vs.
Output Current
TPC 8. Power-Up/Power-Down
TPC 9. Power-Up Response
–4–
REV. 0
ADP3333
2.52
V
OUT
– V
2.51
2.50
2.49
V
OUT
– V
2.51
2.50
2.49
Volts
V
OUT
= 2.5V
R
L
= 8.3
C
L
= 1 F
2.52
V
OUT
= 2.5V
R
L
= 8.3
C
L
= 10 F
2.7
2.6
2.5
2.4
300
V
IN
= 4V
V
OUT
= 2.5V
C
L
= 1 F
V
IN
– V
V
IN
– V
3.00
40
80
140
TIME – s
180
3.00
40
80
140
TIME – s
180
mA
3.50
3.50
10
200
400
600
TIME – s
800
TPC 10. Line Transient Response
TPC 11. Line Transient Response
TPC 12. Load Transient Response
2.7
Volts
Volts
V
OUT
2.6
2.5
2.4
V
IN
= 4V
V
OUT
= 2.5V
C
L
= 10 F
3 1 F
2.5
0
3
2
V
IN
= 6V
V
SD
2
1
0
1 F
2
0
200
400
600
TIME – s
10 F
10 F
300
mA
1
10
200
400
TIME – s
600
800
0
V
IN
= 6V
200
400
600
TIME – s
800
V
IN
= 6V
V
OUT
= 2.5V
R
L
= 8.3
A
800
TPC 13. Load Transient Response
TPC 14. Short Circuit Current
TPC 15. Turn ON-Turn OFF
Response
–20
–30
120
100
V
OUT
= 2.2V
C
L
= 1 F
I
L
= 500mA
C
L
= 1 F
I
L
= 50 A
VOLTAGE NOISE SPECTRAL
DENSITY – V/ Hz
C
L
= 10 F
I
L
= 500mA
RMS NOISE – V
V
OUT
= 2.5V
I
L
= 1mA
C
L
= 10 F
C
L
= 1 F
100
RIPPLE REJECTION – dB
10
–40
–50
–60
–70
–80
–90
10
100
80
1
60
300mA
40
0mA
0.1
C
L
= 10 F
I
L
= 50 A
1k
10k
100k
FREQUENCY – Hz
1M
10M
0.01
20
0
0
10
20
C
L
–
30
F
40
50
0.001
10
100
1k
10k
100k
FREQUENCY – Hz
1M
TPC 16. Power Supply Ripple
Rejection
TPC 17. RMS Noise vs. C
L
(10 Hz–100 kHz)
TPC 18. Output Noise Density
REV. 0
–5–
