ADP3335ARM-33 AD [Analog Devices], ADP3335ARM-33 Datasheet

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ADP3335ARM-33

Manufacturer Part Number
ADP3335ARM-33
Description
High Accuracy Ultralow IQ, 500 mA anyCAP Low Dropout Regulator
Manufacturer
AD [Analog Devices]
Datasheet
a
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.
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.
anyCAP is a registered trademark of Analog Devices Inc.
FEATURES
High Accuracy Over Line and Load:
Ultralow Dropout Voltage: 200 mV (Typ) @ 500 mA
Requires Only C
anyCAP = Stable with Any Type of Capacitor
Current and Thermal Limiting
Low Noise
Low Shutdown Current: < 1.0 A
2.6 V to 12 V Supply Range
–40 C to +85 C Ambient Temperature Range
Ultrasmall Thermally-Enhanced 8-Lead MSOP Package
APPLICATIONS
PCMCIA Card
Cellular Phones
Camcorders, Cameras
Networking Systems, DSL/Cable Modems
Cable Set-Top Box
MP3/CD Players
DSP Supply
(Including MLCC)
1.8% Over Temperature
O
= 1.0 F for Stability
0.9% @ 25 C,
High Accuracy Ultralow I
anyCAP
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
SD
IN
PROTECTION
V
IN
THERMAL
Figure 1. Typical Application Circuit
FUNCTIONAL BLOCK DIAGRAM
®
1 F
C
IN
Low Dropout Regulator
OFF
+
World Wide Web Site: http://www.analog.com
ON
DRIVER
IN
IN
SD
GND
ADP3335
Q1
NR
CC
OUT
OUT
OUT
GND
© Analog Devices, Inc., 2000
g
+
ADP3335
m
ADP3335
BANDGAP
C
1 F
Q
OUT
, 500 mA
REF
V
OUT
R1
R2
OUT
NR

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ADP3335ARM-33 Summary of contents

Page 1

FEATURES High Accuracy Over Line and Load: 1.8% Over Temperature Ultralow Dropout Voltage: 200 mV (Typ) @ 500 mA Requires Only C = 1.0 F for Stability O anyCAP = Stable with Any Type of Capacitor (Including MLCC) Current ...

Page 2

ADP3335–SPECIFICATIONS Parameter OUTPUT 4 Voltage Accuracy 4 Line Regulation Load Regulation Dropout Voltage Peak Load Current Output Noise GROUND CURRENT In Regulation In Dropout In Shutdown SHUTDOWN Threshold Voltage SD Input Current Output Current In Shutdown NOTES 1 All limits ...

Page 3

... Model ADP3335ARM-1.8 ADP3335ARM-2.5 ADP3335ARM-2.85 ADP3335ARM-3.3 ADP3335ARM-5 *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 ...

Page 4

Performance Characteristics ADP3335 2.202 V = 2.2V OUT 2.201 L 2.200 2.199 150mA 2.198 2.197 300mA 2.196 2.195 500mA 2.194 INPUT VOLTAGE – Volts Figure 2. Line Regulation Output Voltage ...

Page 5

V = 2.2V OUT R = 4.4 2.189 2.179 3.500 3.000 40 80 140 180 TIME – s Figure 11. Line Transient Response 2.3 2.2 2 2.2V OUT R ...

Page 6

ADP3335 THEORY OF OPERATION The new anyCAP LDO ADP3335 uses a single control loop for regulation and reference functions. The output voltage is sensed by a resistive voltage divider consisting of R1 and R2 which is varied to provide the ...

Page 7

It is important to note that as C increases, the turn-on time NR will be delayed. With NR values greater than 1 nF, this delay may be on the order of several milliseconds OUT ADP3335 IN ...

Page 8

ADP3335 OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 8-Lead mini_SO (RM-8) 0.122 (3.10) 0.114 (2.90 0.122 (3.10) 0.199 (5.05) 0.114 (2.90) 0.187 (4.75 PIN 1 0.0256 (0.65) BSC 0.120 (3.05) 0.120 (3.05) 0.112 (2.84) 0.112 ...

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