High Accuracy over Line and Load:
1.8% over Temperature
500 mA Current Capability
Ultralow Dropout Voltage
Requires Only C
= 1.0 F for Stability
anyCAP = Stable with Any Type of Capacitor
Current and Thermal Limiting
Low Shutdown Current: < 1.0 A (Typ)
2.6 V to 11 V Supply Range
1.5 V to 10 V Output Range
–40 C to +85 C Ambient Temperature Range
TFT LCD Modules
Networking Systems, DSL/Cable Modems
Cable Set-Top Boxes
Personal Digital Assistants
The ADP3334 is a member of the ADP333x family of precision
low dropout anyCAP voltage regulators. The ADP3334 operates
with an input voltage range of 2.6 V to 11 V and delivers a
continuous load current up to 500 mA. The novel anyCAP
architecture requires only a very small 1 µF output capacitor for
stability, and the LDO is insensitive to the capacitor’s equivalent
series resistance (ESR). This makes the ADP3334 stable with any
capacitor, including ceramic (MLCC) types for space restricted
The ADP3334 achieves exceptional accuracy of ±0.9% at room
temperature and ±1.8% over temperature, line, and load. The
dropout voltage of the ADP3334 is only 200 mV (typical) at
500 mA. This device also includes a safety current limit, ther-
mal overload protection, and a shutdown feature. In shutdown
mode, the ground current is reduced to less than 1 µA. The
ADP3334 has low quiescent current of 90 µA (typical) in light
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. Trademarks and
registered trademarks are the property of their respective companies.
High Accuracy, Low I
Adjustable Low Dropout Regulator
0.9% @ 25 C,
The ADP3334 is available in three different package options:
1. Excellent thermal capability, space saving 3 mm
2. Popular low profile MSOP-8.
3. Traditional thermal enhanced SOIC-8.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
FUNCTIONAL BLOCK DIAGRAM
Figure 1. Typical Application Circuit
© 2003 Analog Devices, Inc. All rights reserved.
3 mm LFCSP.