REV.0
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a
ADP3336
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
High Accuracy Ultralow I
Q
, 500 mA
anyCAP
®
Adjustable Low Dropout Regulator
FEATURES
High Accuracy Over Line and Load: H115500.9% @ 25H11543C,
H115501.8% Over Temperature
Ultralow Dropout Voltage: 200 mV (Typ) @ 500 mA
Requires Only C
O
= 1.0 H9262F for Stability
anyCAP = Stable with Any Type of Capacitor
(Including MLCC)
Current and Thermal Limiting
Low Noise
Low Shutdown Current: < 1.0 H9262A
2.6 V to 12 V Supply Range
1.5 V to 10 V Output Range
–40H11543C to +85H11543C 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
GENERAL DESCRIPTION
The ADP3336 is a member of the ADP333x family of precision
low dropout anyCAP voltage regulators. The ADP3336 operates
with an input voltage range of 2.6 V to 12 V and delivers a
continuous load current up to 500 mA. The ADP3336 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
stability. This device is insensitive to output capacitor Equiva-
lent Series Resistance (ESR), and is stable with any good
quality capacitor, including ceramic (MLCC) types for space-
restricted applications. The ADP3336 achieves exceptional
accuracy of ±0.9% at room temperature and ±1.8% over tem-
perature, line, and load. The dropout voltage of the ADP3336 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 ADP3336 has ultralow quiescent current
80 µA (typical) in light load situations.
C
OUT
1H9262F
ADP3336
OUT
V
IN IN
GND
V
OUT
FB
ON
OFF
IN OUT
OUT
R1
R2
SD
C
IN
1H9262F
Figure 1. Typical Application Circuit
anyCAP is a registered trademark of Analog Devices Inc.
FUNCTIONAL BLOCK DIAGRAM
THERMAL
PROTECTION
CC
IN
ADP3336
OUT
GND
Q1
BANDGAP
REF
DRIVER
g
m
FB
SD