REV.0
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ADP3333
High Accuracy Ultralow I
Q
, 300 mA,
anyCAP
®
Low Dropout Regulator
FUNCTIONAL BLOCK DIAGRAM
THERMAL
PROTECTION
CC
IN
ADP3333
OUT
GND
Q1
BANDGAP
REF
DRIVER
g
m
SD
R1
R2
FEATURES
High Accuracy Over Line and Load: H115500.8% @ 25H11543C,
H115501.8% Over Temperature
Ultralow Dropout Voltage: 230 mV (Max) @ 300 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 H9262A
2.6 V to 12 V Supply Range
–40H11543C to +85H11543C Ambient Temperature Range
Ultrasmall 8-Lead MSOP Package
APPLICATIONS
Cellular Phones
PCMCIA Cards
Personal Digital Assistants (PDAs)
DSP/ASIC Supplies
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 IN
GND
V
OUT
ON
OFF
OUT
SD
C
IN
1H9262F
C
OUT
1H9262F
NC = NO CONNECT
Figure 1.Typical Application Circuit
anyCAP is a registered trademark of Analog Devices, Inc.