High Accuracy, Ultralow I
Q
, 1.5 A,
anyCAP Low Dropout Regulator
Data Sheet
ADP3339
Rev. C
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FEATURES
High accuracy over line and load: ±0.9% at 25°C,
±1.5% over temperature
Ultralow dropout voltage: 230 mV (typical) at 1.5 A
Requires only C
OUT
= 1.0 μF for stability
anyCAP = stable with any type of capacitor (including MLCC)
Current and thermal limiting
Low noise
2.8 V to 6 V input voltage range
−40°C to +85°C ambient temperature range
SOT-223 package
APPLICATIONS
Notebooks, palmtop computers
SCSI terminators
Battery-powered systems
PCMCIA regulators
Bar code scanners
Camcorders, cameras
FUNCTIONAL BLOCK DIAGRAM
THERMAL
PROTECTION
CC
IN
ADP3339
OUT
R1
R2
GND
Q1
BANDGAP
REF
DRIVER
g
m
02191-0-001
Figure 1.
V
IN
OUT
ADP3339
1
μ
F
1
μ
F
V
OUT
GND
IN
02191-0-002
Figure 2. Typical Application Circuit
GENERAL DESCRIPTION
The ADP3339 is a member of the ADP33xx family of precision,
low dropout, anyCAP® voltage regulators. The ADP3339
operates with an input voltage range of 2.8 V to 6 V and delivers
a load current up to 1.5 A. The ADP3339 stands out from the
conventional LDOs with a novel architecture and an enhanced
process that enables it to offer performance advantages and
higher output current than its competition. Its patented design
requires only a 1.0 μF output capacitor for stability. 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
ADP3339 achieves exceptional accuracy of ±0.9% at room
temperature and ±1.5% over temperature, line, and load
variations. The dropout voltage of the ADP3339 is only 230 mV
(typical) at 1.5 A. The device also includes a safety current limit
and thermal overload protection. The ADP3339 has ultralow
quiescent current: 130 μA (typical) in light load situations.
