ADP3335 データシートの表示（PDF） - Analog Devices
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ADP3335 Datasheet PDF : 16 Pages
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Data Sheet
High Accuracy, Ultralow IQ, 500 mA,
anyCAP Low Dropout Regulator
ADP3335
FEATURES
High accuracy over line and load: ±0.9% at 25°C, ±1.8% over
temperature
Ultralow dropout voltage: 200 mV (typical) at 500 mA
Requires only CO = 1.0 µF for stability
anyCAP® = stable with any type of capacitor (including MLCC)
Current and thermal limiting
Low noise
Low shutdown current: < 10 nA (typical)
2.6 V to 12 V supply range
–40°C to +85°C ambient temperature range
APPLICATIONS
PCMCIA cards
Cellular phones
Camcorders, cameras
Networking systems, DSL/cable modems
Cable set-top box
MP3/CD players
DSP supplies
FUNCTIONAL BLOCK DIAGRAM
IN
Q1
THERMAL
PROTECTION
CC
ADP3335
OUT
R1
NR
DRIVER
gm
R2
SD
BANDGAP +
REF –
GND
Figure 1.
5
NR
ADP3335
OUT 3
7 IN
OUT 2
VIN
CIN
1µF
+
8 IN
SD
6
ON
OFF
OUT 1
+
GND
4
VOUT
COUT
1µF
Figure 2. Typical Application Circuit
GENERAL DESCRIPTION
The ADP3335 is a member of the ADP333x family of precision,
low dropout, anyCAP voltage regulators. It operates with an input
voltage range of 2.6 V to 12 V, and delivers a continuous load
current up to 500 mA. The ADP3335 stands out from conventional
low dropout regulators (LDOs) by using an enhanced process
enabling 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 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
a low quiescent current of 80 µA (typical) in light load situations.
Rev. D
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