ADP3333 View Datasheet(PDF) - Analog Devices
Part Name
Description
Manufacturer
ADP3333 Datasheet PDF : 12 Pages
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High Accuracy Ultralow IQ, 300 mA,
anyCAP Low Dropout Regulator
ADP3333
FEATURES
High accuracy over line and load: ±0.8% @ 25°C,
±1.8% over temperature
Ultralow dropout voltage: 230 mV (maximum) @ 300 mA
Requires only COUT = 1.0 µF for stability
anyCAP is stable with any type of capacitor (including MLCC)
Current and thermal limiting
Low noise
Low shutdown current: < 1 µA
2.6 V to 12 V supply range
−40°C to +85°C ambient temperature range
Ultrasmall 8-lead MSOP package
APPLICATIONS
Cellular phones
PCMCIA cards
Personal digital assistants (PDAs)
DSP/ASIC supplies
GENERAL DESCRIPTION
The ADP3333 is a member of the ADP333x family of precision
low dropout (LDO) 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 resistance (ESR) and is stable with any good quality
capacitor, including ceramic (MLCC) types for space-restricted
applications. The ADP3333 achieves exceptional accuracy of
±0.8% at room temperature and ±1.8% over temperature, line,
and load variations. The dropout voltage of the 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 (typical) in light load situations.
FUNCTIONAL BLOCK DIAGRAM
IN
Q1
OUT
THERMAL
PROTECTION
ADP3333 R1
CC
DRIVER
gm
SD
R2
BAND GAP
REF
GND
Figure 1.
ADP3333
NC 4
VIN
2 IN
CIN +
1µF
SD
7
ON
OFF
OUT 1
GND
3
VOUT
+ COUT
1µF
NC = NO CONNECT
Figure 2. Typical Application Circuit
Rev. B
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