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ADP3335

Part Number	ADP3335
Manufacturer	Analog Devices
Description	anyCAP Low Dropout Regulator
Published	Mar 23, 2005
Detailed Description	a FEATURES High Accuracy Over Line and Load: ؎ 0.9% @ 25؇ C, ؎1.8% Over Temperature Ultralow Dropout Voltage: 200 mV (Ty...
Datasheet	ADP3335 PDF File

Overview

a FEATURES High Accuracy Over Line and Load: ؎ 0.
9% @ 25؇ C, ؎1.
8% Over Temperature Ultralow Dropout Voltage: 200 mV (Typ) @ 500 mA Requires Only CO = 1.
0 ␮F for Stability anyCAP = Stable with Any Type of Capacitor (Including MLCC) Current and Thermal Limiting Low Noise Low Shutdown Current: < 1.
0 ␮ A 2.
6 V to 12 V Supply Range –40؇ C to +85؇ C 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 High Accuracy Ultralow IQ, 500 mA anyCAP® Low Dropout Regulator ADP3335 FUNCTIONAL BLOCK DIAGRAM Q1 THERMAL PROTECTION IN OUT ADP3335 CC gm R1 NR DRIVER SD R2 BANDGAP REF GND NR ADP3335 OUT IN VIN C IN 1␮F + IN SD ON OFF OUT OUT + GND C OUT 1␮F VOUT The ADP3335 is a member of the ADP330x family of precision low dropout anyCAP voltage regulators.
The ADP3335 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 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 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 ultralow quiescent current 80 µA (typical) in light load situations.
Figure 1.
Typical Applicat...

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