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ADP3338

Part Number	ADP3338
Manufacturer	Analog Devices
Description	1A Low Dropout Regulator
Published	Mar 23, 2005
Detailed Description	High Accuracy, Ultralow IQ, 1 A, anyCAP® Low Dropout Regulator ADP3338 FEATURES High accuracy over line and load: ±0.8%...
Datasheet	ADP3338 PDF File

Overview

High Accuracy, Ultralow IQ, 1 A, anyCAP® Low Dropout Regulator ADP3338 FEATURES High accuracy over line and load: ±0.
8% @ 25°C, ±1.
4% over temperature Ultralow dropout voltage: 190 mV (typ) @ 1 A Requires only CO = 1.
0 µF for stability anyCAP is stable with any type of capacitor (including MLCC) Current and thermal limiting Low noise 2.
7 V to 8 V supply range −40°C to +85°C ambient temperature range SOT-223 package APPLICATIONS Notebook, palmtop computers SCSI terminators Battery-powered systems Bar code scanners Camcorders, cameras Home entertainment systems Networking systems DSP/ASIC supplies FUNCTIONAL BLOCK DIAGRAM IN Q1 THERMAL PROTECTION CC ADP3338 OUT R1 DRIVER gm BANDGAP REF R2 02050-001 VIN 1µF GND Figure 1.
ADP3338 IN OUT GND VOUT 1µF 02050-002 Figure 2.
Typical Application Circuit GENERAL DESCRIPTION The ADP3338 is a member of the ADP33xx family of precision, low dropout (LDO), anyCAP voltage regulators.
The ADP3338 operates with an input voltage range of 2.
7 V to 8 V and delivers a load current up to 1 A.
The ADP3338 stands out from conventional LDOs with a novel architecture and an enhanced process that offers performance advantages and higher output current than its competition.
Its patented design requires only a 1 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 ADP3338 achieves exceptional accuracy of ±0.
8% at room temperature and ±1.
4% over temperature, line, and load variations.
The dropout voltage of the ADP3338 is only 190 mV (typical) at 1 A.
The device also includes a safety current limit and thermal overload protection.
The ADP3338 has ultralow quiescent current: 110 µA (typical) in light load situations.
Rev.
B Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog D...

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