ADP3335ARM-2.5-RL7 Analog Devices, ADP3335ARM-2.5-RL7 Datasheet

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ADP3335ARM-2.5-RL7

Manufacturer Part Number
ADP3335ARM-2.5-RL7
Description
ic reg ldo 2.5v 500ma 8-msop tr...
Manufacturer
Analog Devices
Datasheet

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FEATURES
High accuracy over line and load: ±0.9% @ 25°C,
Ultralow dropout voltage: 200 mV (typ) @ 500 mA
Requires only C
anyCAP = stable with any type of capacitor
Current and thermal limiting
Low noise
Low shutdown current: < 10 nA (typ)
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
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)
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
±1.8% over temperature
(Including MLCC)
O
= 1.0 µF for stability
High Accuracy, Ultralow I
anyCAP
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.326.8703
SD
IN
PROTECTION
V
THERMAL
IN
FUNCTIONAL BLOCK DIAGRAM
®
1µF
C
IN
Low Dropout Regulator
Figure 2. Typical Application Circuit
OFF
+
© 2004 Analog Devices, Inc. All rights reserved.
8
7
ON
DRIVER
IN
IN
GND
SD
ADP3335
Q1
6
Figure 1.
NR
CC
5
OUT
OUT
OUT
GND
4
3
2
1
gm
+
ADP3335
BANDGAP
1µF
C
Q
OUT
ADP3335
, 500 mA,
REF
www.analog.com
V
OUT
+
R1
R1
R2
OUT
NR

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ADP3335ARM-2.5-RL7 Summary of contents

Page 1

... Rev. A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices ...

Page 2

ADP3335 TABLE OF CONTENTS Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 4 Pin Configuration and Function Descriptions............................. 5 Typical Performance Characteristics ............................................. 6 Theory of Operation ........................................................................ 9 Application Information................................................................ 10 Output Capacitor Selection....................................................... 10 Input Bypass Capacitor.............................................................. 10 REVISION HISTORY 1/04 ...

Page 3

SPECIFICATIONS All limits at temperature extremes are guaranteed via correlation using standard statistical quality control (SQC) methods. Ambient temperature of 85°C corresponds to a junction temperature of 125°C under pulsed full-load test conditions. Application stable with no load ...

Page 4

ADP3335 ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Input Supply Voltage Shutdown Input Voltage Power Dissipation Operating Ambient Temperature Range Operating Junction Temperature Range θ , 2-layer MSOP-8 JA θ , 4-layer MSOP-8 JA θ , 2-layer LFCSP-8 JA θ , ...

Page 5

PIN CONFIGURATIONS AND FUNCTIONAL DESCRIPTIONS Table 3. Pin Function Descriptions Pin No. Mnemonic Function OUT Output of the Regulator. Bypass to ground with a 1.0 µF or larger capacitor. All pins must be connected together for proper ...

Page 6

ADP3335 TYPICAL PERFORMANCE CHARACTERISTICS T = 25°C, unless otherwise noted A 2.202 2.201 2.200 2.199 150mA 2.198 2.197 2.196 300mA 2.195 500mA 2.194 INPUT VOLTAGE (V) Figure 5. Line Regulation Output Voltage ...

Page 7

OUTPUT ( mA) Figure 11. Dropout Voltage vs. Output Current 3.0 2.5 2.0 1.5 1.0 0 TIME ( sec) Figure 12. Power-Up/Power-Down 1µF ...

Page 8

ADP3335 2.3 2.2 2.1 400 200 0 200 400 600 TIME (µs) Figure 17. Load Transient Response 2.2 0 800mΩ FULL SHORT 3 SHORT 200 400 600 TIME (µs) Figure 18. Short-Circuit Current 3 1µF 2 10µF ...

Page 9

THEORY OF OPERATION The ADP3335 uses a single control loop for regulation and reference functions. The output voltage is sensed by a resistive voltage divider, R1 and R2, which is varied to provide the available output voltage option. Feedback is ...

Page 10

ADP3335 APPLICATION INFORMATION OUTPUT CAPACITOR SELECTION As with any micropower device, output transient response is a function of the output capacitance. The ADP3335 is stable over a wide range of capacitor values, types, and ESR (anyCAP). A capacitor as low ...

Page 11

PRINTED CIRCUIT BOARD LAYOUT CONSIDERATIONS All surface-mount packages rely on the traces of the PC board to conduct heat away from the package. Use the following general guidelines when designing printed circuit boards to improve both electrical and thermal performance. ...

Page 12

ADP3335 OUTLINE DIMENSIONS INDICATOR 0.90 0.85 0.80 SEATING 3.00 0.60 MAX BSC SQ 0.45 8 PIN 1 2.75 TOP BSC SQ VIEW 0.50 BSC 5 0.25 MIN 0.80 MAX 12° MAX 0.65 TYP 0.05 MAX 0.02 NOM 0.30 0.20 REF ...

Page 13

... ADP3335ARM-1.8–RL7 1.8 V ADP3335ARM-2.5–RL 2.5 V ADP3335ARM-2.5–RL7 2 ADP3335ARMZ-2.5–RL7 2.5 V ADP3335ARM-2.85–RL 2.85 V ADP3335ARM-2.85–R7 2.85 V ADP3335ARMZ-2.85–R7 2 2.85 V ADP3335ARM-3.3–RL 3 ADP3335ARMZ-3.3–RL 3.3 V ADP3335ARM-3.3–RL7 3.3 V ADP3335ARM-5–REEL 5 V ADP3335ARM-5–REEL7 5 V ADP3335ACP-1.8–RL 1.8 V ADP3335ACP-1.8–RL7 1.8 V ADP3335ACP-2.5–RL 2.5 V ADP3335ACP-2.5–RL7 2.5 V ADP3335ACP-2.85–R7 2.85 V ADP3335ACP-3.3–RL 3.3 V ADP3335ACP-3.3– ...

Page 14

ADP3335 NOTES Rev Page ...

Page 15

NOTES Rev Page ADP3335 ...

Page 16

... ADP3335 NOTES © 2004 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners C00147-0-1/04(A) Rev Page ...

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