Datasheet

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High Accuracy anyCAP™

200 mA Low Dropout Linear Regulator

Data Sheet

ADP3303

Rev. D Document Feedback

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FEATURES

High accuracy over line and load ±0.8% at +25°C, ±1.4%

over temperature

Ultralow dropout voltage: 180 mV (typical) at 200 mA

Requires only C

= 0.47 μF for stability

anyCAP = stable with all types of capacitors (including MLCC)

3.2 V to 12 V supply range

Current and thermal limiting

Low noise

Dropout detector

Low shutdown current: < 1 μA

Thermally enhanced SOIC_N package

Excellent Line and Load Regulation Performance

APPLICATIONS

Cellular telephones

Notebook, palmtop computers

Battery powered systems

Portable instruments

Post regulator for switching supplies

Bar code scanners

FUNCTIONAL BLOCK DIAGRAMS

THERMAL

PROTECTION

BANDGAP

REF

DRIVER

ADP3303

OUT

ERR

GND

10335-001

Figure 1. Functional Block Diagram

ADP3303-5.0

OUT

ERR

330kΩ

OUT

0.47µF

OUT

=+5V

OFF

0.47µF

GND

10335-002

Figure 2. Typical Application Circuit

GENERAL DESCRIPTION

The ADP3303 is a member of the ADP3300, ADP3301, and

ADP3309 family of precision low dropout anyCAP

voltage

regulators. The ADP3303 stands out from the conventional

LDOs with a different architecture, an enhanced process, and a

different package. Its patented design requires only a 0.47 μF

output capacitor for stability. This device is insensitive to

capacitor Equivalent Series Resistance (ESR) and is stable with

any good quality capacitor, including ceramic types (MLCC) for

space restricted applications. The ADP3303 achieves

exceptional accuracy of ±0.8% at room temperature and ±1.4%

overall accuracy over temperature, line, and load regulations.

The dropout voltage of the ADP3303 is only 180 mV (typical) at

200 mA.

In addition to the architecture and process, the Analog Devices,

Inc., proprietary thermally enhanced package (Thermal Coastline)

can handle 1 W of power dissipation without external heatsink

or large copper surface on the printed circuit board (PCB).

This keeps PCB real estate to a minimum and makes the

ADP3303 very attractive for use in portable equipment.

The ADP3303 operates with a wide input voltage range from

3.2 V to 12 V and delivers a load current in excess of 200 mA.

It features an error flag that signals when the device is about to

lose regulation or when the short circuit or thermal overload

protection is activated. Other features include shutdown and

optional noise reduction capabilities. The ADP3300, ADP3301,

and ADP3309 anyCAP LDO family offers a wide range of

output voltages and output current levels:

Table 1.

ADP3300, ADP3301, and ADP3309 anyCAP LDO Family

Model Output Current Package Options

ADP3300 50 mA 6-Lead SOT-23

ADP3301 100 mA 8-Lead SOIC_N

ADP3309 100 mA 5-Lead SOT-23

anyCAP is a trademark of Analog Devices, Inc.

Downloaded from Arrow.com.

Summary of content (16 pages)

PAGE 1
FUNCTIONAL BLOCK DIAGRAMS High accuracy over line and load ±0.8% at +25°C, ±1.4% over temperature Ultralow dropout voltage: 180 mV (typical) at 200 mA Requires only CO = 0.47 μF for stability anyCAP = stable with all types of capacitors (including MLCC) 3.
PAGE 2
ADP3303 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Capacitor Selection .................................................................... 10 Applications ....................................................................................... 1 Noise Reduction ......................................................................... 10 Functional Block Diagrams .................................................
PAGE 3
Data Sheet ADP3303 SPECIFICATIONS TA = −25°C to +85°C, VIN = 7 V, CIN = 0.47 µF, COUT = 0.47 µF, unless otherwise noted. 1 Specifications subject to change without notice. Table 2.
PAGE 4
ADP3303 Data Sheet ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE Table 3. Parameter Input Supply Voltage Shutdown Input Voltage Error Flag Output Voltage Noise Bypass Pin Voltage Power Dissipation Operating Ambient Temperature Range Operating Junction Temperature Range Storage Temperature Range Lead Temperature Range (Soldering 10 sec) Vapor Phase (60 sec) Infrared (15 sec) Rating –0.3 V to +16 V –0.3 V to +16 V –0.3 V to +16 V –0.
PAGE 5
Data Sheet ADP3303 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS 8 ADP3303 IN IN TOP VIEW NR 3 (Not to Scale) 6 ERR OUT 2 GND 4 7 5 SD 10335-003 OUT 1 Figure 3. Pin Configuration Table 5. Pin Function Descriptions Pin No. 1, 2 Mnemonic OUT 3 NR 4 5 GND SD 6 7, 8 ERR IN Description Output of the Regulator. Bypass to ground with a 0.47 µF or larger capacitor. Pin 1 and Pin 2 must be connected together for proper operation. Noise Reduction Pin. Used for reduction of the output noise.
PAGE 6
ADP3303 Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS 1600 IL = 0mA 3.3005 IL = 10mA 3.3000 1400 3.2995 GROUND CURRENT (µA) IL = 100mA 3.2990 3.2985 IL = 200mA 3.2980 3.2975 1200 1000 800 IL = 0mA TO 200mA 600 4 6 5 7 8 9 10 11 12 13 14 16 15 200 10335-004 3.2970 3.3 INPUT VOLTAGE (V) 0 80 100 120 140 160 180 200 0.2 VIN = 7V VOUT = 3.2V 0.1 OUTPUT VOLTAGE (%) OUTPUT VOLTAGE (V) 60 Figure 7. Quiescent Current vs. Load Current 3.2000 3.1995 3.1990 3.1985 3.
PAGE 7
Data Sheet ADP3303 180 5.02 160 5.01 140 5.00 120 4.99 VOLTAGE (V) 100 80 25Ω, 0.47µF LOAD 4.98 60 VIN 7.5 40 7.0 0 20 0 40 60 80 100 120 140 160 180 200 OUTPUT LOAD (mA) 10335-010 20 0 20 40 80 100 120 140 160 180 200 180 200 TIME (µs) Figure 10. Dropout Voltage vs. Output Current 5 60 10335-013 INPUT-OUTPUT VOLTAGE (mV) VOUT = 5V Figure 13. Line Transient Response 5.02 VOUT = 3.3V VOUT = 5V 4 5.00 VOLTAGE (V) INPUT-OUTPUT VOLTAGE (V) 5.
PAGE 8
ADP3303 3.310 Data Sheet 4 VOUT = 3.3V 3 VOUT 3.300 2 3.295 VOLTAGE (V) CL = 10µF 3.290 0 I (VOUT) (mA) 200 VOUT 1 5 10 200 400 600 800 1000 TIME (µs) VSD 0 10335-016 0 0 5 0 VOUT –20 RIPPLE REJECTION (dB) (V) –10 3.3V 400 (mA) 300 IOUT 200 20 25 Figure 19. Turn Off VIN = 7V 0 15 TIME (µs) Figure 16. Load Transient for 10 mA to 200 mA Pulse 3.5 10 10335-019 (V) 3.305 C = 0.47µF R = 16.5Ω ON 3.3V OUTPUT 100 VOUT = 3.3V a. 0.47µF, RL = 33kΩ b. 0.
PAGE 9
Data Sheet ADP3303 THEORY OF OPERATION The new anyCAP LDO ADP3303 uses a single control loop for regulation and reference functions. The output voltage is sensed by a resistive voltage divider consisting of R1 and R2, which is varied to provide the available output voltage options. Feedback is taken from this network by way of a series diode (D1) and a second resistor divider (R3 and R4) to the input of an amplifier.
PAGE 10
ADP3303 Data Sheet APPLICATION INFORMATION CAPACITOR SELECTION CALCULATING JUNCTION TEMPERATURE Output Capacitors Device power dissipation is calculated as follows: As with any micropower device, output transient response is a function of the output capacitance. The ADP3303 is stable with a wide range of capacitor values, types and ESR. A capacitor as low as 0.47 µF is all that is needed for stability; larger capacitors can be used if high output current surges are anticipated.
PAGE 11
Data Sheet ADP3303 Once set, the hysteresis of the ERR flag keeps the output low until a small margin of operating range is restored either by raising the supply voltage or reducing the load. COPPER LEAD-FRAME 1 8 2 7 SHUTDOWN MODE Applying a TTL high signal to the shutdown (SD) pin, or tying it to the input pin, turns the output on. Pulling SD down to 0.3 V or below, or tying it to ground, turns the output off. In shutdown mode, quiescent current is reduced to much less than 1 µA.
PAGE 12
ADP3303 Data Sheet APPLICATION CIRCUITS CROSSOVER SWITCH MJE253* VIN = 6V TO 8V The circuit in Figure 25 shows that two ADP3303s can be used to form a mixed supply voltage system. The output switches between two different levels selected by an external digital input. Output voltages can be any combination of voltages from the Ordering Guide. VOUT = 5V AT 1A R1 50Ω C1 47µF IN OUT ERR SD OUT IN VOUT = 5V/3.3V GND ADP3303-5.
PAGE 13
Data Sheet ADP3303 OUTLINE DIMENSIONS 5.00 (0.1968) 4.80 (0.1890) 1 5 4 1.27 (0.0500) BSC 0.25 (0.0098) 0.10 (0.0040) COPLANARITY 0.10 SEATING PLANE 6.20 (0.2441) 5.80 (0.2284) 0.50 (0.0196) 0.25 (0.0099) 1.75 (0.0688) 1.35 (0.0532) 0.51 (0.0201) 0.31 (0.0122) 45° 8° 0° 0.25 (0.0098) 0.17 (0.0067) 1.27 (0.0500) 0.40 (0.
PAGE 14
ADP3303 Data Sheet NOTES Rev. D | Page 14 of 16 Downloaded from Arrow.com.
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Data Sheet ADP3303 NOTES Rev. D | Page 15 of 16 Downloaded from Arrow.com.
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ADP3303 Data Sheet NOTES ©2014–2017 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D10335-0-8/17(D) Rev. D | Page 16 of 16 Downloaded from Arrow.com.