ADP222ACPZ-1218-R7 AD [Analog Devices], ADP222ACPZ-1218-R7 Datasheet

ADP222ACPZ-1218-R7

Manufacturer Part Number

ADP222ACPZ-1218-R7

Description

Dual, 300 mA Output, Low Noise

Manufacturer

AD [Analog Devices]

Datasheet

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Data Sheet

FEATURES

Input voltage range: 2.5 V to 5.5 V

Small, 8-lead, 2 mm × 2 mm LFCSP package

Initial accuracy: ±1%

High PSRR: 70 dB at 10 kHz, 60 dB at 100 kHz, 40 dB at 1 MHz

Low noise: 27 µV rms at V

Excellent transient response

Low dropout voltage: 170 mV at 300 mA load

65 µA typical ground current at no load, both LDOs enabled

Fixed output voltage from 0.8 V to 3.3 V (ADP222/ADP224)

Adjustable output voltage range from 0.5 V to 5.0 V

Quick output discharge

Overcurrent and thermal protection

APPLICATIONS

Portable and battery-powered equipment

Portable medical devices

Post dc-to-dc regulation

Point of sale terminals

Credit card readers

Automatic meter readers

Wireless network equipment

GENERAL DESCRIPTION

The 300 mA, adjustable dual output

fixed dual output

noise, low quiescent current, and low dropout voltage in a

voltage regulator that is ideally suited for wireless applications

with demanding performance and board space requirements.

The

from 0.8V to 3.3V. The adjustable output

be set to output voltages from 0.5 V to 5.0 V. The low quiescent

current, low dropout voltage, and wide input voltage range of

the

of portable devices.

The

supply rejection greater than 60 dB for frequencies as high as

Rev. B

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.

(ADP223/ADP225)

ADP222/ADP223/ADP224/ADP225

ADP222/ADP224

ADP222/ADP223/ADP224/ADP225

ADP222/ADP224

are available with fixed outputs voltages

(QOD)—ADP224/ADP225

OUT

= 1.2 V, 50 µV rms at V

ADP223/ADP225

combine high PSRR, low

extend the battery life

ADP223/ADP225

maintain power

OUT

and

= 2.8 V

may

ADP222/ADP223/ADP224/ADP225

Dual, 300 mA Output, Low Noise,

High PSRR Voltage Regulators

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

100 kHz while operating with a low headroom voltage. The

ADP222/ADP223/ADP224/ADP225

performance than competing LDOs without the need for a

noise bypass capacitor. Overcurrent and thermal protection

circuitry prevent damage in adverse conditions.

The

ADP223, respectively, but with the addition of a quick output

discharge (QOD) feature.

The

small 8-lead, 2 mm × 2 mm LFCSP package and are stable with

tiny 1 µF, ±30% ceramic output capacitors, resulting in the smallest

possible board area for a wide variety of portable power needs.

ADP224

ADP222/ADP223/ADP224/ADP225

OFF

= 4.2V

+ C1

TYPICAL APPLICATION CIRCUITS

1µF

and

ADP225

EN1

EN2

GND

ADJ2

EN1

EN2

GND

SENSE2

Figure 1.

Figure 2.

ADP223/

ADP222/

ADP225

ADP224

are identical to the

SENSE1

ADP223/ADP225

ADP222/ADP224

VOUT1

VOUT2

VOUT1

VOUT2

ADJ1

VIN

offer much lower noise

are available in a

VOUT1 = 2.8V

VOUT2 = 3.3V

+ C2

ADP222

VOUT2 = 2.0V

VOUT1 = 1.5V

1µF

www.analog.com

+ C3

1µF

and

Related parts for ADP222ACPZ-1218-R7

ADP222ACPZ-1218-R7 Summary of contents

Page 1

Data Sheet FEATURES Input voltage range: 2 5.5 V Small, 8-lead × LFCSP package Initial accuracy: ±1% High PSRR kHz 100 kHz MHz ...

ADP222/ADP223/ADP224/ADP225 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Typical Application Circuits ............................................................ 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Input and Output Capacitor, Recommended Specifications .. 4 Absolute Maximum Ratings ............................................................ 5 Thermal ...

Page 3

Data Sheet SPECIFICATIONS 0 2.5 V (whichever is greater), EN1 = EN2 = V IN OUT unless otherwise noted. Table 1. Parameter Symbol INPUT VOLTAGE RANGE V OPERATING SUPPLY CURRENT I GND WITH BOTH ...

Page 4

ADP222/ADP223/ADP224/ADP225 Parameter Symbol OUTPUT NOISE OUT POWER SUPPLY REJECTION RATIO PSRR 1 Accuracy when VOUTx is connected directly to ADJx or SENSEx. When the VOUTx voltage is set by external feedback resistors, the absolute accuracy in adjust mode depends on ...

Page 5

Data Sheet ABSOLUTE MAXIMUM RATINGS Table 3. Parameter VIN to GND ADJ1, ADJ2, VOUT1, VOUT2 to GND EN1, EN2 to GND Storage Temperature Range Operating Junction Temperature Range Soldering Conditions Stresses above those listed under Absolute Maximum Ratings may cause ...

Page 6

ADP222/ADP223/ADP224/ADP225 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS ADP222/ ADP224 1 EN1 SENSE1 2 EN2 VOUT1 3 GND VIN 4 SENSE2 VOUT2 NOTES 1. CONNECT EXPOSED PAD TO GND. Figure 3. ADP222/ADP224 Pin Configuration Table 5. Pin Function Descriptions Pin No. ADP222/ADP224 ...

Page 7

Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS 3 2 OUT1 OUT2 3.40 LOAD = 100µA 3.38 LOAD = 1mA LOAD = 10mA 3.36 LOAD = 50mA LOAD = 100mA 3.34 ...

Page 8

ADP222/ADP223/ADP224/ADP225 1.820 1.815 1.810 1.805 1.800 1.795 1.790 1.785 1.780 0.01 0 (mA) LOAD Figure 11. Output Voltage vs. Load Current, V OUTx 1.220 1.215 1.210 1.205 1.200 1.195 1.190 1.185 1.180 0.01 0 ...

Page 9

Data Sheet 140 120 100 –40 –5 25 JUNCTION TEMPERATURE (°C) Figure 17. Ground Current vs. Junction Temperature, Single Output, ADP222/ADP224 300 LOAD = 100µA LOAD = 50mA LOAD = 1mA LOAD = 100mA LOAD ...

Page 10

ADP222/ADP223/ADP224/ADP225 3.40 3.38 3.36 3.34 3.32 3.30 3.28 3.26 3.24 3.22 3.20 –40 –5 25 JUNCTION TEMPERATURE (°C) Figure 23. Output Voltage vs. Junction Temperature, V ADP223/ADP225 2.85 2.84 2.83 2.82 2.81 2.80 2.79 2.78 2.77 2.76 2.75 –40 –5 ...

Page 11

Data Sheet 1.820 1.815 1.810 1.805 1.800 1.795 1.790 1.785 1.780 0 (mA) LOAD Figure 29. Output Voltage vs. Load Current, V OUTx 1.220 1.215 1.210 1.205 1.200 1.195 1.190 1.185 1.180 0 (mA) ...

Page 12

ADP222/ADP223/ADP224/ADP225 300 250 200 150 100 50 0 –40 –5 25 JUNCTION TEMPERATURE (°C) Figure 35. Ground Current vs. Junction Temperature, Single Output, Includes 100 µA for Output Divider, 500 450 400 350 300 250 200 150 100 50 0 ...

Page 13

Data Sheet 140 120 100 (mA) LOAD Figure 41. Dropout Voltage vs. Load Current, V 160 140 120 100 (mA) LOAD Figure 42. Dropout ...

Page 14

ADP222/ADP223/ADP224/ADP225 50mV RIPPLE V = 4.3V – 3.3V OUT C = 1µF OUT –20 –30 –40 –50 –60 –70 –80 –90 –100 10 100 1k 10k FREQUENCY (Hz) Figure 47. Power Supply Rejection Ratio ...

Page 15

Data Sheet 50mV RIPPLE V = 2.5V – 1.8V OUT C = 1µF –20 OUT –30 –40 –50 –60 –70 –80 –90 –100 10 100 1k 10k FREQUENCY (Hz) Figure 53. Power Supply Rejection ...

Page 16

ADP222/ADP223/ADP224/ADP225 LOAD CURRENT ON V OUT1 OUT1 V OUT2 3 CH1 200mA Ω B CH2 50mV B M10µs A CH1 CH3 10.0mV T W Figure 59. Transient Load Response 1 ...

Page 17

Data Sheet THEORY OF OPERATION The ADP222/ADP223/ADP224/ADP225 current, fixed and adjustable dual output, low dropout linear regulators that operate from 2 5.5 V and provide up to 300 mA of current from each output. Drawing a low 300 ...

Page 18

ADP222/ADP223/ADP224/ADP225 APPLICATIONS INFORMATION CAPACITOR SELECTION Output Capacitor The ADP222/ADP223/ADP224/ADP225 operation with small, space-saving ceramic capacitors but function with most commonly used capacitors as long as care is taken with regard to the effective series resistance (ESR) value. The ESR of ...

Page 19

Data Sheet ENABLE FEATURE The ADP222/ADP223/ADP224/ADP225 enable and disable the VOUTx pins under normal operating conditions. Figure 67 shows a rising voltage on ENx crossing the active threshold, where V turns on. When a falling OUTx voltage on ENx crosses ...

Page 20

ADP222/ADP223/ADP224/ADP225 4.0 3.5 ENABLE QOD 3.0 OUT V , WITH QOD OUT 2.5 2.0 1.5 1.0 0 2000 4000 6000 TIME (µs) Figure 71. Typical Turn-Off Time with and Without QOD Function CURRENT LIMIT AND ...

Page 21

Data Sheet The junction temperature of the ADP222/ADP223/ADP224/ ADP225 can be calculated × θ where the ambient temperature the power dissipation in the die, ...

Page 22

ADP222/ADP223/ADP224/ADP225 PRINTED CIRCUIT BOARD LAYOUT CONSIDERATIONS Heat dissipation from the package can be improved by increasing the amount of copper attached to the pins of the ADP222/ADP223/ADP224/ADP225. However, as listed in Table 6, a point of diminishing returns is eventually ...

Page 23

... OUTLINE DIMENSIONS PIN 1 INDEX AREA 0.60 0.55 0.50 SEATING PLANE ORDERING GUIDE Model Temperature Range 1 ADP222ACPZ-1218-R7 −40°C to +125°C ADP222ACPZ-1228-R7 −40°C to +125°C ADP222ACPZ-1233-R7 −40°C to +125°C ADP222ACPZ-1528-R7 −40°C to +125°C ADP222ACPZ-1533-R7 −40°C to +125°C ADP222ACPZ-1815-R7 −40°C to +125°C ADP222ACPZ-1825-R7 − ...

Page 24

ADP222/ADP223/ADP224/ADP225 Model 1 Temperature Range ADP223ACPZ-R7 −40°C to +125°C ADP223CP-EVALZ ADP225CP-EVALZ RoHS Compliant Part. ©2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. Output Voltage (V) VOUT1 VOUT2 ...

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