ADP125ARHZ-R7 Analog Devices Inc, ADP125ARHZ-R7 Datasheet

IC REG LDO ADJ 500MA 8MSOP

ADP125ARHZ-R7

Manufacturer Part Number
ADP125ARHZ-R7
Description
IC REG LDO ADJ 500MA 8MSOP
Manufacturer
Analog Devices Inc
Datasheets

Specifications of ADP125ARHZ-R7

Regulator Topology
Positive Adjustable
Voltage - Output
0.8 ~ 5 V
Voltage - Input
2.3 ~ 5.5 V
Voltage - Dropout (typical)
0.13V @ 500mA
Number Of Regulators
1
Current - Output
500mA (Max)
Current - Limit (min)
550mA
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-MSOP Exposed Pad, 8-HMSOP, 8-eMSOP
Primary Input Voltage
5.5V
Output Voltage Adjustable Range
800mV To 5V
Dropout Voltage Vdo
130mV
No. Of Pins
8
Output Current
500mA
Voltage Regulator Case Style
MSOP
Operating Temperature Range
-40°C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
ADP125ARHZ-R7TR
FEATURES
Input voltage supply range: 2.3 V to 5.5 V
500 mA maximum output current
Fixed and adjustable output voltage versions
1% initial accuracy
Up to 31 fixed-output voltage options available
Adjustable-output voltage range from 0.8 V to 5.0 V
Very low dropout voltage: 130 mV
Low quiescent current: 45 µA
Low shutdown current: <1 µA
Excellent PSRR performance: 60 dB at 100 kHz
Excellent load/line transient response
Optimized for small 1.0 μF ceramic capacitors
Current limit and thermal overload protection
Logic controlled enable
Compact 8-lead exposed paddle MSOP and LFCSP packages
APPLICATIONS
Digital camera and audio devices
Portable and battery-powered equipment
Automatic meter reading (AMR) meters
GPS and location management units
Medical instrumentation
Point of load power
GENERAL DESCRIPTION
The ADP124/ADP125 are low quiescent current, low dropout
linear regulators. They are designed to operate from an input
voltage between 2.3 V and 5.5 V and to provide up to 500 mA
of output current. The low 130 mV dropout voltage at a 500 mA
load improves efficiency and allows operation over a wide input
voltage range.
The low 210 μA of quiescent current with a 500 mA load makes the
ADP124/ADP125 ideal for battery-operated portable equipment.
The ADP124 is capable of 31 fixed-output voltages from 1.75 V
to 3.3 V. The ADP125 is the adjustable version of the device and
allows the output voltage to be set between 0.8 V and 5.0 V by
an external voltage divider.
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.
from 1.75 V to 3.3 V
5.5 V Input, 500 mA, Low Quiescent
Current, CMOS Linear Regulators
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
The ADP124/ADP125 are specifically designed for stable operation
with tiny 1 µF ceramic input and output capacitors to meet the
requirements of high performance, space constrained applications.
The ADP124/ADP125 have an internal soft start that gives a
constant start-up time of 350 µs. Short-circuit protection and
thermal overload protection circuits prevent damage in adverse
conditions. The ADP124/ADP125 are available in 8-lead
exposed paddle MSOP and LFCSP packages. When compared
with the standard MSOP and LFCSP packages, the exposed
paddle MSOP and LFCSP packages have lower thermal resistance
ADP125 to meet the needs of a variety of portable applications
while minimizing the rise in junction temperature.
JA
). The lower thermal resistance package allows the ADP124/
V
V
OUT
OUT
C2
= 3.3V
= 3.3V
TYPICAL APPLICATION CIRCUITS
Figure 2. ADP 125 with Adjustable Output Voltage
C2
Figure 1. ADP124 with Fixed Output Voltage
R1
R2
©2009–2010 Analog Devices, Inc. All rights reserved.
1
2
3
4
1
2
3
4
VOUT
VOUT
VOUT
SENSE
GND
VOUT
VOUT
ADJ
GND
ADP124
ADP125
ADP124/ADP125
VIN
VIN
VIN
VIN
NC
NC
EN
EN
8
7
6
5
8
7
6
5
ON
ON
OFF
OFF
www.analog.com
V
V
IN
IN
= 5.5V
= 5.5V
C1
C1

Related parts for ADP125ARHZ-R7

ADP125ARHZ-R7 Summary of contents

Page 1

FEATURES Input voltage supply range: 2 5.5 V 500 mA maximum output current Fixed and adjustable output voltage versions 1% initial accuracy fixed-output voltage options available from 1. 3.3 V Adjustable-output voltage range ...

Page 2

ADP124/ADP125 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Typical Application Circuits ............................................................ 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Recommended Capacitor Specifications ................................... 4 Absolute Maximum Ratings ............................................................ 5 Thermal Data ................................................................................ 5 ...

Page 3

SPECIFICATIONS Unless otherwise noted 0 2.3 V, whichever is greater; ADJ connected to VOUT OUT = 1.0 µ 25°C. OUT A Table 1. Parameter Symbol INPUT VOLTAGE RANGE V ...

Page 4

ADP124/ADP125 Parameter Symbol OUTPUT NOISE OUT POWER SUPPLY REJECTION RATIO PSRR ( +1V) IN OUT 1 The current from the external resistor divider network in the case of adjustable voltage output (as with the ADP125) should be subtracted ...

Page 5

ABSOLUTE MAXIMUM RATINGS Table 3. Parameter VIN to GND ADJ to GND EN to GND VOUT to GND Storage Temperature Range Operating Ambient Temperature Range Operating Junction Temperature Range Soldering Conditions Stresses above those listed under Absolute Maximum Ratings may ...

Page 6

ADP124/ADP125 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS VOUT 1 8 ADP124 VOUT 2 7 TOP VIEW VOUT SENSE 3 6 (Not to Scale) GND 4 5 NOTES CONNECT. 2. THE EXPOSED PAD MUST BE CONNECTED TO GROUND. ...

Page 7

TYPICAL PERFORMANCE CHARACTERISTICS 3.3V mA OUT OUT 3.310 3.305 3.300 3.295 I = 100µA 3.290 OUT I = 1mA OUT I = 10mA OUT 3.285 I = 100mA OUT ...

Page 8

ADP124/ADP125 0.7 0 5. 4.20 0 3.80 IN 0.2 0.1 0 –50 –25 0 ...

Page 9

I = 100µA OUT – 1mA OUT I = 10mA OUT I = 100mA –40 OUT I = 300mA OUT I = 500mA OUT –50 –60 –70 – OUT V ...

Page 10

ADP124/ADP125 I OUT 1mA TO 500mA LOAD STEP OUT 3.3V OUT 500mA Ω CH1 B CH2 50.0mV B M40.0µs A CH1 9.800% Figure 25. Load Transient Response, C ...

Page 11

THEORY OF OPERATION The ADP124/ADP125 are low quiescent current, low dropout linear regulators that operate from 2 5.5 V and can provide up to 500 mA of output current. Drawing a low 210 µA of quies- cent current ...

Page 12

ADP124/ADP125 APPLICATIONS INFORMATION CAPACITOR SELECTION Output Capacitor The ADP124/ADP125 are designed for operation with small, space-saving ceramic capacitors, but these devices can function with most commonly used capacitors as long as care is taken to ensure an appropriate effective series ...

Page 13

In this example, the worst-case temperature coefficient (TEMPCO) over −40°C to +85°C is assumed to be 15% for an X5R dielectric. The tolerance of the capacitor (TOL) is assumed to be 10%, and C is 0.94 μF at 4.2 V ...

Page 14

ADP124/ADP125 CURRENT LIMIT AND THERMAL OVERLOAD PROTECTION The ADP124/ADP125 are protected from damage due to excessive power dissipation by current and thermal overload protection circuits. The ADP124/ADP125 are designed to limit the current when the output load reaches 750 mA ...

Page 15

JUNCTION TEMPERATURE CALCULATIONS 145 135 125 115 105 TOTAL POWER DISSIPATION (W) Figure 36. Junction Temperature vs. Power Dissipation and copper area, MSOP 25°C A 145 135 125 115 105 ...

Page 16

ADP124/ADP125 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 ADP124/ADP125. However, as shown in Table 6, a point of diminishing returns eventually is ...

Page 17

OUTLINE DIMENSIONS 3.10 3.00 2.90 PIN 1 INDICATOR 0.94 0.86 0.78 0.15 0.10 0.05 COPLANARITY 0.10 Figure 45. 8-Lead Mini Small Outline Package with Exposed Pad [MINI_SO_EP] PIN 1 INDEX AREA 0.60 0.55 0.50 SEATING PLANE 3.10 2.26 3.00 2.16 ...

Page 18

... ADP124ACPZ-1.8-R7 –40°C to +125°C ADP124ACPZ-2.8-R7 –40°C to +125°C ADP124ACPZ-3.0-R7 –40°C to +125°C ADP124ACPZ-3.3-R7 –40°C to +125°C ADP125ACPZ-R7 –40°C to +125°C ADP125ARHZ-R7 –40°C to +125°C ADP125ARHZ –40°C to +125°C ADP124-3.3-EVALZ ADP125-EVALZ ADP124CP-3.3-EVALZ ADP125CP-EVALZ ADP124RHZ-REDYKIT RoHS Compliant Part. ...

Page 19

NOTES Rev Page ADP124/ADP125 ...

Page 20

ADP124/ADP125 NOTES ©2009–2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D08476-0-9/10(A) Rev Page ...

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