Datasheet

ManualsBrandsANALOG DEVICES ManualsPMICsPMIC - LDO voltage regulator Positive, fixed MSOP 8

500 mA, Low Dropout,

CMOS Linear Regulator

ADP1715/ADP1716

Rev. 0

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FEATURES

Maximum output current: 500 mA

Input voltage range: 2.5 V to 5.5 V

Low shutdown current: <1 μA

Low dropout voltage:

250 mV @ 500 mA load

50 mV @ 100 mA load

Initial accuracy: ±1%

Accuracy over line, load, and temperature: ±3%

16 fixed output voltage options with soft start:

0.75 V to 3.3 V (ADP1715)

Adjustable output voltage option: 0.8 V to 5.0 V

(ADP1715 Adjustable)

16 fixed output voltage options with tracking:

0.75 V to 3.3 V (ADP1716)

Stable with small 2.2 μF ceramic output capacitor

Excellent load/line transient response

Current limit and thermal overload protection

Logic controlled enable

8-lead thermally enhanced MSOP package

APPLICATIONS

Notebook computers

Memory components

Telecommunications equipment

Network equipment

DSP/FPGA/μP supplies

Instrumentation equipment/data acquisition systems

TYPICAL APPLICATION CIRCUITS

GND

OUT

ADP1715

= 5V

OUT

= 3.3V

10nF2.2µF

2.2µF

06110-001

Figure 1. ADP1715 with Fixed Output Voltage, 3.3 V

GND

OUT

ADJ

ADP1715

ADJUSTABLE

= 5V

OUT

= 0.8(1 + R1/R2)

2.2µF

06110-002

Figure 2. ADP1715 with Adjustable Output Voltage, 0.8 V to 5.0 V

GND

OUT

TRK

DP1716

= 5V

TRK

= 0V TO 5V

OUT

2.2µF

12345

OUT

(V)

TRK

(V)

06110-003

Figure 3. ADP1716 with Output Voltage Tracking

GENERAL DESCRIPTION

The ADP1715/ADP1716 are low dropout, CMOS linear

regulators that operate from 2.5 V to 5.5 V and provide up to

500 mA of output current. Using an advanced proprietary

architecture, they provide high power supply rejection and

achieve excellent line and load transient response with just a

small 2.2 μF ceramic output capacitor.

Three versions of this part are available, one with fixed

output voltage options and variable soft start (ADP1715),

one with adjustable output voltage and fixed soft start

(ADP1715 Adjustable), and one with voltage tracking in

fixed output voltage options (ADP1716). The fixed output

voltage options are internally set to one of sixteen values

between 0.75 V and 3.3 V; the adjustable output voltage can

be set to any value between 0.8 V and 5.0 V by an external

voltage divider connected from OUT to ADJ. The variable

soft start uses an external capacitor at SS to control the

output voltage ramp. Tracking limits the output voltage to

the at-or-below voltage at the TRK pin.

The ADP1715/ADP1716 are available in 8-lead thermally

enhanced MSOP packages, making them not only a very

compact solution but also providing excellent thermal

performance for applications requiring up to 500 mA of output

current in a small, low profile footprint.

Summary of content (20 pages)

PAGE 1
500 mA, Low Dropout, CMOS Linear Regulator ADP1715/ADP1716 FEATURES TYPICAL APPLICATION CIRCUITS ADP1715 VIN = 5V 2.2µF VOUT = 3.3V 2.2µF EN GND 8 2 IN GND 7 3 OUT GND 6 4 SS GND 5 10nF Figure 1. ADP1715 with Fixed Output Voltage, 3.3 V ADP1715 ADJUSTABLE 2.2µF R1 VOUT = 0.8(1 + R1/R2) 1 EN GND 8 2 IN GND 7 3 OUT GND 6 4 ADJ GND 5 06110-002 VIN = 5V R2 2.2µF Figure 2. ADP1715 with Adjustable Output Voltage, 0.8 V to 5.0 V ADP1716 VIN = 5V 2.2µF VOUT 2.
PAGE 2
ADP1715/ADP1716 TABLE OF CONTENTS Features .............................................................................................. 1 Track Mode (ADP1716) ............................................................ 11 Applications....................................................................................... 1 Enable Feature ............................................................................ 11 Typical Application Circuits..........................................................
PAGE 3
ADP1715/ADP1716 SPECIFICATIONS VIN = (VOUT + 0.5 V) or 2.5 V (whichever is greater), IOUT = 10 mA, CIN = COUT = 2.2 μF, TA = 25°C, unless otherwise noted. Table 1.
PAGE 4
ADP1715/ADP1716 ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE Table 2. Parameter IN to GND OUT to GND EN to GND SS/ADJ/TRK to GND Storage Temperature Range Operating Junction Temperature Range Soldering Conditions Rating –0.3 V to +6 V –0.3 V to IN –0.3 V to +6 V –0.3 V to +6 V –65°C to +150°C –40°C to +125°C JEDEC J-STD-020 Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device.
PAGE 5
ADP1715/ADP1716 OUT 3 SS 4 ADP1715 FIXED TOP VIEW (Not to Scale) 8 GND EN 1 7 GND IN 2 6 GND OUT 3 5 GND ADJ 4 Figure 4. 8-Lead MSOP (RM-Suffix) ADP1715 ADJUSTABLE TOP VIEW (Not to Scale) 8 GND EN 1 7 GND IN 2 6 GND OUT 3 5 GND 06110-005 IN 2 06110-004 EN 1 Figure 5. 8-Lead MSOP (RM-Suffix) TRK 4 8 GND ADP1716 7 GND TOP VIEW (Not to Scale) 6 GND 5 GND 06110-006 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS Figure 6. 8-Lead MSOP (RM-Suffix) Table 4.
PAGE 6
ADP1715/ADP1716 TYPICAL PERFORMANCE CHARACTERISTICS VIN = 3.8 V, IOUT = 10 mA, CIN = 2.2 μF, COUT = 2.2 μF, TA = 25°C, unless otherwise noted. 500 3.364 3.354 450 3.344 ILOAD = 100mA ILOAD = 10mA 3.314 350 IGND (µA) ILOAD = 100µA 3.304 3.294 3.284 3.274 ILOAD = 360mA 3.254 200 ILOAD = 100mA 06110-007 3.234 –5 25 ILOAD = 10mA 100 ILOAD = 250mA 3.244 –40 ILOAD = 250mA 250 150 ILOAD = 500mA 3.264 ILOAD = 360mA 300 85 ILOAD = 100µA 50 0 125 –40 –5 TJ (°C) 25 85 06110-010 3.
PAGE 7
ADP1715/ADP1716 350 5V/DIV 1 2 SWITCH SIGNAL TO CHANGE OUTPUT LOAD FROM 25mA TO 475mA 200 150 100 VIN = 5V VOUT = 3.3V CIN = 2.2µF COUT = 2.2µF 06110-013 50 VOUT 0 0.1 1 10 1000 100 ILOAD (mA) 06110-034 VDROPOUT (mV) 250 50mV/DIV 300 TIME (10µs/DIV) Figure 13. Dropout Voltage vs. Load Current Figure 16. Load Transient Response 3.35 1 2 SWITCH SIGNAL TO CHANGE OUTPUT LOAD FROM 25mA TO 475mA 3.
PAGE 8
18 0 16 –10 14 –20 VRIPPLE = 50mV p-p VIN = 5V VOUT = 0.75V COUT = 2.2µF ILOAD = 10mA –30 12 PSRR (dB) 10 8 –40 –50 –60 6 –70 4 06110-018 –80 2 0 0 5 10 15 20 06110-020 RAMP-UP TIME (ms) ADP1715/ADP1716 –90 –100 10 25 100 1k CSS (nF) –10 –20 –40 –40 PSRR (dB) –30 –50 –60 –60 –70 –80 –80 –90 100 1k 10k 100k 1M 10M FREQUENCY (Hz) VRIPPLE = 50mV p-p VIN = 5V VOUT = 0.75V COUT = 2.
PAGE 9
ADP1715/ADP1716 0 –20 –10 –20 PSRR (dB) –30 –40 –50 –50 –60 –70 –70 –80 –90 10 100 1k 10k 100k 1M 10M FREQUENCY (Hz) –20 VRIPPLE = 50mV p-p VIN = 5V VOUT = 3.3V COUT = 2.2µF ILOAD = 10mA –30 –40 –50 –60 06110-019 –70 –80 –90 10 100 1k 10k 100k –90 10 100 1k 10k 100k 1M Figure 25. Power Supply Rejection Ratio vs. Frequency 0 –10 –80 FREQUENCY (Hz) Figure 23. Power Supply Rejection Ratio vs.
PAGE 10
ADP1715/ADP1716 THEORY OF OPERATION The ADP1715/ADP1716 are low dropout, CMOS linear regulators that use an advanced, proprietary architecture to provide high power supply rejection ratio (PSRR) and excellent line and load transient response with just a small 2.2 μF ceramic output capacitor. Both devices operate from a 2.5 V to 5.5 V input rail and provide up to 500 mA of output current. Supply current in shutdown mode is typically 100 nA.
PAGE 11
ADP1715/ADP1716 ADJUSTABLE OUTPUT VOLTAGE (ADP1715 ADJUSTABLE) ENABLE FEATURE The ADP1715 adjustable version can have its output voltage set over a 0.8 V to 5.0 V range. The output voltage is set by connecting a resistive voltage divider from OUT to ADJ. The output voltage is calculated using the equation VOUT = 0.8 V (1 + R1/R2) The ADP1715/ADP1716 use the EN pin to enable and disable the OUT pin under normal operating conditions.
PAGE 12
ADP1715/ADP1716 APPLICATION INFORMATION CAPACITOR SELECTION Input and Output Capacitor Properties Output Capacitor The ADP1715/ADP1716 are designed for operation with small, space-saving ceramic capacitors, but they will function with most commonly used capacitors as long as care is taken about the effective series resistance (ESR) value. The ESR of the output capacitor affects stability of the LDO control loop. A minimum of 2.
PAGE 13
ADP1715/ADP1716 140 DO NOT OPERATE ABOVE THIS POINT 120 MAX TJ 100 TJ (°C) should be aware of the parameters that contribute to junction temperature changes. These parameters include ambient temperature, power dissipation in the power device, and thermal resistances between the junction and ambient air (θJA). The θJA number is dependent on the package assembly compounds used and the amount of copper to which the GND pins of the package are soldered to on the PCB.
PAGE 14
ADP1715/ADP1716 140 140 DO NOT OPERATE ABOVE THIS POINT DO NOT OPERATE ABOVE THIS POINT 120 120 MAX TJ 100 80 80 TJ (°C) 60 40 60 40 50mA 100mA 250mA 360mA 500mA (LOAD CURRENT) 0 0 1 2 3 4 20 1mA 10mA 5 0 500mA (LOAD CURRENT) 1 2 3 4 5 VIN – VOUT (V) Figure 37. 0 mm2 of PCB Copper, TA = 25°C Figure 40.
PAGE 15
ADP1715/ADP1716 140 PRINTED CIRCUIT BOARD LAYOUT CONSIDERATIONS DO NOT OPERATE ABOVE THIS POINT 120 MAX TJ The 8-lead MSOP package has the four GND pins fused together internally, which enhances its thermal characteristics. Heat dissipation from the package is increased by connecting as much copper as possible to the four GND pins of the ADP1715/ ADP1716.
PAGE 16
ADP1715/ADP1716 OUTLINE DIMENSIONS 3.20 3.00 2.80 8 3.20 3.00 2.80 1 5 5.15 4.90 4.65 4 PIN 1 0.65 BSC 0.95 0.85 0.75 1.10 MAX 0.15 0.00 0.38 0.22 COPLANARITY 0.10 0.23 0.08 8° 0° SEATING PLANE COMPLIANT TO JEDEC STANDARDS MO-187-AA Figure 47. 8-Lead Mini Small Outline Package [MSOP] (RM-8) Dimensions show in millimeters Rev. 0 | Page 16 of 20 0.80 0.60 0.
PAGE 17
ADP1715/ADP1716 ORDERING GUIDE Model ADP1715ARMZ-0.75R71 ADP1715ARMZ-0.8-R71 ADP1715ARMZ-0.85R71 ADP1715ARMZ-0.9-R71 ADP1715ARMZ-0.95R71 ADP1715ARMZ-1.0-R71 ADP1715ARMZ-1.05R71 ADP1715ARMZ-1.1-R71 ADP1715ARMZ-1.15R71 ADP1715ARMZ-1.2-R71 ADP1715ARMZ-1.3-R71 ADP1715ARMZ-1.5-R71 ADP1715ARMZ-1.8-R71 ADP1715ARMZ-2.5-R71 ADP1715ARMZ-3.0-R71 ADP1715ARMZ-3.3-R71 ADP1715ARMZ-R71 ADP1716ARMZ-0.75R7 1 ADP1716ARMZ-0.8-R71 ADP1716ARMZ-0.85R71 ADP1716ARMZ-0.9-R71 ADP1716ARMZ-0.95R71 ADP1716ARMZ-1.0-R71 ADP1716ARMZ-1.
PAGE 18
ADP1715/ADP1716 NOTES Rev.
PAGE 19
ADP1715/ADP1716 NOTES Rev.