ADP5024CP-EVALZ Analog Devices, ADP5024CP-EVALZ Datasheet

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ADP5024CP-EVALZ

Manufacturer Part Number
ADP5024CP-EVALZ
Description
Power Management IC Development Tools Dual 3MHz LFCSP Evaluation Board
Manufacturer
Analog Devices
Series
ADP5024r
Datasheet

Specifications of ADP5024CP-EVALZ

Rohs
yes
Product
Evaluation Boards
Factory Pack Quantity
1
Data Sheet
FEATURES
Main input voltage range: 2.3 V to 5.5 V
Two 1200 mA buck regulators and one 300 mA LDO
24-lead, 4 mm × 4 mm LFCSP package
Regulator accuracy: ±1.8%
Factory programmable or external adjustable VOUTx
3 MHz buck operation with forced PWM and automatic
BUCK1/BUCK2: output voltage range from 0.8 V to 3.8 V
LDO: output voltage range from 0.8 V to 5.2 V
LDO: input supply voltage from 1.7 V to 5.5 V
LDO: high PSRR and low output noise
APPLICATIONS
Power for processors, ASICS, FPGAs, and RF chipsets
Portable instrumentation and medical devices
Space constrained devices
Rev. D
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.
PWM/PSM modes
1.7V TO
2.3V TO
5.5V
5.5V
OFF
OFF
C
4.7µF
0.1µF
4.7µF
AVIN
C2
C1
1µF
ON
ON
C3
AVIN
VIN1
VIN2
VIN3
Document Feedback
EN1
EN2
EN3
TYPICAL APPLICATION CIRCUIT
ADP5024
EN1
EN2
EN3
AGND
HOUSEKEEPING
(ANALOG)
BUCK1
BUCK2
MODE
MODE
LDO
Figure 1.
Regulators with One 300 mA LDO
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Technical Support
GENERAL DESCRIPTION
The
tors and one low dropout (LDO) regulator in a small, 24-lead,
4 mm × 4 mm LFCSP to meet demanding performance and
board space requirements.
The high switching frequency of the buck regulators enables tiny
multilayer external components and minimizes the board space.
When the MODE pin is set high, the buck regulators operate in
forced PWM mode. When the MODE pin is set low, the buck
regulators operate in PWM mode when the load current is above
a predefined threshold. When the load current falls below a pre-
defined threshold, the regulator operates in power save mode
(PSM), improving the light load efficiency.
The two bucks operate out of phase to reduce the input capacitor
requirement. The low quiescent current, low dropout voltage, and
wide input voltage range of the LDO extends the battery life of
portable devices. The
rejection greater than 60 dB for frequencies as high as 10 kHz
while operating with a low headroom voltage.
Regulators in the
enable pins. The default output voltages can be either externally
set in the adjustable version or factory programmable to a wide
range of preset values in the fixed voltage version.
ADP5024
VOUT1
SW1
FB1
PGND1
MODE
VOUT2
SW2
FB2
PGND2
VOUT3
FB3
Dual 3 MHz, 1200 mA Buck
combines two high performance buck regula-
L1 1µH
R2
R4
R6
L2 1µH
ADP5024
©2011–2013 Analog Devices, Inc. All rights reserved.
R1
R3
R5
PWM
ADP5024
PSM/PWM
are activated though dedicated
C5
10µF
C6
10µF
C7
1µF
LDO maintains power supply
V
1200mA
V
1200mA
V
300mA
OUT1
OUT2
OUT3
AT
AT
AT
ADP5024
www.analog.com

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ADP5024CP-EVALZ Summary of contents

Page 1

... Rev. D 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

ADP5024 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 General Description ......................................................................... 1 Typical Application Circuit ............................................................. 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 General Specifications ................................................................. 3 BUCK1 and BUCK2 Specifications ........................................... 4 LDO Specifications ...................................................................... 5 ...

Page 3

Data Sheet SPECIFICATIONS GENERAL SPECIFICATIONS 2 5 AVIN IN1 IN2 IN3 typical specifications, unless otherwise noted. Table 1. Parameter INPUT VOLTAGE RANGE THERMAL SHUTDOWN Threshold Hysteresis START-UP TIME 1 BUCK1, ...

Page 4

ADP5024 BUCK1 AND BUCK2 SPECIFICATIONS 2 5 −40°C to +125°C for minimum/maximum specifications, and T AVIN IN1 IN2 J specifications, unless otherwise noted. 1 Table 2. Parameter Symbol OUTPUT ...

Page 5

Data Sheet LDO SPECIFICATIONS 0 1.7 V (whichever is greater IN3 OUT3 specifications, and T = 25°C for typical specifications, unless otherwise noted. A Table 3. Parameter Symbol INPUT VOLTAGE ...

Page 6

ADP5024 INPUT AND OUTPUT CAPACITOR, RECOMMENDED SPECIFICATIONS T = −40°C to +125°C, unless otherwise specified. A Table 4. Parameter NOMINAL INPUT AND OUTPUT CAPACITOR RATINGS BUCK1, BUCK2 Input Capacitor Ratings BUCK1, BUCK2 Output Capacitor Ratings LDO 1 Input and Output ...

Page 7

Data Sheet ABSOLUTE MAXIMUM RATINGS Table 5. Parameter AVIN to AGND VIN1, VIN2 to AVIN PGND1, PGND2 to AGND VIN3, VOUT1, VOUT2, FB1, FB2, FB3, EN1, EN2, EN3, MODE to AGND VOUT3 to AGND SW1 to PGND1 SW2 to PGND2 ...

Page 8

ADP5024 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 7. Pin Function Descriptions Pin No. Mnemonic Description 1 AGND Analog Ground. 2 AGND Analog Ground. 3 VIN2 BUCK2 Input Supply (2 5.5 V). Connect VIN2 to VIN1 and AVIN. 4 ...

Page 9

Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS 3 25°C, unless otherwise noted. IN1 IN2 IN3 A 140 120 100 2.3 2.8 3.3 3.8 4.3 INPUT VOLTAGE (V) Figure ...

Page 10

ADP5024 100 0.001 0.01 I (A) OUT Figure 9. BUCK1 Efficiency vs. Load Current, Across Input Voltage, V ...

Page 11

Data Sheet 100 +25° –40° 0.001 0.01 I (A) OUT Figure 15. BUCK1 Efficiency vs. Load Current, Across Temperature 3 3.3 V, Automatic Mode IN ...

Page 12

ADP5024 T VOUT CH2 500mA Ω CH1 50mV M 400ns B W CH4 2.00V 28.40% Figure 21. Typical Waveforms 3 OUT1 T VOUT ...

Page 13

Data Sheet VOUT 1 I OUT 2 CH2 200mA Ω CH1 50.0mV M 20.0µs A CH2 CH4 5.00V 20.40% Figure 27. BUCK1 Response to Load Transient 3.3 ...

Page 14

ADP5024 250 200 150 –40°C 100 50 0 2.3 2.8 3.3 3.8 4.3 INPUT VOLTAGE (V) Figure 33. PMOS RDS vs. Input Voltage Across Temperature ON 1.802 –40°C +25°C 1.801 +85°C 1.800 1.799 1.798 1.797 1.796 1.795 1.794 1.793 1.792 ...

Page 15

Data Sheet 3. 0.001 0.01 0 (mA) LOAD Figure 39. LDO Output Noise vs. Load Current, Across Input Voltage 2.8 V ...

Page 16

ADP5024 THEORY OF OPERATION GM ERROR AVIN PWM COMP VIN1 I LIMIT PWM/ PSM CONTROL LOW BUCK1 CURRENT SW1 DRIVER AND ANTISHOOT THROUGH PGND1 EN1 ENBK1 ENABLE AND EN2 ENBK2 MODE EN3 CONTROL ENLDO AVIN ADP5024 VIN3 VOUT1 FB1 FB2 ...

Page 17

Data Sheet POWER MANAGEMENT UNIT The ADP5024 is a micropower management unit (microPMU) combing two step-down (buck) dc-to-dc convertors and one low dropout linear regulator (LDO). The high switching frequency and tiny 24-lead LFCSP package allow for a small power ...

Page 18

ADP5024 AVIN VOUT1 VOUT3 30µs (MIN) VOUT2 50µs (MIN) BUCK1, LDO PULL-DOWNS BUCK2 PULL-DOWN V UVLO Figure 46. Regulator Sequencing ( EN1 = EN2 = EN3 Rev Page Data Sheet V POR 30µs (MIN) 50µs ...

Page 19

Data Sheet BUCK1 AND BUCK2 The buck uses a fixed frequency and high speed current mode architecture. The buck operates with an input voltage of 2 5.5 V. The buck output voltage is set through external resistor dividers, ...

Page 20

ADP5024 desired output voltage. At this limit, the buck transitions to a mode where the PFET switch stays on 100% of the time. When the input conditions change again and the required duty cycle falls, the buck immediately restarts PWM ...

Page 21

Data Sheet APPLICATIONS INFORMATION BUCK EXTERNAL COMPONENT SELECTION Trade-offs between performance parameters such as efficiency and transient response can be made by varying the choice of external components in the applications circuit, as shown in Figure 1. Feedback Resistors For ...

Page 22

ADP5024 The peak-to-peak output voltage ripple for the selected output capacitor and inductor values is calculated using the following equation RIPPLE ≈ RIPPLE × × π × 2 × ...

Page 23

Data Sheet LDO EXTERNAL COMPONENT SELECTION Feedback Resistors For the adjustable model, the maximum value of Rb must not exceed 200 kΩ (see Figure 48). Output Capacitor The ADP5024 LDO is designed for operation with small, space- saving ceramic capacitors, ...

Page 24

ADP5024 POWER DISSIPATION AND THERMAL CONSIDERATIONS The ADP5024 is a highly efficient micropower management unit (microPMU), and, in most cases, the power dissipated in the device is not a concern. However, if the device operates at high ambient temperatures and ...

Page 25

Data Sheet Switching losses are associated with the current drawn by the driver to turn on and turn off the power devices at the switching frequency. The amount of switching power loss is given ...

Page 26

ADP5024 PCB LAYOUT GUIDELINES Poor layout can affect ADP5024 performance, causing electro- magnetic interference (EMI) and electromagnetic compatibility (EMC) problems, ground bounce, and voltage losses. Poor layout can also affect regulation and stability. A good layout is implemented using the ...

Page 27

... Part Number Vendor JMK105BJ104MV-F Taiyo-Yuden LMK105BJ105MV-F Taiyo-Yuden ECJ-0EB0J475M Panasonic-ECG JMK107BJ106MA-T Taiyo-Yuden BRC1608T1R0M Taiyo-Yuden LQM2MPN1R0NG0B Murata EPL2014-102ML Coilcraft MDT2520-CN Toko ADP5024 Analog Devices Rev Page 1µ OUT1 1200mA C5 10µF PWM PSM/PWM L2 1µ OUT2 1200mA C6 10µF V ...

Page 28

... ADP5024ACPZ-R7 −40°C to +125°C ADP5024ACPZ-1-R7 −40°C to +125°C ADP5024ACPZ-2-R7 −40°C to +125°C ADP5024CP-EVALZ RoHS Compliant Part. 2 For additional options, contact a local sales or distribution representative. BUCK1 and BUCK2: 3.3 V, 3.0 V, 2.8 V, 2.5 V, 2.3 V, 2.0 V, 1.8 V, 1.6 V, 1.5 V, 1.4 V, 1.3 V, 1.2 V, 1.1 V, 1 adjustable. LDO: 3.3 V, 3.0 V, 2.8 V, 2 1.8 V, 1.7 V, 1.6 V, 1.5 V, 1.2 V, 1.1 V, 1.0 V, 0 adjustable. ...

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