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Analog Devices - 5-Channel Integrated Power Solution

Numéro de référence ADP5052
Description 5-Channel Integrated Power Solution
Fabricant Analog Devices 
Logo Analog Devices 





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ADP5052 fiche technique
Data Sheet
5-Channel Integrated Power Solution with Quad
Buck Regulators and 200 mA LDO Regulator
ADP5052
FEATURES
Wide input voltage range: 4.5 V to 15 V
±1.5% output accuracy over full temperature range
250 kHz to 1.4 MHz adjustable switching frequency
Adjustable/fixed output options via factory fuse
Power regulation
Channel 1 and Channel 2: programmable 1.2 A/2.5 A/4 A
sync buck regulators with low-side FET driver
Channel 3 and Channel 4: 1.2 A sync buck regulators
Channel 5: 200 mA low dropout (LDO) regulator
Always alive 5.1 V LDO supply for tiny load demand
Single 8 A output (Channel 1 and Channel 2 operated
in parallel)
Precision enable with 0.8 V accurate threshold
Active output discharge switch
FPWM or automatic PWM/PSM mode selection
Frequency synchronization input or output
Optional latch-off protection on OVP/OCP failure
Power-good flag on selected channels
UVLO, OCP, and TSD protection
48-lead, 7 mm × 7 mm LFCSP package
−40°C to +125°C junction temperature
APPLICATIONS
Small cell base stations
FPGA and processor applications
Security and surveillance
Medical applications
GENERAL DESCRIPTION
The ADP5052 combines four high performance buck regulators
and one 200 mA low dropout (LDO) regulator in a 48-lead LFCSP
package that meets demanding performance and board space
requirements. The device enables direct connection to high input
voltages up to 15 V with no preregulators.
Channel 1 and Channel 2 integrate high-side power MOSFETs and
low-side MOSFET drivers. External NFETs can be used in low-side
power devices to achieve an efficiency optimized solution and
deliver a programmable output current of 1.2 A, 2.5 A, or 4 A.
Combining Channel 1 and Channel 2 in a parallel configuration
can provide a single output with up to 8 A of current.
TYPICAL APPLICATION CIRCUIT
C1
4.5V TO 15V
VREG
VDD
C0
PVIN1
C2
COMP1
EN1
SS12
PVIN2
C5
COMP2
EN2
PWRGD
PVIN3
C8
COMP3
EN3
SS34
ADP5052
INT VREG
100mA
OSCILLATOR
CHANNEL 1
BUCK REGULATOR
(1.2A/2.5A/4A)
VREG
CHANNEL 2
BUCK REGULATOR
(1.2A/2.5A/4A)
VREG
SYNC/MODE
RT
FB1
BST1
SW1
C3
DL1 Q1
PGND RILIM1
DL2 RILIM2
SW2
Q2
BST2
FB2
C6
L1 VOUT1
C4
VOUT2
L2
C7
CHANNEL 3
BUCK REGULATOR
(1.2A)
BST3
SW3
C9
FB3
PGND3
BST4
L3 VOUT3
C10
http://www.DataSheet4U.net/
PVIN4
C11
COMP4
EN4
1.7V TO 5.5V PVIN5
C14 EN5
CHANNEL 4
BUCK REGULATOR
(1.2A)
CHANNEL 5
200mA LDO
REGULATOR
C12
SW4
FB4
PGND4
VOUT5
FB5
L4 VOUT4
C13
VOUT5
C15
EXPOSED PAD
Figure 1.
Channel 3 and Channel 4 integrate both high-side and low-side
MOSFETs to deliver output current of 1.2 A.
The switching frequency of the ADP5052 can be programmed
or synchronized to an external clock. The ADP5052 contains a
precision enable pin on each channel for easy power-up sequencing
or adjustable UVLO threshold.
The ADP5052 integrates a general-purpose LDO regulator with
low quiescent current and low dropout voltage that provides up
to 200 mA of output current.
Rev. 0
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor 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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
©2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
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