ADP5034RE-EVALZ Analog Devices, ADP5034RE-EVALZ Datasheet
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ADP5034RE-EVALZ
Manufacturer Part Number
ADP5034RE-EVALZ
Description
Power Management IC Development Tools TSSOP ADJ Voltage Apps Board
Manufacturer
Analog Devices
Series
ADP5034r
Datasheet
1.ADP5034RE-EVALZ.pdf
(28 pages)
Specifications of ADP5034RE-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 two 300 mA LDOs
24-lead, 4 mm × 4 mm LFCSP or 28-lead TSSOP package
Regulator accuracy: ±1.8%
Factory programmable or external adjustable VOUTx
3 MHz buck operation with forced PWM and auto PWM/PSM
BUCK1/BUCK2: output voltage range from 0.8 V to 3.8 V
LDO1/LDO2: output voltage range from 0.8 V to 5.2 V
LDO1/LDO2: input supply voltage from 1.7 V to 5.5 V
LDO1/LDO2: high PSRR and low output noise
APPLICATIONS
Power for processors, ASICS, FPGAs, and RF chipsets
Portable instrumentation and medical devices
Space constrained devices
GENERAL DESCRIPTION
The ADP5034 combines two high performance buck regulators
and two low dropout (LDO) regulators. It is available in either a
24-lead 4 mm × 4 mm LFCSP or a 28-lead TSSOP package.
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.
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
1µF
C3
C4
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TYPICAL APPLICATION CIRCUIT
AVIN
VIN4
VIN1
VIN2
VIN3
EN4
EN1
EN2
EN3
ADP5034
EN1
EN2
EN3
EN4
HOUSEKEEPING
(ANALOG)
(DIGITAL)
BUCK1
BUCK2
MODE
MODE
LDO2
LDO1
Figure 1.
Regulators with Two 300 mA LDOs
AGND
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Technical Support
The high switching frequency of the buck regulators enables tiny
multilayer external components and minimizes the board space.
When the MODE pin is set to high, the buck regulators operate in
forced PWM mode. When the MODE pin is set to low, the buck
regulators operate in PWM mode when the load is above a pre-
defined threshold. When the load current falls below a predefined
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 capaci-
tor requirement. The low quiescent current, low dropout voltage,
and wide input voltage range of the ADP5034 LDOs extend the
battery life of portable devices. The ADP5034 LDOs maintain
power supply rejection greater than 60 dB for frequencies as
high as 10 kHz while operating with a low headroom voltage.
Regulators in the ADP5034 are activated through dedicated
enable pins. The default output voltages can be externally set in
the adjustable version, or factory programmable to a wide range
of preset values in the fixed voltage version.
VOUT1
SW1
FB1
PGND1
MODE
VOUT2
SW2
FB2
PGND2
VOUT3
FB3
VOUT4
FB4
Dual 3 MHz, 1200 mA Buck
L1 1µH
R2
R4
R6
R8
L2 1µH
R1
R3
R5
R7
PWM
©2011–2013 Analog Devices, Inc. All rights reserved.
PSM/PWM
C5
10µF
C6
10µF
C7
1µF
C8
1µF
V
1200mA
V
1200mA
V
300mA
V
300mA
OUT1
OUT2
OUT3
OUT4
AT
AT
AT
AT
ADP5034
www.analog.com