ADI Confidential
FEATURES
Wide input voltage range: 2.1 V to 5.5 V
2.5 MHz switching frequency
Current mode architecture for best transient performance
Internal compensation and soft start
I
2
C-programmable output levels and power sequencing
PSM mode on Channel 1
Power
Channel 1: synchronous boost regulator, 1.2 A maximum
Channel 2: H-bridge buck-boost regulator, 0.9 A maximum
Channel 3: synchronous buck regulator, 1.8 A maximum
Channel 4: synchronous buck regulator, 0.9 A maximum
Channel 5: 45 mΩ load switch, 0.8 A
Channel 6: synchronous buck regulator, 0.9 A maximum
Channel 7: HV boost regulator for backlight LED,
up to 23.75 V (typical)
Channel 8: LDO regulator, 100 mA maximum
Channel 9: low quiescent current LDO, 50 mA maximum
Auxiliary
Real-time clock (RTC) with backup battery charger
Flexible power sequence control
Reset for external microprocessor
Package
4 mm × 4 mm, 64-ball WLCSP
Rev. Sp0
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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.
Compact PMU with Six DC-to-DC Channels,
FUNCTIONAL BLOCK DIAGRAM
SCL
2
I
C
INTERFACE
SDA
REGISTER
POWER
SEQUENCER
ALARM OUT
RTC
LOGIC
CH 9 KEEP ALIVE
SUB CPU
LDO
REGULATOR
XTAL
32kHz
OSCILLATOR
BACKUP BATTERY
BACKUP
BATTERY
CHARGER
RESET
RESET OUT
Two LDOs, Load Switch, and RTC
APPLICATIONS
Digital still cameras
Digital video cameras
Multimedia devices
Space-constrained portable equipment
GENERAL DESCRIPTION
The ADP5046 is a compact, multi-output power management unit
(PMU) designed for space-constrained applications that require
high efficiency power regulation. The device includes a boost,
a buck-boost, and three buck regulators; two LDOs; a backlight
driver; a load switch; and an RTC/backup battery manager. The
total solution size is minimized through a combination of chip scale
packaging; high frequency switches; and the integration of power
FETs, external compensation, and feedback resistors. To ensure
maximum flexibility, the voltage outputs, power sequencing, and
soft start time can be programmed via the I
factory programming.
SYSTEM
CH 1 SYNC BOOST
REGULATOR
I/O
CH 2 BUCK-BOOST
REGULATOR
VCORE
CH 3 BUCK
REGULATOR
AUXILIARY
CH 4 BUCK
REGULATOR
AUXILIARY
CH 5 LOAD SWITCH
MEMORY
CH 6 BUCK
REGULATOR
BACKLIGHT LEDs
CH 7 BOOST
REGULATOR
ANALOG
CH 8 LDO
REGULATOR
Figure 1.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
ADP50460008
2
C interface or set by
www.analog.com
©2012 Analog Devices, Inc. All rights reserved.
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