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LP8725 Datasheet Preview

LP8725 Datasheet

Power-Management

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LP8725
www.ti.com
SNVS618G – DECEMBER 2009 – REVISED MAY 2013
LP8725 Power Management Unit for Application or
Multimedia Processors and Subsystems
Check for Samples: LP8725
FEATURES
1
2 Two High-Efficiency Step-Down DC-DC
Converters, IOUT = 600 mA, With a 4-MHz
Switching Frequency Using Small 1-µH
Inductors, With Options up to 800 mA
• Three Digital LDOs for up to 300-mA Load
Current Each
• Two Low-Noise Analog 300-mA LDOs
• Two Low-Input Low-Output Regulators,
IOUT = 300 mA
• I2C-Compatible Interface for Control of Internal
Registers
• Adjustable Startup Sequence Through Serial
Interface or Configuration
• Thermal Shutdown Protection
APPLICATIONS
• Multimedia Processors
• Portable Handheld Products
KEY SPECIFICATIONS
• 190 mV typ. Dropout Voltage on digital LDOs
@ 300 mA
• 2% typ. Output Voltage Accuracy on digital
and analog LDOs
• 10 μVrms Output Noise on analog LDOs
• ±2% typ. Output Voltage Bucks up to 93%
efficiency
• 30-bump DSBGA package (0.5 mm pitch)
DESCRIPTION
This device is a multi-function programmable Power
Management Unit (PMU), optimized for sub block
power solutions. This device integrates two highly
efficient 600-mA step-down DC-DC converters
configurable up to 800-mA load with Dynamic Voltage
Scaling (DVS) via the serial interface, two low-noise
analog LDOs, three digital LDOs for up to 300 mA
load current each, two Low-Input Low-Output (LILO)
regulators, and an I2C-compatible serial interface to
allow a host controller access to the internal control
registers. The device also features programmable
power-on sequencing. LDO regulators provide high
PSRR and low noise ideally suited for supplying
power to both analog and digital loads.
The device can be configured either as a Sub_PMU
for modules (for example, camera or multimedia
modules) or as a stand-alone PMU that powers the
processor itself.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2009–2013, Texas Instruments Incorporated




etcTI

LP8725 Datasheet Preview

LP8725 Datasheet

Power-Management

No Preview Available !

LP8725
SNVS618G – DECEMBER 2009 – REVISED MAY 2013
TYPICAL APPLICATION (SUB-PMU)
VINB1
VINB1
VIN1
2.2 PF
VIN1
VIN3
2.2 PF
VIN3
4.7 µF
FB1
0.8V to 3.0V
@ 800 mA
4.7 µF
SW1
1 PH
GNDB1
VINB2
VINB2
Buck 1
LP8725
Voltage
Reference
Thermal
Shutdown
4.7 µF
FB2
UVLO
0.8V to 3.0V
@ 800 mA
4.7 µF
SW2
1 PH
GNDB2
VSI
B2_EN
Buck 2
10k 1.5k 1.5k
SDA
SCL
RESET_N
EN
DVS
DEFSEL
VINLILO1
CONFIG
2.2 PF
VINLILO2
Serial Interface
and
Control
VIN2
2.2 PF
VIN2
LDO 1
D
LDO 2
D
LDO3
D
LDO4
A
LDO5
A
LILO 1
D
LILO 2
D
2.2 PF
GND
www.ti.com
LDO1
1 µF
1.2V to 3.3V
@ 300 mA
LDO2
1 µF
1.2V to 3.3V
@ 300 mA
LDO3
1 µF
1.2V to 3.3V
@ 300 mA
LDO3_EN
LDO4
1 µF
1.2V to 3.3V
@ 300 mA
LDO5
1 µF
1.2V to 3.3V
@ 300 mA
LILO1
1 µF
0.8V to 3.3V
@300 mA
LILO2
1 µF
0.8V to 3.3V
@300 `mA
2
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Product Folder Links: LP8725
Copyright © 2009–2013, Texas Instruments Incorporated


Part Number LP8725
Description Power-Management
Maker etcTI
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