900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf






etcTI

LP8731-Q1 Datasheet Preview

LP8731-Q1 Datasheet

Dual High-Current Step-Down DC-DC And Dual Linear Regulator

No Preview Available !

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
LP8731-Q1
SNVSA28 – DECEMBER 2014
LP8731-Q1 Dual High-Current Step-Down DC-DC And Dual Linear Regulators
with I2C Interface
1 Features
1 Two LDOs for Powering Internal Processor
Functions and I/Os
• High-Speed Serial Interface for Independent
Control of Device Functions and Settings
• Precision Internal Reference
• Thermal Overload Protection
• Current Overload Protection
• Software Programmable Regulators
• External Power-On-Reset Function for Buck1 and
Buck2 (Power Good with Delay Function)
• Undervoltage Lockout (UVLO)
• LP8731-Q1 is an Automotive-Grade Product:
AECQ-100 Grade-1 Qualified
Step-Down DC/DC Converter (2xBuck)
– Programmable VOUT from:
– Buck1 : 0.8875 V – 1.675 V at 1.2 A
– Buck2 : 0.8875 V – 1.675 V at 1.2 A
– Up to 96% Efficiency
– PWM Switching Frequency of 2.1 MHz
– ±2% Output Voltage Accuracy
– Automatic Soft Start
Linear Regulators (2xLDO)
– Programmable VOUT of 0.8 V to 3.3 V
– ±3% Output Voltage Accuracy
– 300-mA Output Current
– 30-mV (Typical) Dropout
2 Applications
• Configurable Output PMU for ADAS (Advanced
Driver Assistance Systems)
• FPGA, DSP Core Power
• Applications Processors
3 Description
The LP8731-Q1 is a multi-function, programmable
Power Management Unit (PMU), optimized for low
power FPGAs, microprocessors, and DSPs. This
device integrates two highly efficient 1.2-A step-down
DC-DC converters with dynamic voltage management
(DVM), two 300-mA linear regulators, and a 400-kHz
I2C-compatible interface to allow a host controller
access to the internal control registers of the LP8731-
Q1. The LP8731-Q1 device additionally features
programmable power-on sequencing.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (MAX)
LP8731-Q1
DSBGA (25)
2.52 mm x 2.52 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
space
space
space
Simplified Schematic
0.47 2F
1 2F
1 2F
0.47 2F
EN_T
ENLDO1
ENLDO2
ENSW1
ENSW2
LDO1
VINLDO1
VINLDO2
LDO2
VINLDO12
nPOR
VIN1
LP8731
SW1
FB1
GND_SW1
VIN2
SDA
SCL
GND_L
GND_C
SW2
FB2
GND_SW2
AVDD
VDD
1 2F
100k
10 2F
2.2 2H
LDO1
SDA
SCL
10 2F
10 2F
2.2 2H
10 2F
Buck1
LDO1
Buck2
LDO2
1 2F
I/O Voltage
Domain
Advanced
Power
Controller
Core ADAS
Domain
Block
Peripheral
ADAS
Blocks
Application
System or SoC
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.




etcTI

LP8731-Q1 Datasheet Preview

LP8731-Q1 Datasheet

Dual High-Current Step-Down DC-DC And Dual Linear Regulator

No Preview Available !

LP8731-Q1
SNVSA28 – DECEMBER 2014
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Device Comparison Tables................................... 3
6 Pin Configuration and Functions ......................... 3
7 Specifications......................................................... 5
7.1 Absolute Maximum Ratings ...................................... 5
7.2 ESD Ratings ............................................................ 5
7.3 Recommended Operating Conditions (Bucks).......... 5
7.4 Thermal Information .................................................. 5
7.5 General Electrical Characteristics............................. 6
7.6 Low Dropout Regulators, LDO1 And LDO2.............. 6
7.7 Buck Converters SW1, SW2..................................... 7
7.8 I/O Electrical Characteristics..................................... 7
7.9 Power-On Reset Threshold/Function (POR) ............ 7
7.10 I2C-Compatible Interface Timing............................. 8
7.11 Typical Characteristics ............................................ 9
8 Detailed Description ............................................ 11
8.1 Overview ................................................................. 11
8.2 Functional Block Diagram ....................................... 11
8.3 Features Description ............................................... 12
8.4 Device Functional Modes........................................ 19
8.5 Programming........................................................... 20
8.6 LP8731-Q1 Register Maps ..................................... 22
9 Application and Implementation ........................ 37
9.1 Application Information............................................ 37
9.2 Typical Application .................................................. 37
10 Power Supply Recommendations ..................... 43
10.1 Analog Power Signal Routing ............................... 43
11 Layout................................................................... 44
11.1 Layout Guidelines ................................................. 44
11.2 Layout Example .................................................... 44
12 Device and Documentation Support ................. 45
12.1 Device Support...................................................... 45
12.2 Documentation Support ........................................ 45
12.3 Trademarks ........................................................... 45
12.4 Electrostatic Discharge Caution ............................ 45
12.5 Glossary ................................................................ 45
13 Mechanical, Packaging, and Orderable
Information ........................................................... 45
4 Revision History
DATE
December 2014
REVISION
*
NOTES
Initial release.
2
Submit Documentation Feedback
Product Folder Links: LP8731-Q1
Copyright © 2014, Texas Instruments Incorporated


Part Number LP8731-Q1
Description Dual High-Current Step-Down DC-DC And Dual Linear Regulator
Maker etcTI
PDF Download

LP8731-Q1 Datasheet PDF






Similar Datasheet

1 LP8731-Q1 Dual High-Current Step-Down DC-DC And Dual Linear Regulator
etcTI





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy