SNVSA06C
March 2015 – August 2018
LP8758-B0
PRODUCTION DATA.
1
Features
2
Applications
3
Description
4
Simplified Schematic
Efficiency vs Output Current (VIN = 3.7 V)
5
Revision History
6
Pin Configuration and Functions
Pin Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics
7.6
I2C Serial Bus Timing Parameter
7.7
Switching Characteristics
7.8
Typical Characteristics
8
Detailed Description
8.1
Overview
8.1.1
Buck Information
8.1.1.1
Operating Modes
8.1.1.2
Features
8.1.1.3
Programmability
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Multi-Phase DC-DC Converters
8.3.1.1
Overview
8.3.1.2
Multi-Phase Operation and Phase Adding/Shedding
8.3.1.3
Transition Between PWM and PFM Modes
8.3.1.4
Multi-Phase Switcher Configurations
8.3.1.5
Buck Converter Load Current Measurement
8.3.1.6
Spread-Spectrum Mode
8.3.2
Power-Up
8.3.3
Regulator Control
8.3.3.1
Enabling and Disabling Regulator
8.3.3.2
Changing Output Voltage
8.3.4
Device Reset Scenarios
8.3.5
Diagnosis and Protection Features
8.3.5.1
Warnings for Diagnosis (Interrupt)
8.3.5.1.1
Output Current Limit
8.3.5.1.2
Thermal Warning
8.3.5.2
Protection (Regulator Disable)
8.3.5.2.1
Short-Circuit and Overload Protection
8.3.5.2.2
Thermal Shutdown
8.3.5.3
Fault (Power Down)
8.3.5.3.1
Undervoltage Lockout
8.3.6
Digital Signal Filtering
8.4
Device Functional Modes
8.4.1
Modes of Operation
8.5
Programming
8.5.1
I2C-Compatible Interface
8.5.1.1
Data Validity
8.5.1.2
Start and Stop Conditions
8.5.1.3
Transferring Data
8.5.1.4
I2C-Compatible Chip Address
8.5.1.5
Auto Increment Feature
8.6
Register Maps
8.6.1
Register Descriptions
8.6.1.1
DEV_REV
8.6.1.2
OTP_REV
8.6.1.3
BUCK0_CTRL1
8.6.1.4
BUCK0_CTRL2
8.6.1.5
BUCK1_CTRL2
8.6.1.6
BUCK2_CTRL2
8.6.1.7
BUCK3_CTRL2
8.6.1.8
BUCK0_VOUT
8.6.1.9
BUCK0_FLOOR_VOUT
8.6.1.10
BUCK0_DELAY
8.6.1.11
RESET
8.6.1.12
CONFIG
8.6.1.13
INT_TOP
8.6.1.14
INT_BUCK_0_1
8.6.1.15
INT_BUCK_2_3
8.6.1.16
TOP_STAT
8.6.1.17
BUCK_0_1_STAT
8.6.1.18
BUCK_2_3_STAT
8.6.1.19
TOP_MASK
8.6.1.20
BUCK_0_1_MASK
8.6.1.21
BUCK_2_3_MASK
8.6.1.22
SEL_I_LOAD
8.6.1.23
I_LOAD_2
8.6.1.24
I_LOAD_1
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Application Components
9.2.2.1.1
Inductor Selection
9.2.2.1.2
Input Capacitor Selection
9.2.2.1.3
Output Capacitor Selection
9.2.3
Application Curves
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
Device and Documentation Support
12.1
Device Support
12.1.1
Third-Party Products Disclaimer
12.2
Documentation Support
12.2.1
Related Documentation
12.3
Receiving Notification of Documentation Updates
12.4
Community Resources
12.5
Trademarks
12.6
Electrostatic Discharge Caution
12.7
Glossary
13
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
YFF|35
MXBG315
Thermal pad, mechanical data (Package|Pins)
Orderable Information
snvsa06c_oa
snvsa06c_pm
8.3.5.1
Warnings for Diagnosis (Interrupt)