SNVSB03D
December 2018 – January 2020
TPS3840
PRODUCTION DATA.
1
Features
2
Applications
3
Description
Device Images
Typical Application Circuit
TPS3840 Typical Supply Current
4
Revision History
5
Device Comparison
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
Timing Requirements
7.7
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Input Voltage (VDD)
8.3.1.1
VDD Hysteresis
8.3.1.2
VDD Transient Immunity
8.3.2
User-Programmable Reset Time Delay
8.3.3
Manual Reset (MR) Input
8.3.4
Output Logic
8.3.4.1
RESET Output, Active-Low
8.3.4.2
RESET Output, Active-High
8.4
Device Functional Modes
8.4.1
Normal Operation (VDD > VDD(min))
8.4.2
VDD Between VPOR and VDD(min)
8.4.3
Below Power-On-Reset (VDD < VPOR)
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Design 1: Dual Rail Monitoring with Power-Up Sequencing
9.2.1.1
Design Requirements
9.2.1.2
Detailed Design Procedure
9.2.1.3
Application Curves
9.2.2
Design 2: Battery Voltage and Temperature Monitor
9.2.2.1
Design Requirements
9.2.2.2
Detailed Design Procedure
9.2.3
Design 3: Fast Start Undervoltage Supervisor with Level-shifted Input
9.2.3.1
Design Requirements
9.2.3.2
Detailed Design Procedure
9.2.4
Design 4: Voltage Monitor with Back-up Battery Switchover
9.2.4.1
Design Requirements
9.2.4.2
Detailed Design Procedure
9.2.5
Application Curve: TPS3840EVM
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
Device and Documentation Support
12.1
Device Nomenclature
12.2
Support Resources
12.3
Trademarks
12.4
Electrostatic Discharge Caution
12.5
Glossary
13
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
DBV|5
MPDS018T
Thermal pad, mechanical data (Package|Pins)
Orderable Information
snvsb03d_oa
snvsb03d_pm
9.2
Typical Application