SNVSCK4B
April 2024 – October 2025
TPS3842-Q1
PRODUCTION DATA
1
1
Features
2
Applications
3
Description
4
Device Comparison
5
Pin Configuration and Functions
6
Specification
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Timing Requirements
6.7
Switching Characteristics
6.8
Timing Diagram
6.9
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
SENSE Input
7.3.1.1
SENSE Hysteresis
7.3.2
Selecting the SENSE Delay Time
7.3.3
Selecting the RESET Delay Time
7.3.4
RESET Output
7.4
Device Functional Modes
7.4.1
Normal Operation (VDD > VDD(min))
7.4.2
Above Power-On Reset but Less Than VDD(min) (VPOR < VDD < VDD(min))
7.4.3
Below Power-On Reset (VDD < VPOR)
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Meeting the Sense and Reset Delay
8.2.3
Application Curve
8.3
Power Supply Recommendations
8.4
Layout
8.4.1
Layout Guidelines
8.4.2
Layout Example
9
Device and Documentation Support
9.1
Device Support
9.2
Documentation Support
9.3
Support Resources
9.4
Trademarks
9.5
Electrostatic Discharge Caution
9.6
Glossary
10
Revision History
11
Mechanical, Packaging, and Orderable Information
6.6
Timing Requirements
At 1.9V ≤ V
DD
≤ 42V, CTS = CTR = Open,
RESET
Voltage (V
RESET
) = 100kΩ to V
DD
,
RESET
load = 50pF, and over the operating free-air temperature range of –40°C to 125°C, unless otherwise noted. Typical values are at T
A
= 25°C.
MIN
NOM
MAX
UNIT
t
GI (VIT)
Glitch Immunity undervoltage V
ITN(UV)
, 20% Overdrive
(1)
CTS = Open
5
µs
Glitch Immunity overvoltage V
ITP(OV)
, 20% Overdrive
(1)
CTS = Open
5
µs
(1)
20% Overdrive from threshold. Overdrive % = [V
SENSE
+ V
ITP
] / V
ITP