SLVSE18B
June 2019 – February 2023
TPS1HB35-Q1
PRODUCTION DATA
1
Features
2
Applications
3
Description
4
Revision History
5
Device Comparison Table
6
Pin Configuration and Functions
6.1
Recommended Connections for Unused Pins
7
Specifications
7.1
Recommended Operating Conditions
7.2
Electrical Characteristics
7.3
Absolute Maximum Ratings
7.4
ESD Ratings
7.5
Thermal Information
7.6
SNS Timing Characteristics
7.7
Switching Characteristics
7.8
Typical Characteristics
8
Parameter Measurement Information
9
Detailed Description
9.1
Overview
9.2
Functional Block Diagram
9.3
Feature Description
9.3.1
Protection Mechanisms
9.3.1.1
Thermal Shutdown
9.3.1.2
Current Limit
9.3.1.2.1
Current Limit Foldback
9.3.1.2.2
Programmable Current Limit
9.3.1.2.3
Undervoltage Lockout (UVLO)
9.3.1.2.4
VBB During Short-to-Ground
9.3.1.3
Voltage Transients
9.3.1.3.1
Load Dump
9.3.1.3.2
Driving Inductive Loads
9.3.1.4
Reverse Battery
9.3.1.5
Current Limit Behavior
9.3.1.6
Fault Event – Timing Diagrams
9.3.2
Diagnostic Mechanisms
9.3.2.1
VOUT Short-to-Battery and Open-Load
9.3.2.1.1
Detection With Switch Enabled
9.3.2.1.2
Detection With Switch Disabled
9.3.2.2
SNS Output
9.3.2.2.1
RSNS Value
9.3.2.2.1.1
High Accuracy Load Current Sense
9.3.2.2.1.2
SNS Output Filter
9.3.2.3
Fault Indication and SNS Mux
9.3.2.4
Resistor Sharing
9.3.2.5
High-Frequency, Low Duty-Cycle Current Sensing
9.4
Device Functional Modes
9.4.1
Off
9.4.2
Standby
9.4.3
Diagnostic
9.4.4
Standby Delay
9.4.5
Active
9.4.6
Fault
10
Application and Implementation
10.1
Application Information
10.1.1
Ground Protection Network
10.1.2
Interface With Microcontroller
10.1.3
I/O Protection
10.1.4
Inverse Current
10.1.5
Loss of GND
10.1.6
Automotive Standards
10.1.6.1
ISO7637-2
10.1.6.2
AEC-Q100-012 Short Circuit Reliability
10.1.7
Thermal Information
10.2
Typical Application
10.2.1
Design Requirements
10.2.2
Detailed Design Procedure
10.2.2.1
Thermal Considerations
10.2.2.2
RILIM Calculation
10.2.2.3
Diagnostics
10.2.2.3.1
Selecting the RISNS Value
10.3
Typical Application
10.3.1
Design Requirements
10.3.2
Detailed Design Procedure
10.3.3
Application Curves
10.4
Power Supply Recommendations
10.5
Layout
10.5.1
Layout Guidelines
10.5.2
Layout Example
11
Device and Documentation Support
11.1
Documentation Support
11.1.1
Related Documentation
11.2
Receiving Notification of Documentation Updates
11.3
Support Resources
11.4
Trademarks
11.5
Electrostatic Discharge Caution
11.6
Glossary
12
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
PWP|16
MPDS371A
Thermal pad, mechanical data (Package|Pins)
PWP|16
PPTD352A
Orderable Information
slvse18b_oa
slvse18b_pm
1
Features
AEC-Q100 qualified for automotive applications
Temperature grade 1: –40°C to 125°C
Device HBM ESD classification level 2
Device CDM ESD classification level C4B
Withstands 40-V load dump
Functional Safety-Capable
Documentation available to aid functional safety system design
Single-channel smart high-side switch with
35-mΩ
R
ON
(T
J
= 25°C)
Improve system level reliability through
adjustable current limiting
Current limit set-point from
2 A to 22 A
Robust integrated output protection:
Integrated thermal protection
Protection against short to ground and battery
Protection against
reverse battery
events including automatic switch on of FET with reverse voltage
Automatic shut off on loss of battery and ground
Integrated output clamp to demagnetize inductive loads
Configurable fault handling
Analog sense output can be configured to accurately measure:
Load current
Device temperature
Provides fault indication through SNS pin
Detection of open load and short-to-battery