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UC284xL-Q1 Automotive High-Performance Economy Current-Mode PWM Controller
SLUSG05
March 2025
UC2843L-Q1
,
UC2844L-Q1
,
UC2845L-Q1
PRODUCTION DATA
CONTENTS
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UC284xL-Q1 Automotive High-Performance Economy Current-Mode PWM Controller
1
1
Features
2
Applications
3
Description
4
Device Comparison
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Pulse-by-Pulse Current Limiting
7.3.2
Current Sense Circuit
7.3.3
Error Amplifier Configuration
7.3.4
Undervoltage Lockout
7.3.5
Oscillator
7.4
Device Functional Modes
7.4.1
Normal Operation
7.4.2
Undervoltage Lockout (UVLO) Start-Up
7.4.3
UVLO Turnoff Mode
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
Custom Design With WEBENCH® Tools
8.2.2.2
UC2842A (UC284xL-Q1) Design Procedure
8.2.3
Application Curves
8.2.4
Power Supply Recommendations
8.2.5
Layout
8.2.5.1
Layout Guidelines
8.2.5.2
Layout Example
9
Device and Documentation Support
9.1
Device Support
9.1.1
Device Nomenclature
9.2
Documentation Support
9.2.1
Related Documentation
9.3
Receiving Notification of Documentation Updates
9.4
Support Resources
9.5
Trademarks
9.6
Electrostatic Discharge Caution
9.7
Glossary
10
Revision History
11
Mechanical, Packaging, and Orderable Information
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
D|8
MSOI002K
Thermal pad, mechanical data (Package|Pins)
Orderable Information
SLUSG05_pm
slusg05_oa
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UC284xL-Q1 Automotive High-Performance Economy Current-Mode PWM Controller