SLUSG05
March 2025
UC2843L-Q1
,
UC2844L-Q1
,
UC2845L-Q1
PRODUCTION DATA
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
6.2
ESD Ratings
VALUE
UNIT
V
(ESD)
Electrostatic discharge
Human-body model (HBM), per AEC Q100-002
(1)
±2000
V
Charged-device model (CDM), per AEC Q100-011
±1500
(1)
AEC Q100-002 indicates that HBM stressing shall be in accordance with the ANSI/ESDA/JEDEC JS-001 specifications.