SLUS829G
August 2008 – February 2020
UCC2897A
PRODUCTION DATA.
1
Features
2
Applications
3
Description
Device Images
Typical Application Diagram
4
Revision History
5
Device Options
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
Detailed Pin Descriptions
8.3.1.1
RDEL
8.3.1.2
RON
8.3.1.3
ROFF
8.3.1.4
VREF
8.3.1.5
SYNC
8.3.1.6
GND
8.3.1.7
CS
8.3.1.8
RSLOPE
8.3.1.9
FB
8.3.1.10
SS/SD
8.3.1.11
PGND
8.3.1.12
AUX
8.3.1.13
OUT
8.3.1.14
VDD
8.3.1.15
LINEUV
8.3.1.16
VIN
8.3.1.17
LINEOV
8.3.2
JFET Control and UVLO
8.3.3
Line Undervoltage Protection
8.3.4
Line Overvoltage Protection
8.3.5
Pulse Skipping
8.3.6
Synchronization
8.3.7
Gate Drive Connection
8.3.8
Bootstrap Biasing
8.4
Device Functional Modes
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Oscillator
9.2.2.2
Soft Start
9.2.2.3
VDD Bypass Requirements
9.2.2.4
Delay Programming
9.2.2.5
Input Voltage Monitoring
9.2.2.6
Current Sense and Slope Compensation
9.2.3
Application Curves
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
Device and Documentation Support
12.1
Documentation Support
12.1.1
Related Documentation
12.2
Receiving Notification of Documentation Updates
12.3
Community Resources
12.4
Trademarks
12.5
Electrostatic Discharge Caution
12.6
Glossary
13
Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
RGP|20
MPQF126G
PW|20
MPDS362A
散热焊盘机械数据 (封装 | 引脚)
RGP|20
QFND079Y
订购信息
slus829g_oa
slus829g_pm
7.7
Typical Characteristics
Figure 2.
UVLO Voltage Thresholds vs. Junction Temperature
Figure 4.
Supply Current vs. Supply Voltage
Figure 6.
Line UV/OV Voltage Threshold vs. Junction Temperature
Figure 8.
Soft Start/Shutdown Threshold Voltage vs. Junction Temperature
Figure 10.
Oscillator Frequency vs. Junction Temperature
Figure 12.
Current Sense Threshold Voltage vs. Junction Temperature
Figure 14.
Out And AUX Rise And Fall Time vs. Junction Temperature
Figure 16.
Delay Time vs. Junction Temperature
Figure 18.
Reference Voltage vs. Temperature
Figure 3.
Quiescent Current vs. Supply Voltage
Figure 5.
Typical Startup Current Available From VDD vs. Temperature
Figure 7.
Softstart Currents vs. Temperature
Figure 9.
Switching Frequency vs. Programming Resistance
Figure 11.
Maximum Duty Cycle vs. Junction Temperature
Figure 13.
Synchronization Threshold Voltage vs. Junction Temperature
Figure 15.
Delay Time vs. Delay Resistance
Figure 17.
Delay Time vs. Junction Temperature
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