SLVSH20B
October 2023 – May 2024
TPSM86837
,
TPSM86838
PRODUCTION DATA
1
1
Features
2
Applications
3
Description
4
Pin Configuration and Functions
5
Specifications
5.1
Absolute Maximum Ratings
5.2
ESD Ratings
5.3
Recommended Operating Conditions
5.4
Thermal Information
5.5
Electrical Characteristics
5.6
Typical Characteristics
6
Detailed Description
6.1
Overview
6.2
Functional Block Diagram
6.3
Feature Description
6.3.1
The Adaptive On-Time Control and PWM Operation
6.3.2
Mode Selection
6.3.2.1
FCCM Control and Eco-mode Control
6.3.3
Soft Start and Prebiased Soft Start
6.3.4
Enable and Adjusting Undervoltage Lockout
6.3.5
Output Overcurrent Limit and Undervoltage Protection
6.3.6
Overvoltage Protection
6.3.7
UVLO Protection
6.3.8
Thermal Shutdown
6.3.9
Output Voltage Discharge
6.3.10
Power Good
6.3.11
Large Duty Operation
6.4
Device Functional Modes
6.4.1
Standby Operation
6.4.2
Light Load Operation
7
Application and Implementation
7.1
Application Information
7.2
Typical Application
7.2.1
Design Requirements
7.2.2
Detailed Design Procedure
7.2.2.1
Output Voltage Resistors Selection
7.2.2.2
Output Filter Selection
7.2.2.3
Input Capacitor Selection
7.2.3
Application Curves
7.3
Power Supply Recommendations
7.3.1
Application Thermal Considerations
7.4
Layout
7.4.1
Layout Guidelines
7.4.2
Layout Example
8
Device and Documentation Support
8.1
Device Support
8.1.1
Third-Party Products Disclaimer
8.2
Documentation Support
8.2.1
Related Documentation
8.3
Receiving Notification of Documentation Updates
8.4
Support Resources
8.5
Trademarks
8.6
Electrostatic Discharge Caution
8.7
Glossary
9
Revision History
10
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
RCG|19
MPQF735
Thermal pad, mechanical data (Package|Pins)
Orderable Information
slvsh20b_oa
slvsh20b_pm
7.2.3
Application Curves
Figure 7-2
TPSM86837 Efficiency
Figure 7-4
TPSM86838 Load Regulation
Figure 7-6
Switching Frequency vs Input Voltage
Figure 7-8
TPSM86838 Switching Frequency vs Input Voltage
Figure 7-10
TPSM86838 Steady State Waveform, I
OUT
= 0.01A
Figure 7-12
Enable Relative to EN
Figure 7-14
TPSM86837 Transient Response 0A to 4A
Figure 7-16
TPSM86837 Transient Response 0A to 8A
Figure 7-3
TPSM86838 Efficiency
Figure 7-5
TPSM86838 Line Regulation
Figure 7-7
TPSM86837 Switching Frequency vs Input Voltage
Figure 7-9
TPSM86837 Steady State Waveform, I
OUT
= 0.01A
Figure 7-11
Steady State Waveform, I
OUT
= 8A
Figure 7-13
Disable Relative to EN
Figure 7-15
TPSM86838 Transient Response 0A to 4A
Figure 7-17
TPSM86838 Transient Response 0A to 8A