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
1
Features
4.5V to 28V input voltage range
0.6V to 5.5V output voltage range
8A continuous output current capability
Integrated MOSFETs, inductor, and basic passives
0.6V ±1% reference voltage at 25°C
D-CAP3™
control mode for fast transient response
TPSM86838 with FCCM for pseudo-fixed frequency with lower output ripple
TPSM86837 with Eco-mode for high light-load efficiency
Adjustable soft-start time by SS capacitor
Built-in output discharge function
Selectable 800kHz and 1200kHz switching frequency
Power-good indicator to monitor output voltage
Supports up to 98% duty operation
Non-latched protections for UV, OV, OT and UVLO
–40°C to +150°C operating junction temperature
19-pin 5.0mm × 5.5mm QFN
HotRod™
package