SLVSHR3
July
2024
PRODUCTION DATA
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1
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1 Features
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2 Applications
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3 Description
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4 Pin Configuration and Functions
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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
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6 Detailed Description
- 6.1
Overview
- 6.2
Functional Block Diagram
- 6.3
Feature Description
- 6.3.1
VCC Power Supply
- 6.3.2
EXTVCC Power Supply
- 6.3.3
Input Undervoltage Lockout
- 6.3.4
Enable and Programmable UVLO
- 6.3.5
Soft Start
- 6.3.6
Shutdown
- 6.3.7
Switching Frequency
- 6.3.8
Switching Frequency Dithering
- 6.3.9
Inductor Current Limit
- 6.3.10
Internal Charge Path
- 6.3.11
Output Voltage Setting
- 6.3.12
Output Current Monitoring and Cable Voltage Droop Compensation
- 6.3.13
Output Current Limit
- 6.3.14
Overvoltage Protection
- 6.3.15
Output Short Circuit Protection
- 6.3.16
Power Good
- 6.3.17
Constant Current Output Indication
- 6.3.18
Thermal Shutdown
- 6.4
Device Functional Modes
- 6.4.1
PWM Mode
- 6.4.2
Power Save Mode
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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
Switching Frequency
- 7.2.2.2
Output Voltage Setting
- 7.2.2.3
Inductor Selection
- 7.2.2.4
Input Capacitor
- 7.2.2.5
Output Capacitor
- 7.2.2.6
Output Current Limit
- 7.2.2.7
Loop Stability
- 7.2.3
Application Curves
- 7.3
Power Supply Recommendations
- 7.4
Layout
- 7.4.1
Layout Guidelines
- 7.4.2
Layout Example
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8 Device and Documentation Support
- 8.1
Device Support
- 8.1.1
Third-Party Products Disclaimer
- 8.2
Receiving Notification of Documentation Updates
- 8.3
Support Resources
- 8.4
Trademarks
- 8.5
Electrostatic Discharge Caution
- 8.6
Glossary
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9 Revision History
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10Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
7.2.3 Application Curves
Figure 7-2 Switching Waveforms in
VIN = 12V, VOUT = 5V, IO
= 5A, FPWM Figure 7-4 Switching Waveforms in VIN = 12V,
VOUT = 12V, IO = 3A, FPWM Figure 7-6 Switching Waveforms in VIN = 12V,
VOUT = 20V, IO = 2A, FPWM Figure 7-8 Start-up Waveforms in VIN = 12V,
VOUT = 5V, RLOAD = 1.2Ω,
FPWM Figure 7-10 Line Transient Waveforms in VIN =
9V to 20V, VOUT = 12V, IO = 3A with 200μs
Slew Rate, FPWM Figure 7-12 Output Current Limit Waveforms in VIN = 12V,
VOUT = 5V, RLOAD = 0.8Ω,
RSNS = 10mΩ, FPWM Figure 7-3 Switching Waveforms in
VIN = 12V, VOUT = 5V, IO
= 0A, PFM Figure 7-5 Switching Waveforms in VIN = 12V,
VOUT = 12V, IO = 0A, PFM Figure 7-7 Switching Waveforms in VIN = 12V,
VOUT = 20V, IO = 0A, PFM Figure 7-9 Shutdown Waveforms in VIN = 12V,
VOUT = 5V, RLOAD = 1.2Ω,
FPWM Figure 7-11 Load Transient Waveforms in VIN =
12V, VOUT = 5V, IO = 2.5A to 5A with 20μs
Slew Rate, FPWM