SLVSHR3
July 2024
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
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
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
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
9
Revision History
10
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
RYQ|21
MPQF641
Thermal pad, mechanical data (Package|Pins)
1
Features
AEC-Q100 qualified:
Device temperature grade 1: –40°C to +125°C ambient operating temperature range
Wide input and output voltage range
Wide input voltage range: 3.0V to 27V (absolute maximum. 42V)
Programmable output voltage range: 0.8V to 22V
±1% reference voltage accuracy
Adjustable output voltage compensation for voltage droop over the cable
±5% accurate output current monitoring
High efficiency over entire load range
96% efficiency at V
IN
= 12V, V
OUT
= 20V and I
OUT
= 3A
Programmable PFM and FPWM mode at light load
Avoid frequency interference and crosstalk
Optional clock synchronization
Programmable switching frequency from 200kHz to 2.2MHz
EMI mitigation
Optional programmable spread spectrum
Lead-less package
Rich protection features
Output overvoltage protection
Hiccup mode for output short-circuit protection
Thermal shutdown protection
8 A average inductor current limit
Small solution size
Maximum switching frequency up to 2.2MHz
3.0mm × 5.0mm
HotRod™
QFN package