SLVS642F
April 2006 – January 2024
TPS5420
PRODUCTION DATA
1
1
Features
2
Applications
3
Description
4
Electrostatic Discharge Caution
5
Ordering Information
6
Pin Assignments
6.1
Terminal 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
Typical Characteristics
8
Application Information
8.1
Functional Block Diagram
8.2
Detailed Description
8.2.1
Oscillator Frequency
8.2.2
Voltage Reference
8.2.3
Enable (ENA) and Internal Slow Start
8.2.4
Undervoltage Lockout (UVLO)
8.2.5
Boost Capacitor (BOOT)
8.2.6
Output Feedback (VSENSE)
8.2.7
Internal Compensation
8.2.8
Voltage Feed Forward
8.2.9
Pulse-Width-Modulation (PWM) Control
8.2.10
Overcurrent Limiting
8.2.11
Overvoltage Protection
8.2.12
Thermal Shutdown
8.2.13
PCB Layout
8.2.14
Application Circuits
8.2.15
Design Procedure
8.2.15.1
Design Parameters
8.2.15.2
Switching Frequency
8.2.15.3
Input Capacitors
8.2.15.4
Output Filter Components
8.2.15.4.1
Inductor Selection
8.2.15.4.2
Capacitor Selection
40
41
8.2.15.5
Output Voltage Setpoint
8.2.15.6
Boot Capacitor
8.2.15.7
Catch Diode
8.2.15.8
Additional Circuits
8.2.15.9
Circuit Using Ceramic Output Filter Capacitors
8.2.15.10
Output Filter Component Selection
8.2.15.11
External Compensation Network
8.3
Advanced Information
8.3.1
Output Voltage Limitations
8.3.2
Internal Compensation Network
8.3.3
Thermal Calculations
8.4
Performance Graphs
9
Revision History
Package Options
Mechanical Data (Package|Pins)
D|8
MSOI002K
Thermal pad, mechanical data (Package|Pins)
Orderable Information
slvs642f_oa
slvs642f_pm
7
Specifications