SLUSEC8A
March 2021 – June 2022
TPS628501
,
TPS628502
,
TPS628503
PRODUCTION DATA
1
Features
2
Applications
3
Description
4
Revision History
5
Device Comparison Table
6
Pin Configuration and 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
Parameter Measurement Information
8.1
Schematic
9
Detailed Description
9.1
Overview
9.2
Functional Block Diagram
9.3
Feature Description
9.3.1
Precise Enable (EN)
9.3.2
COMP/FSET
9.3.3
MODE / SYNC
9.3.4
Spread Spectrum Clocking (SSC)
9.3.5
Undervoltage Lockout (UVLO)
9.3.6
Power Good Output (PG)
9.3.7
Thermal Shutdown
9.4
Device Functional Modes
9.4.1
Pulse Width Modulation (PWM) Operation
9.4.2
Power Save Mode Operation (PWM/PFM)
9.4.3
100% Duty-Cycle Operation
9.4.4
Current Limit and Short Circuit Protection
9.4.5
Foldback Current Limit and Short Circuit Protection
9.4.6
Output Discharge
9.4.7
Soft Start
9.4.8
Input Overvoltage Protection
10
Application and Implementation
10.1
Application Information
10.1.1
Programming the Output Voltage
10.1.2
Inductor Selection
10.1.3
Capacitor Selection
10.1.3.1
Input Capacitor
10.1.3.2
Output Capacitor
10.2
Typical Application
10.2.1
Design Requirements
10.2.2
Detailed Design Procedure
10.2.3
Application Curves
10.3
System Examples
10.3.1
Synchronizing to an External Clock
11
Power Supply Recommendations
12
Layout
12.1
Layout Guidelines
12.2
Layout Example
13
Device and Documentation Support
13.1
Device Support
13.1.1
Third-Party Products Disclaimer
13.2
Receiving Notification of Documentation Updates
13.3
Support Resources
13.4
Trademarks
13.5
Electrostatic Discharge Caution
13.6
Glossary
14
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
DRL|8
MPCS002D
Thermal pad, mechanical data (Package|Pins)
Orderable Information
slusec8a_oa
slusec8a_pm
1
Features
Functional Safety-Capable
Documentation available to aid functional safety system design
Input voltage range: 2.7 V to 6 V
Output voltage from 0.6 V to 5.5 V
1% feedback voltage accuracy
(full temperature range)
T
J
= –40°C to +150°C
Family of 1-A, 2-A (continuous), and 3-A (peak) devices
Adjustable switching frequency and sync of
1.8 MHz to 4 MHz
Forced PWM or PWM and PFM operation
Quiescent current 17 µA (typical)
Precise ENABLE input allows:
User-defined undervoltage lockout
Exact sequencing
100% duty cycle mode
Active output discharge
Power-good output with window comparator
For device options with adjustable soft start, see the
TPS628511