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TPS7A21-Q1 Automotive, 500mA, Low-Noise, Low-IQ, High-PSRR LDO
SBVS437C
December 2022 – June 2024
TPS7A21-Q1
PRODMIX
CONTENTS
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TPS7A21-Q1 Automotive, 500mA, Low-Noise, Low-IQ, High-PSRR LDO
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
Smart Enable (EN)
6.3.2
Low Output Noise
6.3.3
Active Discharge
6.3.4
Dropout Voltage
6.3.5
Foldback Current Limit
6.3.6
Undervoltage Lockout
6.3.7
Thermal Overload Protection (TSD)
6.4
Device Functional Modes
6.4.1
Device Functional Mode Comparison
6.4.2
Normal Operation
6.4.3
Dropout Operation
6.4.4
Disabled
7
Applications and Implementation
7.1
Application Information
7.1.1
Recommended Capacitor Types
7.1.2
Input and Output Capacitor Requirements
7.1.3
Load Transient Response
7.1.4
Undervoltage Lockout (UVLO) Operation
7.1.5
Power Dissipation (PD)
7.1.6
Estimating Junction Temperature
7.1.7
Recommended Area For Continuous Operation
7.2
Typical Application
7.2.1
Design Requirements
7.2.2
Detailed Design Procedure
7.2.2.1
Power Dissipation and Device Operation
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
Device Nomenclature
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
10.1
Mechanical Data
IMPORTANT NOTICE
Package Options
Mechanical Data (Package|Pins)
DSG|8
MPDS308C
DRB|8
MPDS118K
Thermal pad, mechanical data (Package|Pins)
DSG|8
QFND569C
DRB|8
QFND619
Orderable Information
sbvs437c_oa
sbvs437c_pm
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Data Sheet
TPS7A21-Q1 Automotive, 500mA, Low-Noise, Low-I
Q
, High-PSRR LDO
1
Features
AEC-Q100 qualified for automotive applications:
Temperature grade 1: –40°C to +125°C
Junction temperature: –40°C to +150°C
Very low I
Q
: 6.5μA
Input voltage range: 2.0V to 6.0V
Output voltage range: 0.8V to 5.5V (50mV steps)
High PSRR: 91dB at 1kHz
Low output voltage noise: 7.7μV
RMS
Low dropout:
265mV (maximum) at 500mA (2.5V V
OUT
)
Smart EN pulldown
Output voltage tolerance: ±1% over temperature
Supports a wide range of ceramic capacitors:
1µF to 200µF
Package:
3mm × 3mm wettable flank VSON
2mm × 2mm wettable flank WSON
2mm × 2mm WSON (Advance Information)
