SNVSBK6A
February 2020 – July 2020
LM76005-Q1
PRODUCTION DATA
1
Features
2
Applications
3
Description
4
Revision History
5
Pin Configuration and Functions
Pin Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.6
Timing Characteristics
6.7
Switching Characteristics
6.8
System Characteristics
6.9
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Fixed-Frequency, Peak-Current-Mode Control
7.3.2
Light Load Operation Modes — PFM and FPWM
7.3.3
Adjustable Output Voltage
7.3.4
Enable (EN Pin) and UVLO
7.3.5
Internal LDO, VCC UVLO, and Bias Input
7.3.6
Soft Start and Voltage Tracking (SS/TRK)
7.3.7
Adjustable Switching Frequency (RT) and Frequency Synchronization
7.3.8
Minimum On-Time, Minimum Off-Time, and Frequency Foldback at Dropout Conditions
7.3.9
Bootstrap Voltage and VBOOT UVLO (BOOT Pin)
7.3.10
Power Good and Overvoltage Protection (PGOOD)
7.3.11
Overcurrent and Short-Circuit Protection
7.3.12
Thermal Shutdown
7.4
Device Functional Modes
7.4.1
Shutdown Mode
7.4.2
Standby Mode
7.4.3
Active Mode
7.4.4
CCM Mode
7.4.5
DCM Mode
7.4.6
Light Load Mode
7.4.7
Foldback Mode
7.4.8
Forced Pulse-Width-Modulation Mode
8
Application and Implementation
8.1
Application Information
8.2
Typical Applications
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Custom Design With WEBENCH® Tools
8.2.2.2
Output Voltage Setpoint
8.2.2.3
Switching Frequency
8.2.2.4
Input Capacitors
8.2.2.5
Inductor Selection
8.2.2.6
Output Capacitor Selection
8.2.2.7
Feedforward Capacitor
8.2.2.8
Bootstrap Capacitors
8.2.2.9
VCC Capacitors
8.2.2.10
BIAS Capacitors
8.2.2.11
Soft-Start Capacitors
8.2.2.12
Undervoltage Lockout Setpoint
8.2.2.13
PGOOD
8.2.2.14
Synchronization
8.2.3
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.1.1
Layout Highlights
10.1.2
Compact Layout for EMI Reduction
10.1.3
Ground Plane and Thermal Considerations
10.1.4
Feedback Resistors
10.2
Layout Example
11
Device and Documentation Support
11.1
Device Support
11.1.1
Development Support
11.1.1.1
Custom Design With WEBENCH® Tools
11.2
Receiving Notification of Documentation Updates
11.3
Support Resources
11.4
Trademarks
11.5
Electrostatic Discharge Caution
11.6
Support Resources
12
Mechanical, Packaging, and Orderable Information
Package Options
Mechanical Data (Package|Pins)
RNP|30
MPQF448C
Thermal pad, mechanical data (Package|Pins)
RNP|30
QFND666
Orderable Information
snvsbk6a_oa
snvsbk6a_pm
10
Layout