SNVSB11B
June 2018 – May 2019
LMZM33606
PRODUCTION DATA.
1
Features
2
Applications
Simplified Schematic
3
Description
Minimum Solution Size
Typical Efficiency (Auto Mode)
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
Switching Characteristics
6.7
Typical Characteristics (VIN = 12 V)
6.8
Typical Characteristics (VIN = 24 V)
6.9
Typical Characteristics (VIN = 36 V)
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Adjusting the Output Voltage
7.3.2
Input Capacitor Selection
7.3.3
Output Capacitor Selection
7.3.4
Transient Response
7.3.5
Feed-Forward Capacitor
7.3.6
Switching Frequency (RT)
7.3.7
Synchronization (SYNC/MODE)
7.3.8
Output Enable (EN)
7.3.9
Programmable System UVLO (EN)
7.3.10
Internal LDO and BIAS_SEL
7.3.11
Power Good (PGOOD) and Power Good Pull-Up (PGOOD_PU)
7.3.12
Mode Select (Auto or FPWM)
7.3.13
Soft Start and Voltage Tracking
7.3.14
Voltage Dropout
7.3.15
Overcurrent Protection (OCP)
7.3.16
Thermal Shutdown
7.4
Device Functional Modes
7.4.1
Active Mode
7.4.2
Auto Mode
7.4.3
FPWM Mode
7.4.4
Shutdown Mode
8
Application and Implementation
8.1
Application Information
8.2
Typical Application
8.2.1
Design Requirements
8.2.2
Detailed Design Procedure
8.2.2.1
Output Voltage Setpoint
8.2.2.2
Setting the Switching Frequency
8.2.2.3
Input Capacitors
8.2.2.4
Output Capacitor Selection
8.2.2.5
Feed-Forward Capacitor (CFF)
8.2.2.6
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
10.3
Theta JA vs PCB Area
10.4
Package Specifications
10.5
EMI
10.5.1
EMI Plots
11
Device and Documentation Support
11.1
Device Support
11.1.1
Third-Party Products Disclaimer
11.2
Receiving Notification of Documentation Updates
11.3
Community Resources
11.4
Trademarks
11.5
Electrostatic Discharge Caution
11.6
Glossary
12
Mechanical, Packaging, and Orderable Information
12.1
Tape and Reel Information
10.4
Package Specifications
Table 9.
Package Specifications Table
LMZM33606
VALUE
UNIT
Weight
2.0
grams
Flammability
Meets UL 94 V-O
MTBF Calculated Reliability
Per Bellcore TR-332, 50% stress, T
A
= 40°C, ground benign
85.5
MHrs