SNVS118F
december 1999 – may 2023
LM2594
,
LM2594HV
PRODUCTION DATA
1
1
Features
2
Applications
3
Description
4
Revision History
5
Description (continued)
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 – 3.3 V
7.6
Electrical Characteristics – 5 V
7.7
Electrical Characteristics – 12 V
7.8
Electrical Characteristics – Adjustable
7.9
Electrical Characteristics – All Output Voltage Versions
7.10
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Delayed Start-Up
8.3.2
Undervoltage Lockout
8.3.3
Inverting Regulator
8.3.4
Inverting Regulator Shutdown Methods
8.4
Device Functional Modes
8.4.1
Discontinuous Mode Operation
9
Application and Implementation
9.1
Application Information
9.1.1
Input Capacitor (CIN)
9.1.2
Output Capacitor (COUT)
9.1.3
Catch Diode
9.1.4
Inductor Selection
9.1.5
Output Voltage Ripple and Transients
9.1.6
Open Core Inductors
9.2
Typical Applications
9.2.1
Series Buck Regulator (Fixed Output)
9.2.1.1
Design Requirements
9.2.1.2
Detailed Design Procedure
9.2.1.2.1
Custom Design with WEBENCH® Tools
9.2.1.2.2
Inductor Selection (L1)
9.2.1.2.3
Output Capacitor Selection (COUT)
9.2.1.2.4
Catch Diode Selection (D1)
9.2.1.2.5
Input Capacitor (CIN)
9.2.1.3
Application Curves
9.2.2
Series Buck Regulator (Adjustable Output)
9.2.2.1
Design Requirements
9.2.2.2
Detailed Design Procedure
9.2.2.2.1
Programming Output Voltage
9.2.2.2.2
Inductor Selection (L1)
9.2.2.2.3
Output Capacitor Selection (COUT)
9.2.2.2.4
Feedforward Capacitor (CFF)
9.2.2.2.5
Catch Diode Selection (D1)
9.2.2.2.6
Input Capacitor (CIN)
9.2.2.3
Application Curves
9.3
Power Supply Recommendations
9.4
Layout
9.4.1
Layout Guidelines
9.4.2
Layout Example
9.4.3
Thermal Considerations
10
Device and Documentation Support
10.1
Device Support
10.1.1
Development Support
10.1.1.1
Custom Design with WEBENCH® Tools
10.2
Receiving Notification of Documentation Updates
10.3
Support Resources
10.4
Trademarks
10.5
Electrostatic Discharge Caution
10.6
Glossary
11
Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
D|8
MSOI002K
P|8
MPDI001B
散热焊盘机械数据 (封装 | 引脚)
订购信息
snvs118f_oa
snvs118f_pm
1
Features
New product available:
LMR36506 3-V to 65-V 0.6-A ultra-small synchronous buck converter
For faster time to market:
TPSM365R6 3-V to 65-V, 600-mA/300-mA synchronous buck power module
3.3-V, 5-V, 12-V, and adjustable output versions
Adjustable version output voltage range: 1.2 V to 37 V (57-V for the HV version), ±4% maximum over line and load conditions
Available in 8-pin surface-mount SOIC and 8-pin PDIP packages
Ensured 0.5-A output current
Input voltage range up to 60 V
Requires only four external components
150-kHz fixed-frequency internal oscillator
TTL shutdown capability
Low power standby mode, I
Q
typically 85 μA
High efficiency
Uses readily-available standard inductors
Thermal shutdown and current-limit protection
Create a custom design using the
LM2594HV
with the
WEBENCH®
Power Designer
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