ZHCSKN9B
December 2019 – December 2022
LMR36506
PRODUCTION DATA
1
特性
2
应用
3
说明
4
Revision History
5
Device Comparison Table
6
Pin Configuration and Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD (Commercial) Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics
7.6
Timing Characteristics
7.7
Switching Characteristics
7.8
System Characteristics
7.9
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Enable, Start-up, and Shutdown
8.3.2
Adjustable Switching Frequency (with RT)
8.3.3
Power-Good Output Operation
8.3.4
Internal LDO, VCC UVLO, and VOUT/BIAS Input
8.3.5
Bootstrap Voltage and VCBOOT-UVLO (CBOOT Terminal)
8.3.6
Output Voltage Selection
8.3.7
Soft Start and Recovery from Dropout
8.3.7.1
Recovery from Dropout
8.3.8
Current Limit and Short Circuit
8.3.9
Thermal Shutdown
8.3.10
Input Supply Current
8.4
Device Functional Modes
8.4.1
Shutdown Mode
8.4.2
Standby Mode
8.4.3
Active Mode
8.4.3.1
CCM Mode
8.4.3.2
Auto Mode - Light Load Operation
8.4.3.2.1
Diode Emulation
8.4.3.2.2
Frequency Reduction
8.4.3.3
FPWM Mode - Light Load Operation
8.4.3.4
Minimum On-time (High Input Voltage) Operation
8.4.3.5
Dropout
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Choosing the Switching Frequency
9.2.2.2
Setting the Output Voltage
9.2.2.2.1
FB for Adjustable Output
9.2.2.3
Inductor Selection
9.2.2.4
Output Capacitor Selection
9.2.2.5
Input Capacitor Selection
9.2.2.6
CBOOT
9.2.2.7
VCC
9.2.2.8
CFF Selection
9.2.2.8.1
External UVLO
9.2.2.9
Maximum Ambient Temperature
9.2.3
Application Curves
9.3
Best Design Practices
9.4
Power Supply Recommendations
9.5
Layout
9.5.1
Layout Guidelines
9.5.1.1
Ground and Thermal Considerations
9.5.2
Layout Example
10
Device and Documentation Support
10.1
Documentation Support
10.1.1
Related Documentation
10.2
接收文档更新通知
10.3
支持资源
10.4
Trademarks
10.5
Electrostatic Discharge Caution
10.6
术语表
11
Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
RPE|9
MPQF528A
散热焊盘机械数据 (封装 | 引脚)
RPE|9
QFND682A
订购信息
zhcskn9b_oa
zhcskn9b_pm
1
特性
专用于条件严苛的工业应用:
结温范围:–40°C 至 +150°C
高达 70V 的输入瞬态保护
宽输入电压范围:3.0V(下降阈值)至 65V
低 EMI 和超低的开关节点振铃
提供可调的固定输出电压选项
适用于可扩展的工业电源:
与
LMR36503
(65V、300mA)引脚兼容
可调开关频率:200kHz 至 2.2MHz(采用 RT 引脚型号时)
减小了解决方案尺寸并降低了成本:
功率密度超高,具有内部补偿并减少了外部组件数量
具有可湿性侧面的超小型 2mm × 2mm
HotRod™
封装
在整个负载范围内具有高效率和低功率耗散:
400kHz 时峰值效率为 93%(输入电压 12V 和输出电压 3.3V 固定)
400kHz 时峰值效率为 90%(输入电压 24V 和输出电压 3.3V 固定)
空载时工作静态电流很低
在 V
IN
为 24V 和 V
OUT
为 3.3V(固定输出选项)时为 4µA
使用
TPSM365R6
模块缩短产品上市时间