ZHCSE71I
september 2015 – august 2023
SN6505A
,
SN6505B
PRODUCTION DATA
1
1
特性
2
应用
3
说明
4
Revision History
5
Pin Configuration and 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 Requirements
6.7
Typical Characteristics, SN6505A
6.8
Typical Characteristics, SN6505B
7
Parameter Measurement Information
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Push-Pull Converter
8.3.2
Core Magnetization
8.4
Device Functional Modes
8.4.1
Start-Up Mode
8.4.1.1
Soft-Start
8.4.2
Operating Mode
8.4.3
Shutdown-Mode
8.4.4
Spread Spectrum Clocking
8.4.5
External Clock Mode
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
Drive Capability
9.2.2.2
LDO Selection
9.2.2.3
Diode Selection
9.2.2.4
Capacitor Selection
9.2.2.5
Transformer Selection
9.2.2.5.1
V-t Product Calculation
9.2.2.5.2
Turns Ratio Estimate
9.2.2.5.3
Recommended Transformers
9.2.3
Application Curves
9.2.4
System Examples
9.2.4.1
Higher Output Voltage Designs
9.2.4.2
Application Circuits
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
Device and Documentation Support
12.1
Device Support
12.2
Documentation Support
12.2.1
Related Documentation
12.3
Related Links
12.4
Receiving Notification of Documentation Updates
12.5
Community Resources
12.6
Trademarks
13
Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
DBV|6
MPDS026Q
散热焊盘机械数据 (封装 | 引脚)
订购信息
zhcse71i_oa
zhcse71i_pm
1
特性
用于变压器的推挽式驱动器
宽输入电压范围:2.25V 至 5.5V
高输出驱动:5V 电源下为 1A
低 R
ON
,4.5V 电源时的最大值为 0.25Ω
超低 EMI
扩频时钟
精密内部振荡器选项:160kHz (
SN6505A
) 和 420kHz (
SN6505B
)
通过外部时钟输入同步多个器件
转换率控制
1.7A 限流
低关断电流:< 1μA
热关断
宽温度范围:-55°C 至 125°C
小型 6 引脚 SOT23 (DBV) 封装
支持软启动,可减小浪涌电流
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