ZHCSM05 June 2020 LM51561H-Q1 , LM5156H-Q1
PRODUCTION DATA
- 1 特性
- 2 應用
- 3 說明
- 4 Revision History
- 5 說明（續）
- 6 Device Comparison Table
- 7 Pin Configuration and Functions
- 8 Specifications
-
9 Detailed Description
- 9.1 Overview
- 9.2 Functional Block Diagram
- 9.3
Feature Description
- 9.3.1 Line Undervoltage Lockout (UVLO/SYNC/EN Pin)
- 9.3.2 High Voltage VCC Regulator (BIAS, VCC Pin)
- 9.3.3 Soft Start (SS Pin)
- 9.3.4 Switching Frequency (RT Pin)
- 9.3.5 Dual Random Spread Spectrum (DRSS)
- 9.3.6 Clock Synchronization (UVLO/SYNC/EN Pin)
- 9.3.7 Current Sense and Slope Compensation (CS Pin)
- 9.3.8 Current Limit and Minimum On-time (CS Pin)
- 9.3.9 Feedback and Error Amplifier (FB, COMP Pin)
- 9.3.10 Power-Good Indicator (PGOOD Pin)
- 9.3.11 Hiccup Mode Overload Protection (LM51561H-Q1 Only)
- 9.3.12 Maximum Duty Cycle Limit and Minimum Input Supply Voltage
- 9.3.13 MOSFET Driver (GATE Pin)
- 9.3.14 Overvoltage Protection (OVP)
- 9.3.15 Thermal Shutdown (TSD)
- 9.4 Device Functional Modes
- 10Application and Implementation
- 11Power Supply Recommendations
- 12Layout
- 13Device and Documentation Support
- 14Mechanical, Packaging, and Orderable Information
3 說明
LM5156xH-Q1（LM5156H-Q1 和 LM51561H-Q1）器件是采用峰值電流模式控制、具有寬輸入范圍的非同步升壓控制器。該器件可用于升壓、SEPIC 和反激式拓撲。
如果 BIAS 引腳連接到 VCC 引腳，該器件可由單節電池（最低電壓 2.97V）啟動。如果 BIAS 引腳電壓高于 3.5V，則該器件可使用低至 1.5V 的輸入電源電壓。
器件信息
| 器件型號 | 封裝(1) | 封裝尺寸（標稱值） |
|---|---|---|
| LM5156xH-Q1 | HTSSOP (14) | 5.0mm × 4.4mm |
(1) 如需了解所有可用封裝，請參閱數據表末尾的可訂購產品附錄。
典型升壓應用