ZHCSN85 January 2021 LM5156 , LM51561
PRODUCTION DATA
- 1 特性
- 2 應(yīng)用
- 3 說明
- 4 Revision History
- 5 Description (continued)
- 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 (LM51561 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
封裝選項(xiàng)
機(jī)械數(shù)據(jù) (封裝 | 引腳)
- DSS|12
散熱焊盤機(jī)械數(shù)據(jù) (封裝 | 引腳)
- DSS|12
訂購信息
3 說明
LM5156x（LM5156 和 LM51561）器件是一款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?fù)洹?/p>
如果 BIAS 引腳連接到 VCC 引腳，則 LM5156x 器件可由單節(jié)電池（最低電壓 2.97V）供電。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(biāo)稱值） |
|---|---|---|
| LM5156 | WSON (12) | 3.00mm × 2.00mm |
| LM51561 |
(1) 如需了解所有可用封裝，請參閱數(shù)據(jù)表末尾的可訂購產(chǎn)品附錄。
典型升壓應(yīng)用