ZHCSMC1B october 2020 – august 2023 LM5157-Q1 , LM51571-Q1
PRODUCTION DATA
- 1
- 1 特性
- 2 應(yīng)用
- 3 說明
- 4 Revision History
- 5 說明（續(xù)）
- 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 (MODE Pin)
- 9.3.6 Clock Synchronization (UVLO/SYNC/EN Pin)
- 9.3.7 Current Sense and Slope Compensation
- 9.3.8 Current Limit and Minimum On Time
- 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 (MODE Pin)
- 9.3.12 Maximum Duty Cycle Limit and Minimum Input Supply Voltage
- 9.3.13 Internal MOSFET (SW 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)
- RTE|16
散熱焊盤機(jī)械數(shù)據(jù) (封裝 | 引腳)
- RTE|16
訂購(gòu)信息
3 說明
LM5157x-Q1 器件是一款具有集成式 50V、6.5A (LM5157-Q1) 或 50V、4.33A (LM51571-Q1) 電源開關(guān)和寬輸入范圍的非同步升壓轉(zhuǎn)換器。
該器件可用于升壓、SEPIC 和反激式拓?fù)?。該器件可由電壓至少?2.9V 的單節(jié)電池啟動(dòng)。如果 BIAS 引腳的電壓高于 2.9V，該器件可在低至 1.5V 的輸入電源電壓下運(yùn)行。
器件信息
| 器件型號(hào) | 封裝(1) | 封裝尺寸（標(biāo)稱值） |
|---|---|---|
| LM5157-Q1 | WQFN (16) | 3.00mm × 3.00mm |
| LM51571-Q1 |
(1) 如需了解所有可用封裝，請(qǐng)參閱數(shù)據(jù)表末尾的可訂購(gòu)產(chǎn)品附錄。
典型 SEPIC 應(yīng)用