ZHCSGU1C September 2017 – October 2021 LM5150-Q1
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
-
8 Detailed Description
- 8.1 Overview
- 8.2 Functional Block Diagram
- 8.3
Feature Description
- 8.3.1 Enable (EN Pin)
- 8.3.2 High Voltage VCC Regulator (PVCC, AVCC Pin)
- 8.3.3 Power-On Voltage Selection (VSET Pin)
- 8.3.4 Switching Frequency (RT Pin)
- 8.3.5 Clock Synchronization (SYNC Pin in SS Configuration)
- 8.3.6 Current Sense, Slope Compensation, and PWM (CS Pin)
- 8.3.7 Current Limit (CS Pin)
- 8.3.8 Feedback and Error Amplifier (COMP Pin)
- 8.3.9 Automatic Wake-Up and Standby
- 8.3.10 Boost Status Indicator (STATUS Pin)
- 8.3.11 Maximum Duty Cycle Limit, Minimum Input Supply Voltage
- 8.3.12 MOSFET Driver (LO Pin)
- 8.3.13 Thermal Shutdown
- 8.4 Device Functional Modes
-
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 Custom Design With WEBENCH® Tools
- 9.2.2.2 RSET Resistor
- 9.2.2.3 RT Resistor
- 9.2.2.4 Inductor Selection (LM)
- 9.2.2.5 Current Sense (RS)
- 9.2.2.6 Slope Compensation Ramp (RSL)
- 9.2.2.7 Output Capacitor (COUT)
- 9.2.2.8 Loop Compensation Component Selection and Maximum ESR
- 9.2.2.9 PVCC Capacitor, AVCC Capacitor, and AVCC Resistor
- 9.2.2.10 VOUT Filter (CVOUT, RVOUT)
- 9.2.2.11 Input Capacitor
- 9.2.2.12 MOSFET Selection
- 9.2.2.13 Diode Selection
- 9.2.2.14 Efficiency Estimation
- 9.2.3 Application Curves
- 9.3 System Examples
- 10Power Supply Recommendations
- 11Layout
- 12Device and Documentation Support
- 13Mechanical, Packaging, and Orderable Information
3 说明
LM5150-Q1 器件是宽输入范围自动升压控制器。该器件适合用作预升压转换器，在汽车启动期间维持汽车电池的输出电压，或在缺少汽车电池期间维持备用电池的输出电压。
可以通过一个电阻器在 220kHz 与 2.3MHz 之间对 LM5150-Q1 开关频率进行编程。快速开关频率 (≥ 2.2MHz) 可更大限度地降低调幅频带干扰，并支持实现小解决方案尺寸和快速瞬态响应。
LM5150-Q1 在输入或输出电压高于预设待机阈值时以低 IQ 待机模式运行，并且在输出电压降至预设唤醒阈值以下时自动唤醒。
处于或未处于低 IQ 待机模式的器件瞬态，可在轻负载下延长电池寿命。单个电阻器对目标输出稳定电压以及配置进行编程。其他特性包括低关断电流、升压状态指示器、可调逐周期电流限制和热关断。
器件信息
| 器件型号 | 封装(1) | 封装尺寸（标称值） |
|---|---|---|
| LM5150-Q1 | WQFN (16) | 4.00mm × 4.00mm |
(1) 如需了解所有可用封装，请参阅数据表末尾的可订购米6体育平台手机版_好二三四附录。
典型应用电路
效率（VLOAD= 6.8V，FSW= 440kHz）