ZHCSIY0
October 2018
TPS92515AHV-Q1
PRODUCTION DATA.
1
特性
2
应用
3
说明
简化的降压 LED 驱动器应用
4
修订历史记录
5
Device Comparison Table
6
Pin Configuration and Functions
Pin Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics
7.6
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
General Operation
8.3.2
Current Sense Comparator
8.3.3
OFF Timer
8.3.4
OFF-Timer, Shunt FET Dimming or Shunted Output Condition
8.3.5
Internal N-channel MOSFET
8.3.5.1
Drop-Out
8.3.6
VCC Internal Regulator and Undervoltage Lockout (UVLO)
8.3.7
Analog Adjust Input
8.3.7.1
IADJ Pin Clamp
8.3.7.2
IADJ Pin Clamp Characteristic
8.3.7.3
Analog Adjust (IADJ Pin) Control Methods
8.3.7.4
IADJ Control Method Notes
8.3.8
Thermal Protection
8.3.8.1
Maximum Output Current and Junction Temperature
8.3.9
Junction Temperature Relative Estimation
8.3.10
BOOT and BOOT UVLO
8.3.10.1
Start-Up, BOOT-UVLO and Pre-Charged Condition
8.3.11
PWM (UVLO and Enable)
8.3.11.1
Using PWM for UVLO (Undervoltage Lockout) Protection
8.3.11.1.1
UVLO Programming Resistors
8.3.11.2
Using PWM for Digitally Controlled Enable
8.3.11.3
UVLO: VIN, VCC and BOOT UVLO
8.3.11.4
Analog and PWM Dimming - Normalized Results and Comparison
8.4
Device Functional Modes
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
General Design Procedure
9.2.1.1
Calculating Duty Cycle
9.2.1.2
Calculate OFF-Time Estimate
9.2.1.3
Calculate OFF-Time Resistor ROFF
9.2.1.4
Calculate the Minimum Inductance Value
9.2.1.5
Calculate the Sense Resistance
9.2.1.6
Calculate Input Capacitance
9.2.1.7
Calculate Output Capacitance
9.2.2
Design Requirements
9.2.3
Detailed Design Procedure
9.2.3.1
Calculating Duty Cycle
9.2.3.2
Calculate OFF-Time Estimate
9.2.3.3
Calculate OFF-Time Resistor ROFF
9.2.3.4
Calculate the Inductance Value
9.2.3.5
Calculate the Sense Resistance
9.2.3.6
Calculate Input Capacitance
9.2.3.7
Verify Peak Current for Inductor Selection
9.2.3.8
Calculate Output Capacitance
9.2.3.9
Calculate UVLO Resistance Values
9.2.4
Application Curves
9.3
Dos and Don'ts
10
Power Supply Recommendations
10.1
Input Source Direct from Battery
10.2
Input Source from a Boost Stage
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
器件和文档支持
12.1
文档支持
12.1.1
相关文档
12.1.1.1
相关链接
12.2
接收文档更新通知
12.3
社区资源
12.4
商标
12.5
静电放电警告
12.6
术语表
13
机械、封装和可订购信息
封装选项
机械数据 (封装 | 引脚)
DGQ|10
MPDS043F
散热焊盘机械数据 (封装 | 引脚)
DGQ|10
PPTD304B
订购信息
zhcsiy0_oa
1
特性
符合 AEC-Q100 1 级标准
集成 290mΩ(典型值)内部 N 沟道场效应晶体管 (FET)
输入电压范围
TPS92515AHVx:5.5V 至 65V
启动后工作电压低至 5.15V
低偏移高侧峰值电流比较器
高达 2A 的恒定平均电流
固有逐周期电流限制
多种调光方法
10,000:1 分流脉宽调制 (PWM) 调光范围
1000:1 PWM 调光范围
200:1 模拟调光范围
简单的恒定关断时间控制
无环路补偿
快速瞬态响应
散热增强型 HVSSOP 封装
集成热保护
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