ZHCSHC3B
january 2018 – june 2023
TPS61280D
,
TPS61280E
,
TPS61281D
PRODUCTION DATA
1
1
特性
2
应用
3
说明
4
Revision History
5
说明(续)
6
Device Comparison Table
7
Pin Configuration and Functions
8
Specifications
8.1
Absolute Maximum Ratings
8.2
ESD Ratings
8.3
Recommended Operating Conditions
8.4
Thermal Information
8.5
Electrical Characteristics
8.6
I2C Interface Timing Characteristics #GUID-BD85FD7C-B9AF-4F5D-9DFF-CD61365A592A/SLVS5401494
8.7
I2C Timing Diagrams
8.8
Typical Characteristics
9
Detailed Description
9.1
Overview
9.2
Functional Block Diagram
9.3
Feature Description
9.3.1
Voltage Scaling Management (VSEL)
9.3.2
Spread Spectrum, PWM Frequency Dithering
9.4
Device Functional Modes
9.4.1
Power-Save Mode
9.4.2
Pass-Through Mode
9.4.3
Mode Selection
9.4.4
Current Limit Operation
9.4.5
Start-Up and Shutdown Mode
9.4.6
Undervoltage Lockout
9.4.7
Thermal Shutdown
9.4.8
Fault State and Power-Good
9.5
Programming
9.5.1
Serial Interface Description (TPS61280D/E)
9.5.2
Standard-, Fast-, Fast-Mode Plus Protocol
9.5.3
HS-Mode Protocol
9.5.4
TPS6128xD/E I2C Update Sequence
9.6
Register Maps
9.6.1
Slave Address Byte
9.6.2
Register Address Byte
9.6.3
I2C Registers, E2PROM, Write Protect
9.6.4
E2PROM Configuration Parameters
9.6.5
CONFIG Register [reset = 0x01]
9.6.6
VOUTFLOORSET Register [reset = 0x02]
9.6.7
VOUTROOFSET Register [reset = 0x03]
9.6.8
ILIMSET Register [reset = 0x04]
9.6.9
Status Register [reset = 0x05]
9.6.10
E2PROMCTRL Register [reset = 0xFF]
10
Application and Implementation
10.1
Application Information
10.2
Typical Application
10.2.1
TPS61281D with 2.5V-4.35 VIN, 1500 mA Output Current (TPS61280D with default I2C Configuration)
10.2.1.1
Design Requirement
10.2.1.2
Detailed Design Parameters
10.2.1.2.1
Inductor Selection
10.2.1.2.2
Output Capacitor
10.2.1.2.3
Input Capacitor
10.2.1.2.4
Checking Loop Stability
10.2.1.3
Application Performance Curves
10.2.2
TPS61282D with 2.5V-4.35 VIN, 2000 mA Output Current (TPS61280D with I2C Programmable)
10.2.2.1
Design Requirements
10.2.2.2
Detailed Design Procedures
10.2.2.3
Application Performance Curves
11
Power Supply Recommendations
12
Layout
12.1
Layout Guidelines
12.2
Layout Example
12.3
Thermal Information
13
Device and Documentation Support
13.1
Device Support
13.1.1
第三方产品免责声明
13.2
接收文档更新通知
13.3
支持资源
13.4
Trademarks
13.5
静电放电警告
13.6
术语表
14
Mechanical, Packaging, and Orderable Information
14.1
Package Summary
封装选项
机械数据 (封装 | 引脚)
YFF|16
MXBG096W
散热焊盘机械数据 (封装 | 引脚)
订购信息
zhcshc3b_oa
zhcshc3b_pm
1
特性
频率为 2.3MHz 时,工作效率达 95%
低 I
Q
直通模式下具有 3µA 静态电流
2.3V 至 4.8V 的宽 V
IN
范围
V
OUT
= 3.35V 且 V
IN
≥ 2.65V 时,I
OUT
≥ 4A(峰值)
集成直通模式 (35mΩ)
可编程谷值电感器电流限值和输出电压
关断期间进入真正的直通模式
出色的
线路和负载瞬态
低纹波轻负载 PFM 模式
具有片上 E
2
PROM(写保护)的原样定制
两个接口选项:
与 I
2
C 兼容的 I/F:高达 3.4Mbps (TPS61280D/E)
简单的 I/O 逻辑控制接口
热关断和过载保护
总解决方案尺寸 < 20mm
2
,规格:小于 1mm