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TL2843BQDRQ1

更新时间： 2024-09-30 02:58:39
品牌 Logo 应用领域
德州仪器 - TI 开关光电二极管
页数 文件大小 规格书
16页 284K
描述
HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLER

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TL2843BQDRQ1 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：SOIC
包装说明：SOP, SOP14,.25针数：14
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：1 week
风险等级：1.74模拟集成电路 - 其他类型：SWITCHING CONTROLLER
控制模式：CURRENT-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：30 V最小输入电压：12 V
标称输入电压：15 VJESD-30 代码：R-PDSO-G14
JESD-609代码：e4长度：8.65 mm
湿度敏感等级：1功能数量：1
端子数量：14最高工作温度：125 °C
最低工作温度：-40 °C最大输出电流：1 A
最大输出电压：5.05 V最小输出电压：4.95 V
标称输出电压：5 V封装主体材料：PLASTIC/EPOXY
封装代码：SOP封装等效代码：SOP14,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：260认证状态：Not Qualified
筛选级别：AEC-Q100座面最大高度：1.75 mm
子类别：Switching Regulator or Controllers标称供电电压 (Vsup)：15 V
表面贴装：YES切换器配置：SINGLE
最大切换频率：500 kHz温度等级：AUTOMOTIVE
端子面层：Nickel/Palladium/Gold (Ni/Pd/Au)端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：3.9 mm
Base Number Matches：1

TL2843BQDRQ1 数据手册

 浏览型号TL2843BQDRQ1的Datasheet PDF文件第2页浏览型号TL2843BQDRQ1的Datasheet PDF文件第3页浏览型号TL2843BQDRQ1的Datasheet PDF文件第4页浏览型号TL2843BQDRQ1的Datasheet PDF文件第5页浏览型号TL2843BQDRQ1的Datasheet PDF文件第6页浏览型号TL2843BQDRQ1的Datasheet PDF文件第7页 
TL2843B-Q1  
www.ti.com  
SLVSAE2A –JULY 2010–REVISED FEBRUARY 2012  
HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLER  
Check for Samples: TL2843B-Q1  
1
FEATURES  
•
•
•
•
•
•
Qualified for Automotive Applications  
Low Start-Up Current (<0.5 mA)  
Trimmed Oscillator Discharge Current  
Current Mode Operation to 500 kHz  
Automatic Feed-Forward Compensation  
Latching PWM for Cycle-by-Cycle Current  
Limiting  
•
•
•
Internally Trimmed Reference With  
Undervoltage Lockout  
High-Current Totem-Pole Output Undervoltage  
Lockout With Hysteresis  
Double-Pulse Suppression  
DESCRIPTION  
The TL284xB series of control integrated circuits provide the features that are necessary to implement off-line or  
dc-to-dc fixed-frequency current-mode control schemes, with a minimum number of external components.  
Internally implemented circuits include an undervoltage lockout (UVLO) and a precision reference that is trimmed  
for accuracy at the error amplifier input. Other internal circuits include logic to ensure latched operation, a  
pulse-width modulation (PWM) comparator that also provides current-limit control, and a totem-pole output stage  
designed to source or sink high-peak current. The output stage, suitable for driving N-channel MOSFETs, is low  
when it is in the off state.  
The TL284xB series are pin compatible with the standard TL284x with the following improvements. The start-up  
current is specified to be 0.5 mA (max), while the oscillator discharge current is trimmed to 8.3 mA (typ). In  
addition, during undervoltage lockout conditions, the output has a maximum saturation voltage of 1.2 V while  
sinking 10 mA (VCC = 5 V).  
Major differences between members of these series are the UVLO thresholds and maximum duty-cycle ranges.  
Typical UVLO thresholds of 16 V (on) and 10 V (off) on the TL2842B and TL2844B devices make them ideally  
suited to off-line applications. The corresponding typical thresholds for the TL2843B and TL2845B devices are  
8.4 V (on) and 7.6 V (off). The TL2842B and TL2843B devices can operate to duty cycles approaching 100%. A  
duty-cycle range of 0% to 50% is obtained by the TL2844B and TL2845B by the addition of an internal toggle  
flip-flop, which blanks the output off every other clock cycle.The TL284xB-series devices are characterized for  
operation from –40°C to 125°C.  
Table 1. ORDERING INFORMATION(1)  
TA  
PACKAGE(2)  
ORDERABLE PART NUMBER  
TL2842BQDRQ1  
TOP-SIDE MARKING  
Product Preview  
TL2843BQ  
TL2843BQDRQ1  
–40°C to 125°C  
SOIC – D  
Reel of 2500  
TL2844BQDRQ1  
Product Preview  
Product Preview  
TL2845BQDRQ1  
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI  
web site at www.ti.com.  
(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 2010–2012, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
 
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TL2843BQDRQ1 替代型号

型号 品牌 替代类型 描述 数据表
UC3842DG4 TI

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