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TL3842BP

更新时间： 2024-02-21 00:20:21
品牌 Logo 应用领域
德州仪器 - TI 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
页数 文件大小 规格书
21页 339K
描述
HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS

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TL3842BP 技术参数

生命周期：Obsolete零件包装代码：DIE
包装说明：DIE,针数：8
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.72
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：25 V
最小输入电压：12 V标称输入电压：15 V
JESD-30 代码：X-XUUC-N8功能数量：1
端子数量：8最高工作温度：70 °C
最低工作温度：最大输出电流：1 A
封装主体材料：UNSPECIFIED封装代码：DIE
封装形状：UNSPECIFIED封装形式：UNCASED CHIP
认证状态：Not Qualified表面贴装：YES
最大切换频率：500 kHz温度等级：COMMERCIAL
端子形式：NO LEAD端子位置：UPPER
Base Number Matches：1

TL3842BP 数据手册

 浏览型号TL3842BP的Datasheet PDF文件第2页浏览型号TL3842BP的Datasheet PDF文件第3页浏览型号TL3842BP的Datasheet PDF文件第4页浏览型号TL3842BP的Datasheet PDF文件第5页浏览型号TL3842BP的Datasheet PDF文件第6页浏览型号TL3842BP的Datasheet PDF文件第7页 
TL284xB, TL384xB  
HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS  
www.ti.com  
SLVS610A–AUGUST 2006–REVISED SEPTEMBER 2006  
FEATURES  
D (SOIC) OR P (PDIP) PACKAGE  
(TOP VIEW)  
•
•
•
•
•
Low Start-Up Current (<0.5 mA)  
Trimmed Oscillator Discharge Current  
Current Mode Operation to 500 kHz  
Automatic Feed-Forward Compensation  
COMP  
VFB  
V
V
1
2
3
4
8
7
6
5
REF  
CC  
I
OUTPUT  
GND  
SENSE  
Latching PWM for Cycle-by-Cycle Current  
Limiting  
R /C  
T
T
•
•
•
Internally Trimmed Reference With  
Undervoltage Lockout  
D (SOIC) PACKAGE  
(TOP VIEW)  
High-Current Totem-Pole Output  
Undervoltage Lockout With Hysteresis  
COMP  
NC  
1
2
3
4
5
6
7
14  
13  
12  
11  
10  
9
V
REF  
NC  
V
Double-Pulse Suppression  
VFB  
NC  
CC  
VC  
OUTPUT  
I
SENSE  
GND  
NC  
8
R /C  
POWER GROUND  
T
T
NC − No internal connection  
DESCRIPTION/ORDERING INFORMATION  
The TL284xB and TL384xB 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 and TL384xB series are pin compatible with the standard TL284x and TL384x 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 TLx842B and TLx844B devices make them ideally  
suited to off-line applications. The corresponding typical thresholds for the TLx843B and TLx845B devices are  
8.4 V (on) and 7.6 V (off). The TLx842B and TLx843B devices can operate to duty cycles approaching 100%. A  
duty-cycle range of 0% to 50% is obtained by the TLx844B and TLx845B 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 85°C. The TL384xB-series devices are characterized for operation from 0°C to 70°C.  
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 © 2006, 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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TL3842BP 替代型号

型号 品牌 替代类型 描述 数据表
TL2842BP TI

完全替代

 HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
TL3842BPE4 TI

完全替代

 HIGH-PERFORMANCE CURRENT-MODE PWM CONTROLLERS
UC2842J TI

完全替代

 Current Mode PWM Controller

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