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TK65025M

更新时间： 2024-11-19 22:32:35
品牌 Logo 应用领域
TOKO 转换器电源电路电源管理电路光电二极管监控监视器升压转换器
页数 文件大小 规格书
12页 110K
描述
STEP-UP VOLTAGE CONVERTER WITH VOLTAGE MONITOR

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中文翻译

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TK65025M 技术参数

是否Rohs认证： 不符合生命周期：Transferred
包装说明：LSSOP,Reach Compliance Code：unknown
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.79Is Samacsys：N
模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUITJESD-30 代码：R-PDSO-G6
长度：3.4 mm信道数量：1
功能数量：1端子数量：6
封装主体材料：PLASTIC/EPOXY封装代码：LSSOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：NOT SPECIFIED认证状态：Not Qualified
座面最大高度：1.4 mm表面贴装：YES
端子形式：GULL WING端子节距：0.95 mm
端子位置：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：2.2 mmBase Number Matches：1

TK65025M 数据手册

 浏览型号TK65025M的Datasheet PDF文件第2页浏览型号TK65025M的Datasheet PDF文件第3页浏览型号TK65025M的Datasheet PDF文件第4页浏览型号TK65025M的Datasheet PDF文件第5页浏览型号TK65025M的Datasheet PDF文件第6页浏览型号TK65025M的Datasheet PDF文件第7页 
TK65025  
STEP-UP VOLTAGE CONVERTER WITH VOLTAGE MONITOR  
APPLICATIONS  
■ Battery Powered Systems  
FEATURES  
■ Guaranteed 0.9 V Operation  
■ Very Low Quiescent Current  
■ Internal Bandgap Reference  
■ High Efficiency MOS Switching  
■ Low Output Ripple  
■ Cellular Telephones  
■ Pagers  
■ Personal Communications Equipment  
■ Portable Instrumentation  
■ Portable Consumer Equipment  
■ Radio Control Systems  
■ Microprocessor Reset Output  
■ Laser-Trimmed Output Voltage  
■ Laser-Trimmed Oscillator  
■ Undervoltage Lockout  
■ Regulation by Pulse Burst Modulation (PBM)  
2
DESCRIPTION  
achieve high reliability through the use of Oxide, double  
Nitride passivation. The TK65025 is available in a very  
small plastic surface mount package. (SOT-23L)  
Customized levels of accuracy in oscillator frequency  
and output voltage are available.  
TheTK65025LowPowerStep-UpDC-DCconverteris  
designed for portable battery-powered systems, capable  
of operating from a single battery cell down to 0.9 V. The  
TK65025 provides the power switch and the control circuit  
for a boost converter. The converter takes a DC input and  
boosts it up to 3 volts. This regulated 3 volt output is  
typically used to supply power to a microprocessor-con-  
trolled system.  
The output voltage is laser-trimmed to 3.0 V. An  
TK65025M  
internal detector monitors the output voltage and provides  
an active-low microprocessor reset signal whenever the  
output voltage falls below an internally preset limit. An  
internal undervoltage lockout circuit is utilized to prevent  
the inductor switch from remaining in the "ON" mode when  
the battery voltage is too low to permit normal operation.  
Pulse burst modulation (PBM) is used to regulate the  
V
1
2
6
5
4
RESET  
GND  
IN  
M25  
GND  
V
IND 3  
OUT  
voltage at the V  
pin at the IC. PBM is the process in  
OUT  
which an oscillator signal is gated or not gated to the switch  
drive each period. The decision is made just before the  
start of each cycle and is based on comparing the output  
voltagetoaninternally-generatedbandgapreference. The  
decisionislatched, sothedutyratioisnotmodulatedwithin  
a cycle. The average duty ratio is effectively modulated by  
the "bursting" and skipping of pulses which can be seen at  
the IND pin of the IC. Special care has been taken to  
BLOCK DIAGRAM  
V
IND  
OUT  
3
4
ORDERING INFORMATION  
VREF  
UVLO  
TK65025M  
CONTROL  
CIRCUIT  
V
RESET  
IN  
1
6
Tape/Reel Code  
RC OSC.  
2,5  
GND  
TAPE/REEL CODE  
BX : Bulk/Bag  
TL : Tape Left  
February, 1997 Toko, Inc.  
Page 1  
1234567...12

中文翻译

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