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TK65426MTL

更新时间： 2024-11-11 22:36:39
品牌 Logo 应用领域
TOKO 转换器电源电路电池电源管理电路监视器光电二极管
页数 文件大小 规格书
28页 758K
描述
STEP-DOWN CONVERTER WITH BATTERY MONITOR

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中文翻译

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TK65426MTL 技术参数

是否Rohs认证：不符合生命周期：Obsolete
包装说明：LSSOP,Reach Compliance Code：unknown
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.92Is Samacsys：N
模拟集成电路 - 其他类型：BATTERY CHARGE CONTROLLER控制模式：VOLTAGE-MODE
控制技术：PULSE FREQUENCY MODULATION最大输入电压：6 V
最小输入电压：2 V标称输入电压：5 V
JESD-30 代码：R-PDSO-G6长度：3.4 mm
功能数量：1端子数量：6
最高工作温度：80 °C最低工作温度：-20 °C
最大输出电流：0.1 A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切换器配置：BUCK
温度等级：COMMERCIAL EXTENDED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 mm
Base Number Matches：1

TK65426MTL 数据手册

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TK654xx  
ADVANCED  
INFORMATION  
STEP-DOWN CONVERTER WITH BATTERY MONITOR  
FEATURES  
APPLICATIONS  
■ Minimum External Component Count (1 coil, 1 cap)  
■ Miniature 6 Pin SOT23L-6 Surface Mount Package  
■ Up To 95% Efficient  
■ Battery Powered Systems  
■ Cellular Telephones  
■ Pagers  
■ Personal Communications Equipment  
■ Radio Controlled Systems  
■ Toys  
■ Extremely Low Operating Current (24 µA)  
■ Low Quiescent Current (18 µA)  
■ Low Ripple  
■ Fast Transient Response  
Driving the SB pin low will disable the TK654xx and drop  
the quiescent current on the input supply to approximately  
18 µA.  
■ Linear Dropout Characteristics  
■ Short Circuit Protection  
■ Regulates Down to 1.8 V  
Pulse Current Amplitude control is used to regulate the  
voltage at the VOUT pin of the IC. When the output voltage  
of the TK654xx drops below the regulation threshold, a  
current pulse is transferred from the input supply to the  
output. TheTK654xxutilizesaproprietarycontrolscheme,  
where the average amplitude of the current pulse is varied  
depending upon the current loads. The proprietary  
architecture allows fast transient response and minimal  
ripple while maintaining ease-of-use and low component  
count.  
■ Synchronous Rectification  
■ Internal Battery Monitor  
DESCRIPTION  
The TK654xx low power step-down converter is designed  
for portable battery systems, capable of operating from a  
singleLi-ionbatterycell ormultiplealkalineorrechargeable  
(NiCd or NiMH) battery cells (up to 6 V). The TK654xx  
provides the power switch, synchronous rectifier, and the  
control circuit for a buck step-down converter. Only two  
external components are required to complete the step-  
down conversion.  
The TK654xx is available in a miniature 6-pin SOT23L-6  
surface mount package.  
TK654xxM  
The TK654xx provides laser-trimmed output voltages  
ranging from 1.8 V to 3.3 V. The low resistance MOSFET  
switch and synchronous rectifier allow average currents  
up to 200 mA, while maintaining peak efficiencies up to  
95%. A low-battery threshold and turn-off threshold can  
be individually programmed by the user, utilizing a single  
resistor divider connected to the Low Battery Input (LBI)  
pin. When the resistively-divided supply voltage on the  
LBIpindropsbelowapproximately1.22V, theLowBattery  
Output (LBO) pin will become asserted. The dual-function  
LBI pin can alternatively be used as a Standby (SB) pin.  
LBO  
LBI/SB  
GND  
V
OUT  
SW  
V
IN  
BLOCK DIAGRAM  
V
IN  
ORDERING INFORMATION  
TK654xxM  
CONTROL  
CIRCUIT  
V
SW  
OUT  
GND  
Tape/Reel Code  
REF  
OFF  
LBO  
Voltage Code  
BATTERY  
MONITOR  
LBO  
LBI/SB  
VOLTAGE CODE  
TAPE/REEL CODE  
27 = 2.7 V  
18 = 1.8 V  
21 = 2.1 V  
24 = 2.4 V  
25 = 2.5 V  
TL: Tape Left  
30 = 3.0 V  
33 = 3.3 V  
September 1999 TOKO, Inc.  
Page 1  
1234567...28

中文翻译

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