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MAX6442KANRSD7-T

更新时间： 2024-10-26 23:50:31
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美信 - MAXIM 电源电路电池电源管理电路光电二极管监控信息通信管理
页数 文件大小 规格书
14页 234K
描述
Low-Power Single-/Dual-Level Battery Monitors with Hysteresis and Integrated µ.P Reset

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MAX6442KANRSD7-T 技术参数

是否无铅： 含铅是否Rohs认证： 不符合
生命周期：Obsolete零件包装代码：SOT-23
包装说明：SOT-23, 8 PIN针数：8
Reach Compliance Code：not_compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.78
其他特性：2.925 RESET THESHOLD VOLTAGE; BATTERY HTH AND LTH ARE 2.4V AND 1.9V可调阈值：NO
模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUITJESD-30 代码：R-PDSO-G8
JESD-609代码：e0长度：2.9 mm
湿度敏感等级：1信道数量：2
功能数量：1端子数量：8
最高工作温度：85 °C最低工作温度：-40 °C
封装主体材料：PLASTIC/EPOXY封装代码：LSSOP
封装等效代码：TSSOP8,.1封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, LOW PROFILE, SHRINK PITCH峰值回流温度（摄氏度）：245
电源：1.2/5 V认证状态：Not Qualified
座面最大高度：1.45 mm子类别：Power Management Circuits
最大供电电压 (Vsup)：5.5 V最小供电电压 (Vsup)：1 V
表面贴装：YES技术：BICMOS
温度等级：INDUSTRIAL端子面层：Tin/Lead (Sn/Pb)
端子形式：GULL WING端子节距：0.65 mm
端子位置：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：1.625 mmBase Number Matches：1

MAX6442KANRSD7-T 数据手册

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19-2535; Rev 0; 7/02  
Low-Power, Single-/Dual-Level Battery Monitors  
with Hysteresis and Integrated µP Reset  
General Description  
Features  
The MAX6439–MAX6442 are a family of ultra-low-power  
battery monitors with integrated microprocessor (µP)  
supervisors. The battery monitors are offered with sin-  
gle or dual low-battery output options that can be used  
to signal when the battery is OK (enabling full system  
operation), when the battery is low (for low-power sys-  
tem operation), and when the battery is dead (to dis-  
able system operation). These devices also have an  
ꢀ Factory-Trimmed V  
Threshold Options for  
BATT  
Monitoring Single-Cell Li+ or Multicell  
Alkaline/NiCd/NiMH Applications  
ꢀ Immune to Short Battery Voltage Transients  
ꢀ Low Current (2.5µA typ at 3.6V)  
ꢀ Single and Dual Low-Battery Output Options  
ꢀ 150ms Minimum LBO Timeout Period  
ꢀ Independent µP Reset with Manual Reset  
independent µP supervisor that monitors V  
and pro-  
CC  
vides an active-low reset output. A manual reset func-  
tion is available to reset the µP with a push-button. No  
external components are required.  
ꢀ Factory-Set Reset Thresholds for Monitoring V  
CC  
The MAX6439–MAX6442 are offered with several facto-  
ry-trimmed low-battery threshold combinations ideal for  
single-cell lithium-ion (Li+) or multicell alkaline/NiCd/  
NiMH applications. When the battery voltage drops  
below each specified low threshold, the low-battery out-  
puts are asserted to alert the system. When the voltage  
rises above the specified high thresholds, the outputs  
are deasserted after a 150ms minimum timeout period,  
ensuring the voltages have stabilized before power cir-  
cuitry is activated or providing microprocessor reset tim-  
ing. The low and high thresholds provide hysteresis in  
battery-operated systems to eliminate output chattering.  
from 1.8V to 3.3V  
ꢀ Available with 150ms (min) and 1.2s (min) V  
CC  
Reset Timeout Period Options  
ꢀ -40°C to +85°C Operating Temperature Range  
ꢀ Small 6- and 8-Pin SOT23 Packages  
ꢀ No External Components  
Ordering Information  
PART  
TEMP RANGE  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
6 SOT23-6  
6 SOT23-6  
8 SOT23-8  
8 SOT23-8  
MAX6439UT_ _ _D_-T  
MAX6440UT_ _ _D_-T  
MAX6441KA_ _ _D_-T  
MAX6442KA_ _ _D_-T  
The MAX6439/MAX6440 offer factory-trimmed battery  
monitors with a single output. The MAX6441/MAX6442  
offer factory-trimmed battery monitors with dual outputs.  
All battery monitors have open-drain low-battery outputs.  
The MAX6439–MAX6442 monitor system voltages  
(V ) from 1.8V to 3.3V with seven fixed reset threshold  
CC  
options. Each device is offered with two minimum reset  
timeout periods of 150ms or 1200ms. The MAX6439/  
MAX6441 are offered with an open-drain RESET output  
and the MAX6440/MAX6442 are offered with a push-  
pull RESET output.  
Note: The first two “_ _” are placeholders for the battery moni-  
tor voltage levels. Desired threshold levels are set by the part  
number suffix found in Tables 1 and 2. The third “_” is the V  
CC  
reset threshold level suffix found in Table 3. The “_” after the D  
is a placeholder for the reset timeout period suffix found in  
Table 4. All devices are available in tape-and-reel only. There  
is a 2500-piece minimum order increment for standard ver-  
sions. Sample stock is typically held on standard versions only.  
Nonstandard versions require a minimum order increment of  
10,000 pieces. Contact factory for availability.  
The MAX6439–MAX6442 are offered in a SOT23 pack-  
age and are fully specified over a -40°C to +85°C temp-  
erature range.  
Pin Configurations  
Applications  
Battery-Powered Systems (Single-Cell Li+ or  
Two-/Three-Cell NiMH, NiCd, Alkaline)  
TOP VIEW  
V
1
2
3
6
5
4
V
CC  
BATT  
MR  
Cell Phones/Cordless Phones  
Portable Medical Devices  
Electronic Toys  
Pagers  
MAX6439  
MAX6440  
GND  
LBO  
RESET  
PDAs  
SOT23-6  
MP3 Players  
Pin Configurations continued at end of data sheet.  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  
1234567...14

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