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MAX6442KAFHWD7+T

更新时间： 2024-11-23 13:57:39
品牌 Logo 应用领域
美信 - MAXIM 信息通信管理光电二极管
页数 文件大小 规格书
14页 247K
描述
Power Supply Support Circuit, Fixed, 2 Channel, BICMOS, PDSO8, SOT-23, 8 PIN

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MAX6442KAFHWD7+T 技术参数

是否无铅：不含铅是否Rohs认证：符合
生命周期：Obsolete零件包装代码：SOT-23
包装说明：LSSOP, TSSOP8,.1针数：8
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.71
Is Samacsys：N其他特性：1.665 RESET THESHOLD VOLTAGE; BATTERY HTH AND LTH ARE 3.4V AND 3.1V
可调阈值：NO模拟集成电路 - 其他类型：POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码：R-PDSO-G8长度：2.9 mm
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）：260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：40
宽度：1.625 mmBase Number Matches：1

MAX6442KAFHWD7+T 数据手册

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19-2535; Rev 1; 12/05  
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  
Note: The first two “_ _” are placeholders for the battery moni-  
(V ) from 1.8V to 3.3V with seven fixed reset threshold  
CC  
tor voltage levels. Desired threshold levels are set by the part  
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.  
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.  
Devices are available in both leaded and lead-free packaging.  
Specify lead-free by replacing “-T” with “+T” when ordering.  
Applications  
Pin Configurations  
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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