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| 型号： | MAX6846KAVD7+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/12页 |
| 文件大小： | 0K |
| 描述： | IC BATTERY MON ADJ SOT23-8 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 功能： | 电池监控器 |
| 电池化学： | 碱性，锂离子，镍镉，镍金属氢化物 |
| 电源电压： | 1 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-8 |
| 供应商设备封装： | SOT-23-8 |
| 包装： | 带卷 (TR) |
19-2947; Rev 1; 11/05
Low-Power, Adjustable Battery Monitors with
Hysteresis and Integrated μP Reset
General Description
The MAX6846–MAX6849 are a family of ultra-low-power
battery monitors with integrated microprocessor (μP)
supervisors. The user-adjustable battery monitors are
offered with single 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 system operation), and when the battery is dead
(to disable system operation). These devices also have
an independent μP supervisor that monitors V CC and
provides an active-low reset output. A manual reset
function is available to reset the μP with a pushbutton.
The MAX6846–MAX6849 are ideal for single-cell lithium-
ion (Li+) or multicell alkaline/NiCd/NiMH applications.
When the battery voltage drops below each adjusted low
threshold, the low-battery outputs are asserted to alert
the system. When the voltage rises above the adjusted
high thresholds, the outputs are deasserted after a
150ms minimum timeout period, ensuring the voltages
have stabilized before power circuitry is activated or pro-
viding microprocessor reset timing.
These devices have user-adjustable battery threshold
Features
? User-Adjustable Thresholds for Monitoring
Single-Cell Li+ or Multicell Alkaline/NiCd/NiMH
Applications
? Single and Dual Low-Battery Output Options
? Independent μP Reset with Manual Reset
? Factory-Set Reset Thresholds for Monitoring 1.8V
to 3.3V Systems
? Available with 150ms (min) or 1.2s (min) V CC
Reset Timeout Period Options
? 150ms (min) LBO Timeout Period
? Immune to Short-Battery Voltage Transients
? Low Current (2.5μA, typ at 3.6V)
? -40°C to +85°C Operating Temperature Range
? Small 8-Pin SOT23 Packages
Ordering Information
voltages, providing a wide hysteresis range to prevent
chattering that can result due to battery recovery after
load removal. Single low-battery outputs are supplied
by the MAX6846/MAX6847 and dual low-battery out-
puts are supplied by the MAX6848/MAX6849. All bat-
tery monitors have open-drain low-battery outputs.
PART
MAX6846 KA_D_-T
MAX6847 KA_D_-T
MAX6848 KA_D_-T
MAX6849 KA_D_-T
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
8 SOT23-8
8 SOT23-8
8 SOT23-8
8 SOT23-8
The MAX6846 –MAX6849 monitor system voltages
(V CC ) from 1.8V to 3.3V with seven fixed reset threshold
options. Each device is offered with two minimum reset
timeout periods of 150ms or 1200ms. The MAX6846/
MAX6848 are offered with an open-drain RESET output
and the MAX6847/MAX6849 are offered with a push-
pull RESET output.
The MAX6846–MAX6849 are offered in a SOT23 pack-
age and are fully specified over a -40°C to +85°C temp-
erature range.
Applications
Battery-Powered Systems (Single-Cell Li+ or
Multicell NiMH, NiCd, Alkaline)
Cell Phones/Cordless Phones
Note: The first “_” is the V CC reset threshold level, suffix found
in Table 1. The “_” after the D is a placeholder for the reset
timeout period suffix found in Table 2. All devices are available
in tape-and-reel only. There is a 2500 piece minimum order
increment for standard versions (see Standard Versions table).
Sample stock is typically held on standard versions only. Non-
standard versions require a minimum order increment of
10,000 pieces. Contact factory for availability.
Devices are available in both leaded and lead-free packaging.
Specify lead-free by replacing “-T” with “+T” when ordering.
Pin Configurations
TOP VIEW
Portable Medical Devices
Digital Cameras
V DD
GND
1
2
8
7
V CC
HTHIN
V DD
GND
1
2
8
7
V CC
HTHIN
Pagers
LTHIN
3
MAX6846
MAX6847
6
MR
LTHIN
3
MAX6848
MAX6849
6
LBOH
PDAs
LBO 4
5
RESET
LBOL 4
5
RESET
MP3 Players
Electronic Toys
SOT23
SOT23
________________________________________________________________ Maxim Integrated Products
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.
1
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相关代理商/技术参数 |
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|---|---|
| MAX6846KAWD3 | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube 制造商:Rochester Electronics LLC 功能描述: |
| MAX6846KAWD3+ | 制造商:Maxim Integrated Products 功能描述:VOLT SUPERVISOR MONITOR 0.615V 8PIN SOT-23 - Rail/Tube |
| MAX6846KAWD3+T | 功能描述:电池管理 Single Adjustable Battery Monitor RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX6846KAWD3-T | 功能描述:电池管理 RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX6846KAWD7+T | 功能描述:电池管理 Single Adjustable Battery Monitor RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
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