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參數(shù)資料
| 型號(hào)： | MAX6846KASD3 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Low-Power, Adjustable Battery Monitors with Hysteresis and Integrated UP Reset |
| 中文描述： | 低功耗，具有滯后和集成可調(diào)電池監(jiān)視器復(fù)位 |
| 文件頁(yè)數(shù)： | 1/12頁(yè) |
| 文件大小： | 191K |
| 代理商： | MAX6846KASD3 |
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
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.
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
Portable Medical Devices
Digital Cameras
Pagers
PDAs
MP3 Players
Electronic Toys
Features
o
User-Adjustable Thresholds for Monitoring
Single-Cell Li+ or Multicell Alkaline/NiCd/NiMH
Applications
o
Single and Dual Low-Battery Output Options
o
Independent μP Reset with Manual Reset
o
Factory-Set Reset Thresholds for Monitoring 1.8V
to 3.3V Systems
o
Available with 150ms (min) or 1.2s (min) V
CC
Reset Timeout Period Options
o
150ms (min)
LBO
Timeout Period
o
Immune to Short-Battery Voltage Transients
o
Low Current (2.5μA, typ at 3.6V)
o
-40°C to +85°C Operating Temperature Range
o
Small 8-Pin SOT23 Packages
M
Low-Power, Adjustable Battery Monitors with
Hysteresis and Integrated μP Reset
________________________________________________________________
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
TOP VIEW
MR
RESET
LBO
1
2
8
7
V
CC
HTHIN
GND
LTHIN
V
DD
SOT23
3
4
6
5
MAX6846
MAX6847
1
2
8
7
V
CC
HTHIN
GND
LTHIN
V
DD
SOT23
3
4
6
5
MAX6848
MAX6849
LBOL
LBOH
RESET
Pin Configurations
Ordering Information
19-2947; Rev 0; 7/03
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
8 SOT23-8
8 SOT23-8
8 SOT23-8
8 SOT23-8
MAX6846
KA_D_-T
MAX6847
KA_D_-T
MAX6848
KA_D_-T
MAX6849
KA_D_-T
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.
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| MAX6847 | Low-Power, Adjustable Battery Monitors with Hysteresis and Integrated UP Reset |
| MAX6847KARD3 | Low-Power, Adjustable Battery Monitors with Hysteresis and Integrated UP Reset |
| MAX6847KASD3 | Low-Power, Adjustable Battery Monitors with Hysteresis and Integrated UP Reset |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX6846KASD3+ | 制造商:Maxim Integrated Products 功能描述:VOLT SUPERVISOR MONITOR 0.615V 8PIN SOT-23 - Rail/Tube |
| MAX6846KASD3+T | 功能描述:電池管理 Single Adjustable Battery Monitor RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| MAX6846KASD3-T | 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| MAX6846KASD7+T | 功能描述:電池管理 Single Adjustable Battery Monitor RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| MAX6846KASD7-T | 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
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