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參數資料
| 型號： | MAX6849KAZD3-T |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | Low-Power, Adjustable Battery Monitors with Hysteresis and Integrated µP Reset |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封裝： | MO-178, SOT-23, 8 PIN |
| 文件頁數： | 1/12頁 |
| 文件大小： | 257K |
| 代理商： | MAX6849KAZD3-T |
General Description
The MAX6846–MAX6849 are a family of ultra-low-power
battery monitors with integrated microprocessor (P)
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 P supervisor that monitors VCC and
provides an active-low reset output. A manual reset
function is available to reset the P 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
(VCC) 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
User-Adjustable Thresholds for Monitoring
Single-Cell Li+ or Multicell Alkaline/NiCd/NiMH
Applications
Single and Dual Low-Battery Output Options
Independent P Reset with Manual Reset
Factory-Set Reset Thresholds for Monitoring 1.8V
to 3.3V Systems
Available with 150ms (min) or 1.2s (min) VCC
Reset Timeout Period Options
150ms (min) LBO Timeout Period
Immune to Short-Battery Voltage Transients
Low Current (2.5A, typ at 3.6V)
-40°C to +85°C Operating Temperature Range
Small 8-Pin SOT23 Packages
MAX6846–MAX6849
Low-Power, Adjustable Battery Monitors with
Hysteresis and Integrated P Reset
________________________________________________________________ Maxim Integrated Products
1
TOP VIEW
MR
RESET
LBO
1
2
8
7
VCC
HTHIN
GND
LTHIN
VDD
SOT23
3
4
6
5
MAX6846
MAX6847
1
2
8
7
VCC
HTHIN
GND
LTHIN
VDD
SOT23
3
4
6
5
MAX6848
MAX6849
LBOL
LBOH
RESET
Pin Configurations
Ordering Information
19-2947; Rev 1; 11/05
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.
PART
TEMP RANGE
PIN-PACKAGE
MAX6846KA_D_-T
-40°C to +85°C
8 SOT23-8
MAX6847KA_D_-T
-40°C to +85°C
8 SOT23-8
MAX6848KA_D_-T
-40°C to +85°C
8 SOT23-8
MAX6849KA_D_-T
-40°C to +85°C
8 SOT23-8
Note: The first “_” is the VCC 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.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX6849KAZD7+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 |
| MAX6849KAZD7-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 |
| MAX684EUA | 功能描述:電荷泵 RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
| MAX684EUA+ | 功能描述:電荷泵 3.3Vin to Reg 5Vout Charge Pump RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
| MAX684EUA+T | 功能描述:電荷泵 3.3Vin to Reg 5Vout Charge Pump RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
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