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参数资料
| 型号： | MAX6781LTB+T |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | Low-Power, 1%-Accurate Battery Monitor in µDFN and SC70 Packages |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO6 |
| 封装： | 1 X 1.50 MM, ROHS COMPLIANT, UDFN-6 |
| 文件页数： | 10/11页 |
| 文件大小： | 194K |
| 代理商： | MAX6781LTB+T |
MAX6775–MAX6781
Low-Power, 1%-Accurate Battery
Monitors in DFN and SC70 Packages
8
_______________________________________________________________________________________
Selector Guide
PART
LBO OUTPUT
OUTPUT TYPE
HYSTERESIS
PIN-PACKAGE
MAX6775XK_+T
Single
Push-Pull
Fixed
5 SC70
MAX6775LT_+T
Single
Push-Pull
Fixed
6 DFN
MAX6776XK_+T
Single
Open-Drain
Fixed
5 SC70
MAX6776LT_+T
Single
Open-Drain
Fixed
6 DFN
MAX6777XK+T
Single
Push-Pull
Adjustable
5 SC70
MAX6777LT+T
Single
Push-Pull
Adjustable
6 DFN
MAX6778XK+T
Single
Open-Drain
Adjustable
5 SC70
MAX6778LT+T
Single
Open-Drain
Adjustable
6 DFN
MAX6779LT_+T
Dual
Push-Pull
Fixed
6 DFN
MAX6780LT_+T
Dual
Open-Drain
Fixed
6 DFN
MAX6781LT_+T
Dual
Mixed
Fixed
6 DFN
Calculating an External
Hysteresis Resistive Divider
Setting the hysteresis externally requires three external
resistors, as shown in Figure 3. Select RH using the fol-
lowing formula:
where eA is the allowable error due to input leakage
current (typically 0.005 or less), VBATT_RISING is the
desired rising threshold, and IL is the worst-case leak-
age current (5nA). Then calculate RLO (which is the
sum of RL and RHYST):
where VLBI is 1.222V and VBATT_FALLING is the desired
falling threshold. Calculate RL using:
and finally, calculate RHYST:
Monitoring a Battery Voltage Higher
Than the Allowable VBATT
For monitoring higher voltages, supply power to BATT
that is within the specified supply range, and power the
input resistive divider from the high voltage to be moni-
tored. Do not exceed the
Absolute Maximum Ratings.
Adding External Capacitance to
Reduce Noise and Transients
If monitoring voltages in a noisy environment, add a
bypass capacitor of 0.1F from BATT to GND as close
as possible to the device. For systems with large tran-
sients, additional capacitance may be required. A small
capacitor (<1nF) from LBI_ to GND may provide addi-
tional noise immunity.
RR
R
HYST
LO
L
=
R
VR
R
V
L
LBI
H
LO
BATT RISING
=
×+
()
_
R
VR
VV
LO
LBI
H
BATT FALLING
LBI
=
×
_
R
eV
I
H
A
BATT RISING
L
≤
×
_
相关PDF资料 |
PDF描述 |
|---|---|
| MAX6781LTC+T | Low-Power, 1%-Accurate Battery Monitor in µDFN and SC70 Packages |
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| MAX6782TEB+T | Low-Power, 1% Accurate, Dual-/Triple-/Quad-Level Battery Monitors in Small TDFN and TQFN Packages |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6781LTC+ | 制造商:Maxim Integrated Products 功能描述:VOLT SUPERVISOR MONITOR 1.222V 6PIN UDFN - Rail/Tube 制造商:Rochester Electronics LLC 功能描述: |
| MAX6781LTC+T | 功能描述:电池管理 Dual 1%-Accurate 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 |
| MAX6782TEA+ | 功能描述:电池管理 Quad 1%-Accurate 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 |
| MAX6782TEA+T | 功能描述:电池管理 Quad 1%-Accurate 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 |
| MAX6782TEB+ | 功能描述:电池管理 Quad 1%-Accurate 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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