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参数资料
| 型号： | MAX6785TCA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 14/17页 |
| 文件大小： | 0K |
| 描述： | IC BATT MON TRPL .5% 12TQFN |
| 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： | 1.2 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 12-TQFN 裸露焊盘 |
| 供应商设备封装： | 12-TQFN-EP（4x4） |
| 包装： | 带卷 (TR) |
Low-Power, 1% Accurate, Dual-/Triple-/Quad-Level
Battery Monitors in Small TDFN and TQFN Packages
Monitoring a Battery Voltage Higher
than the Allowable V BATT
For monitoring higher voltages, supply a voltage to BATT,
which 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.
Maintaining Reference Accuracy
Since the ground connection of the MAX6782–MAX6790
has a small series resistance, any current flowing into an
output flows to ground and causes a small voltage to
develop from the internal ground to GND. This has the
effect of slightly increasing the reference voltage. To mini-
mize the effect on the reference voltage, keep the total
output sink current below 3mA.
Adding External Capacitance to Reduce
Noise and Transients
If monitoring voltages in a noisy environment, add a
bypass capacitor of 0.1μF from BATT to GND as close
as possible to the device. For systems with large tran-
sients, additional capacitance may be required.
Reverse-Battery Protection
To prevent damage to the device during a reverse-battery
condition, connect the MAX6782–MAX6785 in the configu-
ration shown in Figure 6a or 6b. For the internal reverse-
battery protection to function correctly on the MAX6782–
MAX6790, several conditions must be satisfied:
? The connections to IN_/LBL_/LBH_ must be made to
the center node of a resistive divider going from
BATT to GND. The Thevenin equivalent impedance
of the resistive divider must not fall below 1k ? in
order to limit the current.
R 1
IN_
BATT
LBO_
? HADJ_ (MAX6782 –MAX6785 only) must either be
connected to GND or to the center node of a resis-
tive divider going from REF to GND.
R 2
REF
HADJ_
MAX6782
MAX6783
MAX6784
MAX6785
? The outputs may only be connected to devices pow-
ered by the same battery as the MAX6782 –
MAX6790.
Note that the MAX6782–MAX6790 will not protect other
devices in the circuit.
Additional Application Circuit
GND
Figure 7 shows the MAX6786/MAX6787/MAX6788 in a
typical two-battery-level monitoring circuit.
A) FACTORY PRESET HYSTERESIS CONNECTION
BATT
LBL1
1
R 1
IN_
BATT
LBO_
LBH1
MAX6786
LBO1
R 2
R 3
REF
MAX6782
MAX6783
MAX6784
LBL2
MAX6787
MAX6788
MAX6785
HADJ_
LBO2
R 4
GND
LBH2
GND
B) EXTERNAL HYSTERESIS ADJUST CONNECTION
Figure 6. Internal Preset or Externally Adjusted Hysteresis
Connection
Figure 7. Two-Battery-Level Monitor Configuration
14
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6785TCB+ | 功能描述:电池管理 Triple 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 |
| MAX6785TCB+T | 功能描述:电池管理 Triple 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 |
| MAX6785TCC+ | 功能描述:电池管理 Triple 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 |
| MAX6785TCC+T | 功能描述:电池管理 Triple 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 |
| MAX6786TA+ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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