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參數(shù)資料
| 型號： | MAX6784 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Low-Power, 1% Accurate, Dual-/Triple-/Quad-Level Battery Monitors in Small TDFN and TQFN Packages |
| 中文描述： | 低功耗、1%精度、雙/三/四電平電池監(jiān)測器，采用微型TDFN和TQFN封裝 |
| 文件頁數(shù)： | 12/20頁 |
| 文件大?。?/td> | 665K |
| 代理商： | MAX6784 |
M
Low-Power, 1% Accurate, Dual-/Triple-/Quad-Level
Battery Monitors in Small TDFN and TQFN Packages
12
______________________________________________________________________________________
MAX6782–MAX6785 Hysteresis
Factory-Set Hysteresis
The MAX6782–MAX6785 have factory-set hysteresis for
ease of use and reduced external parts count. For
these devices the absolute hysteresis voltage is a per-
centage of the internally generated reference. The
amount depends on the device option. “A” devices
have 0.5% hysteresis, “B” devices have 5% hysteresis,
and “C” devices have 10% hysteresis. Table 2 presents
the threshold voltages for devices with factory-set hys-
teresis. For factory-set hysteresis, connect HADJ_ to
GND.
Externally Adjusted Hysteresis
The MAX6782–MAX6785 can also be configured for
externally adjustable hysteresis. Connect a resistive
divider from REF to HADJ_ and to GND (Figure 6) to set
the hysteresis voltage. The hysteresis adjustment range
is from 0.4V to V
REF
, and the voltage at HADJ_
(V
HADJ_
) must be set higher than Hysteresis
Adjustment Logic High (V
HALH
) (Figure 4b). Note that if
V
HADJ_
is lower than Hysteresis Adjustment Logic Low
(V
HALL
), these devices switch back to the internal fac-
tory-set hysteresis (Figure 4a).
MAX6786/MAX6787/MAX6788 Adjustable
Hysteresis
The MAX6786/MAX6787/MAX6788 offer external hystere-
sis control through the resistive divider that monitors bat-
tery voltage. Figure 2 shows the connections for external
hysteresis. See Calculating an External Hysteresis
Resistive Divider (MAX6786/MAX6787/MAX6788) section
for more information.
t
PD
V
TH+
V
TH-
IN_
CLEAR
OV
OV
t
CLD
Figure 5. MAX6789/MAX6790 Timing
DEVICE
OPTION
PERCENT
HYSTERESIS
(%)
FALLING
THRESHOLD
(V
INF
) (V)
RISING
THRESHOLD
(V
INR
) (V)
A
B
C
0.5
5
10
0.6055
0.5781
0.5477
0.6085
0.6085
0.6085
Table 2. Typical Falling and Rising
Thresholds for MAX6782–MAX6785
(HADJ_ = GND)
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| MAX6785TC | Low-Power, 1% Accurate, Dual-/Triple-/Quad-Level Battery Monitors in Small TDFN and TQFN Packages |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX6784TCA | 制造商:Maxim Integrated Products 功能描述: |
| MAX6784TCA+ | 功能描述:電池管理 Triple 1%-Accurate 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 |
| MAX6784TCA+T | 功能描述:電池管理 Triple 1%-Accurate 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 |
| MAX6784TCB+ | 功能描述:電池管理 Triple 1%-Accurate 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 |
| MAX6784TCB+T | 功能描述:電池管理 Triple 1%-Accurate 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 |
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