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MAX6785TCC+ Datasheet(PDF) 8 Page - Maxim Integrated Products

Part # MAX6785TCC+
Description  Low-Power, 1% Accurate, Dual-/Triple-/Quad-Level Battery Monitors in Small TDFN and TQFN Packages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX6785TCC+ Datasheet(HTML) 8 Page - Maxim Integrated Products

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Low-Power, 1% Accurate, Dual-/Triple-/Quad-Level
Battery Monitors in Small TDFN and TQFN Packages
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Pin Description (continued)
PIN
NAME
FUNCTION
1
LBL1
Falling Trip Level Input 1. Connect to an external resistive divider to set the falling trip level.
2
LBH1
Rising Trip Level Input 1. Connect to an external resistive divider to set the rising trip level.
3
LBL2
Falling Trip Level Input 2. Connect to an external resistive divider to set the falling trip level.
4
LBH2
Rising Trip Level Input 2. Connect to an external resistive divider to set the rising trip level.
5
GND
Ground
6
LBO2
Active-Low, Low-Battery Output 2. LBO2 asserts when VLBL2 falls below the falling threshold voltage. LBO2
deasserts when VLBH2 exceeds the rising threshold voltage.
7
LBO1
Active-Low, Low-Battery Output 1. LBO1 asserts when VLBL1 falls below the falling threshold voltage. LBO1
deasserts when VLBH1 exceeds the rising threshold voltage.
8
BATT
Battery Input. Power supply to the device. For better noise immunity, bypass BATT to GND with a 0.1µF
capacitor as close to the device as possible.
MAX6786/MAX6787/MAX6788
PIN
NAME
FUNCTION
1
IN1
Overvoltage Monitor Input 1
2
IN2
Overvoltage Monitor Input 2
3
IN3
Overvoltage Monitor Input 3
4
IN4
Overvoltage Monitor Input 4
5
GND
Ground
6
CLEAR
Active-Low Clear Input. OV and OV do not latch when an overvoltage fault is detected if CLEAR is held low.
CLEAR has an internal pullup resistor to BATT.
7
N.C.
No Connection. Not internally connected.
8
OV
Active-Low Overvoltage Output. When any of the inputs (VIN_) exceeds its respective rising threshold
voltage, OV asserts and stays asserted until CLEAR is pulled low or the power to the device is cycled. OV
does not latch when an overvoltage fault is detected if CLEAR is held low.
9
OV
Active-High Overvoltage Output. Inverse of OV.
10
BATT
Battery Input. Power supply to the device. For better noise immunity, bypass BATT to GND with a 0.1µF
capacitor as close to the device as possible.
MAX6789/MAX6790
Detailed Description
The MAX6782–MAX6788 are designed to monitor two
to four battery levels (1% accuracy) and assert an
active-low output indicator when the monitored voltage
level falls below the user-set threshold. Each battery
level is associated with an independent open-drain or
push-pull output. Each of these independent outputs
can be used to provide low battery warnings at differ-
ent voltage levels. Each of these monitored levels offers
fixed or adjustable hysteresis in order to prevent the
output from chattering as the battery recovers from the
lighter loads. The MAX6782–MAX6785 also feature ref-
erence outputs that can source up to 1mA.
The MAX6789/MAX6790 monitor four overvoltage con-
ditions and assert the complementary overvoltage out-
puts when any voltage at the inputs exceeds its
respective threshold. The MAX6789/MAX6790 allow
each trip threshold to be set with external resistors.
These devices also feature a latch and a clear function.
Figures 1, 2, and 3 show the simplified block diagrams
for the MAX6782–MAX6790. See the
Selector Guide.


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