MAX1586AEVCMAXQU Maxim Integrated, MAX1586AEVCMAXQU Datasheet - Page 7

• Manufacturer Part Number: MAX1586AEVCMAXQU
• Description: Power Management IC Development Tools MAX1586A Evaluation Kit/Evaluation System
• Manufacturer: Maxim Integrated
• Series: MAX1586A, MAX1586B, MAX1586C, MAX1587A, MAX1587Cr

The MAX1586A is capable of monitoring the main bat-
tery input voltage and activating outputs when the volt-
age falls below a given threshold. The default EV kit
configuration triggers the low-battery output when the
input voltage falls below 3.6V. The dead-battery output
is triggered when the input voltage falls below 3.2V.
Monitor the outputs at the LBO and DBO pads.
To alter the EV kit defaults, cut the trace at R7 and R8
and install resistors at locations R7, R8, and R9. Use
the following equations to calculate resistor values:
where:
Note: The following conditions must be met:
LBI = 1.0V
DBI = 1.232V
V
V
R
V
V
inL
inD
inL
inD
9
= 100kΩ
= desired low-battery detection voltage
≥ LBI (1.0V)
= desired dead-battery detection voltage
≥ DBI (1.232V)
R
R
8
7
=
=
_______________________________________________________________________________________



R x
DBI
LBI
9



x
V
LBI
Low-Battery Detection
V
inL
V
inD
inL
−
1
−

 −

1



x R
R
8
9
MAX1586A Evaluation Kit/
The MAX1586A EV kit provides extra pads to support
power sequencing. The directions below describe the
implementation of this feature.
1) Cut the trace at R1–R6.
2) To create an RC time delay:
3) Ensure that shunts are installed across pins 1 and
Calculate component values using the equation below:
where:
The MAX1586A EV kit provides pads and pullup resis-
tor placeholders that allow an alternative SMBus/I
compatible interface to be used. Connect the interface
through the SCL, SDA, and GND pads. Install pullup
resistors at positions R14 and R15 if required.
To evaluate the MAX1586B, replace IC U1 with a
MAX1586BETM.
Install resistors and capacitors at locations R1–R6
and C1–C6.
2 of jumpers JU1–JU6.
C
V
V
t = desired startup time
TH
in
n
Using an Alternative SMBus Interface
Optional Power-Sequencing Circuitry
= 0.1µF
= battery input voltage
= 1.1V
Evaluation System
R
n
=
C
Evaluating the MAX1586B
n
x In



−
1
t
−
V
V
TH
in



2
C-
7