MAX1773EVKIT 查看數據表（PDF） - Maxim Integrated
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MAX1773EVKIT Datasheet PDF : 10 Pages
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MAX1773 Evaluation Kit
Table 2. Jumper JU2 Functions
SHUNT
LOCATION
1 and 2
2 and 3
INVERTER (U5B)
INPUT PIN
AC_PRESENT
signal feeds
inverter
AC_PRESENT
signal bypassed
LED
OPERATING
MODE
AC_PRESENT
LED state driven
by MAX1773
AC_PRESENT
LED state forced
off
Table 3. Jumper JU3 Functions
SHUNT
LOCATION
INVERTER
(U5E) INPUT
PIN
LED OPERATING
MODE
1 and 2
BATT_STAT
signal feeds
inverter
BATT_STAT LED
state driven by
MAX1773 and
inverters
2 and 3
BATT_STAT
signal bypassed
BATT_STAT LED
state forced off
SMBus Pullup Resistors
The MAX1773 EV kit features pullup resistors for the
SMBUS CLK and DAT signals. The CLK and DAT
pullup resistors (R16, R17) can be disabled by the 2-
pin jumpers JU4 and JU5, respectively. Tables 4 and 5
list the selectable jumper options.
CMOS Analog Switches, Shutdown Mode
The MAX1773 EV kit features a shutdown mode for the
CMOS analog switches (MAX4066) to reduce the
MAX1773 EV kit’s overall current. The 2-pin jumpers,
JU6 and JU7, select the shutdown mode for the CMOS
analog switches. Tables 6 and 7 list the selectable
jumper options.
Table 4. Jumper JU4 Functions
SHUNT
LOCATION
1 and 2
None
R16 RESISTOR
CLK SIGNAL
R16 connected to
+3.3V
R16 is floating
CLK signal pulled
up to +3.3V by
R16
Multiplexer
controls CLK
Table 5. Jumper JU5 Functions
SHUNT
LOCATION
1 and 2
None
R17 RESISTOR
DAT SIGNAL
R17 connected
to +3.3V
R17 is floating
DAT signal pulled
up to +3.3V by R17
Multiplexer controls
CLK
Table 6. Jumper JU6 Functions
SHORT
LOCATION
1 and 2
(PC trace
shorted)
None
(PC trace short
cut open)
SWITCH (U3)
V+ PIN
Connected to
+3.3V
None
CMOS ANALOG
SWITCHES
SMBus CMOS
analog switches
(U3) powered up
SMBus CMOS
analog switches
(U3) powered down
Table 7. Jumper JU7 Functions
SHORT
LOCATION
1 and 2
(PC trace
shorted)
None
(PC trace short
cut open)
SWITCH (U4)
V+ PIN
Connected to
+3.3V
None
CMOS ANALOG
SWITCHES
SMBus CMOS
analog switches
(U4) powered up
SMBus CMOS
analog switches
(U4) powered down
CMOS Switch Debouncer, Shutdown Mode
The MAX1773 EV kit features a shutdown mode for the
CMOS switch debouncer (MAX6816) to reduce the
MAX1773 EV kit’s overall current. Two jumpers, JU8
and JU9, select the shutdown mode for the CMOS
switch debouncer IC. Tables 8 and 9 list the selectable
jumper options.
Switch Selection Modes
Battery Selection Interface
The MAX1773 EV kit features a battery-pack selection
interface to select which battery pack is connected to
terminals TB1 (battery A) and TB2 (battery B) and may
be charged. A three-position switch (SW1) is utilized to
select which smart-battery pack will be controlled by
the MAX1773 IC.
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