PRODUCT DATASHEET
AAT3177
TM
ChargePump
High Current, High Efficiency Charge Pump with Auto-Timer
Evaluation Board User Interface
The user interface for the AAT3177 evaluation board is
provided by 3 buttons and a couple of connection termi-
nals. The board is operated by supplying external power
and pressing individual buttons or button combinations.
The table below indicates the function of each button or
button combination.
To power-on the evaluation board, connect a power supply
or battery to the DC- and DC+ terminals. Make the board’s
supply connection by positioning the J1 jumper to the ON
position. A red LED indicates that power is applied.
The evaluation board is made flexible so that the user
can disconnect the enable line from the microcontroller
and apply an external enable signal. By removing the
jumper from J2, an external enable signal can be applied
to the board. Apply the external enable signal to the ON
pin of the J2 terminal.
When applying an external enable signal, consideration
must be given to the voltage level. The externally
applied voltage cannot exceed the supply voltage that is
applied to the VIN pins of the device (i.e., DC+).
Figure 4: Example PCB Layout.
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