MAX8758EVKIT Maxim Integrated Products, MAX8758EVKIT Datasheet - Page 4

• Manufacturer Part Number: MAX8758EVKIT
• Description: Display Modules & Development Tools MAX8758 KIT MAX8758 KIT
• Manufacturer: Maxim Integrated Products

Specifications of MAX8758EVKIT

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

discharge resistor through JU5). Table 2 lists the selec-
table JU2 and JU4 jumper options. To use an external
TTL source to control the high-voltage switch, leave
JU2 open and connect the source to the CTL terminal.
Refer to the High-Voltage Switch Control section in the
MAX8758 data sheet for details.
The MAX8758 EV kit incorporates JU3 to control the
SHDN pin. Table 3 lists the JU3 functions.
The MAX8758 EV kit provides options to discharge
DRN through R10 either to VMAIN or to GND by using
jumper JU5. Table 4 lists the JU5 functions.
MAX8758 Evaluation Kit
Table 3. Jumper JU3 Functions
Table 4. Jumper JU5 Functions
4
Not installed
Pins 1 and 2
Pins 2 and 3
LOCATION
LOCATION
(default)
(default)
Installed
SHUNT
SHUNT
_______________________________________________________________________________________
Connected to VMAIN
Connected to GND
Connected to GND
Connected to VIN
through R10
through R10
Shutdown Selection ( SHDN )
through R8
SHDN PIN
DRN PIN
Connecting DRN
through R10 to GND
GON is discharged
GON is discharged
VMAIN when GON
connects to DRN
connects to DRN
EV KIT OUTPUT
GON OUTPUT
through R10 to
when GON
Disabled
Enabled
The MAX8758 EV kit’s step-up switching-regulator out-
put (VMAIN) is set to +8.5V by feedback resistors R1
and R2. To generate output voltages other than +8.5V
(up to +13V), select different external voltage-divider
resistors, R1 and R2. Refer to the Output Voltage
Selection section in the MAX8758 data sheet for
instructions on selecting resistors R1 and R2.
Note that changing the VMAIN voltage setting changes
the VP and VN charge-pump output voltages. Also, out-
put capacitors C3 to C5 are rated for +10V. To set the
output voltage greater than +10V, use higher-voltage-
rated capacitors and take care not to allow SRC (connect-
ed to VP) to exceed its 30V absolute maximum rating.
The MAX8758 EV kit’s operational amplifier is config-
ured as a unity-gain buffer by the PC board trace short-
ing NEGB and OUTB pins. The voltage at the noninvert-
ing input, POSB, is set to half of VMAIN by voltage-
divider resistors (R3, R4). To set VCOM to other volt-
ages (up to VMAIN), select different divider resistors.
Step-Up Switching Regulator Output
Output-Voltage Selection
Operational-Amplifier Output
Voltage (VMAIN)
Voltage (V
COM
)