MAX17117EVKIT+ Maxim Integrated Products, MAX17117EVKIT+ Datasheet - Page 4

• Manufacturer Part Number: MAX17117EVKIT+
• Description: Power Management Modules & Development Tools MAX17117 EVAL KIT MAX17117 EVAL KIT
• Manufacturer: Maxim Integrated Products

Specifications of MAX17117EVKIT+

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

MAX17117 Evaluation Kit
The EV kit incorporates jumper JU1 to control the chip-
enable control. See Table 1 for jumper JU1 functions.
The EV kit’s step-up switching-regulator output (VMAIN)
is set to +8.5V by feedback resistors R1 and R2. To
generate output voltages other than +8.5V (up to +15V),
select different external voltage-divider resistors R1 and
R2. For instructions on selecting the step-up switching
regulator feedback divider resistors for other output volt-
ages, refer to the Output-Voltage Selection section in the
MAX17117 IC data sheet.
Note that changing the VMAIN voltage setting changes
the GHON and VGL charge-pump output voltages.
The voltage range of VGL is limited to -15V. The volt-
4
______________________________________________________________________________________
Step-Up Switching-Regulator Output Voltage
Output-Voltage Selection
Jumper Selection (JU1)
(VMAIN)
age range of GHON is limited to +35V. The voltage
difference between GHON and VGL should not exceed
+40V. If VMAIN is set for more than +11V, disconnect
the GHON and VGL pins from the charge-pump outputs.
If operation of the high-voltage scan driver is desired for
VMAIN greater than +11V, power GHON and VGL from
an external supply.
The EV kit’s op amp is configured internally as a unity-
gain buffer. The voltage at the noninverting input (POS)
is set to half of VMAIN by voltage-divider resistors R4
and R5. To set VOUT to other voltages (up to VMAIN),
select different divider resistors according to the follow-
ing equation:
R4 R5
=
Op-Amp Output Voltage (VOUT)
×



VMAIN
VOUT
−
1


