MAX17061EVKIT+ Maxim Integrated Products, MAX17061EVKIT+ Datasheet - Page 7

• Manufacturer Part Number: MAX17061EVKIT+
• Description: Power Management Modules & Development Tools MAX17061 EVAL KIT MAX17061 EVAL KIT
• Manufacturer: Maxim Integrated Products

Specifications of MAX17061EVKIT+

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

The MAX17061 EV kit is configured to operate at 1MHz,
but provides the option to set the switching frequency
of the step-up DC-DC converter to 500kHz or 750kHz.
The switching frequency is set by configuring JU13 to
the shunt position, as shown in Table 6. Changing the
switching frequency could require different converter
components (refer to the MAX17061 IC data sheet for
proper component selections).
Table 5. Jumper JU11 Function
* Default position.
POSITION
SHUNT
2-3*
1-2
Switching-Frequency Selection (OSC)
MAX17061 Evaluation Kit/Evaluation System
Connected to GND
through R4 and R5
Connected to VCC
_______________________________________________________________________________________
ISET PIN
Adjustable from
15mA to 30mA
I
LED(FS)
25mA
The MAX17061 uses an internal DPWM signal to perform
dimming control. The DPWM frequency is specified by
an external resistor, connected from FSET pin to GND:
where α = 10.638, β = 5.5, γ = 58509.
The adjustable range for the FSET resistor (RFSET) is
from 41kΩ to 465kΩ, corresponding to the DPWM fre-
quency of 2000Hz to 200Hz. RFSET consists of resis-
tors R6 and R7 on the EV kit, where R6 is a 41.2kΩ
resistor and R7 is a 500kΩ potentiometer. If making
adjustments, note that the minimum usable frequency
results from a maximum resistance of 465kΩ.
Table 6. Jumper JU13 Function
* Default position.
POSITION
f
installed
DPWM
SHUNT
1-2*
Not
2-3
[
Hz
] =
Setting DPWM Frequency (f
α
Connected to GND
Connected to VCC
×
RFSET
Unconnected
OSC PIN
10
+
α β
9
× ×
1000
=
FREQUENCY
α
OPERATING
×
500kHz
750kHz
1MHz
RFSET
10
DPWM
9
+
γ
7
)