MAX1830EVKIT Maxim Integrated, MAX1830EVKIT Datasheet - Page 2

• Manufacturer Part Number: MAX1830EVKIT
• Description: Power Management IC Development Tools
• Manufacturer: Maxim Integrated
• Series: MAX1830, MAX1831r

Specifications of MAX1830EVKIT

• Input Voltage: 3 V to 5.5 V
• Output Voltage: 1.5 V to 2.5 V
• Output Current: 3.4 A

MAX1830 Evaluation Kit
The MAX1830 EV kit can be configured to produce a
preset output voltage of 1.5V, 1.8V, 2.5V, or is feedback
adjustable from 1.1V to V
preset for 1.8V. It operates from an input voltage range
of 3V to 5.5V and delivers up to 3A of output current.
Jumper JU1 controls the MAX1830’s shutdown func-
tion. Table 1 lists the jumper options.
The output voltage can be modified from the preset
1.8V output voltage two different ways. The first way is
to change the output voltage to one of the other preset
output voltages (1.5V or 2.5V). This is done by changing
the jumper JU2 setting (Table 2). The second way is to
add feedback resistors (R4 and R5) and connect
FBSEL to GND, which allows an adjustable output volt-
age of 1.1V to V
Note: Adjustable operation may require replacement of
C5 with output capacitor rated for higher voltage.
The resistors can be calculated according to the follow-
ing equation:
Select R5 between 10kΩ and 25kΩ.
The inductor provided in the MAX1830 EV kit is opti-
mized for a 3V to 5.5V input voltage range and a
1.8V/3A output voltage. If the output needs to be
changed to another output voltage, refer to the
MAX1830 data sheet for the recommended inductor
value for your application.
2
_______________________________________________________________________________________
R4 = (V
IN
.
OUT
Detailed Description
Output Voltage Selection
x R5 / 1.1V ) - R5
IN
. As configured, the kit is
Jumper Selection
Table 1. Jumper JU1 Function
Table 2. Output Voltage Configuration
*Default setting.
1.8* (MAX1830)
3.3* (MAX1831)
VOLTAGE (V)
LOCATION
Adjustable
(Default)
OUTPUT
SHUNT
Closed
Open
1.5
2.5
Logic low: 1MΩ
pulldown resistor
Connected to VIN
(FBSEL = OPEN)
Connect 1 and 4
Connect 1 and 2
Connect 1 and 3
(FBSEL = GND)
(FBSEL = REF)
(FBSEL = V
Not installed
SHDN PIN
JU2
CC
)
Output voltage
disabled
Output voltage
enabled
MAX1830 OUTPUT
Installed (preset
output voltage)
Installed (preset
output voltage)
Installed (preset
output voltage)
Not installed (JU3 PC
board trace must be
cut) (output voltage
set by R4 and R5)
JU3