MAX1845EVKIT Maxim Integrated, MAX1845EVKIT Datasheet - Page 2

• Manufacturer Part Number: MAX1845EVKIT
• Description: Power Management IC Development Tools Evaluation Kit for the MAX1845
• Manufacturer: Maxim Integrated
• Series: MAX1845r

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1) Ensure that the circuit is connected correctly to the
2) Verify that the shunts are across JU1 pins 1 and 2,
3) Turn on V
4) Verify that the output voltages are 1.8V (V
The EV kit outputs are preset to +1.8V and +2.5V.
However, the output voltages can also be adjusted
between 1.0V and 5.5V by selecting R1/R2 and R3/R4
values. Select feedback resistors R2 (or R4) in the 5kΩ
to 50kΩ range. R1 (or R3) is then given by:
where V
MAX1845 Evaluation Kit
Note: Please indicate that you are using the MAX1845 when
contacting these component suppliers.
2
Central Semiconductor
Dale-Vishay
Fairchild
International Rectifier
Kemet
Nihon
Panasonic
Sumida
Taiyo Yuden
TDK
Toshiba
7V to 22V, power supply, battery, or notebook AC
adapter
DC bias power supply, 5V at 100mA
Dummy loads capable of sinking 4A and 7A
Digital multimeters (DMMs)
100MHz dual-trace oscilloscope
supplies and dummy load prior to applying any
power.
JU2 pins 1 and 2, and JU3 pins 1 and 2.
the output UVLO timer will time out and the FAULT
latch will be set, disabling the regulator outputs until
+5V power is cycled or ON1/ON2 is toggled.
2.5V (V
_______________________________________________________________________________________
R1 (or R3) = R2 (or R4) x [(V
SUPPLIER
FB
OUT2
= 1.0V.
Evaluating Other Output Voltages
IN
Recommended Equipment
supply prior to +5V bias power; otherwise,
).
Component Suppliers
516-435-1110
402-564-3131
408-721-2181
310-322-3331
408-986-0424
847-843-7500
714-373-7939
708-956-0666
408-573-4150
847-390-4373
949-455-2000
PHONE
OUT
Quick Start
/ V
516-435-1824
402-563-6418
408-721-1635
310-322-3332
408-986-1442
847-843-2798
714-373-7183
708-956-0702
408-573-4159
847-390-4428
949-859-3963
FB
) - 1]
OUT1
FAX
) and
Table 1. Jumper JU1 Functions
(Output Voltage V
Table 2. Jumper JU2 Functions
(Output Voltage V
Table 3. Jumper JU3 Functions
(SKIP Mode Selection)
Table 4. Jumper JU4 Functions
(Output Voltage Selection)
Not installed
1 and 2
2 and 3
1 and 2
2 and 3
1 and 2
2 and 3
1 and 2
2 and 3
JU1
JU2
JU4
JU3
Connected to
VCC
Connected to
GND
Connected to
VCC
Connected to
GND
Connected to
VCC
Connected to
GND
Connected to
VCC
Connected to
GND (PC board
trace)
Connected to
resistor-divider
R3/R4
SKIP PIN
ON1 PIN
ON2 PIN
FB1 PIN
OUT1
OUT2
Control)
Control)
Low-noise mode,
forced fixed-
frequency PWM
operation.
Normal operation,
allows automatic
PWM/PFM switchover
for pulse skipping at
light load, resulting in
highest efficiency.
V
enabled
V
V
enabled
V
V
V
Adjustable mode
OUTPUT VOLTAGE
OUTPUT VOLTAGE
OUTPUT VOLTAGE
OPERATING MODE
OUT1
OUT1
OUT2
OUT2
OUT1
OUT1
= 1.8V,
= 0V, disabled
= 2.5V,
= 0V, disabled
= 1.5V
= 1.8V