MAX1960EVKIT Maxim Integrated, MAX1960EVKIT Datasheet - Page 4

• Manufacturer Part Number: MAX1960EVKIT
• Description: Power Management IC Development Tools Evaluation Kit for the MAX1960 MAX1961 MAX1962
• Manufacturer: Maxim Integrated
• Series: MAX1960, MAX1961, MAX1962r

Specifications of MAX1960EVKIT

• Output Voltage: 0.8 V to 4.95 V
• Output Current: 20000 mA

MAX1960 Evaluation Kit
The MAX1960 uses a pair of feedback resistors to set
the output voltage, which is fixed at +1.8V from the fac-
tory. The output voltage of the MAX1962 can also be
set with feedback resistors, or can use its preset output
voltages like the MAX1961 (see the Selecting a Preset
Output Voltage section).
To change the output voltage on the MAX1960 circuit,
first verify that a 10kΩ resistor is installed in R4. Then
calculate a resistor value for R3:
To set the output voltage on the MAX1962 circuit, first
remove jumper JU8. Then, install a 10kΩ resistor in R6.
Finally, calculate a resistor value for R7:
When changing the output-voltage setting, refer to the
MAX1960/MAX1961/MAX1962 data sheet for selecting
compensation components, output inductor, and output
capacitor for best performance.
First, follow the procedure given under the Evaluating
the MAX1961 or MAX1962 section to set up the EV kit
for using the MAX1961 or MAX1962. To select a preset
output voltage with the MAX1962, short the pins of
jumper JU8, remove resistors R6 and R7, and use JU5
to select the output voltage (Table 3). For the MAX1961,
use JU4 to select the output voltage (Table 3).
Table 9. Component Changes for 500kHz Operation
4
(MAX1960/MAX1961)
_______________________________________________________________________________________
DESIGNATION
C2, C3, C13
C1
C6
L1
Selecting a Preset Output Voltage
R
R
7
3
=
=
Setting the Output Voltage
R
R
QTY
4
6
1
3
1
1
×
×






V
V
(MAX1960/MAX1962)
(MAX1961/MAX1962)
OUT
OUT
0 8
1µF ±10%, 16V X5R ceramic capacitor (0603), Panasonic ECJ1VB1C105K
1µF ±10%, 16V X5R ceramic capacitors (0603), Panasonic ECJ1VB1C105K
4.7µF ±10%, 6.3V X5R ceramic capacitor (0603), Panasonic ECJ1VB0J475K
0.45µH inductor, Sumida CDEP105(S)-0R4MC-50
0 8
.
.
−
−
1
1






DESCRIPTION
When selecting different output voltages, refer to the
MAX1960/MAX1961/MAX1962 data sheet for selecting
compensation components, output inductor, and output
capacitor for best performance.
In the default configuration, the EV kit works at input
voltages from +2.7V to +5.5V. To work with input volt-
ages below +2.7V, configure the charge pump as a
tripler. When using the tripler, the input voltage range is
+2.35V to +3.6V.
To configure the charge pump as a tripler, use the
following procedure:
For the MAX1960/MAX1961 circuit:
1) Remove C1.
2) Add C2, C3, and C13 (see the Component List).
3) Add D2–D5 (see the Component List).
4) Short the pads of JU9.
For the MAX1962 circuit:
1) Remove C34.
2) Add C22, C32, and C33 (see the Component List).
3) Add D7–D10 (see the Component List).
4) Short the pads of JU11.
JU3 and JU6 select between 500kHz and 1MHz opera-
tion. To optimize performance, it is also necessary to
change the value of some of the components. The
components for 1MHz operation come installed on the
PC board (MAX1960/MAX1961 circuit), and are listed in
the Component List table. For 500kHz operation,
change the components listed in Table 9, and refer to
the MAX1960/MAX1961/MAX1962 data sheet for select-
ing compensation components. The MAX1962 circuit
component list is configured for 500kHz operation.
Changing the Switching Frequency
Evaluating at Low Input Voltages
(Tripler Configuration)
Without tripler
With tripler
NOTES
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