Datasheet

Maxim Integrated
2
www.maximintegrated.com
Evaluates: MAX15062C in
12V Output-Voltage Application
MAX15062C 12V Evaluation Kit
Table 1. Enable Control (EN/UVLO) (JU1, JU2)
Table 2. MODE Control
Detailed Description
The MAX15062C 12V evaluation kit (EV kit) is a fully
assembled and tested circuit board that demonstrates the
performance of the MAX15062C 60V, 300mA ultra-small,
high-efficiency, synchronous step-down converter. The
EV kit operates over a wide input voltage range of 14V
to 60V, and provides up to 300mA load current at 12V
output voltage. The device features undervoltage lockout,
overcurrent protection, and thermal shutdown. The EV kit
switches at a frequency of 500kHz, and delivers a peak
efficiency of 95% with the supplied components.
The EV kit includes an EN/UVLO PCB pad and jumpers
JU1, JU2 to enable control of the converter output. The
MODE PCB pad and jumper JU3 are provided for select-
ing the mode of operation of the converter. The VCC
PCB pad helps measure the internal LDO voltage. An
additional RESET PCB pad is available for monitoring the
open-drain logic output.
The EV kit output voltage can be configured to 15V by
installing the resistor R6 and the inductor L1 (alternate)
which comes along with the EV kit.
Enable Control (JU1, JU2)
The EN/UVLO pin on the device serves as an on/off
control while also allowing the user to program the input
undervoltage-lockout (UVLO) threshold. Jumpers JU1
and JU2 configure the EV kit’s output for turn-on/turn-off
control. Install a shunt across jumper JU2 pins 1-2 to
disable VOUT. See Table 1 for proper JU1, JU2 jumper
configurations.
Additionally, resistors R1 and R2 are included to set the
UVLO to a desired turn-on voltage. Refer to the Enable
Input (EN/UVLO), Soft-Start section in the MAX15062 IC
data sheet for additional information on setting the UVLO
threshold voltage.
Active-Low, Open-Drain Reset Output
(RESET)
The EV kit provides a PCB pad to monitor the status of
the RESET output. RESET goes high when VOUT rises
above 95% (typ) of its nominal regulated output voltage.
RESET goes low when VOUT falls below 92% (typ) of its
nominal regulated voltage.
PFM or Forced-PWM Mode (MODE)
The EV kit includes a jumper (JU3) to program the
mode of operation of the converter. Install a shunt across
JU3 before powering up the EV kit to enable the forced-
PWM operation. Keep JU3 open to enable the light-load
PFM operation. See Table 2 for proper JU3 jumper
configurations.
*Default position.
*Default position.
SHUNT POSITION
EN/UVLO PIN VOUT OUTPUT
JU1 JU2
1-2 Open Connected to VIN Enabled
Open 1-2 Connected to GND Disabled
1-2* 1-2 Connected to midpoint of R1, R2 resistor-divider
Enabled at VIN
13V
SHUNT POSITION MODE PIN MODE OF OPERATION
1-2 Connected to GND Forced PWM
Open* Unconnected PFM