Datasheet
Evaluates: MAX17552 (µMAX) in 5V
Output-Voltage Application
MAX17552 5V Output Evaluation
Kit (µMAX)
General Description
The MAX17552 5V evaluation kit (EV kit) (µMAX
®
) is
a fully assembled and tested circuit board that demon-
strates the performance of the MAX17552 60V, 100mA
ultra-small, high-efficiency, synchronous step-down
DC-DC converter in a 10-pin µMAX package. The EV
kit operates over a wide input voltage range of 6V to
60V and provides up to 100mA load current at 5V out-
put. It draws only 26µA supply current under no-load
conditions (EN/UVLO connected to V
IN
). The EV kit is
programmed to switch at a frequency of 220kHz and
delivers a peak efficiency of 93% with the supplied
components. The device is simple to use and easily con-
figurable with minimal external components. It features
cycle-by-cycle peak current-limit protection, undervoltage
lockout and thermal shutdown.
The EV kit comes installed with the MAX17552AUB+ in
an 10-pin (3mm x 3mm), lead(Pb)-free/RoHS-compliant
µMAX package.
Features and Benets
● 6V to 60V Input Voltage Range
● 5V Output, 100mA Continuous Current
● 93% Peak Efficiency
● 26µA No-Load Supply Current
● EN/UVLO for On/Off Control and Programmable
Input Undervoltage Lockout
● Programmable Switching Frequency
● Internal or Programmable Soft-Start
● PFM or Forced-PWM Mode of Operation
● RESET Output
● Peak Current-Limit Protection
● Thermal Shutdown
● Proven PCB Layout
● Fully Assembled and Tested
Quick Start
Recommended Equipment
● MAX17552 5V EV kit (µMAX)
● 60V adjustable, 0.5A DC power supply
● Electronic load up to 100mA
● Voltmeter
Procedure
The EV kit is fully assembled and tested. Follow the steps
below to verify board operation. Caution: Do not turn on
the power supply until all connections are completed.
1) Verify that shunts are installed on jumpers JU1 and
JU2 (EN/UVLO).
2)
Verify that jumper JU3 (MODE-PFM operation) is open.
3) Set the electronic load to constant-current mode,
100mA, and disable the electronic load.
4) Connect the electronic load’s positive terminal to the
VOUT PCB pad. Connect the negative terminal to
the GND PCB pad.
5) Connect the voltmeter across the VOUT and GND
PCB pads.
6) Set the power-supply output to 24V. Disable the
power supply.
7) Connect the power-supply output to the VIN PCB
pad. Connect the supply ground to the GND PCB
pad.
8) Turn on the power supply.
9) Enable the electronic load and verify that output
voltage is 5V with respect to GND.
10) Vary the input voltage from 6V to 60V.
11) Vary the load current from 1mA to 100mA and verify
that output voltage is 5V with respect to GND.
Note: While performing an output short-circuit test, it is
possible for the ceramic output capacitor to oscillate with
the wiring inductance between the capacitor and short-
circuited load, and thereby cause the absolute maximum
rating of VOUT pin (-0.3V) to be exceeded. The resistor
(R7) and the capacitor (C5) are included on this EV kit to
protect against unintentional violation of the above men-
tioned rating. In the actual system design, parasitic board
or wiring inductance should be minimized and the output-
voltage waveform under short-circuit operation should be
verified to ensure that the absolute maximum rating of
VOUT pin is not exceeded.
19-6906; Rev 1; 4/14
Ordering Information appears at end of data sheet.
μMAX is a registered trademark of Maxim Integrated Products,
Inc.