Datasheet
Evaluates: MAX17552 (TDFN) in
5V Output Voltage Applications
MAX17552 5V Output
Evaluation Kit (TDFN)
General Description
The MAX17552 5V evaluation kit (EV kit) (TDFN) is a fully
assembled and tested circuit board that demonstrates the
performance of the MAX17552 60V, 100mA ultra-small,
high-efficiency, synchronous step-down DC-DC converter
in a 10-pin TDFN package. The EV kit operates over a
wide input-voltage range of 6V to 60V and provides up
to 100mA load current at 5V output. It draws only 26µA
supply current under no-load conditions (EN/UVLO con-
nected 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 configurable 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 MAX17552ATB+ in
an 10-pin (3mm x 3mm) lead(Pb)-free/RoHS-compliant
TDFN 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
● Open-Drain RESET Output
● Peak Current Limit Protection
● Thermal Shutdown
● Proven PCB Layout
● Fully Assembled and Tested
Quick Start
Recommended Equipment
● MAX17552 5V EV kit (TDFN)
● 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, 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 volt-
age 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 the V
OUT
pin (-0.3V) to be exceeded. The
resistor (R7) and the capacitor (C5) are included on this
evaluation kit to protect against unintentional violation of
the above mentioned 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 the V
OUT
pin is not exceeded.
19-6905; Rev 1; 4/14
Ordering Information appears at end of data sheet.
TDFN is a registered trademark of Maxim Integrated Products, Inc.