Datasheet

Evaluates: MAX17504 in
3.3V Output-Voltage Application
MAX17504 3.3V Output Evaluation Kit
General Description
The MAX17504 3.3V output evaluation kit (EV kit) provides
a proven design to evaluate the MAX17504 high-voltage,
high-efficiency, synchronous step-down DC-DC convert-
er. The EV kit is preset for 3.3V output at load currents
up to 3.5A and features a 450kHz switching frequency for
optimum efficiency and component size. The EV kit
features adjustable input undervoltage lockout, adjust-
able soft-start, open-drain RESET signal, and external
frequency synchronization.
Features
● Operatesfroma5Vto60VInputSupply
● 3.3VOutputVoltage
● Upto3.5AOutputCurrent
● 450kHzSwitchingFrequency
● Enable/UVLOInput,Resistor-ProgrammableUVLO
Threshold
● AdjustableSoft-StartTime
● MODEPintoSelectAmongPWM,PFM,orDCM
Modes
● Open-DrainRESETOutput
● ExternalFrequencySynchronization
● OvercurrentandOvertemperatureProtection
● ProvenPCBLayout
● FullyAssembledandTested
19-6888; Rev 1; 2/14
Ordering Information appears at end of data sheet.
*EP = Exposed pad.
Note: C7, R1, and R2 are optional components; R1 and R2
are not needed if the EN/UVLO pin is permanently connected
to VIN. The electrolytic capacitor (C7) is required only when
the VIN power supply is situated far from the MAX17504-based
circuit. When R5 is open, the device switches at 500kHz switch-
ing frequency. The MSS1048 inductor has been used to prepare
the EV kit test report.
DESIGNATION QTY DESCRIPTION
C1, C8 2
2.2µF±10%,100VX7Rceramic
capacitors (1210)
MurataGRM32ER72A225KA35
C2 1
2.2µF±10%,10VX7Rceramic
capacitor(0603)
MurataGRM188R71A225K
C3 1
12000pF±10%,16VX7Rceramic
capacitor (0402)
MurataGRM155R71C123K
C4, C9 2
22µF±10%,10VX7Rceramic
capacitors (1210)
MurataGRM32ER71A226K
C5 1
0.1µF±10%,16VX7Rceramic
capacitor (0402)
MurataGRM155R71C104K
C6 0
Not installed, ceramic capacitor
(0402)
C7 1
47µF,80Valuminumelectrolytic
capacitor (D = 10mm)
PanasonicEEEFK1K470P
JU1–JU3 3 3-pin headers
DESIGNATION QTY DESCRIPTION
L1 1
6.8µH,5Ainductor
CoilcraftMSS1048-682NL
CooperBussmannDR125-6R8-R
R1 1 3.32MΩ±1%resistor(0402)
R2 1 750kΩ±1%resistor(0402)
R3 1 82.5kΩ±1%resistor(0402)
R4 1 30.9kΩ±1%resistor(0402)
R5 1 45.3kΩ±1%resistor(0402)
R6 1 10kΩ±1%resistor(0402)
TP1,TP2 2 Test pads
U1 1
Buckconverter(20TQFN-EP*)
MaximMAX17504ATP+
— 3 Shunts(JU1–JU3)
— 1
PCB:MAX17504–3.3VOutput
EVKIT
Component List