Datasheet

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MaximIntegrated │ 13
MAX15062 60V, 300mA, Ultra-Small, High-Efciency,
Synchronous Step-Down DC-DC Converters
Pin Description
Pin Conguration
PIN NAME FUNCTION
1 V
IN
SwitchingRegulatorPowerInput.ConnectaX7R1µFceramiccapacitorfromV
IN
toGNDforbypassing.
2 EN/UVLO
Active-High,Enable/Undervoltage-DetectionInput.PullEN/UVLOtoGNDtodisabletheregulatoroutput.
Connect EN/UVLO to V
IN
for always-on operation. Connect a resistor-divider between V
IN
and EN/UVLO
toGNDtoprogramtheinputvoltageatwhichthedeviceisenabledandturnson.
3 V
CC
InternalLDOPowerOutput.BypassV
CC
toGNDwithaminimum1µFcapacitor.
4 FB/V
OUT
FeedbackInput.Forxedoutputvoltageversions,connectFB/V
OUT
directly to the output. For the
adjustable output voltage version, connect FB/V
OUT
to a resistor-divider between V
OUT
andGNDto
adjust the output voltage from 0.9V to 0.89 x V
IN
.
5 MODE
PFM/PWMModeSelectionInput.ConnectMODEtoGNDtoenablethexed-frequencyPWMoperation.
Leave unconnected for light-load PFM operation.
6 RESET
Open-DrainResetOutput.PullupRESET to an external power supply with an external resistor.
RESET goes low when the output voltage drops below 92% of the set nominal regulated voltage. RESET
goes high impedance 2ms after the output voltage rises above 95% of its regulation value. See the
Electrical Characteristics table for threshold values.
7 GND
Ground.ConnectGNDtothepowergroundplane.Connectallthecircuitgroundconnectionstogetherat
a single point. See the PCB Layout Guidelines section.
8 LX
InductorConnection.ConnectLXtotheswitchingsideoftheinductor.LXishighimpedancewhenthe
device is in shutdown.
1
+
34
865
LX RESET MODE
2
7
GND
V
IN
V
CC
FB/V
OUT
EN/UVLO
TDFN
(2mm x 2mm)
TOP VIEW
MAX15062