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MAX17502EATB+ Datasheet(PDF) 9 Page - Maxim Integrated Products |
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MAX17502EATB+ Datasheet(HTML) 9 Page - Maxim Integrated Products |
9 / 21 page MAX17502 60V, 1A, Ultra-Small, High-Efficiency, Synchronous Step-Down DC-DC Converter www.maximintegrated.com Maxim Integrated │ 9 Pin Description Pin Configurations PIN NAME FUNCTION TDFN TSSOP 1 1 PGND PowerGround.ConnectPGNDexternallytothepowergroundplane.ConnectGNDandPGND pins together at the ground return path of the VCC bypass capacitor. 2 3 VIN Power-Supply Input. The input supply range is from 4.5V to 60V. 3 4 EN/UVLO Enable/Undervoltage Lockout Input. Drive EN/UVLO high to enable the output voltage. Connect to the center of the resistive divider between VINandGNDtosettheinputvoltage(undervoltage threshold) at which the device turns on. Pull up to VIN for always on. 4 6 VCC 5VLDOOutput.BypassVCCwith1µFceramiccapacitancetoGND. 5 7 FB/VO Feedback Input. For fixed output voltage devices, directly connect FB/VO to the output. For adjustableoutputvoltagedevices,connectFB/VOtothecenteroftheresistivedividerbetween VOUTandGND. 6 8 SS Soft-StartInput.ConnectacapacitorfromSStoGNDtosetthesoft-starttime. 7 9 N.C./COMP For fixed output voltage devices, leave this pin unconnected. For adjustable output voltage devices,connectanRCnetworkfromCOMPtoGND. 8 10 RESET Open-Drain RESET Output. The RESEToutputisdrivenlowifFBdropsbelow92.5%ofitsset value. RESETgoeshigh1024clockcyclesafterFBrisesabove95.5%ofitssetvalue. 9 11 GND AnalogGround 10 13, 14 LX Switching Node. Connect LX to the switching side of the inductor. LX is high impedance when the device is in shutdown mode. — 2, 5, 12 N.C. No Connection. Not internally connected. — EP ExposedPad.ConnecttotheGNDpinoftheIC.ConnecttoalargecopperplanebelowtheIC to improve heat dissipation capability. 14 13 12 11 10 9 8 1 2 3 4 5 6 7 LX LX N.C. GND EN/UVLO VIN N.C. PGND TOP VIEW MAX17502 RESET N.C./COMP SS EP* FB/VO VCC N.C. TSSOP (5mm x 4.4mm) + TOP VIEW *EP = EXPOSED PAD. CONNECT TO GND TDFN (3mm x 2mm) MAX17502 1 2 3 4 5 PGND VIN EN/UVLO VCC FB/VO LX GND RESET N.C./COMP SS + EP* 10 9 8 7 6 |
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