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HT72B25 Datasheet(PDF) 1 Page - Holtek Semiconductor Inc |
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HT72B25 Datasheet(HTML) 1 Page - Holtek Semiconductor Inc |
1 / 13 page Rev. 1.00 1 August 24, 2011 Rev. 0.00 PB August 24, 2011 HT72Bxx High PSRR 300mA LDO Regulator Features • OutputVoltage:1.5V/1.8V/2.5V/2.8V/ 3.0V/3.3V/5V • HighOutputVoltageAccuracy:±2% • HT72B25LowVoltageDrop:0.34V(Typ.) (VOUT=2.5V@IOUT=300mA) • MaximumInputVoltage:7.0V • GuaranteedOutputCurrent:300mA • LowPowerConsumption:18uA(Typ.) • HighRippleRejection:70dB(1kHz@IOUT=30mA) • Power-savingShutdownMode • OverTemperatureProtection • CurrentLimiting • SOT23-5,SOT89Package Applications • Portablecommunicationequipment • Portablemusicplayer • Electricalappliancessuchascameras,VCRsand camcorders • Battery-poweredequipment General Description The HT72Bxx series are CMOS-based voltage regulatorICswithhighoutputvoltageaccuracy,low quiescentcurrent,lowonResistance,andhighripple rejection.EachoftheseICsconsistsofavoltage referenceunit,anerroramplifier,resistor-netfor voltagesetting,acurrentlimitcircuit,achipenable circuit,andsoon. TheHT72Bxx’scurrentlimiters'foldbackcircuit alsooperatesasashortcircuitprotectfunctionforthe outputcurrentlimiter. TheseICsperformwithlowdropoutvoltageandthe chip-enablefunction.ThequiescentcurrentofthisIC isonly18μA,andthelinetransientresponseandthe loadtransientresponseofHT72Bxxareexcellent, thustheseICsareverysuitableforthepowersupply forhand-heldcommunicationequipment. Thespace-savingSOT23-5,SOT89packagewillbe anattractiveadditionalfeatureforpocketandhand- heldapplications. Selection Table Part No. Output Voltage Tolerance Package HT72B15 1.5V ±2% SOT23-5 SOT89 HT72B18 1.8V HT72B25 2.5V HT72B28 2.8V HT72B30 3.0V HT72B33 3.3V HT72B50 5.0V |
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