Transcription of 1A, Low Voltage, Low Dropout Regulator with …
1 2017 Microchip Technology 1 MIC39100/1/2 Features Fixed and Adjustable Output Voltages to 410 mV Typical Dropout at 1A Load- Best Recommended for to Conver-sion- Best Recommended for to Conver-sion 1A Minimum Guaranteed Output Current 1% Initial Accuracy Low Ground Current Current-Limiting and Thermal-Shutdown Protection Reversed-Battery and Reversed-Leakage Protection Fast Transient Response Low Profile SOT-223 Package Power SO-8 PackageApplications LDO Linear Regulator for PC Add-In Cards High-Efficiency Linear Power Supplies SMPS Post Regulator Multimedia and PC Processor Supplies Battery Chargers low voltage Microcontrollers and Digital LogicGeneral DescriptionThe MIC39100, MIC39101, and MIC39102 are 1A lowdropout linear voltage regulators that provide lowvoltage, high current output from an extremely smallpackage.
2 The MIC39100/1/2 offers extremely lowdropout (typically 410 mV at 1A) and low groundcurrent (typically 11 mA at 1A).The MIC39100 is a fixed output Regulator offered in theSOT-223 package. The MIC39101 and MIC39102 arefixed and adjustable regulators , respectively, in athermally enhanced 8-lead SOIC MIC39100/1/2 is ideal for PC add-in cards thatneed to convert from standard 5V to , to ,or to A guaranteed maximum dropoutvoltage of 630 mV over all operating conditions allowsthe MIC39100/1/2 to provide from a supply as lowas and from a supply as low as MIC39100/1/2 is fully protected with overcurrentlimiting, thermal-shutdown, and reverse-batteryprotection.
3 Fixed voltages of , , , and available on MIC39100/1 with adjustable outputvoltages to on TypesMIC39100-XX (FIXED)SOT-223 (S)(Top View)123 INGND OUTGNDTABMIC39101-XX (FIXED)SOIC-8 (M)(Top View)MIC39102 (ADJ.)SOIC-8 (M)(Top View)1 ENINOUTFLG8 GNDGNDGNDGND7652341 ENINOUTADJ8 GNDGNDGNDGND7652341A, low voltage , Low Dropout Regulatorwith Reversed-Battery ProtectionMIC39100/1/2DS20005834A-page 2 2017 Microchip Technology Application Regulator with Error FlagINR1100k Adjustable FTANTALUM 2017 Microchip Technology 3 MIC39100/1/2 Functional Block Diagrams18VO . V. Fixed . V.. V. ILIMITTHERMALSHUTDOWNREFERENCEMIC39101 Fixed Regulatorwith Flag and EnableMIC39102 Adjustable RegulatorMIC39100/1/2DS20005834A-page 4 2017 Microchip Technology CHARACTERISTICSA bsolute Maximum Ratings Supply voltage (VIN).
4 20V to +20 VEnable voltage (VEN) ..+20 VESD Rating ..Note 1 Maximum Power Dissipation (PD(MAX)) ..Note 2 Operating Ratings Supply voltage (VIN).. + to +16 VEnable voltage (VEN) ..+16V Notice: Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the is a stress rating only and functional operation of the device at those or any other conditions above those indicatedin the operational sections of this specification is not intended. Exposure to maximum rating conditions for extendedperiods may affect device reliability. Notice: The device is not guaranteed to function outside its operating 1:Devices are ESD sensitive. Handling precautions are recommended. Human body model, k in serieswith 100 :PD(MAX) = (TJ(MAX) TA) JA, where JA depends upon the printed circuit layout (see Application Informa-tion).
5 TABLE 1-1:ELECTRICAL CHARACTERISTICSE lectrical Characteristics: VIN = VOUT + 1V; VEN = ; TJ = +25 C, bold values indicate 40 C TJ +125 C, unless noted. Note VoltageVOUT 1 1%IOUT = 10 mA 2 210 mA IOUT 1A, VOUT +1V VIN 8 VLine Regulation = 10 mA, VOUT + 1V VIN 16 VLoad Regulation = VOUT + 1V, 10 mA IOUT 1 AOutput voltage Temperature Coefficient VOUT/ T 40100ppm/ CNote 2 Dropout voltage , Note 3 VDO 140200mVIOUT = 100 mA, VOUT = 1%250 275 IOUT = 500 mA, VOUT = 1% 300500 IOUT = 750 mA, VOUT = 1% 410550 IOUT = 1A, VOUT = 1%630 Ground Current, Note 4 IGND 400 AIOUT = 100 mA, VIN = VOUT + 1V 4 mAIOUT = 500 mA, VIN = VOUT + 1V IOUT = 750 mA, VIN = VOUT + 1V 1120 IOUT = 1A, VIN = VOUT + 1 VCurrent LimitIOUT(LIM) AVOUT = 0V, VIN = VOUT + 1 VEnable InputEnable Input VoltageVEN LOW (Off) Logic HIGH (On)
6 2017 Microchip Technology 5 MIC39100/1/2 Enable Input CurrentIEN11530 AVEN = 75 2 VEN = 4 Flag OutputOutput Leakage VoltageIFLG(LEAK) AVOH = 16V2 Output Low VoltageVFLG(DO) 210300mVVIN = , IOL = 250 A, Note 5400 Low ThresholdVFLG93 %% of VOUTHigh Threshold of VOUTH ysteresis 1 MIC39102 OnlyReference voltage = 10 6 Adjust Pin Bias Current 4080nA 120 Reference voltage Temperature Coefficient 20 ppm/ C Adjust Pin Bias Current Temperature Coefficient nA/ C Note 1:Specification for packaged product :Output voltage temperature coefficient is VOUT(WORST CASE) (TJ(MAX) TJ(MIN)), where TJ(MAX) = +125 C and TJ(MIN) = 40 :VDO = VIN VOUT when VOUT decreases to 99% of its nominal output voltage with VIN = VOUT + 1V.
7 For output voltages below , Dropout voltage is the input-to-output voltage differential with the minimum input voltage being Minimum input operating voltage is :IGND is the quiescent current (IIN = IGND + IOUT).5:For a device, VIN = (device is in Dropout ).6:VREF VOUT (VIN 1V), VIN 16V, 10 mA IL 1A, TJ = 1-1:ELECTRICAL CHARACTERISTICS (CONTINUED)Electrical Characteristics: VIN = VOUT + 1V; VEN = ; TJ = +25 C, bold values indicate 40 C TJ +125 C, unless noted. Note 6 2017 Microchip Technology SPECIFICATIONS (Note 1) RangesJunction Operating Temperature RangeTJ 40 +125 C Storage Temperature RangeTS 65 +150 C Lead Temperature +260 CSoldering, 5sPackage Thermal ResistancesThermal Resistance SOT-223 JC 15 C/W Thermal Resistance SOIC-8 JC 20 C/W Note 1:The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable junction temperature and the thermal resistance from junction to air ( , TA, TJ, JA).
8 Exceeding the maximum allowable power dissipation will cause the device operating junction temperature to exceed the maximum +125 C rating. Sustained junction temperatures above +125 C can impact the device reliability. 2017 Microchip Technology 7 MIC39100/1 PERFORMANCE CURVESFIGURE 2-1:Power Supply Rejection Ratio. FIGURE 2-2:Power Supply Rejection 2-3:Power Supply Rejection 2-4:Power Supply Rejection 2-5: Dropout voltage vs. Output 2-6: Dropout voltage vs. :The graphs and tables provided following this note are a statistical summary based on a limited number ofsamples and are provided for informational purposes only. The performance characteristics listed hereinare not tested or guaranteed. In some graphs or tables, the data presented may be outside the specifiedoperating range ( , outside specified power supply range) and therefore outside the warranted (dB)806040200101001K10K100K1 MVIN = 5 VVOUT = = 1 ACOUT = 10 FCIN = 0 FFREQUENCY (Hz)0204060801E+1 1E+2 1E+31E+41E+5 1E+6 PSRR (dB)FREQUENCY (Hz)VIN = 5 VVOUT = = 1 ACOUT = 47 FCIN = 0 F101001K10K100K1M0204060801E+1 1E+2 1E+31E+41E+5 1E+6 PSRR (dB)FREQUENCY (Hz)VIN = = = 1 ACOUT = 10 FCIN = 0 F101001K10K100K1M0204060801E+1 1E+2 1E+31E+41E+5 1E+6 PSRR (dB)FREQUENCY (Hz)VIN = = = 1 ACOUT = 47 FCIN = 0 +2 1E+31E+41E+5 1E+6 Dropout voltage (mV)OUTPUT CURRENT (mA)TA = 25 C02505007501000 voltage (mV)TEMPERATURE ( C)
9 ILOAD = +2 1E+31E+41E+5 40 20 020 40 60 80 100 120 MIC39100/1/2DS20005834A-page 8 2017 Microchip Technology 2-7: Dropout Characteristics ( ).FIGURE 2-8: Dropout Characteristics ( ).FIGURE 2-9:Ground Current vs. Output 2-10:Ground Current vs. Supply voltage ( ).FIGURE 2-11:Ground Current vs. Supply voltage ( ).FIGURE 2-12:Ground Current vs. Supply voltage ( ). voltage (V)SUPPLY voltage (V)ILOAD = +2 1E+31E+ = 750mAILOAD = voltage (V)SUPPLY voltage (V)ILOAD = 100mAILOAD = 750mAILOAD = +2 1E+31E+ CURRENT (mA)OUTPUT CURRENT (mA) CURRENT (mA)SUPPLY voltage (V)ILOAD = 100mAILOAD = CURRENT (mA)SUPPLY voltage (V)ILOAD = 1A1015502468035202530 GROUND CURRENT (mA)SUPPLY voltage (V)ILOAD = 100mAILOAD = 2017 Microchip Technology 9 MIC39100/1/2 FIGURE 2-13:Ground Current vs.
10 Supply voltage ( ).FIGURE 2-14:Ground Current vs. 2-15:Ground Current vs. 2-16:Ground Current vs. 2-17:Output voltage vs. 2-18:Short-Circuit vs. CURRENT (mA)SUPPLY voltage (V)ILOAD = 1A4050201030024680 GROUND CURRENT (mA)TEMPERATURE ( C)ILOAD = 40 20020 40060 80 100 CURRENT (mA)TEMPERATURE ( C)ILOAD = 40 20020 80 100 CURRENT (mA)TEMPERATURE ( C)ILOAD = 1A152010 40 20020 4060 80 100 voltage (V)TEMPERATURE ( C) 40 20020 4060 80 100 120 TYPICAL CURRENT (A)TEMPERATURE ( C) 40 20020 80 100 10 2017 Microchip Technology 2-19:Error Flag voltage vs. Pull-Up Resistor 2-20:Enable Current vs. 2-21:Flag- low voltage vs. 2-22:Load Transient 2-23:Load Transient 2-24.
