AMS1117-3.3V

ＡＭＳ１１１７系列 800mA Bipolar Linear Regulator Features  Maximum output current is 1.2A  Standby current: 2mA (typ.)  Range of operation input voltage: Max 15V  Load regulation: 0.2%/A (typ.)  Line regulation: 0.03%/V (typ.)  Environment Temperature: -20℃~85℃ Power Management for Computer Mother  DVD Decode Board Board, Graphic Card  ADSL Modem LCD Monitor and LCD TV  Post Regulators For Switching Supplies Applications   JS MI General Description AMS1117offers thermal shut down function, to assure regulators with a dropout of 1.3V at 800mA load current. the stability of chip and power system. And it uses AMS1117features a very low standby current 2mA trimming technique toguarantee output voltage accuracy compared to 5mA of competitor. within O CR AMS1117is a series of low dropout three-terminal 2%. Other output voltage accuracy can be Other than a fixed version, Vout = 1.2V, 1.8V, 2.5V, 2.85V， customized on demand, such as 3.3V, and 5V, AMS1117has an adjustable version, which AMS1117is available in SOT-223, TO-252,SOT-89 Se can provide an output voltage from 1.25 to 12V with only two external resistors. 1%. power package. mi Typical Application co r to uc nd Application circuit of AMS1117fixed version Typical Electrical Characteristic www.jsmsemi.com 第１／１０页 ＡＭＳ１１１７系列 800mA Bipolar Linear Regulator Selection Table Marking Part No. Output Voltage XX=12 1.2V XX=18 1.8V XX=28 2.85V XX=25 2.5V XX=33 3.3V XX=50 5.0V XX=AD Adj 1117 XXYYWW JS MI Designator Description 1117 Product code XX Output Voltage(1.2~12.0V) YYWW DATE CODE O 1117 XXYYWW SOT-223 TO-252 SOT-89 CR Ordering Information Marking Package Temperature&Rohs C:-40~85℃ ,Pb Free Rohs Std. L:SOT-223 O:TO-252 co Package type Description mi Parameters Se Note:”XX” stands for output voltages. Other voltages can be specially customized TR:Tape&Reel (Standard) Voltage accuracy 2%(Customized) r to uc nd Packing type: Block Diagram Pin Configuration www.jsmsemi.com 第２／１０页 ＡＭＳ１１１７系列 800mA Bipolar Linear Regulator JS Absolute Maximum Ratings Max Input Voltage··················································································· ······················ ·· 30V MI Max Operating Junction Temperature(Tj)····················································· ······················ ·· 150℃ Ambient Temperature(Ta)······························································································· ·· -40℃~ 85℃ CR Storage Temperature(Ts)········································································· ······················ ·· -40℃~150℃ Lead Temperature & Time········································································ ······················ ·· 260℃ 10S device reliability. O Caution: Exceed these limits to damage to the device. Exposure to absolute maximum rating conditions may affect Se Recommended Work Conditions Recommended maximum input voltage··········································································· ········ mi Recommended operating junction temperature(Tj)····································································· SOT-223 Rating Unit 20 ℃/W 12.5 SOT89 200 www.jsmsemi.com -20~125℃ ℃/W ℃/W r to uc TO-252 nd Package thermal resistance co Thermal Information Parameter Package 15V 第３／１０页 ＡＭＳ１１１７系列 800mA Bipolar Linear Regulator Electrical Characteristics TA=25℃,unless otherwise noted. Symbol Parameter Vref Reference voltage Conditions AMS1117-Adj Min Typ Max Unit 1.225 1.25 1.275 V 1.176 1.2 1.224 V 1.764 1.8 1.836 V 2.45 2.5 2.55 V 2.793 2.85 2.907 V 3.234 3.3 3.366 V 4.9 5 5.1 V 0.03 0.2 %/V 0.03 0.2 %/V 0.03 0.2 %/V 0.03 0.2 %/V 10mA≤Iout≤800mA , Vin=3.25V AMS1117-1.2V 0≤Iout≤800mA , Vin=3.2V AMS1117-1.8V 0≤Iout≤800mA , Vin=3.8V JS Vout AMS1117-2.5V Output voltage 0≤Iout≤800mA , Vin=4.5V MI AMS1117-2.85V 0≤Iout≤800mA , Vin=4.85V CR AMS1117-3.3V 0≤Iout≤800mA , Vin=5.3V O AMS1117-5.0V 0≤Iout≤800mA , Vin=7.0V Se AMS1117-1.2V AMS1117-ADJ Iout=10mA, 2.75V≤Vin≤12V AMS1117-1.8V Iout=10mA, 3.3V≤Vin≤12V Line regulation AMS1117-2.5V Iout=10mA, 4.0V≤Vin≤12V AMS1117-2.85V Iout=10mA, 4.35V≤Vin≤12V AMS1117-3.3V Iout=10mA, 4.8V≤Vin≤12V AMS1117-5.0V Iout=10mA, 6.5V≤Vin≤12V AMS1117-1.2V r to uc nd △Vout co mi Iout=10mA, 2.7V≤Vin≤10V 0.03 0.2 %/V 0.03 0.2 %/V 0.03 0.2 %/V 2 8 mV 2 8 mV 3 12 mV 4 16 mV Vin =2.7V, 10mA≤Iout≤800mA AMS1117-ADJ Vin =2.75V, 10mA≤Iout≤800mA AMS1117-1.8V Vin =3.3V, 10mA≤Iout≤800mA △Vout Load regulation AMS1117-2.5V Vin =4.0V, 10mA≤Iout≤800mA www.jsmsemi.com 第４／１０页 ＡＭＳ１１１７系列 800mA Bipolar Linear Regulator 5 20 mV 6 24 mV 9 36 mV Iout =100mA 1.2 1.3 V Iout=800mA 1.3 1.5 V AMS1117-ADJ 2 10 mA AMS1117-1.2V,Vin=10V 2 5 mA AMS1117-1.8V,Vin=12V 2 5 mA AMS1117-2.5V,Vin=12V 2 5 mA AMS1117-2.85V,Vin=12V 2 5 mA AMS1117-3.3V,Vin=12V 2 5 mA AMS1117-5.0V,Vin=12V 2 5 mA AMS1117-ADJ 55 120 uA 0.2 10 uA AMS1117-2.85V Vin =4.35V, 10mA≤Iout≤800mA AMS1117-3.3 Vin =4.8V, 10mA≤Iout≤800mA AMS1117-5.0 Vin =6.5V, 10mA≤Iout≤800mA Vdrop Minimum load JS Imin Dropout voltage current MI Iq Quiescent Adjust pin Ichange Iadj change Vin=5V,10mA≤Iout≤800mA Se current O IAdj CR Current AMS1117-ADJ ΔV/ΔT Temperature θJC SOT-223 resistance TO-252 20 nd Thermal ppm ±100 co coefficien mi Vin=5V,10mA≤Iout≤800mA 10 ℃/W Note1: All test are conducted under ambient temperature 25°C and within a short period of time 20ms r to uc Note2: Load current smaller than minimum load current of AMS1117-ADJ will lead to unstable or oscillation output. www.jsmsemi.com 第５／１０页 ＡＭＳ１１１７系列 800mA Bipolar Linear Regulator Detailed Description AMS1117is a series of low dropout voltage, three terminal regulators. Its application circuit is very simple: the fixed version only needs two capacitors and the adjustable version only needs two resistors and two capacitors to work. It is composed of some modules including start-up circuit, bias circuit, bandgap, thermal shutdown, power transistors and its driver circuit and so on. The thermal shut down modules can assure chip and its application system working safety when the junction temperature is larger than 140°C. The bandgap module provides stable reference voltage, whose temperature coefficient is compensated by careful design considerations. The temperature coefficient is under 100 ppm/°C. And the accuracy of output voltage is guaranteed by JS trimming technique. MI Typical Application AMS1117has an adjustable version and six fixed versions (1.2V, 1.8V, 2.5V, 2.85V , 3.3V and 5V) O CR Fixed Output Voltage Version Se Application circuit of AMS1117fixed version mi 1) Recommend using 10uF tan capacitor as bypass capacitor (C1) for all application circuit. 2) Recommend using 10uF tan capacitor to assure circuit stability. co Adjustable Output Voltage Version r to uc nd Application Circuit of AMS1117-ADJ The output voltage of adjustable version follows the equation: Vout=1.25×(1+R2/R1)+IAdj×R2. We can ignore IAdj because IAdj (about 50uA) is much less than the current of R1 (about 2~10mA). 1) To meet the minimum load current (>10mA) requirement, R1 is recommended to be 125ohm or lower. As HS1117C-ADJ can keep itself stable at load current about 2mA, R1 is not allowed to be higher than 625ohm. 2) Using a bypass capacitor (CADJ) between the ADJ pin and ground can improve ripple rejection. This bypass capacitor prevents ripple from being amplified as the output voltage is increased. The impedance of CADJ should be less than R1 to prevent ripple from being amplified. As R1 is normally in the range of 100Ω~500Ω, the value of CADJ should satisfy this equation: 1/(2π×fripple×CADJ)