AMS117 5.0V

A M S 1117 800MA Bipolar Linear Regulator General Description Features AMS1117 is a series of low dropout three-terminal  Maximum output current is 1.2A regulators with a dropout of 1.3V at 800mA load current.  Range of operation input voltage: Max 15V AMS1117 features a very low standby current 2mA  Line regulation: 0.03%/V (typ.) compared to 5mA of competitor.  Standby current: 2mA (typ.) Other than a fixed version, Vout = 1.2V, 1.8V, 2.5V, 2.85V，  Load regulation: 0.2%/A (typ.) 3.3V, and 5V, AMS1117 has an adjustable version, which  Environment Temperature: -20℃~85℃ can provide an output voltage from 1.25 to 12V with only two external resistors. Applications AMS1117 offers thermal shut down function, to assure the  Power Management for Computer Mother Board, Graphic Card stability of chip and power system. And it uses trimming technique to guarantee output voltage accuracy within  LCD Monitor and LCD TV 2%. Other output voltage accuracy can be customized on  DVD Decode Board demand, such as  ADSL Modem  Post Regulators For Switching Supplies 1%. AMS1117 is available in SOT-223, TO-252 power package. Typical Application Application circuit of AMS1117 fixed version Typical Electrical Characteristic 1 Jul,2018 A M S 1117 800MA Bipolar Linear Regulator Selection Table Marking Part No. Output Voltage XX=12 1.2V XX=18 1.8V AMS1117 XX=28 2.85V XX YYWW XX=25 2.5V XX=33 3.3V XX=50 5.0V XX=AD Adj Package SOT-223 Parameters Description Temperature & Rohs C:-40~85℃ ,Pb Free Rohs Std. Package type L:SOT-223 O:TO-252 Packing type: TR: Tape & Reel (Standard) Voltage accuracy 2%(Customized) Block Diagram 2 Jul,2018 A M S 1117 800MA Bipolar Linear Regulator Pin Configuration TO-252 Top View SOT-223 Top View 1 2 3 1 2 3 1: GND/ADJ 2: VOUT 3: VIN 1: GND/ADJ 2: VOUT 3: VIN Absolute Maximum Ratings Max Input Voltage ·········································································································30V Max Operating Junction Temperature(Tj) ···········································································150℃ Ambient Temperature(Ta) ·······························································································-40℃~ 85℃ Storage Temperature(Ts) ································································································ -40℃~150℃ Lead Temperature & Time·······························································································260℃ 10S Caution: Exceed these limits to damage to the device. Exposure to absolute maximum rating conditions may affect device reliability. Recommended Work Conditions Recommended maximum input voltage ··················································································· 15V Recommended operating junction temperature(Tj) ···································································· -20~125℃ Thermal Information Parameter Package Package thermal resistance Rating Unit SOT-223 20 ℃/W TO-252 12.5 ℃/W 3 Jul,2018 A M S 1117 800MA Bipolar Linear Regulator Electrical Characteristics TA=25℃, unless otherwise noted. Symbol Vref Vout Parameter Reference voltage Output voltage Min. Typ. Max. Iout=10mA, Vin-Vout=2V 10mA≤Iout≤1A ,1.5V≤Vin-Vout≤12V 1.238 1.225 1.25 1.25 1.262 1.275 AMS1117-1.8V Iout=10mA,Vin=3.8V,Tj=25℃ 0≤Iout≤800mA ,3.2V≤Vin≤12V 1.782 1.764 1.80 1.80 1.818 1.836 V AMS1117-2.5V Iout=10mA,Vin=4.5V,Tj=25℃ 0≤Iout≤800mA ,3.9V≤Vin≤12V 2.475 2.45 2.5 2.5 2.525 2.55 V AMS1117-2.85V Iout=10mA,Vin=4.85V,Tj=25℃ 0≤Iout≤800mA ,4.25V≤Vin≤12V 2.822 2.793 2.85 2.85 2.878 2.907 V AMS1117-3.3V Iout=10mA,Vin=5V,Tj=25℃ 0≤Iout≤800mA ,4.75V≤Vin≤12V 3.267 3.234 3.3 3.3 3.333 3.366 V 4.95 4.9 5 5 5.05 5.1 V 0.035 0.2 % AMS1117-1.8V Iout=10mA,3.2V≤Vin≤15V 9 18 mV AMS1117-2.5V Iout=10mA,3.9V≤Vin≤15V 9 18 mV AMS1117-2.85V Iout=10mA,4.25V≤Vin≤15V 9 18 mV AMS1117-3.3V Iout=10mA,4.75V≤Vin≤15V 9 18 mV AMS1117-5.0V Iout=10mA,6.5V≤Vin≤15V 9 18 mV Condition AMS1117-5.0V Iout=10mA,Vin=7V,Tj=25℃ 0≤Iout≤800mA ,6.5V≤Vin≤12V AMS1117-ADJ Iout=10mA,1.5V≤Vin-Vout≤13.775V ΔVout Ver1.0 Line regulation (note1) 4 Jul,2016 Unit V A M S 1117 800MA Bipolar Linear Regulator △Vout Load regulation AMS1117 -2.5V 3 18 mV 3 18 mV 3 18 mV 3 18 mV Iout =100mA 1.11 1.3 V Iout=500mA 1.18 1.4 V AMS1117 -ADJ 5 10 mA AMS1117-1.8V,Vin-Vout=1.25V 4 8 mA AMS1117-2.5V,Vin-Vout=1.25V 4 8 mA AMS1117-2.85V,Vin-Vout=1.25V 4 8 mA AMS1117-3.3V,Vin-Vout=1.25V 4 8 mA AMS1117-5.0V,Vin-Vout=1.25V 4 8 mA Vin =3.9V, 10mA≤Iout≤800mA AMS1117 -2.85V Vin=4.25V, 0≤Iout≤800mA AMS1117-3.3 Vin=4.75V, 0≤Iout≤800mA AMS1117-5.0 Vin=6.5V, 0≤Iout≤800mA Vdrop Imin Dropout voltage Minimum load current Iq Quiescent Current IAdj Adjust Pin Current (Adjustable Version) 55 120 uA Ichange Adjust Pin Current Change 0.2 10 uA 0.5 % Temperature Stability θJC Thermal resistor ℃/W 20 Note1: All test are conducted under ambient temperature 25°C and within a short period of time 20ms Note2: Load current smaller than minimum load current ofAMS1117-ADJ will lead to unstable or oscillation output. 5 Jul,2018 A M S 1117 800MA Bipolar Linear Regulator Detailed Description AMS1117 is 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 trimming technique. Typical Application has an adjustable version and six fixed versions (1.2V, 1.8V, 2.5V, 2.85V , 3.3V and 5V) Fixed Output Voltage Version Application circuit of AMS1117 fixed version 1) Recommend using 10uF tan capacitor as bypass capacitor (C1) for all application circuit. 2) Recommend using 10uF tan capacitor to assure circuit stability. Adjustable Output Voltage Version 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 AMS1117-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 C ADJ should be less than R1 to prevent ripple from being amplified. As R1 is normally in the range of 100Ω~500Ω, the value of C ADJ should satisfy this equation: 1/(2π×fripple×CADJ)