AMS1117CD-ADJ

AMS1117 et 1A LDO Voltage Regulator DESCRIPTION The AMS1117 is a positive low voltage dropout regulator; typical voltage dropout is only 1.2V at 1A. AMS1117 provides two versions: fixed and adjustable versions. VOUT has a tolerance of less than 1.5% for fixed TO-252-2L versions 1.2V 1.5V, 1.8V, 2.5V, 3.3V, 5.0V and adjustable version or 2% output accuracy for fixed version 1.2V. The AMS1117 offers some key features include thermal shutdown and current limiting. It is suitable for all electronic products. SOT-223-3L SOT-89-3L FEATURES  1.5% output accuracy for fixed versions 1.2V,1.5V, 1.8V 2.5V, 3.3V, 5.0V and adjustable version  Adjustable output voltage  Low Dropout Voltage: Typical 1.2V@1A  Current Limiting  Thermal Shutdown  Temperature Range: -40C to 125C APPLICATIONS  Laptop, Palmtop, and Notebook Computers  Battery Charger  SCSI-II Active Terminator  Cellular Phone  Cordless Telephones  Battery Powered Systems  Portable Instrumentation  SMPS Post-Regulator NOMENCLATURE AMS1117 Device S:SOT-89-3L Package ADJ: Adjustable output 1.2: Fixed output 1.2V 1.5: Fixed output 1.5V 1.8: Fixed output 1.8V 2.5: Fixed output 2.5V 3.3: Fixed output 3.3V 5.0: Fixed output 5.0V : SOT-223-3L CD: TO-252-2L : SOT-89-3L www.umw-ic.com 1 友台半导体有限公司 et BLOCK DIAGRAM 3 AMS1117 1A LDO Voltage Regulator VIN TSD Current Limit VOUT BandGap 2 Fixed: F1 and F2 connect, disconnect A F1 Adj: A connect, F1 and F2 disconnect F2 A ADJ/GND 1 ABSOLUTE MAXIMUM RATINGS Characteristics Symbol Rating Unit VIN 18 V TLead 260 °C Operating Junction Temperature Range TJ 150 °C Storage Temperature Range Tstg -65 ~ +150 V Power Dissipation PD Internally Limited (Note1) mW Input Supply Voltage Lead Temperature (Soldering, 5 seconds) Thermal Resistance from Junction to Ambient SOT-223-3L 88 TO-252-2L Rja 86 SOT-89-3L ℃/W 102 ESD Tolerance (Minimum) ESD 2000 V Note1: The maximum allowable power dissipation is a function of maximum operating junction temperature, TJ (max), the junction to ambient thermal resistance, Rja, and the ambient temperature Tamb. The maximum allowable power dissipation at any ambient temperature is given: PD (max) = (TJ (max) - Tamb)/ Rja, exceeding the maximum allowable power limit will result in excessive die temperature; thus, the regulator will go into thermal shutdown. The junction to ambient thermal resistance, θJA of some packages may be different, The value of θJA depends on mounting technique. RECOMMENDED OPERATING CONDITIONS Characteristics Symbol Rating Unit Input voltage VIN 12 V Operating Junction Temperature Range TJ -40 ~ +125 °C www.umw-ic.com 2 友台半导体有限公司 et ELECTRICAL CHARACTERISTICS Characteristics Symbol Conditions AMS1117-ADJ, Reference Voltage VREF IOUT=10mA, VIN-VOUT=2V, TJ=25C 10mA≤IOUT≤1A, 1.4V≤VIN-VOUT≤10V AMS1117-1.2, IOUT=10mΑ, VIN=3.2V ,TJ=25C 10mA≤IOUT≤1A, 3.0V≤VIN≤10V AMS1117-1.5, IOUT=10mΑ, VIN=3.5V ,TJ=25C 10mA≤IOUT≤1A, 3.0V≤VIN≤10V AMS1117-1.8, IOUT=10mA, VIN=3.8V, TJ=25C , Output Voltage VOUT 0≤IOUT≤1A, 3.2V≤VIN≤10V AMS1117-2.5, IOUT=10mA, VIN=4.5V,TJ=25C , 0≤IOUT≤1A, 3.9V≤VIN ≤10V AMS1117-3.3, IOUT=10mA, VIN=5V,TJ=25C , 0≤IOUT≤1A, 4.75V≤VIN≤10V AMS1117-5.0, IOUT=10mA, VIN=7V, TJ=25C , 0≤ IOUT≤1A, 6.5V≤VIN≤12V Output Voltage Temperature Stability TSOUT Line Regulation Rline Load Regulation Rload VINMIN ≤VIN≤ 12V, VOUT=Fixed/Adj,IOUT=10mA 10mA≤IOUT≤1A, VOUT=Fixed/Adj AMS1117 1A LDO Voltage Regulator Min. Typ. Max. 1.231 1.250 1.268 1.225 1.250 1.275 1.176 1.2 1.224 1.152 1.2 1.248 1.477 1.500 1.5221 1.470 1.500 .530 1.7731 1.800 1.827 .746 1.800 1.854 2.462 2.500 2.538 2.450 2.500 2.550 3.250 3.300 3.349 3.235 3.300 3.365 4.925 5.000 5.075 4.900 5.000 5.10 -- 0.3 -- % -- 9 18 mV -- 10 18 mV 1.00 1.20 1.05 1.25 1.20 1.30 -- 5 10 mA 60 75 -- dB -- 60 120 A -- 0.2 5 A IOUT=100mA Dropout Voltage Vdrop IOUT=500mA -- IOUT=1A Quiescent Current Ripple Rejection Adjust pin Current Iq PSRR 4.25V≤VIN≤ 6.5V fRIPPLE=120Hz, (VIN-VOUT)=3V, VRIPPLE=1VPP Iadj 0≤ IOUT≤1A, 1.4V ≤VIN-VOUT≤10V Adjust pin Current Change Unit V V V V V V V V Thermal shutdown TSD -- 150 -- °C Current limitting Ilimit 2.1 -- 2.5 A -- 0.5 -- % -- 0. 3 -- % Temperature Stabiliy Long Term Stability www.umw-ic.com TA=125°C, 1000Hrs 3 友台半导体有限公司 et Characteristics Symbol Conditions % of VOUT, 10Hz≤f≤10kHz RMS Output Noise AMS1117 1A LDO Voltage Regulator Min. Typ. Max. Unit -- 0.003 -- % PIN CONFIGURATION TO-252-2L 3 ADJ/GND VOUT VIN 1 ADJ/GND VOUT 2 VIN ADJ/GND 1 3 PIN DESCRIPTION Pin No. Pin name I/O 1 GND/ADJ --/O 2 VOUT O Output voltage 3 VIN I Input supply voltage 2 3 VIN 3.3 XXXX 3.3 xxxx 2 STK17 3.3 KXXX 1117 CD AMS1117 1 SOT-89-3L VOUT SOT-223-3L Functions Ground/ADJ FUNCTION DESCRIPTION The AMS1117 is a LDO regulator, it’s pass transistor is made up of a single NPN transistor being driven by a PNP. The dropout voltage is defined as: VDROP = VBE+ VSAT. The AMS1117 series of fixed and adjustable regulators are easy to use. Output voltages are 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, and 5.0V.On-chip thermal shut down provides protection against any combination of overload and ambient temperature that would create excessive junction temperature. The AMS1117 requires an output capacitor for device stability. Its value of 22F tantalum covers all cases of bypassing the adjustment terminal. Without bypassing the adjustment terminal smaller capacitors can be used with equally good results which depend upon the application circuit. In general, linear regulator stability decreases with higher output currents. www.umw-ic.com 4 友台半导体有限公司 AMS1117 et 1A LDO Voltage Regulator TYPICAL APPLICATION CIRCUIT VIN VIN AMS1117 VOUT VOUT GND 10F 22F Figure 1. Typical Fixed Output Voltage AMS1117-ADJ VIN VIN VOUT ADJ 10F VOUT R1 22F R2 VOUT=V REF x (1+R2/R1)+I ADJ x R2 Figure 2. Typical Adjustable Output Voltage Note: The circuit and parameters are reference only, please set the parameters of the real application circuit based on the real test. TYPICAL CHARACTERISTICS Temperature Stability Adjust Pin Current 100 90 1.5 Adjust pin current (A) Output voltage change(%) 2.0 1.0 0.5 0 -0.5 -1.0 -1.5 -2.0 -50 -25 0 40 30 20 10 0 -50 -25 25 50 75 100 125 150 Temperature(C) www.umw-ic.com 80 70 60 50 0 25 50 75 100 125 150 Temperature(C) 5 友台半导体有限公司 et AMS1117 1A LDO Voltage Regulator TYPICAL CHARACTERISTICS CURVES(continued) VOUT=5 V Load Transient Response 9.50 CIN =10F Input voltage deviation(V) 0.2 COUT =10F tantalum 0.1 VIN =6.5V Preload=100mA 0 -0.1 -0.2 8.50 7.50 CIN =1F COUT =10F tantalum IOUT =0.1A 6.50 40 Output Voltage deviation (mV) Load current (A) Output voltage deviation(V) 0.3 VOUT=5 V Line Transient Response 0.5 0 -0.5 0 50 100 20 0 -20 -40 0 20 40 60 80 100 120 140 160 180 200 Time(s) Time(s) Ripple Rejection VS Current 100 12 80 Power Dissipation(W) fRIPPLER=120Hz VRIPPLE3Vpp 90 Ripple relection(dB) Power Dissipation VS Ambient Temperature(SOT-223) 70 60 fRIPPLE=20KHz VRIPPLE0.5Vpp 50 40 30 VOUT=5V CADJ=25F COUT=25F 20 10 0 0 200 400 600 10 8 6 4 2 0 -40 -20 0 800 ILOAD(mA) test result of PCB 20 40 60 80 100 120 140 Ambient Temperature(°C) Power Dissipation VS Ambient Temperature(TO-252) Power Dissipation(W) 15 test result of PCB 12 9 6 3 0 -40 -20 0 www.umw-ic.com 20 40 60 80 100 120 140 Ambient Temperature(°C) 6 友台半导体有限公司 AMS1117 et PACKAGE OUTLINE 1A LDO Voltage Regulator SOT-223-3L UNIT: mm 5.90～6.70 3.00±0.20 0.90～1.15 0.30±0.10 7.00±0.30 3.50±0.30 0.25 2.30 TYP 0.70 +0.15 -0.10 4.60±0.15 1.65±0.15 1.60±0.15 0.00～0.10 0～10° UNIT: mm SOT-89-3L 4.50±0.30 2.45±0.30 1.00±0.20 4.155±0.40 1.50±0.20 2-0.42±0.20 0.48±0.20 0.40±0.20 3.00BSC www.umw-ic.com 7 友台半导体有限公司 et PACKAGE OUTLINE (continued) TO-252-2L AMS1117 1A LDO Voltage Regulator UNIT: mm NOTE1：There are two conditions for this position:has an eject pin or has no eject pin. www.umw-ic.com 8 友台半导体有限公司