@vic Features AV1117 Outline Dimension • Low dropout voltage • Load regulation: 0.05% typical • Trimmed current limit • On-chip thermal limiting • Three-terminal adjustable or fixed 2.5V, 2.85V, 3.3V, 5V • Surface mount package SOT-223 Applications • Active SCSI terminators • High efficiency linear regulators • Portable Top/Notebook computers • Post regulators for switching supplies • Battery chargers • 5V to 3.3V linear regulators • Motherboard clock supplies Description The AV1117 and AV1117-2.5, -2.85, -3.3 and -5 are low dropout three-terminal regulators with 1A output current capability. These devices have been optimized for low voltage where transient response and minimum input voltage are critical. The 2.85V version is designed specifically to be used in Active Terminators for SCSI bus. Current limit is trimmed to ensure specified output current and controlled short-circuit current. On-chip thermal limiting provides protection against any combination of overload and ambient temperatures that would create excessive junction temperatures. Unlike PNP type regulators where up to 10% of the output current is wasted as quiescent current, the quiescent current of the AV1117 flows into the load, increasing efficiency. The AV1117 series regulators are offered in three-pin surface mount package SOT-223. Copyright © Avic Electronics Corp. 1 Website: http://www.avictek.com @vic AV1117 Ordering Information Device Marking Package AV1117 AV1117 SOT-223 AV1117-xx AV1117-xx SOT-223 * XX(Output Voltage)= 2.5V, 2.85V, 3.0V, 5.0V Typical Applications AV1117 AV1117-2.85 Absolute Maximum Rating Characteristic (Ta=25℃) Symbol Ratings Unit DC Input Voltage VIN 7.5 V Lead Temperature (Soldering, 10sec) Tsol 260 ℃ Storage Temperature Range Tstg Operating Junction Temperature Range Topr Copyright © Avic Electronics Corp. -65℃ +150 0 ~ 125 2 ℃ ℃ Website: http://www.avictek.com @vic AV1117 Electrical Characteristics Operating Conditions: VIN ≤ 7V , TJ=25℃ unless otherwise specified The ● denotes specifications which apply over the specified operating temperature range. Parameter Reference voltage Symbol 3 VREF Output Voltage Line Regulation VO 1,2 Load Regulation ∆VO 1,2 ∆VO Dropout Voltage VD Current Limit Adjust Pin Current Conditions 1.5V (VIN-VOUT ) 5.75V 10mA IOUT 1A 10mA IOUT 1A Adjust Pin Current Change 1.225 (-2%) Ratings Typ Max 1.25 1.275 (2%) AV1117-2.5, 4V VIN 7V 2.450 2.5 2.550 AV1117-2.85, 4.35V VIN 7V 2.793 2.85 2.907 Minimum Load Current Quiescent Current Supply Voltage Rejection ∆IAdj SVR Thermal Regulation 3.234 3.3 3.366 5.0 5.100 0.005 0.2 % - 0.05 0.5 % - 1.1 1.2 V 1.1 1.5 (VOUT +1.5V) VIN 7V IOUT =10mA (VIN - VOUT )=2V 10mA IOUT 1A ∆VREF=1%, IOUT =1A ∆VO Long-Term Stability ∆VO RMS Output Noise (% of VOUT) Thermal Resistance, Junction to Case 1.5V (VIN-VOUT ) 5.75V 10mA IOUT 1A 120 µA 0.2 5 µA EN 10 mA 4 f=120Hz, COUT =22µF Tantalum (VIN-VOUT )=3V, IOUT =1A A 35 VIN = VOUT + 1.25V TA=25 Temperature Stability V 4.900 IO(MIN) 1.5V (VIN-VOUT ) 5.75V ID V AV1117-5, 6.5V VIN 7V IAdj 3 Units AV1117-3.3, 4.8V VIN 7V (VIN - VOUT )=2V 3 Min 60 72 0.004 , 30ms pulse 13 dB 0.02 0.5 TA=125 TA=25 0.03 , 1000hrs , 10Hz f %/W % 1.0 0.003 10kHz mA 15 % % /W Note : 1. See thermal regulation specifications for changes in output voltage due to heating effects. Load and line 2. Line and load regulation are guaranteed up to the maximum power dissipation. (18W). Power dissipation is determined by input/output differential and the output current. Guaranteed maximum output power will not be available over the full input/output voltage range. 3. AV1117 only. Copyright © Avic Electronics Corp. 3 Website: http://www.avictek.com @vic AV1117 Electrical Characteristics Curves Copyright © Avic Electronics Corp. 4 Website: http://www.avictek.com @vic Copyright © Avic Electronics Corp. AV1117 5 Website: http://www.avictek.com