AT1117 Preliminary Product Information 1A Low Dropout Fast Response Positive Adjustable Regulator Features General Description • Guaranted Output Voltage Accuracy within 2% • Fast Transient Response • Guaranteed Dropout Voltage at Multiple Currrents • Load Regulation : 0.1% Typ. • Line Regulation : 0.03% Typ. • Low Dropout Voltage : 1.1V Typ. at I =1A • Trimmed Current Limit : 1A Typ. at Tj=125℃ • On-Chip Thermal Limiting : 150℃ Typ. • Adjustable Output : 1.25~7.75V • Standard 3-pin TO-252 , SOT-223 Power Packages The AT1117 is a low dropout three-terminal adjustable regulators with 1A output current capability. In order to obtain lower dropout voltage and faster transient response, which is critical for low voltage applications, the AT1117 has been optimized. The device is available in an adjustable version and fixed output voltages of 1.8V, 2.5V, 2.85V, 3.3V and 5V, the output available voltage range is from 1.25~7.75V with an input supply below 9V. Dropout voltage is guaranteed at a maximum of 1.2V at 1A.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 that would create excessive junction temperatures. The AT1117 is available in the industry standard 3-pin TO-252 the low profile surface mount SOT-223 power packages which can be used in applications where space is limited. Applications • Active SCSI Terminators • Low Voltage Logic Supplies • Battery-Powered Circuitry • Post Regulator for Switching Power Supply Block Diagram 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: [email protected] 1 AT1117 Preliminary Product Information 1A Low Dropout Fast Response Positive Adjustable Regulator Pin Configuration Front View for SOT-223 Front View for TO-252 AT1117 Ordering Information Part number Package AT1117- V SOT-223 AT1117- Y TO-252 Marking AT1117V ××××××∆∆ AT1117Y ∆∆ ×××××× :Output Voltage 18:1.8V 25:2.5V 28:2.85V 33:3.3V 50:5.0V ××××××:Date Code ∆∆: Output Voltage Pin Description Pin No. Symbol I/O 1 2 3 ADJ/GND OUT IN -O I Description Adjust Pin / Ground pin Regulated voltage output pin Supply voltage input pin 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: [email protected] 2 AT1117 Preliminary Product Information 1A Low Dropout Fast Response Positive Adjustable Regulator Absolute Maximum Ratings (TJ=+250C) Parameter Symbol Limits Input voltage Operating junction temperature range Control section Power transistor Storage temperature Lead Temperature （ soldering, 10 second） VIN TJ 13.2 V 0 to 125 0 to 150 -65 to +150 260 ℃ ℃ ℃ TSTG TL Unit ℃ Electrical Characteristics (TJ=+250C) Parameter Reference Voltage Part number Symbol AT1117 VREF AT1117-18 AT1117-25 Output Voltage AT1117-28 VOUT AT1117-33 AT1117-50 AT1117 AT1117-18 Line Regulation AT1117-25 REGLINE AT1117-28 AT1117-33 AT1117-50 Load Regulation AT1117 AT1117-18 REGLOAD Condition 10mA≤IOUT≤1A, 1.5V≤ (VIN-VOUT) ≤10.75V 0A ≤IOUT≤1A, 3.3V≤VIN≤12V 0A ≤IOUT≤1A, 4.0V≤VIN≤12V 0A ≤IOUT≤1A, 4.35V≤VIN≤12V 0A ≤IOUT≤1A, 4.75V≤VIN≤12V 0A≤IOUT≤1A, 6.5V≤VIN≤12V IOUT=10mA, 1.5V≤ (VIN-VOUT) ≤10.75V (Note1) IOUT=0A, 3.3V≤VIN≤12V (Note 1) IOUT=0A, 4.0V≤VIN≤12V (Note 1) IOUT=0A, 4.35V≤VIN≤12V (Note 1) IOUT=0A, 4.75V≤VIN≤12V (Note 1) IOUT=0A, 6.5V≤VIN≤12V (Note 1) (VIN-VOUT)=3V, 10mA ≤IOUT≤1A (Note 1) VIN=3.3V, 0A ≤IOUT≤1A (Note 1) Values Unit Min. Typ. Max. 1.225 1.250 1.275 V 1.764 1.800 1.836 V 2.450 2.500 2.550 V 2.790 2.850 2.910 V 3.235 3.300 3.365 V 5.100 5.000 4.900 V 0.03 0.2 % 1 6 mV 1 6 mV 1 6 mV 1 6 mV 1 10 mV 0.1 0.4 % 1 10 mV 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: [email protected] 3 AT1117 Preliminary Product Information 1A Low Dropout Fast Response Positive Adjustable Regulator AT1117-25 AT1117-28 AT1117-33 AT1117-50 Dropout Voltage VD Current Limit Adjust Pin Current ILIMIT IADJ Adjust Pin Current ∆IADJ Minimun Load Current Io Ripple Rejection PSRR Thermal Rejection Temperature Stability Long Term Stability TR TS LS RMS Output Noise VN θJC Thermal Resistance Quiescent Current AT1117-18 AT1117-25 AT1117-28 AT1117-33 AT1117-50 IIN VIN=4.0V, 0A ≤IOUT≤1A 1 (Note 1) VIN=4.35V, 0A ≤IOUT≤1A 1 (Note 1) VIN=4.75V, 0A ≤IOUT≤1A 1 (Note 1) VIN=6.5V, 0A ≤IOUT≤1A 1 (Note 1) IOUT=100mA (Note 2) 1 IOUT=500mA (Note 2) 1.05 IOUT=1A (Note 2) 1.1 (VIN-VOUT)=5V 1000 (VIN-VOUT)=3V, IOUT=10mA 60 0A≤IOUT≤1A, 0.2 1.5V≤ (VIN-VOUT) ≤12V (VIN-VOUT)=12V (Note 1) 1.7 FRIPPLE=120HZ, VRIPPLE=1VP-P, 60 75 (VIN-VOUT)=3V TJ=25℃, 30ms Pulse 0.01 0.5 TJ=125℃, 1000Hrs 0.3 TJ=25℃, 10Hz≤F≤10KHz, (% of VOUT) (Junction-to-Case, at Tab) VIN≤12V VIN≤12V VIN≤12V VIN≤12V VIN≤12V 10 mV 10 mV 10 mV 15 mV 1.1 1.2 1.3 120 V V V mA µA 5 µA mA dB 0.1 %/W % % 0.003 15 5 5 5 5 5 % 10 10 10 10 10 ℃/W mA mA mA mA mA Note 1: See thermal regulation specifications for changes in output voltage due to heating effects. Load line regulations are measured at a constant junction temperature by low duty cycle pulse testing. Note 2: Dropout voltage is specified over the full output current range of the device. Dropout voltage is defined as the minimum input/output differential measured at the specified output current. Test points and limits are also shown on the Dropout Voltage curve. Note 3: Minimum load current is defined as the minimum output current required to maintain regulation. 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: [email protected] 4 AT1117 Preliminary Product Information 1A Low Dropout Fast Response Positive Adjustable Regulator Typical Application Circuit 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: [email protected] 5 AT1117 Preliminary Product Information 1A Low Dropout Fast Response Positive Adjustable Regulator Timing Curve Load Transient Responce Dropout Voltage vs Output Current 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: [email protected] 6 AT1117 Preliminary Product Information 1A Low Dropout Fast Response Positive Adjustable Regulator Output Voltage vs Input Voltage Input Current vs Input Voltage 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: [email protected] 7 AT1117 Preliminary Product Information 1A Low Dropout Fast Response Positive Adjustable Regulator Input Current vs Temperature 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: [email protected] 8 AT1117 Preliminary Product Information 1A Low Dropout Fast Response Positive Adjustable Regulator Small Outline SYMBOL A A1 B B1 c D E e e1 H L K α β 3-pin Plastic SOT-223 INCHES MIN 0.06 MAX 0.07 0.02 0.11 0.01 0.25 0.13 0.03 0.12 0.01 0.26 0.15 0.09BSC 0.18BSC 0.26 0.04 0.06 0○ 0.29 0.04 0.08 10○ 13○ MILLIMETERS MIN MAX 1.50 1.80 0.02 0.08 0.60 0.80 2.90 3.10 0.28 0.32 6.30 6.70 3.30 3.70 2.3BSC 4.6BSC 6.70 7.30 0.91 1.10 1.50 2.00 0○ 10○ 13○ NOTES - 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: [email protected] 9 AT1117 Preliminary Product Information 1A Low Dropout Fast Response Positive Adjustable Regulator Small Outline SYMBOL A A1 b b2 C C1 D E e1 H L L1 L2 3-pin Plastic TO-252 INCHES MIN 0.086 0.035 0.020 0.205 0.018 0.018 0.210 0.250 0.156 0.370 0.020 0.025 0.035 MAX 0.094 0.050 0.035 0.215 0.023 0.023 0.245 0.265 0.204 0.410 0.040 0.080 MILLIMETERS MIN MAX 2.18 2.39 0.89 1.27 0.508 0.89 5.207 5.461 0.46 0.58 0.46 0.58 5.334 6.22 6.35 6.73 3.96 5.18 9.398 10.41 0.51 0.64 1.02 0.89 2.032 NOTES - 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 WWW: http://www.aimtron.com.tw Fax: 886-3-563-0879 Email: [email protected] 10