1A Adjustable/Fixed Low Dropout Linear Regulator

1 AMS1117. 1A Adjustable/Fixed Low Dropout Linear Regulator General Description Key Features The AMS1117-ADJ and , , , , , - Low Dropout voltage and-5 are low Dropout three-terminal regulators with - Load regulation: typical 1A output current capability. These devices have been - Optimized for Low Voltage optimized for low voltage where transient response and - On-chip thermal limiting minimum input voltage are critical. The version is - Standard SOT-223 and TO-252 packages designed specifically to be used in Active Terminators for - Three-terminal adjustable or fixed low Dropout SCSI bus. , , , , , , 5V. regulators On-chip thermal limiting provides protection against any combination of overload and ambient temperatures that Applications would create excessive junction temperatures.

2 - Active SCSI terminators - High efficiency Linear regulators Unlike PNP type regulators where up to 10% of the output - Post regulators for switching supplies current is wasted as quiescent current , the quiescent cur- rent of the AMS1117 flows into the load, increasing effi- - Battery chargers ciency. - 12V to 5V Linear regulators -Motherboard clock supplies The AMS1117 series regulators are available in the indus- try-standard SOT-223 and TO-252 power packages. Typical Application Figure 1. Typical Applications of AMS1117. Notice: The distance between Vout pin and Capacitor should not exceed 4cm for excellent performance Advanced Monolithic Systems 1. AMS1117. 1A Adjustable/Fixed Low Dropout Linear Regulator Pin Assignments Figure 2. Pin Assignments of AMS1117.

3 *With package soldered to square inch copper area over backside ground plane or internal power plane, JA can vary from 30 C/W to more than 50 C/W. Other mounting techniques may provide better thermal resistance than 30 C/W. Absolute Maximum Ratings Parameter Min. Max. Unit VIN 18 V. (VIN VOUT) * IOUT See Figure 3. Operating Junction Temperature Range -20 125 C. Storage Temperature Range -65 150 C. Lead Temperature (Soldering, 10 sec.) 300. C. Advanced Monolithic Systems 2. AMS1117. 1A Adjustable/Fixed Low Dropout Linear Regulator Block Diagram VIN. Thermal Limit current Limit VOUT. Substrate GND ( fixed output). ADJ. ( adjustable output). Figure 3. Block Diagram of AMS1117. Electrical Characteristic Typicals and limits appearing in normal type apply for TJ=25.

4 Limits appearing in Boldface type apply over the entire junction temperature for operation, -20 to 125 . Min Typ Max Symbol Parameter Conditions Units (Note 2) (Note 1) (Note 2). Reference AMS1117. VREF V. Voltage <=(VIN-VOUT)<=7V,10mA<=IOUT<=1A. IOUT = 10mA, VIN = V. , <= VIN<= , <= VIN<= V. , <= VIN<= V. 10mA<=. VOUT Output Voltage ,4V<= VIN<= V. IOUT<=1A. , <= VIN<= V. , <= VIN <= V. , <=VIN <= 12V V. Advanced Monolithic Systems 3. AMS1117. 1A Adjustable/Fixed Low Dropout Linear Regulator Electrical Characteristic (Continued). Typicals and limits appearing in normal type apply for TJ=25 .Limits appearing in Boldface type apply over the entire junction temperature for operation, -20 to 125 . Min Typ Max Symbol Parameter Conditions Units (Note 2) (Note 1) (Note 2).

5 Line Regultion IOUT=10mA ,(VOUT+ )<=VIN<=12V %. (Note 3). VOUT VIN-VOUT=2V,10mA<= IOUT<=1A, %. Load Regultion (Note 3) 1 %. VIN-VOUT=2V,10mA<= IOUT<=1A, VIN-VOUT Dropout Volage IOUT=1A, VREF=1% V. current Limit VIN-VOUT= 2V, TJ=25 A. Minimum Load AMS1117-ADJ. 10 mA. current (Note 4) <=(VIN-VOUT)<=10V. quiescent Curent VIN=VOUT+ 5 13 mA. Thermal TA = 25 C, 30ms pulse %/W. Regulation Ripple f=120Hz,VIN-VOUT=3V, VRipple=1 VPP 60 72 dB. ILimit Rejection Adjust Pin current 50 120 A. Adjust Pin current <=VIN-VOUT<=7V, 10mA<=IOUT<=1A 5 A. Change Temperature %. Stability Long Term TA = 125 C, 1000hrs. %. Stability Advanced Monolithic Systems 4. AMS1117. 1A Adjustable/Fixed Low Dropout Linear Regulator Electrical Characteristic (Continued). Typicals and limits appearing in normal type apply for TJ=25.

6 Limits appearing in Boldface type apply over the entire junction temperature for operation, -20 to 125 . Min Typ Max Symbol Parameter Conditions Units (Note 2) (Note 1) (Note 2). RMS Output Noise(% of TA = 25 C, 10Hz<= f <=10kHz %. VOUT). Thermal Resistance, Junction SOT-223 15 /W. ILimit to Case TO-252 3 /W. Thermal Shutdown Junction Temperature 155 . Thermal Shutdown Hysteresis 25 . Note 1: Typical Values represent the most likely parametric norm. Note 2: All limits are guaranteed by testing or statistical analysis. Note 3: Load and line regulation are measured at constant junction room temperature. Note 4: The minimum output current required to maintain regulation. Typical Performance Characteristics Dropout Voltage ( V ). 0. 0 Output current ( A ).

7 Figure 4. Dropout Voltage VS. Output current 5. AMS1117. 1A Adjustable/Fixed Low Dropout Linear Regulator Typical Performance Characteristics (Continued). ReferenceVoltage( V ). Output Voltage( V ). -75 50 25 0 25 50 75 100 125 150 175 -75 50 25 0 25 50 75 100 125 150 175. Junction Temperature ( ) Junction Temperature ( ). Figure 5. Reference Voltage VS. Temperature Figure 6. Output Voltage VS. Temperature 5 100. Note: 90 AMS1117 Only Minimum Load current ( mA ). 4 80. ADJ Pin current ( A ). 70. 3 60. 50. 2 40. 30. 1 20. 10. 0 0. -75 50 25 0 25 50 75 100 125 150 175 -75 50 25 0 25 50 75 100 125 150 175. Junction Temperature ( ). Junction Temperature ( ). Figure 7. Minimum Load current VS. Temperature Figure 8. ADJ Pin current VS. Temperature Advanced Monolithic Systems 6.

8 AMS1117. 1A Adjustable/Fixed Low Dropout Linear Regulator Mechanical Dimensions 4-Lead SOT-223 Package Inches Millimeters Symbol Notes Min. Max. Min. Max. A .071 A1 .181 B .025 .033 .064 .840. c D .248 .264 E .130 .148 e .115 .124 F .033 .041 .840 H .264 .287 I .0121 .310 . J 10 10 . K 10 16 10 16 . L .0008 .0040 .0203 .1018. M 10 16 10 16 . N .010 .014 .250 .360. Figure 9. 4-Lead SOT-223 Package Advanced Monolithic Systems 7. AMS1117. 1A Adjustable/Fixed Low Dropout Linear Regulator Mechanical Dimensions (Continued). 3-Lead TO-252 Package Notes: Inches Millimeters 1. Dimensions are exclusive of mold flash, metal burrs Symbol Notes or interlead protrusion. Min. Max. Min. Max. 2. Stand off-height is measured from lead tip with ref. to A .086.

9 094 Datum B-. 3. Foot length is measured with ref. to Datum A with b .025 .035 lead surface. b2 .030 .045 4. Thermal pad contour optional within dimension b3. b3 .205 .215 4 and L3. 5. Formed leads to be planar with respect to one another c .018 .024 at seating place C-. c2 .018 .023 6. Dimensions and tolerances. D .210 .245 1. E .250 .265 1. e .090 BSC BSC. H .370 .410 L .055 .070 3. L1 .108 REF REF. L3 .035 .080 4. L4 .025 .040 Figure 10. 3-Lead TO-252 Package Advanced Monolithic Systems 8. AMS1117. 1A Adjustable/Fixed Low Dropout Linear Regulator Ordering Information Package Temperature Range Part Number Output Voltage Packing Marking Transport Media - +125 AMS1117 Tape and Reel - +125 AMS1117 Tape and Reel -20 - +125 AMS1117 Tape and Reel -20 - +125 AMS1117 Tape and Reel SOT 223.

10 -20 - +125 AMS1117 Tape and Reel -20 - +125 AMS1117 Tape and Reel -20 - +125 AMS1117-5 5V AMS1117 5 Tape and Reel -20 - +125 AMS1117 Adjust AMS1117 Tape and Reel -20 - +125 AMS1117 Tape and Reel -20 - +125 AMS1117 Tape and Reel -20 - +125 AMS1117 Tape and Reel -20 - +125 AMS1117 Tape and Reel TO 252. -20 - +125 AMS1117 Tape and Reel -20 - +125 AMS1117 Tape and Reel -20 - +125 AMS1117-5 AMS1117 5 Tape and Reel -20 - +125 AMS1117CD Adjust AMS1117CD Tape and Reel Advanced Monolithic Systems Disclaimer: AMS reserves the right to make changes to the information herein for the improvement of the design and performance without further notice! Customers should obtain the latest relevant information before placing orders and should verify that such information is complete and current .