Analog Microelectronics, Inc. 1A Low Dropout Positive Voltage Regulator AME1117 nGeneral Descriptions nKey Features The AME1117 is a 1A low-dropout positive voltage regulator. It is available in fixed and adjustable output voltage versions. Overcurrent and thermal protection are integrated onto the chip. Output current will limit as while it reaches the pre-set current or temperature limit. The dropout voltage is specified at 1.4V Maximum at full rated output current. The AME1117 series provides excellent regulation over line, load and temperature variations. l Low dropout voltage ..............1.2V at 1A l Adjustable or fixed voltages 2.5V, 3.3V, 5.0V l Typical line regulation ....... 0.2% l Typical load regulation ...... 0.15% l Adjust pin current less than 90µA l Overcurrent protection l Thermal protection l Available in TO-220, TO-252, SOT-223 nApplications l High Efficiency Linear Regulators l 5V to 3.3V Voltage Converter l Battery Charger l Post Regulators for Switching Supplies nFunctional Block Diagram n Typical Application In p u t AM E1117 GND C u rre n t L im itin g A m p lifie r 4.75V to 12V 10µF Tan Load O u tp u t T h e rm a l P ro te ctio n E rro r Am p. 10µF Tan Bandgap R e fe re n c e Figure 1 A D J/C O M Input range depends on VOUT Please refer to electrical characteristics. Figure 2 1 Analog Microelectronics, Inc. 1A Low Dropout Positive Voltage Regulator AME1117 n Pin Configuration AME 1117 AME1117 1 3 2 A D J / G N D V OUT ADJ/GND V OUT V IN TO-220 Front View AME 1117 1 2 V IN 3 SOT-223 Front View AME1117 1 2 3 VOUT ADJ/GND V OUT V IN TO-252 ( DPAK-2) Front View 2 ADJ/GND VIN TO-252 ( DPAK-2) Front View Analog Microelectronics, Inc. 1A Low Dropout Positive Voltage Regulator AME1117 n Ordering Information Part Number Marking Output Voltage Package AME1117ACGT ABEyww ADJ AME1117BCGT AKEyww 2.5 AME1117CCGT ABFyww 3.3 AKFyww 5.0 AME1117DCGT AME1117ACCT AME1117BCCT AME1117CCCT AME1117DCCT AME1117ACBT AME1117BCBT AME1117CCBT AME1117DCBT AME1117 ACCT yyww AME1117 BCCT yyww AME1117 CCCT yyww AME1117 DCCT yyww AME1117 ACBT yyww AME1117 BCBT yyww AME1117 CCBT yyww AME1117 DCBT yyww SOT-223 ADJ 2.5 TO-252 (DPAK-2) 3.3 5.0 ADJ 2.5 TO-220 3.3 5.0 3 Analog Microelectronics, Inc. 1A Low Dropout Positive Voltage Regulator AME1117 n Absolute Maximum Ratings Parameter Input Voltage Symbol Maximum Unit VIN 7 V TO-220 Thermal Resistance (Junction to Case) 2.5 θJC TO-252 Thermal Resistance (Junction to Ambient) 5 SOT-223 15 TO-220 50 θJA TO-252 o C/W 90 SOT-223 160 Operating Junction Temperature Range TJ 0 to 125 Storage Temperature Range TSTG -65 to 150 Lead Temperature (10 sec) TLEAD 260 o C n Electrical Characteristics AME1117AXXX Parameter Test conditions Symbol Min. Typ. Max. Unit o Reference voltage V REF Line regulation * RegLINE Load regulation RegLOAD V IN = 5V, IO = 10mA V IN = 4.75~7V, IO = 10mA V IN = 5V, IO = 10mA~1A TJ = 25 C 1.238 1.250 1.262 Over Temp. 1.225 1.250 1.275 TJ = 25oC - - 0.2 TJ = 25oC Over Temp. - 0.05 0.3 o 0.2 0.4 1.2 1.4 % Dropout voltage VD IO = 10mA~1A, ∆ Vo = ±1% TJ = 25 C Over Temp. - 1.3 - Current limit IS V IN = 2.75~7V Over Temp. 1.0 - - A Temp. coefficient TC V IN = 2.75~7V, IO = 10mA~1A - 0.005 - %/”C - 55 - Adjust pin current Adjust pin current change Temperature stability 4 - V IADJ ∆ IADJ V IN TJ = 25oC = 2.75~7V, IO = 10mA~1A Over Temp. - 90 V µA V IN = 2.75~7V, IO = 10mA~1A, Over Temp. - 0.2 5 TS V IN = 5V, IO = 100mA, Over Temp. - 0.5 Minimum load current IO V IN = 5V - 5 10 mA RMS output noise VN TJ = 25oC - 0.003 - Ripple rejection ratio RA V IN = 5V, IO = 1A, Over Temp. 60 72 - %V O dB % Analog Microelectronics, Inc. 1A Low Dropout Positive Voltage Regulator AME1117 AME1117BXXX Parameter Test conditions Symbol Min. Typ. Max. 2.475 TJ = 25 C Over Temp. 2.450 2.500 2.525 2.500 2.550 o Output voltage VO Line regulation RegLINE Load regulation RegLOAD V IN = 5V, IO = 0A V IN = 4.75~7V, IO = 0A V IN = 5V, IO = 0A~1A Unit V TJ = 25oC - - 0.2 TJ = 25oC Over Temp. - 0.05 0.3 - 0.2 0.4 TJ = 25 C - 1.2 1.4 Over Temp. - 1.3 - 1.0 - - A o % VD IO = 0A~1A, ∆ Vo = ±1% Current limit IS V IN = 4.75~7V, Over Temp. Quiescent Current IQ V IN = 5V, IO = 0A~1A, Over Temp. - 6 13 mA Temp. Coefficient TC V IN = 4.75~7V, IO = 0A~1A - 0.005 - %/”C Temperature stability TS V IN = 5V, IO = 100mA, Over Temp. - 0.5 - % RMS output noise VN TJ = 25oC - 0.003 - %V O Ripple rejection ratio RA V IN = 5V, IO = 1A, Over Temp. 60 72 - dB Min. Typ. Max. Unit 3.270 TJ = 25 C Over Temp. 3.234 3.300 3.330 3.300 3.366 - - 0.2 - 0.05 0.3 - 0.2 0.4 TJ = 25 C - 1.2 1.4 Over Temp. - 1.3 - 1.0 - - A Dropout voltage V AME1117CXXX Parameter Test conditions Symbol o Output voltage VO Line regulation RegLINE V IN = 5V, IO = 0A V IN = 4.75~7V, IO = 0A TJ = 25oC o Load regulation RegLOAD V IN = 5V, IO = 0A~1A TJ = 25 C Over Temp. o V % VD IO = 0A~1A, ∆ Vo = ±1% Current limit IS V IN = 4.75~7V, Over Temp. Quiescent Current IQ V IN = 5V, IO = 0A~1A, Over Temp. - 6 13 mA Temp. coefficient TC V IN = 4.75~7V, IO = 0A~1A - 0.005 - %/”C Temperature stability TS V IN = 5V, IO = 100mA, Over Temp. - 0.5 - % - 0.003 - %V O 60 72 - dB Dropout voltage o RMS output noise VN TJ = 25 C Ripple rejection ratio RA V IN = 5V, IO = 1A, Over Temp. *Line regulation test circuit V 5 Analog Microelectronics, Inc. 1A Low Dropout Positive Voltage Regulator AME1117 AME1117DXXX Parament Test conditions Symbol Min. Typ. Max. V IN = 7V, IO = 0A 4.950 TJ = 25 C Over Temp. 4.900 5.000 5.050 5.000 5.100 V IN = 7~9V, IO = 0A TJ = 25oC Over Temp. - - 0.3 - - 0.4 - 0.05 0.3 - 0.2 0.4 TJ = 25 C - 1.2 1.4 Over Temp. - 1.3 - 1.0 - - A o Output voltage VO Line regulation RegLINE o Load regulation RegLOAD TJ = 25 C Over Temp. V IN = 7V, IO = 0A~1A o V % VD IO = 0A~1A, ∆ Vo = ±1% Current limit IS V IN = 7~10V, Over Temp. Quiescent Current IQ V IN = 7V, IO = 0A~1A, Over Temp. - 6 13 mA Temp. coefficient TC V IN = 7~10V, IO = 0A~1A - 0.005 - %/”C Temperature stability TS V IN = 7V, IO = 100mA, Over Temp. - 0.5 - % - 0.003 - %VO 60 72 - dB Dropout voltage o RMS output noise VN TJ = 25 C Ripple rejection ratio RA V IN = 7V, IO = 1A, Over Temp. V IN IN 10 µ Tan V V OUT OUT ADJ 100 164 Figure 3 6 Unit 10 µ Tan Analog Microelectronics, Inc. 1A Low Dropout Positive Voltage Regulator AME1117 n Performance Characteristics 1. Load Regulation 3. Temperature Stablilty 1.252 Reference Voltage (V) Output Voltage deviation (% 0.00 -0.05 -0.10 -0.15 -0.20 1.250 1.248 1.246 1.244 1.242 1.240 1.238 -0.25 -50 -30 -10 10 30 50 70 -50 90 ” 0 25 50 75 100 125 ” Temperature ( C) Temperature ( C) 2. Short Circuit Current 4. Dropout Voltage 1.25 3.0 1.20 2.5 Drop-out Voltage (V) Output Short Circuit Current (A) -25 2.0 1.5 1.0 0.5 1.15 1.10 1.05 1.00 0.95 0.0 1 2 3 4 5 6 7 8 9 10 0.90 0 Input/Output Differential Voltage(V) 0.2 0.4 0.6 0.8 1 Load Current (A) 7 Analog Microelectronics, Inc. 1A Low Dropout Positive Voltage Regulator AME1117 5. Adjust Pin Current 7. Load Transient Response 45 Adjust Pin Current (µA) 40 35 30 25 20 15 10 5 0 -50 -25 0 25 50 75 100 125 ” Temperature( C) Minimum Operation Current (mA 6. Minimum Operating Current 8. Line Transient Response 7 6 5 4 3 2 1 0 Time (µS) 0 1 2 3 4 5 6 7 8 Input/Output Differential Voltage(V) 8 9 Analog Microelectronics, Inc. 1A Low Dropout Positive Voltage Regulator AME1117 n Application Descriptions 1. Output voltage adjustment Like most regulators, the AME1117 regulates the output by comparing the output voltage to an internally generated reference voltage. On the adjustable version, the VREF is available externally as 1.25V between VOUT and ADJ. The voltage ratio formed by R1 and R2 should be set to conduct 10mA (minimum output load). The output voltage is given by the following equation: V O U T = V R EF (1+ R2 ) + I AD J x R2 R1 On fixed versions of AME1117, the voltage divider is provided internally. V IN IN VOUT OUT ADJ C1 V REF R1 IA D J 50 µA R2 V O U T = V R E F (1+ R2 ) + I A D J x R2 R1 Figure 4 2. Thermal protection AME1117 has thermal protection which limits junction temperature to 150OC. However, device functionality is only guaranteed to a maximum junction temperature of +125OC. The power dissipation and junction temperature for AME1117 in DPAK package are given by 3. Current Limit Protection AME1117 is protected against overload conditions. Current protection is triggered at typically 1.5A. 4. Stability and Load Regulation AME1117 requires a capacitor from VOUT to GND to provide compensation feedback to the internal gain stage. This is to ensure stability at the output terminal. Typically, a 10µF tantalum or 50µF aluminum electrolytic is sufficient. Note: It is important that the ESR for this capacitor does not exceed 0.5Ω. The output capacitor does not have a theoretical upper limit and increasing its value will increase stability. COUT = 100µF or more is typical for high current regulator design. For the adjustable version, the best load regulation is accomplished when the top of the resistor divider (R1) is connected directly to the output pin of the AME1117. When so connected, RP is not multiplied by the divider ratio. For fixed output versions, the top of R1 is internally connected to the output. The ground pin can be connected to the low side of the load in order to eliminate ground loop errors. RP Parasitic Line Resistance V IN IN OUT ADJ R1 (Connect R1 to case) PD = (VIN - VOUT) x IOUT TJUNCTION = TAMBIENT + ( PD x θJA) RL R2 Note: TJUNCTION must not exceed 125OC Connect R2 to load Figure 5 9 Analog Microelectronics, Inc. AME1117 5. Thermal Consideration The AME1117 series contain thermal limiting circuitry designed to protect itself from over-temperature conditions. Even for normal load conditions, maximum junction temperature ratings must not be exceeded. As mentioned in thermal protection section, we need to consider all sources of thermal resistance between junction and ambient. It includes junction-to-case, case-to-heat-sink interface and heat sink thermal resistance itself. Junction-to-case thermal resistance is specified from the IC junction to the bottom of the case directly below the die. Proper mounting is required to ensure the best possible thermal flow from this area of the package to the heat sink. The case of all devices in this product series is electrically connected to the output. Therefore, if the case of the device must be electrically isolated, a thermally conductive spacer is recommended. 10 1A Low Dropout Positive Voltage Regulator Analog Microelectronics, Inc. 1A Low Dropout Positive Voltage Regulator AME1117 n Advanced Applications Adjustable Output Voltage V IN = 5V * V O = 1.5 ~ 3.45V AME1117 V OUT V IN ADJ 10µF 10µF R1 1K R2 ** 2K 10 µF * V O = Vref (1 + R2/R1) + Iadj X R2 ** Optional for improved ripple rejection Paralleling Regulators V IN V IN AME1117 V O U T * 20mΩ VO I O = 0 to 2A GND 10µF 10µF V IN AME1117 V O U T GND * 20mΩ * 20mΩ is ballast resistance The inter-connection of #18 wire could act as ballast resistance. 11 Analog Microelectronics, Inc. 1A Low Dropout Positive Voltage Regulator AME1117 Regulator with Reference V IN V IN AME1117 V OUT * VO ADJ 10µF 1K ** 10 µF Zener Diode or Voltage Reference 10µF * V O = Vref + V Z (V Z is breakdown voltage of Zener Diode) ** Optional for improved ripple rejection Regulator with Reverse Diode Protection V IN 10µF 12 V IN AME1117 V O U T GND * VO 100µF Analog Microelectronics, Inc. 1A Low Dropout Positive Voltage Regulator AME1117 n Package Dimension TO-220 SYMBOLS A b C1 D E e e1 e3 f H1 K CP Q L a b1 R MILLIMETERS MIN MAX 4.06 4.83 0.63 1.02 0.35 0.60 14.22 14.99 9.66 10.54 2.79 4.83 5.33 1.14 1.40 1.14 1.40 5.94 6.55 2.29 2.92 3.71 3.96 2.62 2.87 12.70 14.27 3D 7D 1.14 1.52 6.17 REF. INCHES MIN MAX 0.160 0.190 0.025 0.040 0.0138 0.0236 0.056 0.590 0.385 0.415 0.110 0.190 0.210 0.045 0.055 0.045 0.055 0.234 0.258 0.090 0.115 0.146 0.156 0.103 0.113 0.500 0.5618 3D 7D 0.0449 0.06 0.243 REF. Notes : 1. Dimension C1 apply for tin plate finish. 2. For solder dip lead finish dimension C1 should be 0.015"-0.027" (0.38-0.69) SOT-223 SYMBOLS α A A1 B B1 C D E e e1 H L L1 L2 a MILLIMETERS MIN MAX 1.50 1.80 0.02 0.10 0.60 0.838 2.895 3.15 0.24 0.381 6.299 6.706 3.30 3.708 2.30 BSC 4.60 BSC 6.70 7.30 0.91 MIN 2.00 MAX 0.06 BSC 10? 0? INCHES MIN MAX 0.0591 0.0709 0.0008 0.0039 0.0236 0.033 0.1140 0.1240 0.0094 0.0150 0.2480 0.2640 0.1299 0.1460 0.090 BSC 0.181 BSC 0.2638 0.2874 0.0360 MIN 0.0787 MAX 0.0024 BSC 0? 10? 13 Analog Microelectronics, Inc. 1A Low Dropout Positive Voltage Regulator AME1117 n Package Dimension TO-252 (DPAK) SYMBOLS A B C D E F G H I J K L MILLIMETERS MIN MAX 0.45 0.58 1.60 1.95 0.51 0.45 0.60 6.40 6.80 5.40 5.80 2.20 2.85 * 2.30 0.90 0.97 5.20 5.50 0.89 2.03 INCHES MIN MAX 0.0177 0.023 0.06 0.0768 0.02 0.0177 0.0236 0.252 0.2677 0.2126 0.2283 0.0866 0.1122 * 0.0906 0.0354 0.038 0.20 0.22 0.035 0.08 * : Typical value NOTES : 1. CONTROLLING DIMENSION : MILLIMETERS. 2. MAXIMUM LEAD THICKNESS INCLUDES LEAD FINISH THICKNESS MINIMUM LEAD THICKNESS IS THE MINIMUM THICKNESS OF BASE MATERIAL. TO-252 (DPAK) SYMBOLS A B C D E F G H I J K L MILLIMETERS MIN MAX 0.45 0.58 1.60 1.95 0.51 0.45 0.60 6.40 6.80 5.40 5.80 2.20 2.85 * 2.30 0.90 0.97 5.20 5.50 0.89 2.03 INCHES MIN MAX 0.0177 0.023 0.06 0.0768 0.02 0.0177 0.0236 0.252 0.2677 0.2126 0.2283 0.0866 0.1122 * 0.0906 0.0354 0.038 0.20 0.22 0.035 0.08 * : Typical value NOTES : 1. CONTROLLING DIMENSION : MILLIMETERS. 2. MAXIMUM LEAD THICKNESS INCLUDES LEAD FINISH THICKNESS MINIMUM LEAD THICKNESS IS THE MINIMUM THICKNESS OF BASE MATERIAL. 14 www.analogmicro.com E-Mail: [email protected] Life Support Policy: These products of Analog Microelectronics, Inc. are not authorized for use as critical components in lifesupport devices or systems, without the express written approval of the president of Analog Microelectronics, Inc. Analog Microelectronics, Inc. reserves the right to make changes in the circuitry and specifications of its devices and advises its customers to obtain the latest version of relevant information. Analog Microelectronics, Inc. , December, 2001 Document: 1014-DS1117-C Corporate Headquarters Asia Pacific Headquarters Analog Microelectronics, Inc. AME, Inc. 3100 De La Cruz Blvd. Suite 201 Santa Clara, CA. 95054-2046 2F, 187 Kang-Chien Road, Nei-Hu Dist., Taipei 114 Taiwan, R.O.C. Tel : (408) 988-2388 Fax: (408) 988-2489 Tel : 886 2 2627-8687 Fax : 886 2 2659-2989