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| Analog Microelectronics, Inc. AME1117 1A Low Dropout Positive Voltage Regulator nGeneral Descriptions 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. nKey Features 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 90A 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 In p u t n Typical Application AM E1117 C u rre n t L im itin g A m p lifie r GND 4.75V to 12V 10F Tan 10F Tan Load T h e rm a l P ro te ctio n O u tp u t E rro r Am p. Bandgap R e fe re n c e A D J/C O M Input range depends on VOUT Please refer to electrical characteristics. Figure 1 Figure 2 1 Analog Microelectronics, Inc. AME1117 1A Low Dropout Positive Voltage Regulator n Pin Configuration AME1117 AME 1117 1 2 3 A D J / G N D V OUT V IN ADJ/GND V OUT V IN TO-220 Front View SOT-223 Front View AME 1117 1 2 3 AME1117 1 ADJ/GND 2 VOUT 3 VIN ADJ/GND V OUT V IN TO-252 ( DPAK-2) Front View TO-252 ( DPAK-2) Front View 2 Analog Microelectronics, Inc. AME1117 1A Low Dropout Positive Voltage Regulator n Ordering Information Part Number AME1117ACGT AME1117BCGT AME1117CCGT AME1117DCGT AME1117ACCT Marking Output Voltage Package ABEyww AKEyww ABFyww AKFyww AME1117 ACCT yyww AME1117 BCCT yyww AME1117 CCCT yyww AME1117 DCCT yyww AME1117 ACBT yyww AME1117 BCBT yyww AME1117 CCBT yyww AME1117 DCBT yyww ADJ 2.5 3.3 5.0 ADJ SOT-223 AME1117BCCT 2.5 TO-252 (DPAK-2) 3.3 AME1117CCCT AME1117DCCT 5.0 AME1117ACBT ADJ AME1117BCBT 2.5 TO-220 3.3 AME1117CCBT AME1117DCBT 5.0 3 Analog Microelectronics, Inc. AME1117 1A Low Dropout Positive Voltage Regulator n Absolute Maximum Ratings Parameter Input Voltage TO-220 Thermal Resistance (Junction to Case) TO-252 SOT-223 TO-220 Thermal Resistance (Junction to Ambient) TO-252 SOT-223 Operating Junction Temperature Range Storage Temperature Range Lead Temperature (10 sec) TJ TSTG TLEAD JA JC Symbol VIN Maximum 7 2.5 5 15 50 90 160 0 to 125 -65 to 150 260 o o Unit V C/W C n Electrical Characteristics AME1117AXXX Parameter Reference voltage Line regulation * Load regulation Dropout voltage Current limit Temp. coefficient Adjust pin current Adjust pin current change Temperature stability Minimum load current RMS output noise Ripple rejection ratio Symbol V REF RegLINE RegLOAD VD IS TC IADJ IADJ TS IO VN RA Test conditions o Min. Typ. Max. Unit V V IN = 5V, IO = 10mA V IN = 4.75~7V, IO = 10mA V IN = 5V, IO = 10mA~1A IO = 10mA~1A, Vo = 1% V IN = 2.75~7V V IN = 2.75~7V, IO = 10mA~1A V IN TJ = 25 C 1.238 1.250 1.262 Over Temp. 1.225 1.250 1.275 TJ = 25oC TJ = 25oC Over Temp. TJ = 25 C Over Temp. Over Temp. o 1.0 60 0.05 0.2 1.2 1.3 0.005 55 0.2 0.3 0.4 1.4 90 A V A %/"C % TJ = 25oC = 2.75~7V, IO = 10mA~1A Over Temp. V IN = 2.75~7V, IO = 10mA~1A, Over Temp. V IN = 5V, IO = 100mA, Over Temp. V IN = 5V TJ = 25oC V IN = 5V, IO = 1A, Over Temp. 0.2 0.5 5 0.003 72 5 % 10 mA %V O dB 4 Analog Microelectronics, Inc. AME1117 1A Low Dropout Positive Voltage Regulator AME1117BXXX Parameter Output voltage Line regulation Load regulation Symbol VO RegLINE RegLOAD VD IS IQ TC TS VN RA Test conditions o Min. 2.475 TJ = 25 C Over Temp. 2.450 TJ = 25oC TJ = 25oC Over Temp. TJ = 25 C Over Temp. o Typ. 2.500 2.500 0.05 0.2 1.2 1.3 6 0.005 0.5 0.003 72 Max. 2.525 2.550 0.2 0.3 0.4 1.4 Unit V V IN = 5V, IO = 0A V IN = 4.75~7V, IO = 0A V IN = 5V, IO = 0A~1A IO = 0A~1A, Vo = 1% V IN = 4.75~7V, Over Temp. 1.0 60 % Dropout voltage Current limit Quiescent Current Temp. Coefficient Temperature stability RMS output noise Ripple rejection ratio V 13 A mA %/"C % %V O dB V IN = 5V, IO = 0A~1A, Over Temp. V IN = 4.75~7V, IO = 0A~1A V IN = 5V, IO = 100mA, Over Temp. TJ = 25oC V IN = 5V, IO = 1A, Over Temp. AME1117CXXX Parameter Output voltage Line regulation Load regulation Symbol VO RegLINE RegLOAD Test conditions o Min. 3.270 TJ = 25 C Over Temp. 3.234 TJ = 25oC TJ = 25 C Over Temp. TJ = 25 C Over Temp. o o Typ. 3.300 3.300 0.05 0.2 1.2 1.3 6 0.005 0.5 0.003 72 Max. 3.330 3.366 0.2 0.3 0.4 1.4 Unit V V IN = 5V, IO = 0A V IN = 4.75~7V, IO = 0A V IN = 5V, IO = 0A~1A IO = 0A~1A, Vo = 1% V IN = 4.75~7V, Over Temp. 1.0 60 % Dropout voltage Current limit Quiescent Current Temp. coefficient Temperature stability RMS output noise Ripple rejection ratio VD IS IQ TC TS VN RA V 13 A mA %/"C % %V O dB V IN = 5V, IO = 0A~1A, Over Temp. V IN = 4.75~7V, IO = 0A~1A V IN = 5V, IO = 100mA, Over Temp. TJ = 25 C V IN = 5V, IO = 1A, Over Temp. o *Line regulation test circuit 5 Analog Microelectronics, Inc. AME1117 AME1117DXXX Parament Output voltage Line regulation Load regulation Symbol VO RegLINE RegLOAD VD IS IQ TC TS VN RA Test conditions o 1A Low Dropout Positive Voltage Regulator Min. 4.950 TJ = 25 C Over Temp. 4.900 TJ = 25oC Over Temp. TJ = 25 C Over Temp. TJ = 25 C Over Temp. o o Typ. 5.000 5.000 0.05 0.2 1.2 1.3 6 0.005 0.5 0.003 72 Max. 5.050 5.100 0.3 0.4 0.3 0.4 1.4 Unit V V IN = 7V, IO = 0A V IN = 7~9V, IO = 0A V IN = 7V, IO = 0A~1A IO = 0A~1A, Vo = 1% V IN = 7~10V, Over Temp. 1.0 60 % Dropout voltage Current limit Quiescent Current Temp. coefficient Temperature stability RMS output noise Ripple rejection ratio V 13 A mA %/"C % %VO dB V IN = 7V, IO = 0A~1A, Over Temp. V IN = 7~10V, IO = 0A~1A V IN = 7V, IO = 100mA, Over Temp. TJ = 25 C V IN = 7V, IO = 1A, Over Temp. o V IN IN ADJ OUT 100 V OUT 10 Tan 164 10 Tan Figure 3 6 Analog Microelectronics, Inc. AME1117 1A Low Dropout Positive Voltage Regulator n Performance Characteristics 1. Load Regulation 3. Temperature Stablilty 0.00 1.252 Output Voltage deviation (% Reference Voltage (V) 1.250 1.248 1.246 1.244 1.242 1.240 1.238 -0.05 -0.10 -0.15 -0.20 -0.25 -50 -30 -10 10 30 " 50 70 90 -50 -25 0 25 50 " 75 100 125 Temperature ( C) Temperature ( C) 2. Short Circuit Current 4. Dropout Voltage 1.25 1.20 Output Short Circuit Current (A) 3.0 Drop-out Voltage (V) 1 2 3 4 5 6 7 8 9 10 2.5 2.0 1.5 1.0 0.5 0.0 1.15 1.10 1.05 1.00 0.95 0.90 0 0.2 0.4 0.6 0.8 1 Input/Output Differential Voltage(V) Load Current (A) 7 Analog Microelectronics, Inc. AME1117 1A Low Dropout Positive Voltage Regulator 5. Adjust Pin Current 45 40 7. Load Transient Response Adjust Pin Current ( A) 35 30 25 20 15 10 5 0 -50 -25 0 25 50 " 75 100 125 Temperature( C) 6. Minimum Operating Current 8. Line Transient Response Minimum Operation Current (mA 7 6 5 4 3 2 1 0 0 1 2 3 4 5 6 7 8 9 Time (S) Input/Output Differential Voltage(V) 8 Analog Microelectronics, Inc. AME1117 1A Low Dropout Positive Voltage Regulator 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 = VR EF (1+ R2 ) + IADJ x R2 R1 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 10F tantalum or 50F aluminum electrolytic is sufficient. Note: It is important that the ESR for this capacitor does not exceed 0.5. The output capacitor does not have a theoretical upper limit and increasing its value will increase stability. COUT = 100F 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 ADJ R1 (Connect R1 to case) R2 RL OUT On fixed versions of AME1117, the voltage divider is provided internally. V IN C1 IN ADJ IA D J 50 A OUT V REF R1 VOUT 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 PD = (VIN - VOUT) x IOUT TJUNCTION = TAMBIENT + ( PD x JA) Note: TJUNCTION must not exceed 125OC Connect R2 to load Figure 5 9 Analog Microelectronics, Inc. AME1117 1A Low Dropout Positive Voltage Regulator 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 Analog Microelectronics, Inc. AME1117 1A Low Dropout Positive Voltage Regulator n Advanced Applications Adjustable Output Voltage V IN = 5V V IN AME1117 V OUT ADJ * V O = 1.5 ~ 3.45V 10F R1 1K 2K 10F R2 10 F ** * 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 GND * 20m VO I O = 0 to 2A 10F 10F V IN AME1117 V O U T GND * 20m * 20m is ballast resistance The inter-connection of #18 wire could act as ballast resistance. 11 Analog Microelectronics, Inc. AME1117 1A Low Dropout Positive Voltage Regulator Regulator with Reference V IN V IN AME1117 ADJ V OUT * VO 10 F 10F 1K ** 10F Zener Diode or Voltage Reference * 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 10F V IN AME1117 V O U T GND * VO 100F 12 Analog Microelectronics, Inc. AME1117 1A Low Dropout Positive Voltage Regulator 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 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. AME1117 1A Low Dropout Positive Voltage Regulator n Package Dimension TO-252 (DPAK) SYMBOLS A B C D E F G H I J K L * : 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. 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 TO-252 (DPAK) SYMBOLS A B C D E F G H I J K L * : Typical value NOTES : 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 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: info@analogmicro.com 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. (c) Analog Microelectronics, Inc. , December, 2001 Document: 1014-DS1117-C Corporate Headquarters Analog Microelectronics, Inc. 3100 De La Cruz Blvd. Suite 201 Santa Clara, CA. 95054-2046 Tel : (408) 988-2388 Fax: (408) 988-2489 Asia Pacific Headquarters AME, Inc. 2F, 187 Kang-Chien Road, Nei-Hu Dist., Taipei 114 Taiwan, R.O.C. Tel : 886 2 2627-8687 Fax : 886 2 2659-2989 |
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