Dropout Positive Voltage Regulator nGeneral Descriptions AME
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AME1117
Dropout Positive Voltage Regulator
nGeneral Descriptions
AME1117 low-dropout positive voltage regulator. available fixed adjustable output voltage versions. Overcurrent thermal protection integrated onto chip. Output current will limit while reaches pre-set current temperature limit. dropout voltage specified 1.4V Maximum full rated output current. AME1117 series provides excellent regulation over line, load temperature variations.
nKey Features
dropout voltage .1.2V Adjustable fixed voltages 2.5V, 3.3V, 5.0V Typical line regulation 0.2% Typical load regulation 0.15% Adjust current less than 90µA Overcurrent protection Thermal protection Available TO-220, TO-252, SOT-223
nApplications
High Efficiency Linear Regulators 3.3V Voltage Converter Battery Charger Post Regulators Switching Supplies
nFunctional Block Diagram
Typical Application
E1117
itin lifie
4.75V 10µF 10µF
Load
ctio
Bandgap
Input range depends VOUT Please refer electrical characteristics.
Figure
Figure
AME1117
Dropout Positive Voltage Regulator
Configuration
AME1117
1117
ADJ/GND
TO-220 Front View
SOT-223 Front View
1117
AME1117
ADJ/GND
VOUT
ADJ/GND
TO-252 DPAK-2) Front View
TO-252 DPAK-2) Front View
AME1117
Dropout Positive Voltage Regulator
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 SOT-223
AME1117BCCT
TO-252 (DPAK-2)
AME1117CCCT
AME1117DCCT
AME1117ACBT
AME1117BCBT
TO-220
AME1117CCBT
AME1117DCBT
AME1117
Dropout Positive Voltage Regulator
Absolute Maximum Ratings
Parameter Input Voltage TO-220 Thermal Resistance (Junction Case) TO-252 SOT-223 TO-220 Thermal Resistance (Junction Ambient) TO-252 SOT-223 Operating Junction Temperature Range Storage Temperature Range Lead Temperature sec) TSTG TLEAD Symbol Maximum
Unit
Electrical Characteristics
AME1117AXXX Parameter Reference voltage Line regulation Load regulation Dropout voltage Current limit Temp. coefficient Adjust current Adjust current change Temperature stability Minimum load current output noise Ripple rejection ratio Symbol RegLINE RegLOAD IADJ IADJ Test conditions
Min.
Typ.
Max.
Unit
10mA 4.75~7V, 10mA 10mA~1A 10mA~1A, 2.75~7V 2.75~7V, 10mA~1A
1.238 1.250 1.262 Over Temp. 1.225 1.250 1.275 25oC 25oC Over Temp. Over Temp. Over Temp.
0.05 0.005
%/"C
25oC 2.75~7V, 10mA~1A Over Temp.
2.75~7V, 10mA~1A, Over Temp. 100mA, Over Temp. 25oC Over Temp.
0.003
AME1117
Dropout Positive Voltage Regulator
AME1117BXXX Parameter Output voltage Line regulation Load regulation Symbol RegLINE RegLOAD Test conditions
Min. 2.475 Over Temp. 2.450 25oC 25oC Over Temp. Over Temp.
Typ. 2.500 2.500 0.05 0.005 0.003
Max. 2.525 2.550
Unit
4.75~7V, 0A~1A 0A~1A, 4.75~7V, Over Temp.
Dropout voltage Current limit Quiescent Current Temp. Coefficient Temperature stability output noise Ripple rejection ratio
%/"C
0A~1A, Over Temp. 4.75~7V, 0A~1A 100mA, Over Temp. 25oC Over Temp.
AME1117CXXX Parameter Output voltage Line regulation Load regulation Symbol RegLINE RegLOAD Test conditions
Min. 3.270 Over Temp. 3.234 25oC Over Temp. Over Temp.
Typ. 3.300 3.300 0.05 0.005 0.003
Max. 3.330 3.366
Unit
4.75~7V, 0A~1A 0A~1A, 4.75~7V, Over Temp.
Dropout voltage Current limit Quiescent Current Temp. coefficient Temperature stability output noise Ripple rejection ratio
%/"C
0A~1A, Over Temp. 4.75~7V, 0A~1A 100mA, Over Temp. Over Temp.
*Line regulation test circuit
AME1117
AME1117DXXX Parament Output voltage Line regulation Load regulation Symbol RegLINE RegLOAD Test conditions
Dropout Positive Voltage Regulator
Min. 4.950 Over Temp. 4.900 25oC Over Temp. Over Temp. Over Temp.
Typ. 5.000 5.000 0.05 0.005 0.003
Max. 5.050 5.100
Unit
7~9V, 0A~1A 0A~1A, 7~10V, Over Temp.
Dropout voltage Current limit Quiescent Current Temp. coefficient Temperature stability output noise Ripple rejection ratio
%/"C
0A~1A, Over Temp. 7~10V, 0A~1A 100mA, Over Temp. Over Temp.
Figure
AME1117
Dropout Positive Voltage Regulator
Performance Characteristics
Load Regulation Temperature Stablilty
0.00
1.252
Output Voltage deviation
Reference Voltage
1.250 1.248 1.246 1.244 1.242 1.240 1.238
-0.05
-0.10
-0.15
-0.20
-0.25
Temperature
Temperature
Short Circuit Current
Dropout Voltage
1.25 1.20
Output Short Circuit Current
Drop-out Voltage
1.15 1.10 1.05 1.00 0.95 0.90
Input/Output Differential Voltage(V)
Load Current
AME1117
Dropout Positive Voltage Regulator
Adjust Current
Load Transient Response
Adjust Current
Temperature(
Minimum Operating Current
Line Transient Response
Minimum Operation Current
Time (µS)
Input/Output Differential Voltage(V)
AME1117
Dropout Positive Voltage Regulator
Application Descriptions
Output voltage adjustment Like most regulators, AME1117 regulates output comparing output voltage internally generated reference voltage. adjustable version, VREF available externally 1.25V between VOUT ADJ. voltage ratio formed should conduct 10mA (minimum output load). output voltage given following equation:
Current Limit Protection AME1117 protected against overload conditions. Current protection triggered typically 1.5A.
Stability Load Regulation AME1117 requires capacitor from VOUT provide compensation feedback internal gain stage. This ensure stability output terminal. Typically, 10µF tantalum 50µF aluminum electrolytic sufficient. Note: important that this capacitor does exceed 0.5. output capacitor does have theoretical upper limit increasing value will increase stability. COUT 100µF more typical high current regulator design. adjustable version, best load regulation accomplished when resistor divider (R1) connected directly output AME1117. When connected, multiplied divider ratio. fixed output versions, internally connected output. ground connected side load order eliminate ground loop errors.
Parasitic Line Resistance (Connect case)
fixed versions AME1117, voltage divider provided internally.
VOUT
Figure Thermal protection AME1117 thermal protection which limits junction temperature 150OC. However, device functionality only guaranteed maximum junction temperature +125OC. power dissipation junction temperature AME1117 DPAK package given (VIN VOUT) IOUT TJUNCTION TAMBIENT Note: TJUNCTION must exceed 125OC
Connect load
Figure
AME1117
Dropout Positive Voltage Regulator
Thermal Consideration AME1117 series contain thermal limiting circuitry designed protect itself from over-temperature conditions. Even normal load conditions, maximum junction temperature ratings must exceeded. mentioned thermal protection section, need consider sources thermal resistance between junction ambient. includes junction-to-case, case-to-heat-sink interface heat sink thermal resistance itself. Junction-to-case thermal resistance specified from junction bottom case directly below die. Proper mounting required ensure best possible thermal flow from this area package heat sink. case devices this product series electrically connected output. Therefore, case device must electrically isolated, thermally conductive spacer recommended.
AME1117
Dropout Positive Voltage Regulator
Advanced Applications
Adjustable Output Voltage
AME1117
3.45V
10µF
10µF
Vref R2/R1) Iadj Optional improved ripple rejection
Paralleling Regulators
AME1117
10µF
10µF
AME1117
ballast resistance inter-connection wire could ballast resistance.
AME1117
Dropout Positive Voltage Regulator
Regulator with Reference
AME1117
10µF
10µF
Zener Diode Voltage Reference
Vref breakdown voltage Zener Diode) Optional improved ripple rejection
Regulator with Reverse Diode Protection
10µF
AME1117
100µF
AME1117
Dropout Positive Voltage Regulator
Package Dimension
TO-220
SYMBOLS MILLIMETERS 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 1.14 1.52 6.17 REF. INCHES 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 0.0449 0.06 0.243 REF.
Notes Dimension apply plate finish. solder lead finish dimension should 0.015"-0.027" (0.38-0.69)
SOT-223
SYMBOLS
MILLIMETERS 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 4.60 6.70 7.30 0.91 2.00 0.06
INCHES 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 0.181 0.2638 0.2874 0.0360 0.0787 0.0024
AME1117
Dropout Positive Voltage Regulator
Package Dimension
TO-252 (DPAK)
SYMBOLS Typical value
NOTES CONTROLLING DIMENSION MILLIMETERS. MAXIMUM LEAD THICKNESS INCLUDES LEAD FINISH THICKNESS MINIMUM LEAD THICKNESS MINIMUM THICKNESS BASE MATERIAL.
MILLIMETERS 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 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 Typical value
NOTES
MILLIMETERS 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 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
CONTROLLING DIMENSION MILLIMETERS. MAXIMUM LEAD THICKNESS INCLUDES LEAD FINISH THICKNESS MINIMUM LEAD THICKNESS MINIMUM THICKNESS BASE MATERIAL.
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