Document
SHENZHEN YANGJING MICROELECTRONICS CO.,LTD
1A LOW DROPOUT LINEAR REGULATOR
GENERAL DESCRIPTION The 1117 is a series of low dropout three-terminal egulators with a dropout of 1.15V at 1A output current.
The 1117 series provides current limiting and thermal shutdown. Its circuit includes a trimmed bandgap reference to assure output voltage accuracy to be within 1%. Current limit is trimmed to ensure specified output Current and controlled short-circuit current. On-chip thermal shutdown provides protection against any combination of overload and ambient temperature that would create excessive junction temperature.
The 1117 has an adjustable version, that can provide the output voltage from 1.25V to 5V with only 2 external resistors.
The 1117 series is available in the industry standard SOT-223,SOT-89,TO-220,TO-252 and TO-263 power packages. FEATURES • Low Dropout Voltage: 1.15V at 1A Output Current • Trimmed Current Limit • On-Chip Thermal Shutdown • Three-Terminal Adjustable or Fixed 1.5V, 1.8V, 2.5V, 3.3V, 5V
• Operation junction Temperature: 0 ℃ to125℃
APPLICATIONS • PC Motherboard • LCD Monitor • Graphic Card • DVD-Video player • NIC/Switch • Telecom Modem • ADSL Modem • Printer and other peripheral Equipment
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PIN CONFIGURATIONS
T Package (SOT-223)
A Package (SOT-89)
P Package (TO-220)
U Package (TO-252)
B Package (TO-263)
ADJ/GND OUTPUT INPUT
Figure 2. Pin Configurations of 1117
D Package (TO-251)
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1A LOW DROPOUT LINEAR REGULATOR
FUNCTIONAL BLOCK DIAGRAM
Figure 3. Functional Block Diagram of 1117
YANGJING MICROELECTRONICS
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1A LOW DROPOUT LINEAR REGULATOR
ORDERING INFORMATION
Package
Operating Junction Temperature Range
SOT-223
0 to 125℃
SOT-89
0 to 125℃
TO-220
0 to 125℃
TO-252
0 to 125℃
TO-263
0 to 125℃
TO-251
0 to 125℃
Χ 1117- Z
Package T: SOT-223 A: SOT-89 P: TO-220
U: TO-252 B: TO-263 D: TO-251
YANGJING MICROELECTRONICS
Circuit Type
ADJ: Adjustable Output
1.5: Fixed Output 1.5V 1.8: Fixed Output 1.8V 2.5: Fixed Output 2.5V 3.3: Fixed Output 3.3V 5.0: Fixed Output 5.0V
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Part Number T1117-ADJ T1117-1.5 T1117-1.8 T1117-2.5 T1117-3.3 T1117-5.0 A1117-ADJ A1117-1.5 A1117-1.8 A1117-2.5 A1117-3.3 A1117-5.0 P1117-ADJ P1117-1.5 P1117-1.8 P1117-2.5 P1117-3.3 P1117-5.0 U1117-ADJ U1117-1.5 U1117-1.8 U1117-2.5 U1117-3.3 U1117-5.0 B1117-ADJ B1117-1.5 B1117-1.8 B1117-2.5 B1117-3.3 B1117-5.0 D1117-ADJ D1117-1.5 D1117-1.8 D1117-2.5 D1117-3.3 D1117-5.0
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ABOSLUTE MAXIMUM RATINGS (NOTE 1)
Parameter
Value
Unit
VIN Maximum Junction Temperature Storage Temperature Range Lead Temperature (Soldering, 10sec.) ESD (Machine Model)
20 150 -65 to 150 300 600
V
℃ ℃ ℃ V
Note 1: Stresses greater than those listed under ”Absolute Maximum Ratings” may cause permanent damage to
the device. These are stress ratings only, and functional of the device at these or any other conditions beyond those
indicated under “Recommended Operating Conditions” is not implied. Exposure to “Absolute Maximum Ratings” for
extended periods may affect device reliability.
RECOMMENDED OPERATING CONDITIONS
Parameter
Min Max Unit
VIN Operating Junction Temperature Range
15 V 0 125 ℃
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Operating Conditions: VIN≤10V, TJ=25℃ unless otherwise specified.
Parameter Reference Voltage Output Voltage
Line Regulation
Load Regulation
Conditions 1117-ADJ, IOUT=10mA, VIN -VOUT =2V, 10mA≤IOUT≤1A, 1.4V≤VIN -VOUT ≤8V, P≤ Maximum power Dissipation
1117-1.5, IOUT=10mA, VIN=3.5V 10mA≤IOUT≤1A, 3.0V≤VIN ≤10V 1117-1.8, IOUT=10mA, VIN=3.8V 10mA≤IOUT≤1A, 3.2V≤VIN ≤10V 1117-2.5, IOUT=10mA, VIN=4.5V 10mA≤IOUT≤1A, 3.9V≤VIN ≤10V 1117-3.3, IOUT=10mA, VIN=5.0V 10mA≤IOUT≤1A, 4.75V≤VIN ≤10V 1117-5.0, IOUT=10mA, VIN=7.0V 10mA≤IOUT≤1A, 6.5V≤VIN ≤12V 1117-ADJ IOUT=10mA, 1.5V≤VIN -VOUT ≤10V 1117-1.5 IOUT=10mA, 1.5V≤VIN -VOUT ≤10V 1117-1.8 IOUT=10mA, 1.5V≤VIN -VOUT ≤10V 1117-2.5 IOUT=10mA, 1.5V≤VIN -VOUT ≤10V 1117-3.3 IOUT=10mA, 1.5V≤VIN -VOUT ≤10V 1117-5.0 IOUT=10mA, 1.5V≤VIN -VOUT ≤10V 1117-ADJ VIN-VOUT=2V, 10mA≤IOUT ≤1A 1117-1.5 VIN-VOUT=2V, 10mA≤IOUT ≤1A 1117-1.8 VIN-VOUT=2V, 10mA≤IOUT ≤1A 1117-2.5 VIN-VOUT=2V, 10mA≤IOUT ≤1A 1117-3.3 VIN-VOUT=2V, 10mA≤IOUT ≤1A 1117-5.0 VIN-VOUT=2V, 10mA≤IOUT ≤1A
Min
1.238 1.225
1.485 1.470 1.782 1.746 2.475 2.450 3.267 3.235 4.950 4.900
Typ
1.250 1.250
1.5 1.5 1.8 1.8 2.5 2.5 3.3 3.3 5.0 5.0
0.035
Max
1.262 1.270
1.515 1.530 1.818 1.854 2.525 2.550 3.333 3.365 5.050 5.100
0.2
Unit V
V V V V V %
1 6 mV
1 6 mV
1 6 mV
1 6 mV
1 10 mV
0.2 0.4 %
1 10 mV
1 10 mV
1 10 mV
1 10 mV
1 15 mV
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Operating Conditions: VIN≤10V, TJ=25℃ unless otherwise specified.
Parameter Dropout Voltage
Current Limit Adjust Pin Current Adjust Pin Current Change Minimum Load Current (ADJ) Quiescent Current Ripple Rejecti.