LM1117/LM1117I
800mA Low-Dropout Linear Regulator
General Description
The LM1117is a ries of low dropout voltage regulators with a dropout of 1.2V at 800mA of load current.It has the same pin-out as National Semiconductor’s industry standard LM317.
The LM1117is available in an adjustable version,which can t the output voltage from 1.25V to 13.8V with only two external resistors.In addition,it is also available in five fixed voltages,1.8V,2.5V,2.85V,3.3V,and 5V.
The LM1117offers current limiting and thermal shutdown.Its circuit includes a zener trimmed bandgap reference to as-sure output voltage accuracy to within ±1%.
The LM1117ries is available in LLP ,TO-263,SOT-223,TO-220,and TO-252D-PAK packages.A minimum of 10µF tantalum capacitor is required at the output to improve the transient respon and stability.
Features
n Available in 1.8V,2.5V,2.85V,3.3V,5V,and Adjustable Versions
n Space Saving SOT-223and LLP Packages n Current Limiting and Thermal Protection n Output Current 800mA n Line Regulation 0.2%(Max)n Load Regulation 0.4%(Max)n Temperature Range —LM11170˚C to 125˚C —LM1117I −40˚C to 125˚C
Applications
n 2.85V Model for SCSI-2Active Termination n Post Regulator for Switching DC/DC Converter n High Efficiency Linear Regulators n Battery Charger
n
Battery Powered Instrumentation
Typical Application
Active Terminator for SCSI-2Bus
10091905
Fixed Output Regulator
10091928
June 2004
LM1117/LM1117I 800mA Low-Dropout Linear Regulator
©2004National Semiconductor Corporation
Ordering Information
Package Temperature
Range Part Number Packaging Marking
Transport Media NSC Drawing 3-lead SOT-223
亲子诵读0˚C to +125˚C
LM1117MPX-ADJ N03A Tape and Reel MP04A
LM1117MPX-1.8N12A Tape and Reel LM1117MPX-2.5N13A Tape and Reel LM1117MPX-2.85N04A Tape and Reel LM1117MPX-3.3N05A Tape and Reel LM1117MPX-5.0
N06A Tape and Reel −40˚C to +125˚C
LM1117IMPX-ADJ N03B Tape and Reel LM1117IMPX-3.3N05B Tape and Reel LM1117IMPX-5.0
N06B Tape and Reel
3-lead TO-220
0˚C to +125˚C
LM1117T-ADJ LM1117T-ADJ Rails T03B LM1117T-1.8LM1117T-1.8Rails LM1117T-2.5LM1117T-2.5Rails LM1117T-2.85LM1117T-2.85Rails LM1117T-3.3LM1117T-3.3Rails LM1117T-5.0
LM1117T-5.0Rails 3-lead TO-252
0˚C to +125˚C
LM1117DTX-ADJ LM1117DT-ADJ Tape and Reel TD03B LM1117DTX-1.8LM1117DT-1.8Tape and Reel LM1117DTX-2.5LM1117DT-2.5Tape and Reel LM1117DTX-2.85LM1117DT-2.85Tape and Reel LM1117DTX-3.3LM1117DT-3.3Tape and Reel LM1117DTX-5.0
LM1117DT-5.0Tape and Reel −40˚C to +125˚C
等量齐观的意思LM1117IDTX-ADJ LM1117IDT-ADJ Tape and Reel LM1117IDTX-3.3LM1117IDT-3.3Tape and Reel LM1117IDTX-5.0
LM1117IDT-5.0Tape and Reel 8-lead LLP
0˚C to +125˚C
LM1117LDX-ADJ 1117ADJ Tape and Reel LDC08A LM1117LDX-1.81117-18Tape and Reel LM1117LDX-2.51117-25Tape and Reel LM1117LDX-2.851117-28Tape and Reel LM1117LDX-3.31117-33Tape and Reel LM1117LDX-5.0
1117-50Tape and Reel −40˚C to 125˚C
LM1117ILDX-ADJ 1117IAD Tape and Reel LM1117ILDX-3.31117I33Tape and Reel LM1117ILDX-5.0
1117I50Tape and Reel TO-263
0˚C to +125˚C
LM1117SX-ADJ LM1117SADJ Tape and Reel TS3B LM1117SX-2.85LM1117S2.85Tape and Reel LM1117SX-3.3LM1117S3.3Tape and Reel LM1117SX-5.0
LM1117S5.0
Tape and Reel
L M 1117/L M 1117I
2
Block Diagram
10091901
Connection Diagrams
洋洋大观的意思SOT-223
10091904
Top View
TO-220
10091902
Top View
TO-252
10091938
Top View
TO-263
10091944
Top View
10091945
Side View
LLP
10091946
When using the LLP package
Pins2,3&4must be connected together and
Pins5,6&7must be connected together
Top View
LM1117/LM1117I
廉政谈话记录内容
3
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,plea contact the National Semiconductor Sales Office/Distributors for availability and specifications.Maximum Input Voltage (V IN to GND)20V
Power Dissipation (Note 2)Internally Limited
Junction Temperature (T J )(Note 2)
150˚C
Storage Temperature Range -65˚C to 150˚C
Lead Temperature
TO-220(T)Package 260˚C,10c SOT-223(IMP)Package 260˚C,4c
ESD Tolerance (Note 3)
注意事项
2000V
Operating Ratings (Note 1)
Input Voltage (V IN to GND)
15V
Junction Temperature Range (T J )(Note 2)LM11170˚C to 125˚C LM1117I
−40˚C to 125˚C
LM1117Electrical Characteristics
Typicals and limits appearing in normal type apply for T J =25˚C.Limits appearing in Boldface type apply over the entire junc-tion temperature range for operation,0˚C to 125˚C.Symbol Parameter Conditions
Min (Note 5)Typ (Note 4)Max (Note 5)Units
V REF
Reference Voltage
LM1117-ADJ
I OUT =10mA,V IN -V OUT =2V,T J =25˚C 10mA ≤I OUT ≤800mA,1.4V ≤V IN -V OUT ≤10V
1.2381.225
1.2501.250
1.2621.270
V V
V OUT
Output Voltage
LM1117-1.8
I OUT =10mA,V IN =3.8V,T J =25˚C 0≤I OUT ≤800mA,3.2V ≤V IN ≤10V 1.7821.746 1.8001.800 1.8181.854V V LM1117-2.5
I OUT =10mA,V IN =4.5V,T J =25˚C 0≤I OUT ≤800mA,3.9V ≤V IN ≤10V 2.4752.450 2.5002.500 2.5252.550V V LM1117-2.85
I OUT =10mA,V IN =4.85V,T J =25˚C 0≤I OUT ≤800mA,4.25V ≤V IN ≤10V 0≤I OUT ≤500mA,V IN =4.10V 2.8202.7902.790 2.8502.8502.850 2.8802.9102.910V V V LM1117-3.3
I OUT =10mA,V IN =5V T J =25˚C 0≤I OUT ≤800mA,4.75V ≤V IN ≤10V 3.2673.235 3.3003.300 3.3333.365V V LM1117-5.0
I OUT =10mA,V IN =7V,T J =25˚C 0≤I OUT ≤800mA,6.5V ≤V IN ≤12V
4.9504.900
5.0005.000 5.0505.100V V ∆V OUT
Line Regulation (Note 6)
LM1117-ADJ
I OUT =10mA,1.5V ≤V IN -V OUT ≤13.75V 0.0350.2%LM1117-1.8
I OUT =0mA,3.2V ≤V IN ≤10V 16mV LM1117-2.5
I OUT =0mA,3.9V ≤V IN ≤10V 1
6
mV
LM1117-2.85
I OUT =0mA,4.25V ≤V IN ≤10V 16mV LM1117-3.3
I OUT =0mA,4.75V ≤V IN ≤15V 16mV LM1117-5.0
I OUT =0mA,6.5V ≤V IN ≤15V
1
10
mV
L M 1117/L M 1117I
4
LM1117Electrical Characteristics(Continued)
外卖用英语怎么说Typicals and limits appearing in normal type apply for T J=25˚C.Limits appearing in Boldface type apply over the entire junc-tion temperature range for operation,0˚C to125˚C.
Symbol Parameter Conditions
Min
(Note5)
Typ
(Note4)
Max
(Note5)
Units
∆V OUT Load Regulation
(Note6)LM1117-ADJ
V IN-V OUT=3V,10≤I OUT≤800mA0.20.4% LM1117-1.8
V IN=3.2V,0≤I OUT≤800mA
110mV
LM1117-2.5
V IN=3.9V,0≤I OUT≤800mA
110mV
LM1117-2.85虚拟现实应用技术
V IN=4.25V,0≤I OUT≤800mA110mV LM1117-3.3
V IN=4.75V,0≤I OUT≤800mA110mV LM1117-5.0
V IN=6.5V,0≤I OUT≤800mA115mV
V IN-V OUT Dropout Voltage
(Note7)I OUT=100mA 1.10 1.20V I OUT=500mA 1.15 1.25V I OUT=800mA 1.20 1.30V
I LIMIT Current Limit V IN-V OUT=5V,T J=25˚C80012001500mA
Minimum Load Current(Note8)LM1117-ADJ
V IN=15V 1.75mA
Quiescent Current LM1117-1.8
简笔画山水
V IN≤15V
510mA
LM1117-2.5
V IN≤15V
510mA
LM1117-2.85
V IN≤10V510mA
LM1117-3.3
V IN≤15V510mA
LM1117-5.0
V IN≤15V510mA Thermal Regulation T A=25˚C,30ms Pul0.010.1%/W Ripple Regulation f RIPPLE=120Hz,V IN-V OUT=3V V RIPPLE
=1V PP
6075dB Adjust Pin Current60120µA
Adjust Pin Current Change 10≤I OUT≤800mA,
1.4V≤V IN-V OUT≤10V0.25µA
Temperature Stability0.5% Long Term Stability T A=125˚C,1000Hrs0.3% RMS Output Noi(%of V OUT),10Hz≤f≤10kHz0.003%
Thermal Resistance Junction-to-Ca 3-Lead SOT-22315.0˚C/W 3-Lead TO-220 3.0˚C/W 3-Lead TO-25210˚C/W
Thermal Resistance Junction-to-Ambient (No air flow)3-Lead SOT-223(No heat sink)136˚C/W
3-Lead TO-220(No heat sink)79˚C/W
3-Lead TO-252(Note9)(No heat sink)92˚C/W
3-Lead TO-26355˚C/W
8-Lead LLP(Note10)40˚C/W
LM1117/LM1117I
5
