LM1117MPX-1.8 National Semiconductor, LM1117MPX-1.8 Datasheet

IC, LDO VOLT REG, 1.8V, 0.8A, SOT-223-3

LM1117MPX-1.8

Manufacturer Part Number
LM1117MPX-1.8
Description
IC, LDO VOLT REG, 1.8V, 0.8A, SOT-223-3
Manufacturer
National Semiconductor
Datasheet

Specifications of LM1117MPX-1.8

Primary Input Voltage
15V
Output Voltage Fixed
1.8V
Dropout Voltage Vdo
1.2V
No. Of Pins
3
Output Current
800mA
Operating Temperature Range
0°C To +125°C
Termination Type
SMD
Filter Terminals
SMD
Rohs Compliant
No
Current Rating
800A
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

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© 2006 National Semiconductor Corporation
LM1117/LM1117I
800mA Low-Dropout Linear Regulator
General Description
The LM1117 is a series 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 LM1117 is available in an adjustable version, which can
set 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 LM1117 offers current limiting and thermal shutdown. Its
circuit includes a zener trimmed bandgap reference to as-
sure output voltage accuracy to within
The LM1117 series is available in LLP, TO-263, SOT-223,
TO-220, and TO-252 D-PAK packages. A minimum of 10µF
tantalum capacitor is required at the output to improve the
transient response and stability.
Typical Application
Active Terminator for SCSI-2 Bus
±
DS100919
1%.
Fixed Output Regulator
Features
n Available in 1.8V, 2.5V, 2.85V, 3.3V, 5V, and Adjustable
n Space Saving SOT-223 and LLP Packages
n Current Limiting and Thermal Protection
n Output Current
n Line Regulation
n Load Regulation
n Temperature Range
Applications
n 2.85V Model for SCSI-2 Active Termination
n Post Regulator for Switching DC/DC Converter
n High Efficiency Linear Regulators
n Battery Charger
n Battery Powered Instrumentation
Versions
— LM1117
— LM1117I
10091928
10091905
−40˚C to 125˚C
www.national.com
0˚C to 125˚C
0.2% (Max)
0.4% (Max)
April 2006
800mA

Related parts for LM1117MPX-1.8

LM1117MPX-1.8 Summary of contents

Page 1

... General Description The LM1117 is a series 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 LM1117 is available in an adjustable version, which can set the output voltage from 1.25V to 13.8V with only two external resistors ...

Page 2

... TO-252 0˚C to +125˚C −40˚C to +125˚C 8-lead LLP 0˚C to +125˚C −40˚C to 125˚C TO-263 0˚C to +125˚C www.national.com Part Number Packaging Marking LM1117MPX-ADJ N03A LM1117MPX-1.8 N12A LM1117MPX-2.5 N13A LM1117MPX-2.85 N04A LM1117MPX-3.3 N05A LM1117MPX-5.0 N06A LM1117IMPX-ADJ N03B LM1117IMPX-3.3 N05B LM1117IMPX-5 ...

Page 3

Block Diagram Connection Diagrams SOT-223 10091904 Top View TO-220 Top View TO-252 10091938 Top View 10091902 When using the LLP package Pins 2, 3 & 4 must be connected together and Pins 5, 6 & 7 must be connected together ...

Page 4

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Maximum Input Voltage (V to GND) IN Power Dissipation (Note 2) Junction Temperature ( (Note 2) Storage Temperature Range Lead Temperature LM1117 Electrical Characteristics Typicals and limits appearing in normal type apply for T tion temperature range for operation, 0˚ ...

Page 5

LM1117 Electrical Characteristics Typicals and limits appearing in normal type apply for T tion temperature range for operation, 0˚C to 125˚C. Symbol Parameter ∆V Load Regulation LM1117-ADJ OUT (Note LM1117-1 LM1117-2 LM1117-2.85 V ...

Page 6

LM1117I Electrical Characteristics Typicals and limits appearing in normal type apply for T tion temperature range for operation, −40˚C to 125˚C. Symbol Parameter V Reference Voltage LM1117I-ADJ REF I 10mA ≤ I ≤ 10V V Output Voltage LM1117I-3.3 OUT I ...

Page 7

Note 2: The maximum power dissipation is a function –T )/θ . All numbers apply for packages soldered directly into a PC board. D J(max Note 3: For testing purposes, ESD was applied ...

Page 8

Typical Performance Characteristics LM1117-ADJ Ripple Rejection vs. Current Adjust Pin Current LM1117-5.0 Load Transient Response www.national.com (Continued) Temperature Stability 10091907 LM1117-2.85 Load Transient Response 10091926 LM1117-2.85 Line Transient Response 10091909 8 10091925 10091908 10091910 ...

Page 9

Typical Performance Characteristics LM1117-5.0 Line Transient Response Application Note 1.0 EXTERNAL CAPACITORS/STABILITY 1.1 Input Bypass Capacitor An input capacitor is recommended. A 10µF tantalum on the input is a suitable input bypassing for almost all applications. 1.2 Adjust Terminal Bypass ...

Page 10

Application Note (Continued) FIGURE 2. Typical Application using Fixed Output Regulator When the adjustable regulator is used (Figure 3), the best performance is obtained with the positive side of the resistor R1 tied directly to the output terminal of the ...

Page 11

Application Note (Continued) FIGURE 5. Cross-sectional view of Integrated Circuit Mounted on a printed circuit board. Note that the case temperature is measured at the point where the leads contact with the mounting pad surface The LM1117 regulators have internal ...

Page 12

Application Note (Continued) Layout 14 0.284 15 0.392 16 *Tab of device attached to topside copper www.national.com TABLE 1. θ Different Heatsink Area (Continued) JA Copper Area 0.284 0.392 0.5 0.5 12 Thermal Resistance ...

Page 13

Application Note (Continued) FIGURE 7. θ vs. 1oz Copper Area for SOT-223 JA FIGURE 8. θ vs. 2oz Copper Area for TO-252 JA FIGURE 9. Maximum Allowable Power Dissipation vs. Ambient Temperature for SOT-223 FIGURE 10. Maximum Allowable Power Dissipation ...

Page 14

Application Note (Continued) FIGURE 13. Top View of the Thermal Test Pattern in Actual Scale www.national.com 10091941 14 ...

Page 15

Application Note (Continued) FIGURE 14. Bottom View of the Thermal Test Pattern in Actual Scale 10091942 15 www.national.com ...

Page 16

Typical Application Circuits Adjusting Output of Fixed Regulators Regulator with Reference 1.25V to 10V Adjustable Regulator with Improved Ripple Rejection www.national.com 10091930 5V Logic Regulator with Electronic Shutdown* 10091931 10091929 16 10091927 ...

Page 17

Typical Application Circuits (Continued) Battery Backed-Up Regulated Supply Low Dropout Negative Supply 17 10091932 10091933 www.national.com ...

Page 18

Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 3-Lead SOT-223 NS Package Number MP04A 3-Lead TO-220 NS Package Number T03B 18 ...

Page 19

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 3-Lead TO-263 NS Package Number TS3B 19 www.national.com ...

Page 20

Physical Dimensions www.national.com inches (millimeters) unless otherwise noted (Continued) 3-Lead TO-252 NS Package Number TD03B 8-Lead LLP NS Package Number LDC08A 20 ...

Page 21

... BANNED SUBSTANCE COMPLIANCE National Semiconductor manufactures products and uses packing materials that meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. ...

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