LM1117

LM1117 FCI | Alldatasheet

Document overview

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Technical content

Features

n Available in 2.85V, 3.3V, 5V, and Adjustable Versions n Space Saving SOT-223 Package n Current Limiting and Thermal Protection n Output Current 800mA n Temperature Range 0˚C to 125˚C n Line Regulation 0.2% (Max) n Load Regulation 0.4% (Max)

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 Typical Application Active Terminator for SCSI-2 Bus Fixed Output Regulator LM1117 800mA Low-dropout Linear Regulator

Ordering Information

Package Temperature Range Packing 0˚C to +125˚C 3-lead SOT-223 LM1117 -ADJ-223 Tape and Reel LM1117 -2.85-223 Tape and Reel LM1117 -3.3-223 Tape and Reel LM1117 -5.0-223 Tape and Reel 3-lead TO-220 LM1117 -ADJ-220 Rails 5 lead available LM1117 -2.85-220 Rails suffix add 220-5L LM1117 -3.3-220 Rails LM1117 -5.0-220 Rails 3-lead TO-252 LM1117 -ADJ-252 Tape and Reel 5 lead available LM1117-2.85-252 Tape and Reel suffix add 252-5L LM1117-3.3-252 Tape and Reel LM1117-5.0-252 Tape and Reel Block Diagram LM1117 800mA Low-dropout Linear Regulator

LM1117 800mA Low-dropout Linear Regulator

Absolute Maximum Ratings(Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Maximum Input Voltage (VIN to GND) LM1117-ADJ, LM1117-3.3, LM1117-5.0 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 260˚C, 4 sec ESD Tolerance (Note 3) 2000V Operating Ratings(Note 1) Input Voltage (VIN to GND) LM1117-ADJ, LM1117-3.3, LM1117-5.0 15V LM1117-2.85 10V Junction Temperature Range (TJ) (Note 2) 0˚C to 125˚C

Electrical Characteristics

Typicals and limits appearing in normal type apply for TJ = 25˚C. Limits appearing inBoldfacetype 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 VREF Reference Voltage LM1117-ADJ IOUT =10mA, VIN-VOUT =2V, TJ=25˚C 10mA ≤IOUT ≤ 800mA, 1.4V≤ VIN-VOUT ≤10V 1.238 1.225 1.250 1.250 1.262 1.270 V V V OUT Output Voltage LM1117-2.85 IOUT =10mA, VIN=4.85V, TJ=25˚C O ≤IOUT ≤800mA, 4.25V≤ VIN≤10V O ≤IOUT ≤500mA, VIN=4.10V 2.820 2.790 2.790 2.850 2.850 2.850 2.880 2.910 2.910 V V V LM1117-3.3 I OUT =10mA, VIN=5V TJ=25˚C O ≤IOUT ≤800mA, 4.75V≤ VIN≤10V 3.267 3.235 3.300 3.300 3.333 3.365 V V LM1117-5.0 I OUT =10mA, VIN=7V, TJ=25˚C O ≤IOUT ≤ 800mA, 6.5V≤ VIN≤12V 4.950 4.900 5.000 5.000 5.050 5.100 V V ΔV OUT Line Regulation (Note 6) LM1117-ADJ I OUT =10mA, 1.5V≤ VIN-VOUT ≤13.75V 0.035 0.2 % LM1117-2.85 IOUT =0mA, 4.25V≤ VIN≤10V 1 6 mV LM1117-3.3 I OUT =0mA, 4.75V≤ VIN≤15V 1 6 mV LM1117-5.0 I OUT =0mA, 6.5V≤ VIN≤15V 1 10 mV ΔV OUT Load Regulation (Note 6) LM1117-ADJ V IN-V OUT =3V, 10≤IOUT ≤800mA 0.2 0.4 % LM1117-2.85 V IN=4.25V, 0≤IOUT ≤800mA 1 10 mV LM1117-3.3 V IN=4.75V, 0≤IOUT ≤800mA 1 10 mV LM1117-5.0 V IN=6.5V, 0≤IOUT ≤800mA 1 15 mV VIN-V OUT Dropout Voltage (Note 7) IOUT =100mA 1.10 1.20 V IOUT =500mA 1.15 1.25 V IOUT =800mA 1.20 1.30 V ILIMIT Current Limit V IN-VOUT =5V, TJ=25˚C 800 1200 1500 mA Minimum Load Current (Note 8) LM1117-ADJ VIN=15V 1.7 5 mA LM1117 800mA Low-dropout Linear Regulator

Electrical Characteristics(Continued) Typicals and limits appearing in normal type apply for TJ = 25˚C. Limits appearing inBoldfacetype 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 Quiescent Current LM1117-2.85 VIN≤10V 5 10 mA LM1117-3.3 V IN≤15V 5 10 mA LM1117-5.0 V IN≤15V 5 10 mA Thermal Regulation T A=25˚C, 30ms Pulse 0.01 0.1 % /W Ripple Regulation f RIPPLE =120Hz, VIN-VOUT =3V VRIPPLE =1V PP 60 75 dB Adjust Pin Current 60 120 µA Adjust Pin Current Change 10≤ IOUT ≤ 800mA, 1.4V≤ VIN-VOUT ≤ 10V 0.2 5 µA Temperature Stability 0.5 % Long Term Stability TA=125˚C, 1000Hrs 0.3 % RMS Output Noise ( % of VOUT ), 10Hz≤f≤10kHz 0.003 % Thermal Resistance Junction-to-Case 3-Lead SOT-223 3,5 -Lead TO-220 3,5 -Lead TO-252 15.0 3.0 ˚C/W ˚C/W ˚C/W Thermal Resistance Junction-to-Ambient (No heat sink; No air flow) 3-Lead SOT-223 ,5 -Lead TO-220 3,5 -Lead TO-252(Note 9) 136 ˚C/W ˚C/W ˚C/W Note 1:Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is in- tended to be functional, but specific performance is not guaranteed. For guaranteed specifications and the test conditions, see the Electrical Characteristics. Note 2:The maximum power dissipation is a function of TJ(max),θJA, and TA. The maximum allowable power dissipation at any ambient temperature is PD =( TJ- (max)–T A)/θJA. All numbers apply for packages soldered directly into a PC board. Note 3:For testing purposes, ESD was applied using human body model, 1.5kΩ in series with 100pF. Note 4:Typical Values represent the most likely parametric norm. Note 5:All limits are guaranteed by testing or statistical analysis. Note 6: Load and line regulation are measured at constant junction room temperature. Note 7:The dropout voltage is the input/output differential at which the circuit ceases to regulate against further reduction in input voltage. It is measured when the output voltage has dropped 100mV from the nominal value obtained at VIN=V OUT +1.5V. Note 8:The minimum output current required to maintain regulation. Note 9:Minimum pad size of 0.038in2 LM1117 800mA Low-dropout Linear Regulator

Typical Performance Characteristics Dropout Voltage (VIN-V OUT ) DS100919-22 Short-Circuit Current DS100919-23 Load Regulation LM1117-ADJ Ripple Rejection LM1117-ADJ Ripple Rejection vs. Current Temperature Stability LM1117 800mA Low-dropout Linear Regulator

Typical Performance Characteristics(Continued) LM1117-2.85 Load Transient Response LM1117-5.0 Load Transient Response LM1117-2.85 Line Transient Response LM1117-5.0 Line Transient Response Adjust Pin Current LM1117 800mA Low-dropout Linear Regulator

1.0 External Capacitors/Stability

1.1 Input Bypass Capacitor

input is a suitable input bypassing for almost all applications.

1.2 Adjust Terminal Bypass Capacitor

The R1 is the resistor between the output and the adjust pin.

1.3 Output Capacitor

(22µf tantalum) is required.

2.0 Output Voltage

REF , between the output and the adjust terminal.

3.0 Load Regulation

tion, a few precautions are needed. directly tied to the ground terminal on the negative side.

4.0 Protection Diodes

the output voltage without damaging the device. FIGURE 1. Basic Adjustable Regulator FIGURE 2. Typical Application using Fixed Output FIGURE 3. Best Load Regulation using Adjustable

can withstand microsecond surge currents of 10A to 20A.

5.0 Heatsink Requirements

Figure 5. The heat gen- FIGURE 4. Regulator with Protection Diode FIGURE 5. Cross-sectional view of Integrated Circuit FIGURE 6. Power Dissipation Diagram

Typical Application Circuits Adjusting Output of Fixed Regulators Regulator with Reference 1.25V to 10V Adjustable Regulator with Improved Ripple Rejection 5V Logic Regulator with Electronic Shutdown* Battery Backed-Up Regulated Supply Low Dropout Negative Supply Battery Backed-Up Regulated Supply LM1117 800mA Low-dropout Linear Regulator

PhysicalDimensions inches(millimeters)unlessotherwisenoted (Continued) 3-Lead TO-220 Package PhysicalDimensions inches(millimeters)unlessotherwisenoted (Continued) 3-Lead TO-252 Package LM1117 800mA Low-dropout Linear Regulator

PhysicalDimensions inches(millimeters)unlessotherwisenoted LM1117 800mA Low-dropout Linear Regulator