LM2940-50CKCSE3

LM2940-50CKCSE3

  • 厂商:

    BURR-BROWN(德州仪器)

  • 封装:

    TO-220-3

  • 描述:

    IC REG LINEAR 5V 1A TO220-3

  • 数据手册
  • 价格&库存
LM2940-50CKCSE3 数据手册
LM2940 1-A LOW-DROPOUT VOLTAGE REGULATOR www.ti.com SLVS634 – MAY 2006 FEATURES DCY (SOT-223) PACKAGE (TOP VIEW) Dropout Voltage 0.385 V (Typ) at IO = 1 A Output Current in Excess of 1 A Output Voltage Trimmed Before Assembly Reverse-Battery Protection Internal Short-Circuit Current Limit Mirror-Image Insertion Protection Available in – Commercial Temperature (0°C to 125°C) – Extended Temperature (–40°C to 125°C) 3 OUT 1 KTT (TO-263) PACKAGE (TOP VIEW) GND DESCRIPTION/ORDERING INFORMATION The LM2940 positive-voltage regulator features the ability to source 1 A of output current, with a typical dropout voltage of 0.385 V and a maximum of 800 mV over the entire temperature range. Furthermore, a quiescent current reduction circuit has been included, which reduces the ground current when the differential between the input voltage and the output voltage exceeds approximately 3 V. The quiescent current with 1 A of output current and an input-output differential of 5 V is, therefore, only 30 mA. Higher quiescent currents only exist when the regulator is in the dropout mode (VI – VO ≤ 3 V). 2 GND GND IN • • • • • • • 3 OUT 2 GND 1 IN KCS (TO-220) PACKAGE (TOP VIEW) GND OUT GND IN Also designed for vehicular applications, the LM2940 and all regulated circuitry are protected from reverse battery installations or two-battery jumps. During line transients, such as load dump when the input voltage can momentarily exceed the specified maximum operating voltage, the regulator automatically shuts down to protect both the internal circuits and the load. The LM2940 is not harmed by temporary mirror-image insertion. Familiar regulator features, such as short-circuit and thermal-overload protection, also are provided. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2006, Texas Instruments Incorporated LM2940 1-A LOW-DROPOUT VOLTAGE REGULATOR www.ti.com SLVS634 – MAY 2006 ORDERING INFORMATION TA PACKAGE (1) VZ 5V 0°C to 125°C 8V 12 V 5V –40°C to 125°C 8V 12 V (1) ORDERABLE PART NUMBER TOP-SIDE MARKING SOT-223 (DCY) Reel of 2500 LM2940-50CDCYR PREVIEW TO-220 (KCS) Tube of 50 LM2940-50CKCSE3 LM2940-50C TO-263 (KTT) Reel of 1000 LM2940-50CKTTR PREVIEW SOT-223 (DCY) Reel of 2500 LM2940-80CDCYR PREVIEW TO-220 (KCS) Tube of 50 LM2940-80CKCS PREVIEW TO-263 (KTT) Reel of 1000 LM2940-80CKTTR PREVIEW SOT-223 (DCY) Reel of 2500 LM2940-120CDCYR PREVIEW TO-220 (KCS) Tube of 50 LM2940-120CKCS PREVIEW TO-263 (KTT) Reel of 1000 LM2940-120CKTTR PREVIEW SOT-223 (DCY) Reel of 2500 LM2940-50IDCYR PREVIEW TO-220 (KCS) Tube of 50 LM2940-50IKCSE3 LM2940-50I TO-263 (KTT) Reel of 1000 LM2940-50IKTTR PREVIEW SOT-223 (DCY) Reel of 2500 LM2940-80IDCYR PREVIEW TO-220 (KCS) Tube of 50 LM2940-80IKCS PREVIEW TO-263 (KTT) Reel of 1000 LM2940-80IKTTR PREVIEW SOT-223 (DCY) Reel of 2500 LM2940-120IDCYR PREVIEW TO-220 (KCS) Tube of 50 LM2940-120IKCS PREVIEW TO-263 (KTT) Reel of 1000 LM2940-120IKTTR PREVIEW Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. SIMPLIFIED SCHEMATIC VIN X 4X X 2 kW 350X 70X .5X .3X 2.5X 4X X .5X VOUT 20 pF 4 pF 13 kW 15 kW 5.6 V 6 kW 19 kW 3 kW 2 kW 3X X 100 W 50 W 3X X 2.7 kW 4 kW X 1.8 kW 2.4 kW 4X 2.4 kW GND 2 Submit Documentation Feedback LM2940 1-A LOW-DROPOUT VOLTAGE REGULATOR www.ti.com SLVS634 – MAY 2006 Absolute Maximum Ratings (1) over free-air temperature range (unless otherwise noted) VI θJA Input voltage range (2) Package thermal impedance (3) (4) TJ Operating virtual junction temperature Tstg Storage temperature range TL (1) (2) (3) (4) MIN MAX –0.3 45 DCY package 52.8 KCS package 24.8 KTT package 25.3 –65 Maximum lead temperature, time for wave soldering UNIT V °C/W 150 °C 150 °C DCY package 4s 260 KCS package 10 s 260 KTT package 4s 245 °C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. If load is returned to a negative power supply, the output must be diode clamped to GND. Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable ambient temperature is PD = (TJ(max) – TA)/θJA. Operating at the absolute maximum TJ of 150°C can affect reliability. The package thermal impedance is calculated in accordance with JESD 51-7. Recommended Operating Conditions MIN VI TA Input voltage Free-air temperature range MAX 26 Commercial temperature Extended temperature Submit Documentation Feedback 0 125 –40 125 UNIT V °C 3 LM2940 1-A LOW-DROPOUT VOLTAGE REGULATOR www.ti.com SLVS634 – MAY 2006 LM2940x Electrical Characteristics VI = VO + 5 V, IO = 1 A, CO = 22 µF (unless otherwise noted) PARAMETER VO TEST CONDITIONS Output voltage 5 mA ≤ IO ≤ 1 A, 5 V: 6.25 V ≤ VI ≤ 26 V, 8 V: 9.4 V ≤ VI ≤ 26 V Line regulation VO + 2 V ≤ VI ≤ 26 V, IO = 5 mA Load regulation 50 mA ≤ IO ≤ 1 A LM2940I LM2940C ZO Output impedance IQ Quiescent current 100 mAdc, 20 mArms, fO = 120 Hz VO + 2 V ≤ VI ≤ 26 V, IO = 5 mA LM2940I LM2940C VI = VO + 5 V, IO = 1 A Vn Output noise voltage fO = 10 Hz to 100 kHz, IO = 5 mA Ripple rejection fO = 120 Hz, 1 Vrms, IO = 100 mA LM2940I LM2940C IO = 1 A Dropout voltage Reverse polarity dc input voltage IO = 500 mA (1) 4 MIN TYP MAX 25°C 4.85 5 5.15 7.76 8 8.24 Full range 4.75 5.25 7.6 8.4 25°C 20 50 20 25°C 35 50 55 Full range 80 25°C 35 25°C 35 25°C 10 Full range 50 55 15 10 20 10 15 25°C 30 45 30 45 60 54 25°C 60 54 66 48 72 25°C 20 25°C 385 54 dB 66 500 385 800 250 RO = 100 Ω, t ≤ 1 ms LM2940C LM2940I RO = 100 Ω RO = 100 Ω, t ≤ 100 ms LM2940I RO = 100 Ω, t ≤ 1 ms LM2940C 500 800 300 mV 600 110 150 200 25°C 1.6 1.9 1.6 1.9 25°C 60 75 60 75 Full range 60 25°C 45 55 45 55 25°C –15 –30 –15 –30 Full range –15 25°C –15 –30 –15 –30 –75 –50 –75 25°C –50 Full range –50 25°C –45 Full range –45 Full range TA is –40°C to 125°C for the LM2940I and 0°C to 125°C for the LM2940C. Submit Documentation Feedback mV/ 1000 h 32 Full range LM2940I µVrms 240 72 mA 60 150 60 mV 15 15 25°C mV mΩ 10 Full range V 80 25°C 25°C UNIT 80 55 25°C RO = 100 Ω, t ≤ 100 ms 80 130 20 Full range LM2940C Reverse polarity transient input voltage MAX 25°C Short-circuit current Maximum line transient 8V TYP Full range IO = 100 mA IO(MAX) 5V MIN Full range Long-term stability VI – VO TA (1) 60 V –15 V –50 –55 –50 –50 A –50 V LM2940 1-A LOW-DROPOUT VOLTAGE REGULATOR www.ti.com SLVS634 – MAY 2006 LM2940x Electrical Characteristics VI = VO + 5 V, IO = 1 A, CO = 22 µF (unless otherwise noted) PARAMETER VO TEST CONDITIONS Output voltage 5 mA ≤ IO ≤ 1 A, 9 V: 10.5 V ≤ VI ≤ 26 V, 12 V: 13.6 V ≤ VI ≤ 26 V Line regulation VO + 2 V ≤ VI ≤ 26 V, IO = 5 mA Load regulation 50 mA ≤ IO ≤ 1 A LM2940I LM2940C ZO Output impedance IQ Quiescent current 100 mAdc, 20 mArms, fO = 120 Hz VO + 2 V ≤ VI ≤ 26 V, IO = 5 mA LM2940I LM2940C VI = VO + 5 V, IO = 1 A Vn Output noise voltage fO = 10 Hz to 100 kHz, IO = 5 mA Ripple rejection fO = 120 Hz, 1 Vrms, IO = 100 mA LM2940I LM2940C IO = 1 A Dropout voltage Reverse polarity dc input voltage LM2940I RO = 100 Ω, t ≤ 1 ms LM2940C LM2940I LM2940C Reverse polarity transient input voltage (1) RO = 100 Ω, t ≤ 100 ms RO = 100 Ω, t ≤ 1 ms 25°C 11.64 12 12.36 Full range 11.4 12.6 25°C 20 120 25°C 55 120 Full range 200 25°C 55 25°C 80 25°C 10 Full range LM2940I LM2940C UNIT V mV mV 120 mΩ 15 20 25°C 10 15 25°C 30 45 mA 60 25°C µVrms 360 25°C 54 Full range 48 25°C 54 66 dB 66 25°C 48 25°C 400 mV/ 1000 h 500 800 110 Full range RO = 100 Ω, t ≤ 100 ms RO = 100 Ω MAX 25°C Short-circuit current Maximum line transient TYP Full range IO = 100 mA IO(MAX) 12 V MIN Full range Long-term stability VI – VO TA (1) 150 mV 200 25°C 1.6 1.9 25°C 60 75 Full range 60 25°C 45 55 25°C –15 –30 Full range –15 25°C –15 –30 25°C –50 –75 Full range –50 25°C –45 Full range –45 A V V –55 V Full range TA is –40°C to 125°C for the LM2940I and 0°C to 125°C for the LM2940C. Submit Documentation Feedback 5 LM2940 1-A LOW-DROPOUT VOLTAGE REGULATOR www.ti.com SLVS634 – MAY 2006 TYPICAL CHARACTERISTICS DROPOUT VOLTAGE vs OUTPUT CURRENT DROPOUT VOLTAGE vs TEMPERATURE 600 500 550 (V I – V O) – Dropout Voltage – mV (V I – V O) – Dropout Voltage – mV 450 400 350 300 250 200 150 100 500 450 400 IO = 1 A 350 300 250 200 150 IO = 100 mA 100 50 50 0 -40 -25 -10 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 OUTPUT VOLTAGE vs TEMPERATURE 40 IO = 5 mA VI = VO + 5 V 35 VO = 5 V IQ – Quiescent Current – mA 5.3 VO – Output Voltage – V 50 65 80 95 110 125 QUIESCENT CURRENT vs TEMPERATURE 5.5 5.2 5.1 5 4.9 4.8 4.7 30 25 4.5 -40 -25 -10 5 20 35 50 65 80 95 110 125 IO = 1 A 20 15 IO = 500 mA 10 5 4.6 IO = 10 mA 0 -40 -25 -10 TA – Temperature – °C 6 20 35 TA – Air Temperature – °C IO – Output Current – A 5.4 5 5 20 35 50 65 80 95 110 125 TA – Temperature – °C Submit Documentation Feedback LM2940 1-A LOW-DROPOUT VOLTAGE REGULATOR www.ti.com SLVS634 – MAY 2006 TYPICAL CHARACTERISTICS (continued) QUIESCENT CURRENT vs INPUT VOLTAGE QUIESCENT CURRENT vs LOAD CURRENT 100 40 VO = 5 V VI = 10 V VO = 5 V 35 TJ = 25°C 80 IQ – Quiescent Current – mA 70 60 IO = 1 A 50 40 IO = 500 mA 30 IO = 100 mA 20 30 25 20 15 10 5 10 0 0 0 5 10 15 20 25 0 0.1 VI – Input Voltage – V VI = 10 V 16 14 IO = 0 mA 10 12 0 10 -10 8 -20 6 Input Voltage -30 4 -40 2 -50 -40 0 -30 -20 -10 0 10 20 30 40 Output Voltage Deviation – V VO = 5 V Input Voltage Transient – V Output Voltage Deviation – mV 0.5 0.4 0.3 18 Output Voltage 0.9 1 LOAD TRANSIENT RESPONSE 40 20 0.5 0.6 0.7 0.8 IL – Load Current – A LINE TRANSIENT RESPONSE 30 0.2 0.3 0.4 VI = 10 V VO = 5 V 0.2 0.1 0 -0.1 -0.2 Output Voltage -0.3 -0.4 -0.5 -0.6 -0.7 Load Current -0.8 -0.9 -1 0 CO = 22 µF 5.6 5.2 4.8 4.4 4 3.6 3.2 2.8 2.4 2 1.6 1.2 0.8 Load Current – A IQ – Quiescent Current – mA 90 0.4 0 -0.4 10 20 30 40 50 60 70 80 90 100 t – Time – µs t – Time – µs Submit Documentation Feedback 7 LM2940 1-A LOW-DROPOUT VOLTAGE REGULATOR www.ti.com SLVS634 – MAY 2006 TYPICAL CHARACTERISTICS (continued) RIPPLE REJECTION vs FREQUENCY LOW-VOLTAGE BEHAVIOR OUTPUT VOLTAGE vs INPUT VOLTAGE 6 110 VI = 10 V 100 TJ = 25°C Vripple = 1 Vrms 5 IO = 10 mA 80 VO – Output Voltage – V Ripple Rejection – dB 90 70 60 50 IO = 100 mA 40 30 4 3.5 3 2.5 2 10 1.5 0 100 1k 1000 10k 10000 VO = 5 V 4.5 20 10 IO = 1 A 5.5 CO = 22 µF 1 100k 1M 100000 1000000 1 1.5 2 2.5 f – Frequency – Hz OUTPUT AT VOLTAGE EXTREMES OUTPUT VOLTAGE vs INPUT VOLTAGE 4.5 IO – Short-Circuit Current – A VO – Output Voltage – V 7 6 5 4 3 2 1 0 4.5 5 5.5 6 VI – VO = 10 V 4 3.5 3 2.5 2 1.5 1 0.5 -1 -20 -10 0 10 20 30 40 0 -40 -25 -10 5 20 35 50 65 80 95 110 125 TA – Temperature – °C VI – Input Voltage – V 8 4 5 RL = 100 Ω VO = 5V 8 -2 -30 3.5 SHORT-CIRCUIT CURRENT vs TEMPERATURE 10 9 3 VI – Input Voltage – V Submit Documentation Feedback LM2940 1-A LOW-DROPOUT VOLTAGE REGULATOR www.ti.com SLVS634 – MAY 2006 TYPICAL CHARACTERISTICS (continued) OUTPUT IMPEDANCE vs FREQUENCY 10 VI = 10 V ZO – Output Impedance – Ω CO = 22 µF IO = 10 mA Vripple = 1 VPP 1 0.1 0.01 10 1.E+01 100 1.E+02 1k 1.E+03 10k 1.E+04 100k 1.E+05 1M 1.E+06 f – Frequency – Hz Submit Documentation Feedback 9 LM2940 1-A LOW-DROPOUT VOLTAGE REGULATOR www.ti.com SLVS634 – MAY 2006 APPLICATION INFORMATION Typical Application Figure 1 shows a typical circuit configuration for the LM2940. VI Unregulated Input VO Regulated Output LM2940 C1 0.47 µF (see Note A) CO 22 µF (see Note B) IQ A. Required in regulator if located far from power-supply filter B. CO must be at least 22 µF to maintain stability. May be increased without bound to maintain regulation during transients. Locate as close as possible to the regulator. This capacitor must be rated over the same operating temperature range as the regulator, and proper ESR is critical. Figure 1. Typical Application Circuit External Capacitors The output capacitor is critical to maintaining regulator stability and must meet the required conditions for both equivalent series resistance (ESR) and minimum capacitance. Minimum Capacitance The minimum output capacitance required to maintain stability is 22 µF (this value may be increased without limit). Larger values of output capacitance give improved transient response. ESR Limits The ESR of the output capacitor causes loop instability if it is too high or too low. The acceptable range of ESR plotted versus load current is shown in Typical Characteristics. It is essential that the output capacitor meet these requirements, or oscillations can result. It is important to note that for most capacitors, ESR is specified only at room temperature. However, the designer must ensure that the ESR stays inside the limits shown over the entire operating range for the design. For aluminum electrolytic capacitors, ESR can increase by about 30 times as the temperature is reduced from 25°C to –40°C. This type of capacitor is not well suited for low-temperature operation. Solid tantalum capacitors have a more stable ESR over temperature, but are more expensive than aluminum electrolytics. A cost-effective approach sometimes used is to parallel an aluminum electrolytic with a solid tantalum, with the total capacitance split about 75%/25% with the aluminum being the larger value. ESR – Equivalent Series Resistance – Ω If two capacitors are paralleled, the effective ESR is the parallel of the two individual values. The flatter ESR or the tantalum keeps the effective ESR from rising as quickly at low temperatures. 100 CO = 22 µF VO = 5 V 10 1 Stable Region 0.1 0.01 0 200 400 600 800 1000 IO – Output Current – mA Figure 2. Output Capacitor ESR 10 Submit Documentation Feedback LM2940 1-A LOW-DROPOUT VOLTAGE REGULATOR www.ti.com SLVS634 – MAY 2006 APPLICATION INFORMATION (continued) Heatsinking A heatsink may be required, depending on the maximum power dissipation and maximum ambient temperature of the application. Under all possible operating conditions, the junction temperature must be within the range specified under absolute maximum ratings. To determine if a heatsink is required, the power dissipated by the regulator, PD, must be calculated. Figure 3 shows the voltages and currents that are present in the circuit, as well as the formula for calculating the power dissipated in the regulator. IIN VIN VOUT IN OUT GND IL LOAD IG II = IL + IG PD = (VIN – VOUT)IL + (VIN)IG Figure 3. Power Dissipation The next parameter that must be calculated is the maximum allowable temperature rise, TR(max). This is calculated using the formula: TR(max) = TJ(max) – TA(max) Where TJ(max) is the maximum allowable junction temperature, which is 125°C for commercial parts. TA(max) is the maximum ambient temperature encountered in the application. Using the calculated valued for TR(max) and PD, the maximum allowable value for the junction-to-ambient thermal resistance, θJA, now can be found: θJA = TR(max) ÷ PD NOTE: If the maximum allowable value for θJA is found to be ≥53°C/W for the TO-220 package, ≥80°C/W for the TO-263 package, or ≥174°C/W for the SOT-223 package, no heatsink is needed, because the package alone dissipates enough heat to satisfy these requirements. If the calculated value for θJA falls below these limits, a heatsink is required. Submit Documentation Feedback 11 LM2940 1-A LOW-DROPOUT VOLTAGE REGULATOR www.ti.com SLVS634 – MAY 2006 APPLICATION INFORMATION (continued) Heatsinking TO-220 Package Parts The SOT-223 can be attached to a typical heatsink or secured to a copper plane on a PC board. If a copper plane is use, the values of θJA are the same as shown in under Heatsinking TO-263 and SOT-223 Package Parts. If a manufactured heatsink is selected, the value of heatsink-to-ambient thermal resistance, θHA, must be calculated: θHA = θJA – θCH – θJC Where θJC is defined as the thermal resistance from the junction to the surface of the case. A value of 3°C/W can be assumed for θJC for this calculation. θCH is defined as the thermal resistance between the case and the surface of the heatsink. The value of θCH varies from about 1.5°C/W to about 2.5°C/W, depending on the method of attachment, insulator, etc. If the exact value is unknown, 2°C/W should be assumed for θCH. Heatsinking TO-263 and SOT-223 Package Parts Both the TO-263 and SOT-223 packages use a copper plane on the PCB and the PCB itself as a heatsink. To optimize the heatsinking ability of the plane and PCB, solder the tab of the package to the plane. qJA – Thermal Resistance – °C/W Figure 4 shows the measured values of θJA for the TO-263 for different copper area sizes using a typical PCB with 1-oz copper and no solder mask over the copper area used for heatsinking. 80 70 60 50 40 30 0 1 3 2 2 Copper Foil Area – in Figure 4. θJA vs Copper (1 oz) Area for TO-263 Package As shown in Figure 4, increasing the copper area beyond 1 in2 produces very little improvement. It should also be observed that the minimum value of θJA for the TO-263 package mounted to a PCB is 32°C/W. As a design aid, Figure 5 shows the maximum allowable power dissipation compared to ambient temperature for the TO-263 device, assuming θJA is 35°C/W and the maximum junction temperature is 125°C. 12 Submit Documentation Feedback LM2940 1-A LOW-DROPOUT VOLTAGE REGULATOR www.ti.com SLVS634 – MAY 2006 PD – Maximum Power Dissipation – W APPLICATION INFORMATION (continued) 5 4 3 2 TO-263 Package PCB Mount 1-in2 Copper 1 0 -40 -25 75 25 125 TA – Ambient Temperature – °C Figure 5. Maximum Power Dissipation vs Ambient Temperature for TO-263 Package qJA – Thermal Resistance – °C/W Figure 6 and Figure 7 show the information for the SOT-223 package. Figure 7 assumes a θJA of 74°C/W for 1-oz copper, 51°C/W for 2-oz copper, and a maximum junction temperature of 125°C. 200 170 140 110 80 50 0 1 3 2 2 Copper Foil Area – in PD – Maximum Power Dissipation – W Figure 6. θJA vs Copper (2 oz) Area for SOT-223 Package 5 4 SOT-223 Package PCB Mount 2 1-in Copper 3 2-oz Copper 2 1 1-oz Copper 0 -40 -25 25 75 125 TA – Ambient Temperature – °C Figure 7. Maximum Power Dissipation vs Ambient Temperature for SOT-223 Package Submit Documentation Feedback 13 PACKAGE OPTION ADDENDUM www.ti.com 18-Jul-2006 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Eco Plan (2) Qty LM2940-50CKCSE3 ACTIVE TO-220 KCS 3 50 Pb-Free (RoHS) CU SN N / A for Pkg Type LM2940-50IKCSE3 ACTIVE TO-220 KCS 3 50 Pb-Free (RoHS) CU SN N / A for Pkg Type Lead/Ball Finish MSL Peak Temp (3) (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. 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LM2940-50CKCSE3 价格&库存

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LM2940-50CKCSE3
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