L7805CV

L7805 Wide VIN 1.5A Fixed Voltage Regulators General Description The L7805 Family monolithic 3-terminal positive voltage regulators empIOy internal currentlimiting, thermal shutdown and safe-area compensation, making them essentially indestructible. If adequate heat sinking is provided, they can deliver over 1.5-A output current. They are intended as fixed voltage regulators in a wide range of applications including IOcal (on-card) regulation for elimination of noise and distribution problems associated with single-point regulation. In addition to use as fixed voltage regulators, these devices can be used with external components to obtain adjustable output voltages and currents. Considerable effort was expended to make the entire series of regulators easy to use and minimize the number of external components. It is not necessary to bypass the output, although this does improve transient response. Input bypassing is needed only if the regulator is IOcated far from the filter capacitor of the power supply. Features      Output Current up to 1.5 A Available in Fixed 5-V, 12-V, and 15-V Options Internal Thermal OverIOad, Short-Circuit and SOA Protection Available in Space-SaVINg SOT-223 Package Output Capacitance Not Required for Stability Ordering Information DEVICE L7805CV Package Type TO-220 MARKING Packing L7805CV Tube Packing QTY 1000/BOX Applications        Industrial Power Supplies SMPS Post Regulation HVAC Systems AC Inventors Test and Measurement Equipment Brushed and Brushless DC Motor Drivers Solar Energy String Invertors XBLWversion1.0 www.xinboleic.com 技术支持热线：4009682003 文档仅供参考，实际应用测试为准 第 1 页 共 12 页 L7805 Wide VIN 1.5A Fixed Voltage Regulators Pin Functions PIN NAME INPUT GND OUTPUT NO. 1 2 3 I/O I I/O O DESCRIPTION Input voltage pin Ground pin Output voltage pin Absolute Maximum Ratings MIN MAX UNIT 35 V DC input voltage Internal power dissipation Internally Limited (3) Maximum junction temperature Lead temperature (soldering, 10 sec.) TO-3 package (NDS) Lead temperature 1,6 mm (1/16 in) from case for 10 s Storage temperature -65 150 ℃ 300 ℃ 230 ℃ 150 ℃ (1)Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximumrated conditions for extended periods may affect device reliability. (2)If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and specifications. (3)The maximum alIOwable power dissipation at any ambient temperature is a function of the maximum junction temperature for operation (TJMAX = 125℃ or 150℃), the junction-to-ambient thermal resistance (θJA), and the ambient temperature (TA). PDMAX = (TJMAX − TA)/θJA. If this dissipation is exceeded, the die temperature rises above TJMAX and the electrical specifications do not apply. If the die temperature rises above 150℃, the device goes into thermal shutdown. For the TO-3 package (NDS), the junction-to-ambient thermal resistance (θJA) is 39 ℃/W. When using a heat sink, θJA is the sum of the 4℃/W junction-to-case thermal resistance (θJC) of the TO-3 package and the case-to-ambient thermal resistance of the heat sink. For the TO-220 package (NDE), θJA is 54 ℃/W and θJC is 4℃/W. ESD Ratings V(ESD) Electrostatic dischareg Human-body model(HBM)(1) MAX UNIT ±2000 V (1)ESD rating is based on the human-body model, 100pF discharged through 1.5kΩ. Thermal Information THERMAL METRIC(1) RθJA RθJC(top) Junction-to-ambient thermal resistance Junction-to-case (top) thermal resistance L7805 Family NDE (TO-220) 23.9 UNIT ℃/W 16.7 ℃/W RθJB Junction-to-board thermal resistance 5.3 ℃/W ψJT Junction-to-top characterization parameter 3.2 ℃/W XBLWversion1.0 www.xinboleic.com 技术支持热线：4009682003 文档仅供参考，实际应用测试为准 第 2 页 共 12 页 L7805 Wide VIN 1.5A Fixed Voltage Regulators ψJB RθJC(bot) Junction-to-board characterization parameter 5.3 ℃/W Junction-to-case (bottom) thermal resistance 1.7 ℃/W (1)For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report. Electrical Characteristics (VO=5V,VI=10V,0℃≤TJ≤125℃ unless otherwise specified(1)) PARAMETER VO Output voltage ∆VO Line regulation ∆VO IOad regulation IQ Quiescent current ∆IQ Quiescent current change VN Output noise voltage ∆��� ∆���� RO VIN Ripple rejection Dropout voltage Output resistance Short-circuit current Peak output current Average TC of Vout Input voltage required to maintain line regulation TEST CONDITIONS TJ=25℃,5 mA≤IO≤1A PD≤15W,5 mA≤IO≤1A 7.5V≤VIN≤20V TJ=25℃ 7V≤VIN≤25V IO=500mA Over temperature 8V≤VIN≤20V TJ=25℃ 7.5V≤VIN≤20V IO≤1A Over temperature 8V≤VIN≤12V 5mA≤IO≤1.5A TJ=25℃ 250mA≤IO≤750mA Over temperature,5mA≤IO≤1A TJ =25℃ IO≤1A Over temperature 0℃≤TJ≤125℃,5mA≤IO≤1A TJ=25℃,IO≤1A 7V≤VIN≤20V Over temperature, IO≤ 500mA TA=25℃,10Hz≤f≤100kHz TJ=25℃,IO≤1A f=120Hz 8V≤VIN≤18V Over temperature, IO≤500mA TJ=25℃,IO=1A f=1kHz TJ=25℃ TJ=25℃ Over temperature, IO = 5 mA TJ=25℃,IO≤1A MIN 4.8 TYP 5 MAX 5.2 UNIT V 5.25 V 50 mV 50 mV 50 mV 25 mV 50 25 50 8 8.5 mV mV mV mA mA mA mA mA μV dB dB V mQ A A mV/℃ 4.75 3 10 0.5 1 1 62 62 40 80 2 8 2.1 2.4 -0.6 7.5 V (1)All characteristics are measured with a 0.22-μF capacitor from input to ground and a 0.1-μF capacitor from output to ground. All characteristics except noise voltage and ripple rejection ratio are measured using pulse techniques (tw ≤ 10 ms, duty cycle ≤ 5%). Output voltage changes due to changes in internal temperature must be taken into account separately. XBLWversion1.0 www.xinboleic.com 技术支持热线：4009682003 文档仅供参考，实际应用测试为准 第 3 页 共 12 页 L7805 Wide VIN 1.5A Fixed Voltage Regulators Typical Characteristics XBLWversion1.0 www.xinboleic.com 技术支持热线：4009682003 文档仅供参考，实际应用测试为准 第 4 页 共 12 页 L7805 Wide VIN 1.5A Fixed Voltage Regulators Typical Characteristics (continued) XBLWversion1.0 www.xinboleic.com 技术支持热线：4009682003 文档仅供参考，实际应用测试为准 第 5 页 共 12 页 L7805 Wide VIN 1.5A Fixed Voltage Regulators Typical Characteristics (continued) Application Information The L7805 series is designed with thermal protection, output short-circuit protection, and output transistor safe area protection. However, as with any IC regulator, it becomes necessary to take precautions to assure that the regulator is not inadvertently damaged. The following describes possible misapplications and methods to prevent damage to the regulator. Shorting the Regulator Input XBLWversion1.0 www.xinboleic.com 技术支持热线：4009682003 文档仅供参考，实际应用测试为准 第 6 页 共 12 页 L7805 Wide VIN 1.5A Fixed Voltage Regulators When using large capacitors at the output of these regulators, a protection diode connected input to output (Figure 15) may be required if the input is shorted to ground. Without the protection diode, an input short causes the input to rapidly approach ground potential, while the output remains near the initial VOUT because of the stored charge in the large output capacitor. The capacitor will then discharge through a large internal input to output diode and parasitic transistors. If the energy released by the capacitor is large enough, this diode, low current metal, and the regulator are destroyed. The fast diode in Figure 15 shunts most of the capacitors discharge current around the regulator. Generally no protection diode is required for values of output capacitance ≤ 10μF. Raising the Output Voltage Above the Input Voltage Because the output of the device does not sink current, forcing the output high can cause damage to internal low current paths in a manner similar to that just described in Shorting the Regulator Input. Regulator Floating Ground When the ground pin alone becomes disconnected, the output approaches the unregulated input, causingpossible damage to other circuits connected to VOUT. If ground is reconnected with power ON, damage may also occur to the regulator. This fault is most likely to occur when plugging in regulators or modules with on card regulators into powered up sockets. The power must be turned off first, the thermal limit ceases operating, or the ground must be connected first if power must be left on. See Figure 16. Transient Voltages If transients exceed the maximum rated input voltage of the device, or reach more than 0.8V below ground and have sufficient energy, they will damage the regulator. The solution is to use a large input capacitor, a series input breakdown diode, a choke, a transient suppressor or a combination of these. Figure 15. Input Short Figure 16. Regulator Floating Ground XBLWversion1.0 www.xinboleic.com 技术支持热线：4009682003 文档仅供参考，实际应用测试为准 第 7 页 共 12 页 L7805 Wide VIN 1.5A Fixed Voltage Regulators Figure 17. Transients When a value for θ(H–A) is found, a heat sink must be selected that has a value that is less than or equal to this number. θ(H–A) is specified numerically by the heat sink manufacturer in this catalog or shown in a curve that plots temperature rise vs power dissipation for the heat sink. Fixed Output Voltage Regulator The L7805 Family devices are primarily designed to provide fixed output voltage regulation. The simplest implementation of L7805 Family is shown in Figure18. Figure 18. Fixed Output Voltage Regulator Design Requirements The device component count is very minimal. Although not required, TI recommends employing bypass capacitors at the output for optimum stability and transient response. These capacitors must be placed as close as possible to the regulator. If the device is located more than 6 inches from the power supply filter, it is required to employ input capacitor. Detailed Design Procedure The output voltage is set based on the device variant. LM340x and L7805 Family are available in 5-V, 12-V and 15-V regulator options. XBLWversion1.0 www.xinboleic.com 技术支持热线：4009682003 文档仅供参考，实际应用测试为准 第 8 页 共 12 页 L7805 Wide VIN 1.5A Fixed Voltage Regulators Application Curve Figure 19. VOUT vs VIN, VOUT = 5V XBLWversion1.0 www.xinboleic.com 技术支持热线：4009682003 文档仅供参考，实际应用测试为准 第 9 页 共 12 页 L7805 Wide VIN 1.5A Fixed Voltage Regulators System Examples Figure 20. Current Regulator Figure 21. Adjustable Output Regulator Figure 22. High Input Voltage Circuit With Series Figure 23. High Input Voltage Circuit implementation With Transistor Figure 24. High Current Voltage Regulatorure Figure25. High Output Current With ShortCircuit Protection XBLWversion1.0 www.xinboleic.com 技术支持热线：4009682003 文档仅供参考，实际应用测试为准 第 10 页 共 12 页 L7805 Wide VIN 1.5-A Fixed Voltage Regulators Outline Drawing TO220 XBLWversion1.0 Unit:mm 文档仅供参考，实际应用测试为准 www.xinboleic.com 技术支持热线：4009682003 第 11 页 共 12 页 L7805 Wide VIN 1.5-A Fixed Voltage Regulators Statement：  Shenzhen xinbole electronics co., ltd. reserves the right to change the product specifications, without notice! Before placing an order, the customer needs to confirm whether the information obtained is the latest version, and verify the integrity of the relevant information.  Any semiconductor product is liable to fail or malfunction under certain conditions, and the buyer shall be responsible for complying with safety standards in the system design and whole machine manufacturing using Shenzhen xinbole electronics co., ltd products, and take appropriate security measures to avoid the potential risk of failure may result in personal injury or property losses of the situation occurred!  Product performance is never ending, Shenzhen xinbole electronics co., ltd will be dedicated to provide customers with better performance, better quality of integrated circuit products. XBLWversion1.0 文档仅供参考，实际应用测试为准 www.xinboleic.com 技术支持热线：4009682003 第 12 页 共 12 页