XT78L05

XL78L05A, XT78L05 100 mA Positive Voltage Regulators 1. DESCRIPTION The XL78L05 Series of positive voltage regulators are inexpensive, easy−to−use devices suitable for a multitude of applications that require a regulated supply of up to 100 mA. These regulators feature internal current limiting and thermal shutdown making them remarkably rugged. No external components are required with the XL78L05A/XT78L05 devices in many applications. These devices offer a substantial performance advantage over the traditional zener diode−resistor combination, as output impedance and quiescent current are substantially reduced. 2. FEATURES  Wide Range of Available, Fixed Output Voltages  Internal Short Circuit Current Limiting  Internal Thermal Overload Protection  No External Components Required  These are Pb−Free Devices  Two packages: XL78L05A (SOP8), XT78L05 (TO92) www.xinluda.com 1/9 Rev 2.3 XL78L05A, XT78L05 100 mA Positive Voltage Regulators 3. PIN CONFIGURATIONS XL78L05A XT78L05 (TOP VIEW) Pin Functions Symbol Pin Description VOUT XL7805A (SOP8) 1 XT78L05 (TO92) 1 GND 2,3,6,7 2 Ground NC 4, 5 - No connection VIN 8 3 Input supply voltage pin www.xinluda.com Output voltage pin 2/9 Rev 2.3 XL78L05A, XT78L05 100 mA Positive Voltage Regulators 4. SCHEMATIC DIAGRAM VIN Q11 Q5 Q3 15k Q12 Q1 Q10 5.0k 3.8k Q4 1.9k 1.2k Q6 VOUT 0-25k 19k 2.2k Q9 C Q8 Q2 Z1 3.0 2.85k Q7 420 1.0k GND Figure 4-1. Representative Schematic Diagram www.xinluda.com 3/9 Rev 2.3 XL78L05A, XT78L05 100 mA Positive Voltage Regulators Input XL78L05A /XT78L05 Output Co[2] 0.1μF Cin[1] 0.33μF Figure 4-2. Standard Application A common ground is required between the input and the output voltages. The input voltage must remain typically 2.0 V above the output voltage even during the low point on the input ripple voltage. [1] Cin is required if regulator is located an appreciable distance from power supply filter. [2] CO is not needed for stability; however, it does improve transient response 5. SPECIFICATIONS 5.1. Absolute Maximum Ratings Rating Symbol Value Unit Input Voltage VI 30 Vdc Storage Temperature Range Tstg −45 to +150 C Maximum Junction Temperature TJ 125 C Moisture Sensitivity Level MSL 1 – ESD Capability, Human Body Model (Note 1) ESDHBM 2000 V ESD Capability, Machine Model (Note 1) ESDMM 200 V ESD Capability, Charged Device Model (Note 1) V ESDCDM Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. [1] 2000 This device series incorporates ESD protection and is tested by the following methods: ESD Human Body Model tested per AEC−Q100−002 (EIA/JESD22−A114) ESD Machine Model tested per AEC−Q100−003 (EIA/JESD22−A115) ESD Charged Device Model tested per EIA/JES D22/C101, Field Induced Charge Model. 5.2. Thermal Resistance Characteristics [2] Rating Symbol Value Unit Package Dissipation PD Internally Limited W Thermal Characteristics, TO92 Thermal Resistance, Junction−to−Ambient RθJA 200 C/W Thermal Characteristics, SOP8 Thermal Resistance, Junction−to−Ambient RθJA Refer to Figure 8 C/W Thermal Resistance, Junction−to−Ambient depends on P.C.B. Copper area. See details in Figure 8. Thermal Resistance, Junction−to−Case is not defined. SOP 8 lead and TO92 packages that do not have a heat sink like other packages may have. This is the reason that a Theta JC is never specified. A little heat transfer will occur through the package but since it is plastic, it is minimal. The majority of the heat that is transferred is through the leads where they connect to the circuit board. www.xinluda.com 4/9 Rev 2.3 XL78L05A, XT78L05 100 mA Positive Voltage Regulators 5.3. Electrical Characteristics (VI = 10 V, IO = 40 mA, CI = 0.33 µF, CO = 0.1 µF, − 40C < TJ < +85C, unless otherwise noted.) Characteristics Symbol Output Voltage (TJ = +25C) VO Line Regulation (TJ = +25C, IO = 40 mA) 7.0 Vdc  VI  20 Vdc 8.0 Vdc  VI  20 Vdc Regline Load Regulation (TJ = +25C, 1.0 mA  IO  100 mA) (TJ = +25C, 1.0 mA  IO  40 mA) Output Voltage (7.0 Vdc  VI  20 Vdc, 1.0 mA  IO  40 mA) (VI = 10 V, 1.0 mA  IO  70 mA) XL78L05A, XT78L05 Unit Min Typ Max 4.8 5.0 5.2 – – 55 45 150 100 Regload – – 11 5.0 60 30 mV VO 4.75 4.75 – – 5.25 5.25 Vdc Input Bias Current (TJ = +25C) (TJ = +85C) IIB – – 3.8 – 6.0 5.5 mA Input Bias Current Change (8.0 Vdc  VI  20 Vdc) (1.0 mA  IO  40 mA) ΔIIB – – – – 1.5 0.1 mA Output Noise Voltage (TA = +25C, 10 Hz  f 100 kHz) Vn – 40 – µV Ripple Rejection (IO = 40 mA, f = 120 Hz, 8.0 Vdc  VI  18 V, TJ = +25C) RR 41 49 – dB Dropout Voltage (TJ = +25C) VI − VO – 1.7 – Vdc www.xinluda.com 5/9 Vdc mV Rev 2.3 8.0 XT78L05 Vout = 5.0 V TJ = 25C VO, OUTPUT VOLTAGE (V) 6.0 IO = 1.0 mA 4.0 IO = 40 mA 2.0 0 0 2.0 IO = 100 mA 4.0 6.0 VI, INPUT VOLTAGE (V) 8.0 10 VI -VO , INPUT/OUTPUT DIFFERENTIAL VOLTAGE (V) XL78L05A, XT78L05 100 mA Positive Voltage Regulators 2.5 IO = 70 mA 2.0 1.5 IO = 40 mA 1.0 IO = 1.0 mA Dropout of Regulation is defined as when VO = 2% of VO 0.5 0 0 Figure 5-1. Dropout Characteristics IIB, INPUT BIAS CURRENT IIB, INPUT BIAS CURRENT (mA) 3.8 3.6 3.4 3.2 XT78L05 VI = 10 V VO= 5.0 V IO = 40 mA 0 25 50 75 100 3.0 125 XT78L05 Vout = 5.0 V IO = 40 mA TJ = 25C 2.0 1.0 0 125 0 100 RθJA = 200C/W PD(max) to 25C = 625 mW 50 75 100 125 150 TA, AMBIENT TEMPERATURE (C) RJA, THERMAL RESISTANCE JUNCTION-TO-AIR ( C/W) No Heatsink 25 10 15 20 25 30 35 40 Figure 5-4. Input Bias Current versus Input Voltage 2000 1000 5.0 VI, INPUT VOLTAGE (V) Figure 5-3. Input Bias Current versus Ambient Temperature PD, POWER DISSIPATION 100 4.0 TA, AMBIENT TEMPERATURE (C) 10 75 5.0 4.0 0 50 TJ, JUNCTION TEMPERATURE (C) Figure 5-2. Dropout Voltage versus Junction Temperature 4.2 3.0 25 170 150 PD(max) for TA = 50C 130 110 Graph represents symmetrical layout 90 L 2.0 oz. Copper 70 L 50 30 3.0 mm RθJA 0 10 20 30 L, LENGTH OF COPPER (mm) 40 50 Figure 5-5. Maximum Average Power Dissipation versus Figure 5-6. SOP8 Thermal Resistance and Maximum Power Dissipation versus P.C.B. Copper Length Ambient Temperature − TO92 Type Package www.xinluda.com 6/9 Rev 2.3 XL78L05A, XT78L05 100 mA Positive Voltage Regulators 6. APPLICATIONS INFORMATION 6.1. Design Considerations The XL78L05 Series of fixed voltage regulators are designed with Thermal Overload Protection that shuts down the circuit when subjected to an excessive power overload condition. Internal Short Circuit Protection limits the maximum current the circuit will pass. In many low current applications, compensation capacitors are not required. However, it is recommended that the regulator input be bypassed with a capacitor if the regulator is connected to the power supply filter with long wire lengths, or if the output load capacitance is large. The input bypass capacitor should be selected to provide good high−frequency characteristics to insure stable operation under all load conditions. A 0.33 µF or larger tantalum, mylar, or other capacitor having low internal impedance at high frequencies should be chosen. The bypass capacitor should be mounted with the shortest possible leads directly across the regulators input terminals. Good construction techniques should be used to minimize ground loops and lead resistance drops since the regulator has no external sense lead. Bypassing the output is also recommended. Input XL78L05A /XT78L05 R 0.33µF Constant Current to Grounded Load IO Figure 6-1. Current Regulator The XL78L05A/XT78L05 regulators can also be used as a current source when connected as above. Resistor R determines the current as follows: IO  5 .0  IB R IIB = 3.8 mA over line and load changes For example, a 100 mA current source would require R to be a 50 Ω, 1/2 W resistor and the output voltage compliance would be the input voltage less 7 V. www.xinluda.com 7/9 Rev 2.3 XL78L05A, XT78L05 100 mA Positive Voltage Regulators 7. ORDERING INFORMATION Part Device Package Body size Temperature Number Marking Type (mm) (°C) XL78L05A XL78L05A SOP8 4.90 * 3.90 -40 to +85 XT78L05 XT78L05 TO92 4.58 * 4.58 -40 to +85 Transport Package Media Quantity MSL3 T&R 2500 MSL3 T&R 1000 MSL 8. DIMENSIONAL DRAWINGS SOP8 PIN1 UNIT A1 A2 e D E E1 L www.xinluda.com 8/9 Rev 2.3 XL78L05A, XT78L05 100 mA Positive Voltage Regulators TO92 PIN1 if you need help contact customer service staff Xinluda reserves the right to change the above information without prior notice www.xinluda.com 9/9 Rev 2.3