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| MIL-PRF-38534 CERTIFIED DUAL +/VOLTAGE REGULATOR M.S.KENNEDY CORP. 4707 Dey Road Liverpool, N.Y. 13088 5211 SERIES (315) 701-6751 FEATURES: Internal Thermal Overload Protection Output Current to 1.5 Amps Output Voltage Internally Trimmed to 1% Accuracy Electrically Isolated Case Lead Form Options: Straight and Gull Wing Alternate Voltage Combinations Available Contact MSKfor MIL-PRF-38534 Qualification Status DESCRIPTION: MSK521X MSK521XG The MSK 5211 series are dual +/- voltage regulators offering excellent output accuracy to 1% maximum. Excellent line and load regulation characteristics ensure highly accurate performance. The MSK 5211 series regulators are equipped with internal thermal overload protection. The devices are packaged in a space efficient 20 pin flatpack with two lead form options, straight and gull wing. EQUIVALENT SCHEMATIC TYPICAL APPLICATIONS Switching Power Supply Post Regulators Constant Voltage/Current Regulators High Efficiency Linear Regulators System Power Supplies PIN-OUT INFORMATION 1 2 3 4 5 6 7 8 9 10 1 -VRTN -VOUT -VOUT -VOUT -VOUT +VRTN +VOUT +VOUT +VOUT +VOUT 20 19 18 17 16 15 14 13 12 11 -VIN -VIN -VIN -VIN -Ccomp +Ccomp +VIN +VIN +VIN +VIN Rev. 6/06 PRELIMINARY ABSOLUTE MAXIMUM RATINGS 7 -40C to +85C -55C to +125C ELECTRICAL SPECIFICATIONS Parameter POSITIVE OUTPUT REGULATORS: Output Voltage Tolerance IOUT=10mA; VIN=VOUT+3V 1 2,3 Dropout Voltage IOUT=0.5A; VOUT=1% 1 2,3 Load Regulation 10mAIOUT0.5A VIN=VOUT+3V Line Regulation IOUT=10mA VOUT+3VVIN35V Thermal Resistance 1 JUNCTION TO CASE @ 125C 1 2,3 1 2,3 0.2 0.8 1.6 1.9 0.2 0.4 0.6 1.0 12.5 1.0 3.0 3.0 3.0 2.0 2.5 1.5 2.5 13.5 0.2 1.6 0.2 0.6 12.5 1.5 3.5 2.5 2.0 % % V V % % % % Test Conditions Group A Subgroup 4 MSK 521X H/E 3 MSK 521X 2 Min. Typ. Max. Min. Typ. Max. 14.0 C/W NEGATIVE OUTPUT REGULATORS: Output Voltage Tolerance IOUT=10mA; VIN=VOUT -3V 1 2,3 Dropout Voltage IOUT=0.5A; VOUT=1% 1 2,3 Load Regulation 10mAIOUT0.5A VIN=VOUT -3V Line Regulation IOUT=10mA -35VVINVOUT-3V Thermal Resistance 1 JUNCTION TO CASE @ 125C 1 2,3 1 2,3 0.2 0.8 1.9 1.5 0.2 0.4 0.1 0.2 13.5 1.0 3.0 3.0 3.0 2.0 2.5 1.5 2.5 14.5 0.2 1.9 0.2 0.1 13.5 1.5 3.0 2.5 2.0 % % V V % % % % 15.0 C/W NOTES: 1 2 3 4 Guaranteed by design but not tested. Typical parameters are representative of actual device performance but are for reference only. Industrial grade and "E" suffix devices shall be tested to subgroup 1 unless otherwise specified. Military grade devices shall be 100% tested to subgroups 1,2 and 3. Subgroup 1 TA=TC=+25C Subgroup 2 TA=TC=+125C Subgroup 3 TA=TC=-55C Please consult the factory if alternate output voltages are required. For positive regulator, output decoupled to ground using 1F minimum tantalum capacitor unless otherwise specified. For negative regulator, output decoupled to ground using 1F minimum tantanlum capacitor. Continuous operation at or above absolute maximum ratings may adversly effect the device performance and/or life cycle. PART 5 NUMBER MSK5211 MSK5212 MSK5213 MSK5214 OUTPUT VOLTAGES POSITIVE 5.0 10.0 12.0 15.0 NEGATIVE 5.0 10.0 12.0 15.0 5 6 7 2 PRELIMINARY Rev. - +VIN -VIN PD +IOUT -IOUT TJ +Input Voltage (VIN-VOUT) -Input Voltage (VIN-VOUT) Power Dissipation +Output Current -Output Current Junction Temperature +40VDC -40VDC Internally Limited 1.5A 1.5A +150C TST Storage Temperature Range TLD Lead Temperature Range (10 Seconds) TC Case Operating Temperature MSK 5211-5214 MSK 5211-5214(H/E) -65C to +150C 300C Units 6/06 APPLICATION NOTES CAPACITOR SELECTION POSITIVE REGULATOR INPUT CAPACITOR: An input bypass capacitor is recommenced when using the MSK 5211 series regulators. This is especially true if the regulator is located farther than 6 inches from the power supply filter capacitors. For most applications a 1F solid tantalum capacitor will be suitable. TYPICAL APPLICATION CIRCUIT OUTPUT CAPACITOR: A minimum of a 1F solid tantalum capacitor should also be used at the output to insure stability. Any increase of this output capacitor larger than 10F will only improve output impedance. LOAD REGULATION It is important to keep the output connection between the regulator and the load as short as possible since this directly affects the load regulation. For example, if 20 gauge wire were used which has a resistance of about 0.008 ohms per foot, this would result in a drop of 8mV/ft at 1Amp of load current. It is also important to follow the capacitor selection guidelines to achieve best performance. +CCOMP CAPACITOR: For improved ripple rejection, +Ccomp can be bypassed to ground with a 10F tantalum capacitor. This bypass capacitor will provide 80dB ripple rejection. Increased capacitance above 10F does not improve the ripple rejection at frequencies above 120Hz. If the Ccomp bypass capacitor is used, it may be necessary to add a protection diode to protect the regulator from capacitor discharge damage. See Typical Applications Circuit for clarification. If the bypass capacitor is not used, it should be left open since it is internally connected to the regulator. HEAT SINKING To determine if a heat sink is required for your application and if so, what type, refer to the thermal model and governing equation below. Governing Equation: Tj = Pd x (Rjc + Rcs + Rsa) + Ta WHERE Tj = Junction Temperature Pd = Total Power Dissipation Rjc = Junction to Case Thermal Resistance Rcs = Case to Heat Sink Thermal Resistance Rsa = Heat Sink to Ambient Thermal Resistance Tc = Case Temperature Ta = Ambient Temperature Ts = Heat Sink Temperature EXAMPLE: NEGATIVE REGULATOR INPUT CAPACITOR: Once again, if the regulator will be farther than 6 inches from power supply filter capacitors, then an input capacitor will be required on the negative regulator. It is recommended that a 1F solid tantalum capacitor be used. OUTPUT CAPACITOR: A minimum of a 1F solid tantalum capacitor should also be used at the output to insure stability. Any increase of this output capacitor larger than 10F will only improve output impedance. This example demonstrates an analysis where the output currents are at 0.5 amp each and both inputs are 8V. Conditions for MSK 5211: +Vin = +8.0V; Iout = 0.5A Positive Regulator -CCOMP CAPACITOR: For improved ripple rejection, -Ccomp can be bypassed to ground with a 10F tantalum capacitor. This bypass capacitor will provide 66dB ripple rejection. Increased capacitance above 10F does not improve the ripple rejection at frequencies above 120Hz. If the Ccomp bypass capacitor is used, it may be necessary to add a protection diode to protect the regulator from capacitor discharge damage. See Typical Applications Circuit for clarification. If the bypass capacitor is not used, it should be left open since it is internally connected to the regulator. 1.) Assume 45 heat spreading model. 2.) Find positive regulator power dissipation: Pd = (Vin - Vout)(Iout) Pd = (+8V-5V)(0.5A) Pd = 1.5W 3.) For conservative design, set Tj = +125C Max. 4.) For this example, worst case Ta = +85C. 5.) Rjc = 10.5C/W from the Electrical Specification Table. 6.) Rcs = 0.15C/W for most thermal greases. 7.) Rearrange governing equation to solve for Rsa: Rsa= ((Tj - Ta)/Pd) - (Rjc) - (Rcs) = (125C-85C)/1.5W - 13.5C/W - 0.15C/W = 13.0C/W The same exercise must be performed for the negative regulator. 3 PRELIMINARY Rev. 6/06 TYPICAL PERFORMANCE CURVES 4 PRELIMINARY Rev. - 6/06 MECHANICAL SPECIFICATIONS MSK521X Weight=4.3 Grams Typical NOTE: ALL DIMENSIONS ARE 0.010 INCHES UNLESS OTHERWISE LABELED. ESD Triangle indicates pin 1. ORDERING INFORMATION Part Number MSK521X MSK521XH MSK521XE Screening Level Industrial MIL-PRF-38534 CLASS H EXTENDED RELIABILITY X - Designates voltage selection (MSK 5211-5214) 5 PRELIMINARY Rev. - 6/06 MECHANICAL SPECIFICATIONS CONTINUED MSK521XG Weight=4.2 Grams Typical NOTE: ALL DIMENSIONS ARE 0.010 INCHES UNLESS OTHERWISE LABELED. ESD Triangle indicates pin 1. ORDERING INFORMATION Part Number MSK521XG MSK521XHG MSK521XEG Screening Level Industrial MIL-PRF-38534 CLASS H EXTENDED RELIABILITY X - Designates voltage selection (MSK 5211-5214) M.S. Kennedy Corp. 4707 Dey Road, Liverpool, New York 13088 Phone (315) 701-6751 Fax (315) 701-6752 www.mskennedy.com The information contained herein is believed to be accurate at the time of printing. MSK reserves the right to make changes to its products or specifications without notice, however and assumes no liability for the use of its products. Please visit our website for the most recent revision of this datasheet. Contact MSK for MIL-PRF-38534 Class H qualification status. 6 PRELIMINARY Rev. - 6/06 |
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