 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| MIL-PRF-38534 CERTIFIED M.S.KENNEDY CORP. FEATURES: VERY HIGH CURRENT, LOW DROPOUT VOLTAGE REGULATORS 5151 SERIES (315) 701-6751 4707 Dey Road Liverpool, N.Y. 13088 Electrically Isolated Top Tab or Z Tab SIP Extremely Low Dropout Voltage: 370mV @ 5 Amps Available in +1.5V,+1.7V,+1.9V,+2.5V,+3.3V,+5.0V and +12.0V TTL Level Enable Pin: Zero Current Shutdown Mode Reverse Battery and Load Dump Protection Low Ground Current: 80mA Typical at Full Load 1% Maximum Guaranteed Accuracy Output Current to 5 Amps Contact MSK for MIL-PRF-38534 Qualification Status DESCRIPTION: The MSK 5151 series voltage regulators are available in +1.5V,+1.7V,+1.9V,+2.5V,+3.3V,+5.0V and +12.0V configurations. All boast ultra low dropout specifications due to the utilization of a super PNP output pass transistor with monolithic technology. Dropout voltages of 370mV at 5 amps are typical in this configuration, which drives efficiency up and power dissipation down. Accuracy is guaranteed with a 1% maximum output voltage tolerance. The series also offers a TTL/CMOS compatible on/off enable function. The MSK 5151 series is packaged in a space efficient 5 pin power SIP available in two styles with three lead bend options. EQUIVALENT SCHEMATIC TYPICAL APPLICATIONS High Efficiency, Very High Current Linear Regulators Constant Voltage/Current Regulators System Power Supplies Switching Power Supply Post Regulators Battery Powered Equipment 1 PIN-OUT INFORMATION 1 2 3 4 5 Enable Vin Ground Vout NC Rev. A 1/06 ABSOLUTE MAXIMUM RATINGS VINP VIN VEN IOUT 9 TJ ELECTRICAL SPECIFICATIONS Parameter Test Conditions 1 3 Group A MSK 5151H/E SERIES Subgroup 1 Output Voltage Tolerance 2 MSK 5151 SERIES Min. 2.4 Typ. 0.5 125 370 0.2 0.3 0.05 0.5 7.5 25 80 400 1.2 1.2 100 10 1.1 135 Max. 1.0 275 625 1.2 0.6 10 65 0.8 600 2 500 1.7 Units % % mV mV % % % % A mA mA V V V A A A C/W C Min. 2.4 - Typ. 0.5 1.0 125 370 0.2 0.3 0.05 0.5 7.5 25 80 400 1.2 1.2 100 10 1.1 135 Max. 1.0 2.0 250 600 1.0 2.0 0.5 1.0 10 60 0.8 600 2 500 1.5 - IOUT=10mA; VIN=VOUT+1V 2,3 VOUT=-1%; IOUT=250m A VOUT=-1%; IOUT=5A VIN=VOUT+1V 10mA IOUT 4.5A (VOUT +1V) VIN 26V IOUT=10mA 1 1 1 2,3 1 2,3 1 1 1 1 - Dropout Voltage 2 Load Regulation 8 Line Regulation Output Current Limit 2 Ground Current Output Noise 2 2 VOUT=0V; VIN=VOUT+1V VIN=VOUT+1V; IOUT=2.5A VIN=VOUT+1V; IOUT=5A CL=20F; 10Hz f 100KHz HIGH/ON LOW/OFF Enable Input Voltage 2 Enable Input Current 2 Shutdown Output Current 2 Thermal Resistance 2 Thermal Shutdown 2 HIGH/ON LOW/OFF VENABLE 0.8V Junction to Case @125C TJ NOTES: 1 Output decoupled to ground using 33F minimum capacitance unless otherwise specified. 2 This parameter is guaranteed by design but need not be tested. Typical parameters are representative of actual device performance but are for reference only. 3 All output parameters are tested using a low duty cycle pulse to maintain TJ = TC. 4 Industrial grade and "E" suffix devices shall be tested to subgroup 1 unless otherwise specified. 5 Military grade devices ('H' suffix) shall be 100% tested to subgroups 1,2 and 3. 6 Subgroup 1 TC=+25C Subgroup 2 TJ=+125C Subgroup 3 TA=-55C 7 Please consult the factory if alternate output voltages are required. 8 Due to current limit, maximum output current may not be available at all values of VIN-VOUT and temperatures. See typical performance curves for clarification. 9 Continuous operation at or above absolute maximum ratings may adversely effect the device performance and/or life cycle. 2 Rev. A Input Voltage (100mS 1%D.C.) -20V to +60V Input Voltage 26V Enable Voltage -0.3V to 26V Output Current 5.5A TST TLD Storage Temperature Range -65C to +150C Lead Temperature 300C (10 Seconds Soldering) Operating Temperature MSK 5151 Series -40C to +85C MSK 5151H/E Series -55C to +125C 1/06 APPLICATION NOTES REGULATOR PROTECTION: The MSK 5151 series is fully protected against reversed input polarity, overcurrent faults, overtemperature conditions (Pd) and transient voltage spikes of up to 60V. If the regulator is used in dual supply systems where the load is returned to a negative supply, the output voltage must be diode clamped to ground. HEAT SINK SELECTION: To select a heat sink for the MSK 5151, the following formula for convective heat flow may be used. 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 Ta = Ambient Temperature First, the power dissipation must be calculated as follows: Power Dissipation = (Vin - Vout) x Iout Next, the user must select a maximum junction temperature. The absolute maximum allowable junction temperature is 125C. The equation may now be rearranged to solve for the required heat sink to ambient thermal resistance (Rsa). EXAMPLE: An MSK 5151-3.3 is configured for Vin=+5V and Vout=+3.3V. Iout is a continuous 1A DC level. The ambient temperature is +25C. The maximum desired junction temperature is 125C. Rjc = 1.5C/W and Rcs = 0.15C/W for most thermal greases Power Dissipation= (5V - 3.3V) x (1A) = 1.7 Watts Solve for Rsa: Rsa = 125C - 25C - 1.5C/W - 0.15C/W 1.7W = 57.17C/W In this example, a heat sink with a thermal resistance of no more than 57C/W must be used to maintain a junction temperature of no more than 125C. OUTPUT CAPACITOR: The output voltage ripple of the MSK 5151 series voltage regulators can be minimized by placing a filter capacitor from the output to ground. The optimum value for this capacitor may vary from one application to the next, but a minimum of 20F is recommended for optimum performance. This capacitor need not be an expensive low ESR type: aluminum electrolytics are adequate. In fact, extremely low ESR capacitors may contribute to instability. Tantalum capacitors are recommended for systems where fast load transient response is important. Transient load response can also be improved by placing a capacitor directly across the load. LOAD CONNECTIONS: In voltage regulator applications where very large load currents are present, the load connection is very important. The path connecting the output of the regulator to the load must be extremely low impedance to avoid affecting the load regulation specifications. Any impedance in this path will form a voltage divider with the load. ENABLE PIN: The MSK 5151 series of voltage regulators are equipped with a TTL compatible ENABLE pin. A TTL high level on this pin activates the internal bias circuit and powers up the device. A TTL low level on this pin places the controller in shutdown mode and the device draws approximately 10A of quiescent current. If the enable function is not used, simply connect the enable pin to the input. DEVICE/CASE CONNECTION: The MSK 5151 series are highly thermally conductive devices and the thermal path from the package heat sink to the internal junctions is very short. Since the case is electrically isolated from the internal circuitry, the package can be directly connected to a heat sink. 3 Rev. A 1/06 TYPICAL PERFORMANCE CURVES 4 Rev. A 1/06 MECHANICAL SPECIFICATIONS NOTE: ALL DIMENSIONS ARE 0.010 INCHES UNLESS OTHERWISE LABELED. ESD Triangle indicates Pin 1. ORDERING INFORMATION MSK5151-3.3 H T U LEAD CONFIGURATIONS S= STRAIGHT; U= BENT UP; D= BENT DOWN PACKAGE STYLE T= TOP TAB; Z= Z PACK SCREENING BLANK= INDUSTRIAL; E=EXTENDED RELIABILITY H=MIL-PRF 38534 CLASS H OUTPUT VOLTAGE 1.5=+1.5V; 1.7=+1.7V; 1.9=+1.9V; 2.5=+2.5V; 3.3=+3.3V; 5.0=+5.0V; 12=+12.0V GENERAL PART NUMBER The above example is a +3.3V, Military regulator using the top tab package with leads bent up. 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 qualification status. 5 Rev. A 1/06 |
Price & Availability of MSK5151-1HTS
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |