LM5025AMTCX/NOPB National Semiconductor, LM5025AMTCX/NOPB Datasheet
LM5025AMTCX/NOPB
Specifications of LM5025AMTCX/NOPB
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LM5025AMTCX/NOPB Summary of contents
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... Additional features include: Line Under Voltage Lockout (UVLO), softstart, oscillator UP/DOWN sync capability, pre- cision reference and thermal shutdown. Typical Application Circuit © 2010 National Semiconductor Corporation LM5025A Features ■ Internal Start-up Bias Regulator ■ ...
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Connection Diagram Ordering Information Order Number Package Type LM5025AMTC TSSOP-16 LM5025AMTCX TSSOP-16 LM5025ASD LLP-16 LM5025ASDX LLP-16 Pin Description Pin Name 1 V Source Input Voltage IN 2 RAMP Modulator ramp signal 3 CS1 Current sense input for cycle-by-cycle limiting If ...
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Pin Name 7 V Output from the internal high voltage start-up CC regulator. The V 8 OUT_A Main output driver 9 OUT_B Active Clamp output driver 10 PGND Power ground 11 AGND Analog ground 12 SS Soft-start control 13 COMP ...
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Block Diagram www.national.com Simplified Block Diagram 4 20107402 ...
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... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications GND GND CC CS1, CS2 to GND All other inputs to GND ESD Rating (Note 2) Electrical Characteristics Specifications with standard typeface are for T perature range 48V 10V 31.3kΩ ...
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Symbol Parameter Soft-Start Soft-start Current Source Normal Soft-start Current Source following a CS2 event Oscillator Frequency1 Frequency2 Sync threshold Min Sync Pulse Width Sync Frequency Range PWM Comparator Delay to Output Duty Cycle Range COMP to PWM Offset COMP Open ...
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... Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which operation of the device is intended to be functional. For guaranteed specifications and test conditions, see the Electrical Characteristics. Note 2: For detailed information on soldering plastic TSSOP and LLP packages, refer to the Packaging Data Book available from National Semiconductor Corporation. ...
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Overlap Time vs R Dead Time Pin Current vs Temperature www.national.com SET 20107407 SET 20107409 20107411 8 Overlap Time vs Temperature R = 38K SET 20107408 Dead Time vs Temperature R = 29.5K SET 20107410 ...
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Detailed Operating Description The LM5025A is a functional variant of the LM5025 active clamp PWM controller. The functional differences of the LM5025A are: The CS1 and CS2 current limit thresholds have been in- creased to 0.5V. The internal CS2 filter ...
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Compound Gate Drivers The LM5025A contains two unique compound gate drivers, which parallel both MOS and Bipolar devices to provide high drive current throughout the entire switching event. The Bipo- lar device provides most of the drive current capability and ...
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SS capacitor protects a continuously over-load- ed converter with a low duty cycle hiccup mode. These two modes of over-current protection allow the user great flexibility to configure the system behavior in over-load conditions desired ...
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Soft-Start The softstart feature allows the power converter to gradually reach the initial steady state operating point, thus reducing start-up stresses and surges. At power on, a 20µA current is sourced out of the softstart pin (SS) into an external ...
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Application Circuit: Input 36-78V, Output 3.3V, 30A 13 www.national.com ...
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Physical Dimensions Note recommended that the exposed pad be connected to Pin 11 (AGND) www.national.com inches (millimeters) unless otherwise noted Molded TSSOP-16 NS Package Number MTC16 16-Lead LLP Surface Mount Package NS Package Number SDA16A 14 ...
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Notes 15 www.national.com ...
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