lm27222sd National Semiconductor Corporation, lm27222sd Datasheet
lm27222sd
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lm27222sd Summary of contents
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... To support low power states in notebook systems, the LM27222 draws only 5µA from the 5V rail when the IN and LEN inputs are low or floating. Typical Application © 2006 National Semiconductor Corporation Features n Adaptive shoot-through protection n 10ns dead time n 8ns propagation delay n 30ns minimum on-time n 0.4Ω ...
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... Ordering Information Order Number Size NSC Drawing # LM27222M SO-8 LM27222MX LM27222SD LLP-8 LM27222SDX Pin Descriptions Pin # Pin Name 1 SW High-side driver return. Should be connected to the common node of high and low-side MOSFETs High-side gate drive output. Should be connected to the high-side MOSFET gate. Pulled down internally to SW with a 10K resistor to prevent spurious turn on of the high-side MOSFET when the driver is off ...
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Block Diagram 20117903 3 www.national.com ...
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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 GND (Note 2) LEN, IN ...
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... LM27222M 165˚C/W. For θ for the LM27222SD is 42˚C/W. For JMAX Note 4: Min and Max limits are 100% production tested at 25˚C. Limits over the operating temperature range are guaranteed through correlation using Statistical Quality Control (SQC) methods. Limits are used to calculate National’ ...
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Typical Waveforms FIGURE 2. PWM Low-to-High Transition at IN Input The typical waveforms are from a circuit similar to Figure 1 with: Q1 Si7390DP Q2 Si7356DP L1: 0.4 µ 12V IN www.national.com 20117907 FIGURE ...
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Application Information GENERAL The LM27222 is designed for high speed and high operating reliability. The driver can handle very narrow, down to zero, PWM pulses in a guaranteed, deterministic way. Therefore, the HG and LG outputs are always in predictable ...
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Application Information POWER DISSIPATION The power dissipated in the driver IC when switching syn- chronously can be calculated as follows: where f = switching frequency voltage at the V pin total gate charge ...
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... Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 8-Lead Small Outline Package Order Number: LM27222M, LM27222MX NS Package Number M08A 8-Lead LLP Package Order Number: LM27222SD, LM27222SDX NS Package Number SDC08A 10 ...
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National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications. For the most current product information ...