LM25010Q0MH NSC [National Semiconductor], LM25010Q0MH Datasheet
LM25010Q0MH
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LM25010Q0MH Summary of contents
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LM25010/LM25010Q 42V, 1.0A Step-Down Switching Regulator General Description The LM25010 features all the functions needed to implement a low cost, efficient, buck regulator capable of supplying in excess of 1A load current. This high voltage regulator inte- grates an N-Channel ...
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... LM25010Q1MHX TSSOP-14EP LM25010Q0MH TSSOP-14EP LM25010Q0MHX TSSOP-14EP *Automotive Grade (Q) product incorporates enhanced manufacturing and support processes for the automotive market, including defect detection methodologies. Reliability qualification is compliant with the requirements and temperature grades defined in the AEC-Q100 standard. Automotive grade products are identified with the letter Q ...
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Pin Descriptions Pin Number Name LLP-10 TSSOP- BST 3 4 ISEN 4 5 SGND 5 6 RTN RON/ VCC 10 13 VIN 1,7,8, ...
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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. VIN to RTN BST to RTN SW to RTN (Steady State) BST to VCC BST to SW VCC to ...
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Symbol Parameter Off Timer t Minimum Off-time OFF Regulation and Over-Voltage Comparators (FB Pin regulation threshold REF FB over-voltage threshold FB bias current Thermal Shutdown T Thermal shutdown temperature SD Thermal shutdown hysteresis Thermal Resistance θ Junction to ...
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Typical Performance Characteristics Externally Applied V CC Voltage at RON/SD Pin www.national.com IN 20172704 CC 20172706 20172708 20172705 On-Time vs V and 20172707 I vs ...
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Block Diagram 7 20172744 www.national.com ...
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Functional Description The LM25010 Step-Down Switching Regulator features all the functions needed to implement a low cost, efficient buck DC-DC converter capable of supplying in excess the load. This high voltage regulator integrates an N-Channel buck switch, ...
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The LM25010 operates in continuous conduction mode at heavy load currents, and discontinuous conduction mode at light load currents. In continuous conduction mode current al- ways flows through the inductor, never decaying to zero during the off-time. In this mode ...
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Over-Voltage Comparator The feedback voltage compared to an internal 2.9V reference. If the voltage at FB rises above 2.9V the on-time is immediately terminated. This condition can occur if the in- put voltage, or the output load, ...
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FIGURE 4. Inductor Current - Current Limit Operation N - Channel Buck Switch and Driver The LM25010 integrates an N-Channel buck switch and as- sociated floating high voltage gate driver. The peak current through the buck switch should not exceed ...
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To keep the circuit in continuous conduction mode, the max- imum allowed ripple current is twice the minimum load cur- rent, or 400 mAp-p. Using this value of ripple current, the inductor (L1) is calculated using the following: where F ...
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C3: The capacitor at the VCC pin provides noise filtering and stability, prevents false triggering of the V switch on/off transitions, and limits the peak voltage at V when a high voltage with a short rise time is initially applied ...
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Item C4 FIGURE 7. Efficiency vs Load Current and V Circuit of Figure 6 FIGURE 8. Frequency vs V Circuit of Figure 6 MINIMUM LOAD CURRENT The ...
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Cff and reducing R3 to 0.75Ω, the V ripple was reduced by 50%, ranging from 25 mVp-p to OUT 142 mVp-p. FIGURE 11. Low Output Ripple Using Ripple Injection To reduce V ripple further, the circuit ...
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Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 14-Lead TSSOP Package NS Package Number MXA14A 10-Lead LLP Package NS Package Number SDC10A 16 ...
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Notes 17 www.national.com ...
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