LM25010EVAL National Semiconductor, LM25010EVAL Datasheet
LM25010EVAL
Specifications of LM25010EVAL
Related parts for LM25010EVAL
LM25010EVAL Summary of contents
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... Additional fea- tures include: VCC under-voltage lock-out, thermal shutdown, gate drive under-voltage lock-out, and maximum duty cycle limiter. Basic Step-Down Regulator © 2008 National Semiconductor Corporation Features ■ Wide 6V to 42V Input Voltage Range ■ ...
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Connection Diagrams Ordering Information Order Number Package Type LM25010SD LLP-10 (4x4) LM25010SDX LLP-10 (4x4) LM25010MH TSSOP-14EP LM25010MHX TSSOP-14EP LM25010Q1MH TSSOP-14EP LM25010Q1MHX TSSOP-14EP LM25010Q0MH TSSOP-14EP LM25010Q0MHX TSSOP-14EP *Automotive Grade (Q) product incorporates enhanced manufacturing and support processes for the automotive market, ...
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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 RTN SGND to RTN SS to RTN Electrical Charateristics over the full Operating Junction Temperature (T statistical correlation ...
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... Device thermal limitations limit external loading. CC Note 4: For detailed information on soldering plastic TSSOP and LLP packages refer to the Packaging Data Book available from National Semiconductor Corporation. Note 5: Typical specifications represent the most likely parametric norm at 25°C operation. ...
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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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