A8450KLB Allegro Microsystems Inc, A8450KLB Datasheet
A8450KLB
Specifications of A8450KLB
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A8450KLB Summary of contents
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Features and Benefits ▪ input range ▪ DC-to-DC buck converter with 5.7 V output ▪ Overcurrent protection with foldback, and undervoltage lockout (UVLO) ▪ Dual 5 V outputs ▫ Digital 5 V ±2%, 200 mA ...
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... A8450KLBTR* – 1000 pieces per 13-in. reel A8450KLBTR-T Yes *Variant is in production but has been determined to be NOT FOR NEW DESIGN. This classification indicates that sale of the variant is currently restricted to existing customer applications. The variant should not be purchased for new design applications because obsolescence in the near future is probable ...
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A8450 C8 High Voltage Switch CP1 CP2 VREG11 C10 Charge Pump CPOK ENBAT High V Protection ENB NPOR CPOR Adjustable Delay C9 POR Block NFAULT GND Fault ID C1, C2, C3 μ ceramic X7R COUT 100 ...
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A8450 ELECTRICAL CHARACTERISTICS Characteristics Supply Quiescent Current Regulated Output Voltage Buck Switch On-Resistance Buck Switch Current Limit DC-to-DC Fixed Off-Time Soft Start Time Logic Inputs ENBAT Logic Input Voltage ENBAT Input Current ENB Logic Input Voltage ENB Input Current * ...
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A8450 ELECTRICAL CHARACTERISTICS (continued) otherwise noted Characteristics Protection NFAULT, NPOR Output Voltage NFAULT, NPOR Leakage Current POR Delay V33 Undervoltage Threshold V33 Hysteresis V5A, V5D Undervoltage Threshold V5A, V5D Hysteresis VADJ Undervoltage Threshold VADJ Hysteresis VADJ, V33 Overcurrent Threshold VREG ...
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A8450 V REG V OUTV33 V OUTVADJ V NPOR Slope of V OUTV33 Figure 1a. NPOR fault due to undervoltage lockout on the V33 or FB pins V V REG V OUTV33 VREG Monitor V OUTVADJ V ENBAT V ENB ...
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A8450 LOAD 10% t RISE t (0.2 μs/Div.) V5D Regulator t (50 μs/Div.) V5A Regulator t (50 μs/Div.) Automotive Multioutput Voltage Regulator Load Transients Diagrams = 100 mA 25°C; ac-coupled; C1, ...
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A8450 Buck Converter with Switching Regulator. A current- mode, variable frequency buck DC-to-DC converter and switch- ing regulator are integrated in the A8450, as shown in figure 2. This feature allows the device to efficiently handle power over a wide ...
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A8450 mA, as shown in figure 4a. The voltage recovers to its regulated output when the short is removed. The V5A and V5D regulators track each other during power-on, and when the device is enabled ...
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A8450 low, ENB acts as a single reset control. Diagnostics. An open drain output, through the NFAULT pin, is pulled low to signal to a DSP or microcontroller any of the follow- ing fault conditions: • V5A, the 5 V ...
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A8450 Component Selection This inductor must be rated to handle the Output Inductor (L1). total load current addition, the value chosen must keep LOAD the ripple current to a reasonable level. A typical selection is a power ...
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A8450 mended, with a minimum voltage rating However, because ESR decreases with voltage, the most cost-effective choice may be a capacitor with a higher voltage rating. Regulator Output Capacitors (C3 and C4). The output capacitors used with ...
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A8450 P can be used to estimate the minimum required operating D temperature rating for the transistor. The ability of a package to dissipate heat is approximated by the thermal resistance from the die (junction) to the ambient environment, R ...
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A8450 Test results for this 24-lead SOIC are approximately 35 °C/W when mounted on a high-thermally conductive PCB (based on the JEDEC standard PCB, having four layers with buried copper areas). The total power that can be applied to the ...
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A8450 Terminal List Table Name VBB CP2 CP1 VCP VREG11 GND GND ENB CPOR CLADJ VADJBD FB V5A NPOR NFAULT V5D VREG GND GND CL33 V33BD V33 ENBAT LX Automotive Multioutput Voltage Regulator Pin-Out Diagram Buck VBB 1 Converter CP2 ...
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A8450 15.40±0. 24X 0.10 C 0.41 ±0.10 1.27 For reference only Pins 6 and 7, and 18 and 19 internally fused Dimensions in millimeters (Reference JEDEC MS-013 AD) Dimensions exclusive of mold flash, gate burrs, and ...