ISL6440IAZ Intersil, ISL6440IAZ Datasheet
ISL6440IAZ
Specifications of ISL6440IAZ
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ISL6440IAZ Summary of contents
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... NUMBER MARKING ISL6440IA ISL6440IA ISL6440IAZ ISL6440IAZ (See Note) NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020 ...
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Typical Application Schematic D1 BAT54HT1 C3 10µF C7 0.1µF L1 VOUT1 6.4µH +1.8V 330µ FDS6990S 12.4K R4 10K 2 ISL6440 C2 4.7µF VIN VCC5 SS1 SS2 0.1µF BOOT1 BOOT2 23 ...
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Block Diagram BOOT1 UGATE1 PHASE1 ADAPTIVE DEAD-TIME DIODE EMULATION VCC_5V V/I SAMPLE TIMING LGATE1 PGND FB3 18.5pF 1400kΩ 180kΩ FB1 - 16kΩ 0.8V ERROR AMP 1 REF SS1 ISEN1 - CURRENT SAMPLE CURRENT + SAMPLE OCSET1 + 0.8V ...
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Absolute Maximum Ratings Supply Voltage (VCC_5V Pin -0.3V to +7V Input Voltage (VIN Pin ...
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Electrical Specifications Recommended operating conditions unless otherwise noted. Refer to Block Diagram and Typical Application Schematic. V Typical values are at T PARAMETER PWM CONTROLLER ERROR AMPLIFIERS DC Gain (Note 7) Gain-Bandwidth Product (Note 7) Slew Rate (Note 7) Maximum ...
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Typical Performance Curves (Oscilloscope Plots Are Taken Using the ISL6440EVAL1B Evaluation Board, VIN = 12V, Unless Otherwise Noted) 3.4 3.39 3.38 3.37 3.36 3.35 3.34 3.33 3.32 3.31 3.3 0 0.5 1 1.5 2 2.5 LOAD CURRENT (A) FIGURE 1. ...
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Typical Performance Curves (Oscilloscope Plots Are Taken Using the ISL6440EVAL1B Evaluation Board, VIN = 12V, Unless Otherwise Noted) V 200mV/DIV OUT1 AC COUPLED I 1A/DIV OUT1 FIGURE 7. LOAD TRANSIENT RESPONSE VOUT1 (3.3V) VCC_5V 1V/DIV V 1V/DIV OUT1 FIGURE 9. ...
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Pin Descriptions BOOT2, BOOT1 - These pins power the upper MOSFET drivers of each PWM converter. Connect this pin to the junction of the bootstrap capacitor and the cathode of the bootstrap diode. The anode of the bootstrap diode is ...
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Soft-Start Operation When soft-start is initiated, the voltage on the SS pin of the enabled PWM channels starts to ramp gradually, due to the 5µA current sourced into the external capacitor. The output voltage follows the soft-start voltage. When the ...
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Input Voltage Range The ISL6440 is designed to operate from input supplies ranging from 4.5V to 24V. However, the input voltage range can be effectively limited by the available maximum duty cycle (D = 93%). MAX ...
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Over-Temperature Protection The IC incorporates an over-temperature protection circuit that shuts the IC down when a die temperature of 150°C is reached. Normal operation resumes when the die temperatures drops below 130°C through the initiation of a full soft-start cycle. ...
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Careful component selection and proper PC board layout minimizes the magnitude of these voltage spikes. There are two sets of critical components in a DC/DC converter using the ISL6440. The switching power components and the small signal components. The ...
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The response time is the time interval required to slew the inductor current from an initial current value to the load current level. During this interval the difference between the inductor current and the transient current level must be supplied ...
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The combined out-of-phase current is the square root of the sum of the square of the individual reflected currents and is significantly less than the combined in-phase current PHASE 3.5 3 2.5 OUT ...
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... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use ...