ISL6445IAZ-TK Intersil, ISL6445IAZ-TK Datasheet

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... Ordering Information BIAS PART NUMBER (Note) ISL6445IAZ* ISL 6445IAZ *Add “-TK” suffix for tape and reel. Please refer to TB347 for details on reel specifications. NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations) ...

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Typical Application Schematic D1 BAT54HT1 C3 10µF C7 0.1µF L1 VOUT1 3.2µH +1.8V 150µ FDS6912A 12.4k R4 10k 2 ISL6445 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 800kΩ 180kΩ FB1 - 16kΩ 0.8V ERROR AMP 1 REF SS1 ISEN1 - CURRENT SAMPLE CURRENT + SAMPLE OCSET1 + 0.8V ...

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... Maximum Junction Temperature (Plastic Package) -55°C to +150°C Maximum Storage Temperature Range . . . . . . . . . .-65°C to +150°C Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C Pb-Free Reflow Profile .see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp = 5.6V to 24V, or VCC5 = 5V ±10 +25°C. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise ...

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Electrical Specifications Recommended operating conditions unless otherwise noted. Refer to “Block Diagram” on page 3 and “Typical Application Schematic” on page 2. V are at T specified. Temperature limits established by characterization and are not production tested. (Continued) PARAMETER Minimum ...

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Typical Performance Curves 3.40 3.39 3.38 3.37 3.36 3.35 3.34 3.33 3.32 3.31 3.30 0 0.5 1.0 1.5 2.0 2.5 LOAD CURRENT (A) FIGURE 1. PWM1 LOAD REGULATION 0.85 0.84 0.83 0.82 0.81 0.80 0.79 0.78 0.77 0.76 0.75 -40 ...

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Typical Performance Curves V 200mV/DIV OUT1 AC COUPLED I 1A/DIV OUT1 FIGURE 7. LOAD TRANSIENT RESPONSE V VCC_5V 1V/DIV V 1V/DIV OUT1 FIGURE 9. PWM SOFT-START WAVEFORM 100 0.5 1.0 1.5 2.0 2.5 LOAD CURRENT (A) ...

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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 ISL6445 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 = 71%). 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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There are two sets of critical components in a DC/DC converter using the ISL6445. The switching power components and the small signal components. The switching power components are the most critical from a layout point of view because they switch ...

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+70° INPUT VOLTAGE (V) FIGURE 17. FET GATE CHARGE Output Capacitor Selection The output capacitors for each output have unique requirements. In general, the output capacitors ...

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Equation 15 – IN OUT OUT ΔI = --------------------------------------------------------- - ( ) ...

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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 ...