ISL6441 is a high -performance three -output controller to convert the voltage required by various applications of the intermediate bus of the system power supply to the wall adapter, battery or network. Each output can be lowered to 0.8V. Two PWM synchronization 180o alien reduction RMS input current and ripple voltage. ISL6441 has a variety of protection functions. A adjustable over -current protection circuit monitoring output The current MOSFET generated by the lower voltage of the lower part. HICCUP mode overload/DC component overload/short -circuit conditions during the output of current operation protection output. Each pulse width modulation has an independent logic level off input (SD1 and SD2). When the soft startup is completed, a PGOON signal is issued on the two PWM controllers. Their output is 75%of the setting value and linear regulator output. The device that turns off the connector when the connector is turned off by the hot shutdown circuit.

Features

Wide input power supply voltage range -5.6 volts to 24 volts -4.5 volts to 5.6 volts

Three independent programming output voltage

Switch frequency. 1.4 Mongolian

Out of phase PWM controller operation-Reduce the required input capacitance and power supply induction load

No external current response resistor-use lower MOSFET RDS (open) [open) [open) [open) [open) [open) 123]

Multiple ISL6441S

Available soft startup of two-way frequency synchronization

Wide circuit protection function Independent shutdown

Excellent dynamic response-current mode control voltage feedback

QFN package: -QFN-conforms to JEDEC PUB95 MO-220QFN-four-level plane without lead-packaging shape-close to chip size The packaging of the printing circuit board is improved, and the shape is thinner

Provides lead -free and annealing (in line with ROHS)

Application

Multiple output power supply

XDSL modem/router

DSP, ASIC and FPGA power supply

set -top box

dual output power supply, for digital signal processor, memory, logic, μP nuclear and I/O/O/O

Telecom system

Absolutely maximum rated heat information

Power voltage (VCC_5V pin). -0.3V to+7V

Input voltage (vehicle identification number pin). +27 volts

Boot1, 2 and Ugate1, 2. +35 volts

stage 1,2 and Isen1, 2. +27 volts

Boot1, 2 relative to phase 1,2. +6.5 volts

Ugate1, 2. (1 phase, 2-0.3v) to (BOOT1, 2+0.3V)

Thermal resistance (typical value) θja (degrees Celsius/tile) θjc (degrees Celsius/watt)

28 guide Lianqfn (Note 1). 36 5.5

The highest connection temperature (plastic packaging). -55 ° C to 150 ° C

The highest storage temperature range. -65 ° C to 150 ° C

The temperature range. -40 ° C to 85 ° C

Note: The stress listed in the absolute maximum rated value " may cause permanent damage to the device. This is a stress level and operation

The above conditions described in the operating chapter of this specification or the device under any other conditions are not hidden.

Note:

1.θjc is measured in free air