Intersil new regulator extends battery life
Wednesday, January 12th, 2011California, MILPITAS — 2011 , 1 ,11 - the global high-performance analog mixed-signal semiconductor design and manufacturing leader Intersil Corporation (Nasdaq Global Select Market under the trading symbol: ISIL) today announced that its popular dual-channel integrated FET buck regulator product family to extend the introduction of three series to provide the highest power conversion efficiency of 95% to provide greater flexibility to designers of new products: ISL8022, ISL8033 / A and the ISL8036 / A .
New ISL8022, ISL8033 / A and the ISL8036 / A buck regulator quiescent current is only 40uA, input voltage range of 2.85V-6V, which makes them a single lithium-ion battery, three Ni-MH battery or DC input 3V/5V ideal voltage applications Inspiron 6000 Inspiron 640M .
ISL8033 / A and the ISL8036 / A is a dual-channel step-down DC / DC regulator that provides the maximum 3A per channel continuous output current; ISL8022 for lower current application provides similar functionality, the two channels the maximum continuous output current 2A, respectively, and 1.7A. This family is characterized by the three peak current mode, support for ultra-low duty cycle operation fixed frequency control architecture, excellent loop stability and fast load transient response. Fast load transient response to reduce the required output capacitance, with the traditional voltage mode control architecture to support smaller than the total solution size. ISL8033 / A, ISL8036 / A and the ISL8022 dual-channel conversion in the phase shift of 180 degrees, reducing the input ripple current and filter requirements. Internal loop compensation of the external components further reducing the number and cost Inspiron 6400 Inspiron 910 .
ISL8033 and ISL8036 provides a fixed 1MHz switching frequency, ISL8033A and ISL8036A the switching frequency of 2.5MHz, can significantly reduce the DC / DC converter’s total size. ISL8033 and ISL8036 can also work with the maximum clock frequency of 6MHz external clock synchronization, which further reduces total solution size and the elimination of multi-switch design of the beat frequency. For the two channels can be independently enabled and started the PGOOD pin provides control and monitoring inherent in the output, eliminating the need for discrete sequencing and voltage monitoring circuits.
In addition to other independent input current 3A, ISL8036 / A in the two-channel can also be paralleled for higher power applications in the current sharing mode, a single-channel 6A. ISL8033 / A provided to the user on each channel over-current threshold point of programming flexibility, allowing the 3A/2A or 2A/2A configuration using the integrated circuit to support a variety of load conditions. The built-in power MOSFET is optimized to support input voltages as low as 0.8V, while providing high conversion efficiency Inspiron 9300 Inspiron 9400 .
ISL8022 provide optional forced-PWM mode or PWM / PFM automatic mode, to optimize the portable and handheld applications, the battery life. Low 40uA quiescent current makes the ISL8022 ideal for battery-powered and other “green power” applications of choice.
ISL8022 work in 2.25MHz fixed switching frequency allows designers to use small, inexpensive inductors and capacitors. Similar with ISL8036, ISL8022 can also work with the maximum clock frequency of 8MHz external clock synchronization, which further reduces total solution size and the elimination of multi-switch design of the beat frequency. The built-in power MOSFET is optimized to support input voltages as low as 0.6V, while providing high conversion efficiency Inspiron B130 Inspiron E1405 .
