CAT661 Datasheet | onsemi

Description The CAT661 is a charge- pump voltage converter. It can invert a positive input voltage to a negative output. Only two external capacitors are needed. With a guaranteed 100 m A output current capability, the CAT661 can replace a switching regulator and its inductor. Lower EMI is achieved due to the absence of an inductor. In addition, the CAT661 can double a voltage supplied from a battery or power supply. Inputs from 2.5 V to 5.5 V will yield a doubled, 5 V to 11 V output. A Frequency Control pin (BOOST/FC) is provided to select either a high (typically 135 k Hz) or low (25 k Hz) internal oscillator frequency, thus allowing quiescent current vs. capacitor size trade- offs to be made. The 135 k Hz frequency is selected when the FC pin is connected to V+. The operating frequency can also be adjusted with an external capacitor at the OSC pin or by driving OSC with an external clock. 8- pin SOIC package is available. For die availability, contact ON Semiconductor marketing. The CAT661 can replace the MAX660 and the LTC660 in applications where higher oscillator frequency and smaller capacitors are needed. In addition, the CAT661 is pin patible with the 7660/1044, offering an easy upgrade for applications with 100 m A loads. Features - Converts V+ to V- or V+ to 2V+ - Low Output Resistance, 10 W Max. - High Power Efficiency - Selectable Charge Pump Frequency of 25 k Hz or 135 k Hz; Optimize Capacitor Size - Low Quiescent Current - Pin- patible to MAX660, LTC660 with Higher Frequency Operation - Available in 8- pin SOIC Package - These Devices are Pb- Free, Halogen Free/BFR Free and are Ro HS pliant Applications - Negative Voltage Generator - Voltage Doubler - Voltage Splitter - Low EMI Power Source - Ga As FET Biasing - Lithium Battery Power Supply - Instrumentation - LCD Contrast Bias - Cellular Phones, Pagers © Semiconductor ponents Industries, LLC, 2012 July, 2012 - Rev. 12 http://onsemi. SOIC- 8 V SUFFIX CASE 751BD PIN CONFIGURATION BOOST/FC V+ CAP+...