Electronic Technology Corporation Introduces CMOS Switch-Mode Power Supply Controllers.SAN JOSE San Jose, city, United States San Jose (sănəzā`, săn hōzā`), city (1990 pop. 782,248), seat of Santa Clara co., W central Calif.; founded 1777, inc. 1850. , Calif.--(BUSINESS WIRE)--Nov. 10, 1999-- Electronic Technology Corporation announces the introduction of a family of Switch-Mode Power Supply (SMPS SMPS Society for Marketing Professional Services SMPS Switching Mode Power Supply SMPS Switched Mode Power Supply ) Controllers. The seven-member family offers high accuracy of +/- 2.5% and typical supply current of 20 to 80 uA in space-saving packages. The series includes standard voltages of 3.3V and 5.0V, and the capability to customize to any voltage from 2.0V to 7.0V in 0.1V increments. Switch-mode power supplies periodically store energy in a magnetic field using a current from the primary supply to charge an inductor inductor, electric device consisting of one or more turns of wire and typically having two terminals. An inductor is usually connected into a circuit in order to raise the inductance to a desired value. , and then releasing that energy into the load. A capacitor capacitor or condenser, device for the storage of electric charge. Simple capacitors consist of two plates made of an electrically conducting material (e.g., a metal) and separated by a nonconducting material or dielectric (e.g. is placed across the load to hold the voltage relatively constant. ETC's family offers 80-90% efficiency across a wide range of current requirements via Pulse Width Modulation See PWM. (PWM (Pulse Width Modulation) A modulation technique that generates variable-width pulses to represent the amplitude of an analog input signal. Like its fixed-width pulse density modulation (PDM) cousin, the output switching transistor is on more of the time for a ) for higher loads, Pulse Frequency Modulation frequency modulation: see modulation; radio. (1) An earlier magnetic disk encoding method that places clock bits onto the medium along with the data bits. It was superseded by MFM and RLL. (PFM) for lower loads, and a unique dual mode PWM/PFM device that automatically switches modes based on load requirements. The family also offers step-up and step-down as well as internal and external switch configurations. SMPS are commonly used for distributed power in multivoltage systems, as well as for high efficiency requirements in battery-operated pagers, cell phones, PDAs, GPS terminals. "Our SMPS controller family continues our product line expansion in Power Management. Our customers are particularly excited about the dual mode ETC ETC - ExTendible Compiler. Fortran-like, macro extendible. "ETC - An Extendible Macro-Based Compiler", B.N. Dickman, Proc SJCC 38 (1971). 4380/1 devices which offer great performance in both standby and active modes of PDAs and similar battery operated gear," said Bernard Brafman, ETC's Vice President of Sales and Marketing. -0-
P/N1 Step Switch Switch Output Supply Fre- Package 1000s
Up/Down Mode Current2 Current quency Price
---- ------- ------ ------- -------- ------- ------- ------- -----
ETC-
4375C-XX Step PWM External 25uA 100KHz SOT89-5 $1.17
Down
ETC-
4370A-XX Step Up PWM Internal 100mA 80uA 180KHz SOT89-5 $0.97
ETC-
4371A-XX Step Up PWM External 80uA 180KHz SOT89-5 $0.97
ETC-
4380A-XX Step Up PWM/ Internal 100mA 80uA 180KHz SOT89-5 $1.25
PFM
ETC-
4381A-XX Step Up PWM/ External 80uA 180KHz SOT89-5 $1.25
PFM
ETC-
4390A-XX Step Up PFM Internal 50/ 20uA 100/ SOT23-5 $1.12
100 mA 180kHz /SOT89-5
ETC-
4390A-XX Step Up PFM External 20uA 100/ SOT23-5 $1.12
180kHz /SOT89-5
Notes: 1. XX is output voltage (standard 33 = 3.3V, 50 = 5.0V)
2. Output current listed for internal switch devices only.
Output current for external switch devices depends on switch selection
-0-
Electronic Technology Corporation is an ISO (1) See ISO speed. (2) (International Organization for Standardization, Geneva, Switzerland, www.iso.ch) An organization that sets international standards, founded in 1946. The U.S. member body is ANSI. 9001 and QS-9000 registered manufacturer of power management ICs and mixed signal ASICs. More information can be obtained at www.etechcorp.com. |
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