Ultra-Low-Noise, Low-Dropout, 150mA Linear Regulators Are Ideal for Space-Constrained Designs
SUNNYVALE, CA—February 28, 2007—Maxim Integrated Products (NASDAQ: MXIM) introduces the MAX8840/MAX8841/MAX8842 ultra-low-noise, low-dropout (LDO), 150mA linear regulators. These devices are available in a tiny 1mm x 1.5mm x 0.8mm µDFN package that enables a total solution size as small as 3.9mm2, including external components. This compact solution is ideal for space-constrained designs, such as cell phones, smartphones, PDAs, and notebook PCs.
The MAX8840/MAX8841/MAX8842 operate from a 2V to 6V supply, making them optimal for single-cell, Li+ battery-powered applications. Battery time is maximized due to extremely low ground-pin current (40µA, typ in operation, 50nA, typ in shutdown). With only 11µVRMS of output noise (100Hz, typ) and 78dB PSRR (1kHz, typ), the MAX8840 is perfect for powering circuits that require a low-noise supply, such as RF, cell-phone cameras, and PA bias supplies. The MAX8841 has the smallest overall footprint, as it does not need a bypass capacitor, thus making it ideal for core, logic, and memory power-supply applications.
The MAX8840/MAX8841 support fixed output voltages of 1.5V, 1.8V, 2.5V, 2.6V, 2.7V, 2.8V, 2.85V, 3.0V, 3.3V, and 4.5V. The MAX8842 allows any voltage between 1.225V and 4.5V to be programmed with a simple resistor-divider. Refer to the data sheet or contact the factory for information about other voltage options.
Other MAX8840/MAX8841/MAX8842 features include an active-low shutdown-control pin, overcurrent and thermal protection, and operation over the extended temperature range (-40°C to +85°C). All devices are available in lead-free, 1mm x 1.5mm x 0.8mm µDFN packages. Pricing starts at $0.54 (2500-up, FOB USA).
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