Additional Information: Quick View Data Sheet for the MAX668 Samples and Literature Order Form Technical Support: PowerThe backplanes of popular multisupply buses (such as VME, VXI, an...

Abstract: To ensure correct operation, most microprocessor-based systems require supervision during power-up and power-down, and when entering or exiting shutdown or sleep mode. The supervisor may only provide a power-on reset, or it may o...

Additional Information: Quick View Data Sheet for the MAX668 Quick View Data Sheet for the MAX4130 Technical Support: Power...

Abstract: A step-up converter followed by an LDO regulator offers better battery life than a classic SEPIC design when operating from one lithium-ion cell. This is demonstrated with the MAX1800 multi-channel digital camera power IC for the...

Abstract: The MAX6652 temperature sensor combines voltage and overtemperature monitoring into a single integrated circuit. This device features an 8-bit analog-to-digital converter (ADC) for monitoring four window voltages with programmabl...

Abstract: Integrated communication systems incorporate voice service with data service. Such systems use subscriber-line interface card (SLIC) functions to maintain compatibility with legacy equipment. The voltages required in these system...

Abstract: This application note describes the use of current sense amplifiers, differential amplifiers and instrumentation amplifiers to measure battery charge and discharge currents in portable equipment, computer notebooks and USB access...

Abstract: Charge pumps are often the best choice for powering an application requiring a combination of low power and low cost. This article discusses the integrated charge pumps available in the market today. It also explains how to calcu...

Data terminal equipment (DTE), such as wireless LAN and wireless local loop, may require data and power on the same cable. A high voltage power source of 24V is required to reduce the voltage drop in the cable. Isolation is provide...

IP phones require that data and power on the same cable. A high voltage power source of 48V is required, to reduce the voltage drop in the cable. This application note describes a DC-DC step-up converter that can deliver the required 48V s...

Positive step-down switching regulators are common, but the complementary negative step-down function (converting a negative voltage to a smaller negative voltage) is rare by comparison. Figure 1 shows a negative step-down switchin...

Abstract: Vehicle electronics system components such as sensors and actuators require protection against over voltage, transient voltage and reverse voltage conditions. This application note discusses some discrete circuit protection schem...

Abstract: This article focuses on using an external MOSFET switch to ensure a valid system voltage is present before applying it to the load. This simple circuit uses a reset circuit and the MOSFET to provide a protection circuit during po...

Abstract: Using a temperature switch and fan driver IC along with a remote diode temperature switch provides thermal protection and simple fan drive functions for a system. This 2-chip circuit provides fan control, over-t...

Abstract: A linear circuit measures temperature and controls the speed of a cooling fan by generating a variable supply voltage for the fan. Fan noise is becoming a larger issue as more electronic equipment enters the off...

Abstract: The following application note discusses multiple solutions for sequencing power supplies and sequencing reset outputs. It discusses the advantage and disadvantages of using a discrete solution versus a more integrated solution. ...

Abstract: The following application note discusses a circuit that switches power sources efficiently without switching noise using the MAX6326. It discusses the advantages of using this technique over a simple diode-ord method. ...

The biasing of avalanche photodiodes (APDs), piezoelectric transducers (PZTs), vacuum fluorescent displays (VFDs), and microelectromechanical systems (MEMS) require high-voltage power supplies. This app note presents three topologies (Figu...

Abstract: Monocrystalline silicon pressure sensors have come into wide use in recent years. Though manufactured with semiconductor technology, they also operate on the resistive principle. The resistance change in a monocrystalline semicon...

Abstract: This article provides an in depth analysis, procedure, and selection tables for selecting the optimum series voltage reference for voltage output DACs. It covers all of the important parameters such as: input supply voltage, refe...