MAXIM Manuals

The MAX8865 and MAX8866 are dual low-dropout linear regulators that operate from a +2.5V to +5.5V input range and deliver up to 100mA. These devices are ideal for battery-operated portable equipment such as cellular phones, cordless phones, and modems. They feature Dual Mode™ operation, with preset output voltages of 3.15V for the “T” versions, 2.84V for the “S” versions, or 2.80V for the “R” versions, or adjustable output voltages using external resistor dividers. Other features include independent low-power shutdown, short-circuit protection, thermal shutdown protection, and reverse battery protection. The MAX8866 also includes an auto-discharge function, which actively discharges the selected output voltage to ground when the device is placed in shutdown mode. Both devices come in a miniature 8-pin µMAX package.

The MAX6680/MAX6681 are precise, two-channel digital thermometers that accurately measure the temperature of their own die and one remote PN junction and report the temperature on a 2-wire serial interface. The remote junction can be a diode-connected transistor like the low-cost NPN type 2N3904 or PNP type 2N3906. The remote junction can also be a common-collector PNP, such as a substrate PNP of a microprocessor. The MAX6680/MAX6681 include pin-programmable default temperature thresholds for the OVERT output, which provides fail-safe clock throttling or system shut- down. In addition, the devices are pin programmable to select whether the OVERT output responds to either the local, remote, or both temperatures. The 2-wire serial interface accepts standard System Management Bus (SMBus)™ commands such as Write Byte, Read Byte, Send Byte, and Receive Byte to read the temperature data and program the alarm thresholds and conversion rate. The MAX6680/MAX6681 can func- tion autonomously with a programmable conversion rate, which allows the control of supply current and temperature update rate to match system needs. For conversion rates of 4Hz or less, the remote sensor tem- perature can be represented in extended mode as 10 bits + sign with a resolution of 0.125°C. When the con- version rate is 8Hz, output data is 7 bits + sign with a resolution of 1°C. The MAX6680/MAX6681 also include an SMBus timeout feature to enhance system reliability. The MAX6681 i

This product can monitor temperature and automatically adjust fan speed to ensure optimum cooling while minimizing acoustic noise from the fan.

The MAX17710 is a complete system for charging and protecting micropower-storage cells such as Infinite Power Solution’s THINERGY® microenergy cells (MECs). The IC can manage poorly regulated sources such as energy-harvesting devices with output levels ranging from 1FW to 100mW. The device also includes a boost regulator circuit for charging the cell from a source as low as 0.75V (typ). An internal regulator protects the cell from overcharging. Output voltages supplied to the target applications are regulated using a low-dropout (LDO) linear regulator with selectable voltages of 3.3V, 2.3V, or 1.8V. The output regulator operates in a selectable low-power or ultra-low-power mode to minimize drain of the cell. Internal voltage protection prevents the cell from overdischarging. The device is available in an ultra-thin, 3mm x 3mm x 0.5mm 12-pin UTDFN package.

The MAX6698 precision multichannel temperature sensor monitors its own temperature, the temperatures of three external diode-connected transistors, and the temperatures of three thermistors. All temperature channels have programmable alert thresholds. Channels 1, 4, 5, and 6 also have programmable over-temperature thresholds. When the measured temperature of a channel exceeds the respective threshold, a status bit is set in one of the status registers. Two open-drain outputs, OVERT and ALERT, assert corresponding to these bits in the status register. The 2-wire serial interface supports the standard system management bus (SMBus™) protocols: write byte, read byte, send byte, and receive byte for reading the temperature data and programming the alarm thresholds. The MAX6698 is specified for an operating temperature range of -40°C to +125°C and is available in 16-pin QSOP and 16-pin TSSOP packages.

The MAX8576-MAX8579 synchronous PWM buck controllers use a hysteretic voltage-mode control algorithm to achieve a fast transient response without requiring loop compensation. The MAX8576/MAX8577 contain an internal LDO regulator allowing the controllers to function from only one 3V to 28V input supply. The MAX8578/MAX8579 do not contain the internal LDO and require a separate supply to power the IC when the input supply is higher than 5.5V. The MAX8576-MAX8579 output voltages are adjustable from 0.6V to 0.9 x VIN at loads up to 15A. Nominal switching frequency is programmable over the 200kHz to 500kHz range. High-side MOSFET sensing is used for adjustable hiccup current-limit and short-circuit protection. The MAX8576/MAX8578 can start up into a precharged output without pulling the output voltage down. The MAX8577/MAX8579 have startup output overvoltage protection (OVP), and will pull down a precharged output.

MAX8576-MAX8579 is a low-cost, 3V to 28V input, hysteresis synchronous step-down controller with the following features: 1.2% accuracy, adjustable output voltage, 200kHz to 500kHz switching frequency, adjustable, temperature-compensated 'hiccup' current limiting, non-destructive peak current detection, monotonic start-up from prebiased output (MAX8576/MAX8578), start-up overvoltage protection (MAX8577/MAX8579), enable/disable, and adjustable soft-start.

The MAX12005 satellite IF switch IC is designed for multi-user applications supporting two quad universal low-noise blocks (LNBs) to be matrix switched to four satellite receivers.

MAX8545/MAX8546/MAX8548 are PWM DC-DC converters with a maximum output current of 6A. They accept an input voltage range of 2.7V to 28V and provide an output voltage range of 0.8V to 0.9 times the input voltage. Features include low MOSFET RDS(ON), up to 95% efficiency, adjustable PWM frequency, and compatibility with MAX1967.

The MAX6699 precision multichannel temperature sensor monitors its own temperature and the temperatures of up to four external diode-connected transistors. All temperature channels have programmable alert thresholds. Channels 1 and 4 also have programmable overtemperature thresholds. When the measured temperature of a channel exceeds the respective threshold, a status bit is set in one of the status registers. Two open-drain outputs, OVERT and ALERT, assert corresponding to these bits in the status register. The 2-wire serial interface supports the standard system management bus (SMBus™) protocols: write byte, read byte, send byte, and receive byte for reading the temperature data and programming the alarm thresholds. The MAX6699 is specified for an operating temperature range of -40°C to +125°C and is available in 16-pin QSOP and 16-pin TSSOP packages.

The MAX6662 is a 12-bit + sign temperature sensor combined with a programmable overtemperature alarm and a 3-wire (SPI-compatible) serial interface in a single package. It converts its die temperature into digital values using an internal analog-to-digital converter (ADC). The temperature data is stored in a temperature register as a 13-bit word, which allows 0.0625°C resolution. The temperature data is readable at any time through the serial interface. The operating temperature range is -55°C to +150°C. The MAX6662 provides two programmable watchdog interrupt outputs. ALERT is used for lower temperature warning functions, while OT is used for higher temperature-critical functions, such as power-supply shutdown. The MAX6662 features a shutdown mode that saves power by disabling everything except the serial interface. The temperature sensor is available in an 8-pin SO package.

This document describes the features and characteristics of Teridian™ 4th-generation single-phase metering SoCs 71M6541D/71M6541F/71M6541G/71M6542F/71M6542G, including a 5MHz 8051-compatible MPU core, low-power RTC with digital temperature compensation, flash memory, and LCD driver, supporting a wide range of metering applications.

71M6541D/F/G and 71M6542F/G meter IC data sheet, are the 4th generation of high-integrated single-phase meter SoCs, including: 8051 compatible MPU, low-power real-time clock (RTC) with digital compensation, flash memory and LCD driver. Adopting our Single Converter Technology® , embedded with one 22-bit Σ-Δ ADC digital temperature sensor, three or four analog inputs, digital temperature compensation, precision voltage reference and 32-bit computing engine (CE), only a few external components can support various meter designs.

MAX8563/MAX8564/MAX8564A are ultra-low-output dual and triple LDO controllers that allow flexible and inexpensive point-of-load voltage conversion in motherboards, desknotes, notebooks, and other applications.

The MAX8563/MAX8564/MAX8564A are ultra-low output voltage, dual and triple LDO controllers, widely used in the load point voltage conversion of motherboards, desktop notebooks, notebooks and other fields, flexible and cost-effective.