General Description
The MX884 targets power management applications where high noise immunity and low cost are primary requirements. Its integrated 10-bit ADC provides high resolution, making it ideal for current monitoring systems. The MX884 enables digital power management, in which a microcontroller can readily monitor the current in a system and perform other control functions in power systems and motion control products.
The MX884 converts a small voltage developed across an external “current” sense resistor to a 10-bit digital output. It features a wide common mode input supply voltage range of 3V to 60V and easily interfaces to most microcontrollers. The design is simple yet cost-effective, requiring very few external components, making it especially suitable for high volume applications.

*3-60 V Operating Voltage Range
*Integrated 10-bit ADC
*3 wire serial interface
*Microcontroller Compatible
*Low Power
*Minimum External Components
*TSOT-23 RoHS Compliant Package

*Lighting Management
*Current Shunt Measurement
*Remote Sensing
*Battery Monitoring
*Microprocessor Controlled Power Management


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General description
The NE1617A is an accurate two-channel temperature monitor. It measures the temperature of itself and the temperature of a remote sensor. The remote sensor is a diode connected transistor. This can be in the form of either a discrete NPN/PNP, such as the 2N3904/2N3906, or a diode connected PNP built into another die, such as is done on some Intel microprocessors.
The temperature of both the remote and local sensors is stored in a register that can be read via a 2-wire SMBus. The temperatures are updated at a rate that is programmable via the SMBus (the average supply current is dependent upon the update rate—the faster the rate, the higher the current).
In addition to the normal operation, which is to update the temperature at the programmed rate, there is a one-shot mode that will force a temperature update.
There is also an alarm that senses either an overtemperature or undertemperature condition. The trip points for this alarm are also programmable.
The device can have 1 of 9 addresses (determined by 2 address pins), so there can be up to 9 of the NE1617A on the SMBus.
can also be put in standby mode (in order to save power). This can be done either with software (over the SMBus) or with hardware (using the STBY pin).

*Replacement for Maxim MAX1617 and Analog Devices ADM1021
*Monitors local and remote temperature
*Local (on-chip) sensor accuracy:
-±2 °C at 60 °C to 100 °C
-±3 °C at -40 °C to 125 °C
*Remote sensor accuracy:
-±3 °C at 60 °C to 100 °C
-±5 °C at -40 °C to 125 °C
*No calibration required
*Programmable overtemperature/undertemperature alarm
*SMBus 2-wire serial interface up to 100 kHz
*3 V to 5.5 V supply range; 5.5 V tolerant
*70 mA supply current in operating mode
*3 mA (typical) supply current in standby mode
*ESD protection exceeds 2000 V HBM per JESD22-A114, 250 V MM per JESD22-A115, and 1000 V CDM per JESD22-C101
*Latch-up testing is done to JEDEC standard JESD78, which exceeds 100 mA
*Small 16-lead SSOP (QSOP) package

*Desktop computers
*Notebook computers
*Smart battery packs
*Industrial controllers
*Telecommunications equipment


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General Description
The EMC1103 is a one-wire sensor that is capable of monitoring up to three temperature zones for an Intel PC platform containing an SST host. The three temperature zones consist of an internal temperature diode and two externally connected temperature diodes. In cooperation with a host device, thermal management and fan control can be performed. Communication takes place over a one-wire SST based interface. The internal 11-bit deltasigma ADC architecture provides superb linearity, high accuracy, and excellent noise immunity.

*Single Wire Interface (SST based)
-SST 1.0 compliant
-Fixed Address, Discoverable Device
-Nine programmable addresses
-Supports FCS Abort functionality not available in SST 0.9 compliant devices
*Resistance Error Correction
*Ideality Configuration
*Beta Compensation
*Two External Temperature Monitors
-0.125°C resolution
-±1°C Accuracy (50°C to 70°C)
-Diode Fault Reporting
-Second External Diode configured to read a discrete diode.
*Internal Temperature Monitor
-Range -40°C to +125°C
-0.125°C resolution
-±2°C Accuracy (40°C to 70°C)
-3.0V to 3.6V

*Desktop PCs, Servers and Workstations


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The ADM1184 is an integrated, 4-channel voltage-monitoring device. A 2.7 V to 5.5 V power supply is required on the VCC pin to power the device.
Four precision comparators monitor four voltage rails. Each comparator has a 0.6 V reference with a worst-case accuracy of 0.8%. Resistor networks that are external to the VIN1, VIN2, VIN3, and VIN4 pins set the trip points for the monitored supply rails.
The ADM1184 has four open-drain outputs. OUT1 to OUT3 can be used to enable power supplies, and PWRGD is a common power-good output.
OUT1 to OUT3 are dependent on their associated VINx input (that is, VIN1, VIN2, or VIN3). If a supply monitored by VINx drops below its programmed threshold, the associated OUTx pin and PWRGD are disabled.
PWRGD is a common power-good output indicating the status of all monitored supplies. There is an internal 190 ms (typical) delay associated with the assertion of the PWRGD output. If VIN1, VIN2, VIN3, or VIN4 drops below its programmed threshold, PWRGD is deasserted immediately.
The ADM1184 is available in a 10-lead mini small outline package (MSOP).

*Powered from 2.7 V to 5.5 V on the VCC pin
*Monitors 4 supplies via 0.8% accurate comparators
*4 inputs can be programmed to monitor different voltage levels with external resistor dividers
*3 open-drain enable outputs (OUT1, OUT2, and OUT3)
*Open-drain power-good output (PWRGD)
*Internal 190 ms delay associated with assertion of PWRGD
*10-lead MSOP

*Monitor and alarm functions
*Microprocessor systems


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 The CAT1232LP and CAT1832 microprocessor supervisors can halt and restart a “hung-up” or “stalled” microprocessor, restart a microprocessor after a power failure, and debounce a manual/push-button microprocessor reset switch.
The devices are drop in replacements for the Maxim/Dallas Semiconductor DS1232LP and DS1832 supervisors Precision reference and comparator circuits monitor the 5V or 3.3V system power supply voltage, VCC.
During power-up or when the power supply falls outside selectable tolerance limits, both the RESET and RESET¯¯¯¯¯¯ become active.
After the power supply voltage rises above the RESET threshold voltage, the reset signals remain active for a minimum of 250ms, allowing the power supply and system processor to stabilize.
The trip-point tolerance input, TOL, selects the trip level tolerance to be either 5% or 10% for the CAT1232LP 5V supply and 10% or 20% for the CAT1832 3.3V supply.
Each device has a push-pull, active HIGH reset output.
The CAT1232LP also has an open drain, active LOW reset output while the CAT1832 also has a push-pull, active LOW reset output.
A debounced manual reset input activates the reset outputs and holds them active for a minimum period of 250ms after being released.
Also included is a watchdog timer to reset a microprocessor that has stopped due to a software or hardware failure.
Three watchdog time-out periods are selectable: 150ms, 600ms and 1.2s. If the ST¯¯ input is not strobed low before the watchdog time out period expires, the reset signals become active for a minimum of 250ms.

* Selectable reset voltage tolerance
- CAT1232LP for 5V supply
- CAT1832 for 3.3V supply
* Selectable watchdog period: 150ms, 600ms or 1.2s
* Two reset outputs
- Active high, push-pull reset output
- Active low, open-drain reset output (CAT1232LP)
- Active low, push-pull reset output (CAT1832)
* Debounced manual push-button reset
* Compact SOIC and MSOP packages

* Microprocessor Systems
* Portable Equipment
* Controllers
* Single Board Computers
* Instrumentations
* Telecommunications


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 The XP10-M ten-input monitor module provides an interface between a control panel and normally open contact devices in intelligent alarm systems such as pull stations, security contacts, or flow switches.
The first address on the XP10-M is set from 01 to 150 and the remaining modules are automatically assigned to the next nine higher addresses.
Provisions are included for disabling a maximum of two unused addresses.
The supervised state (normal, open, or short) of the monitored device is sent back to the panel. A common SLC input is used for all modules, and the initiating device loops share a common supervisory supply and ground - otherwise each monitor operates independently from the others.
Each XP10-M module has panel-controlled green LED indicators.
The panel can cause the LEDs to blink, latch on, or latch off.

* Ten addressable Class B or five addressable Class A initiating device circuits.
* Removable 12 AWG (3.31 mm²) to 18 AWG (0.821 mm²) plug-in terminal blocks.
* Status indicators for each point.
* Unused addresses may be disabled.
* Rotary address switches.
* Class A or Class B operation.
* FlashScan® or CLIP operation.
* Mount one or two modules in a BB-XP cabinet (optional).
* Mount up to six modules on a CHS-6 chassis in a CAB-3 Series, CAB-4 Series, EQ Cabinet Series, or BB-25 cabinet (optional).
* Mounting hardware included.


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General Description
 The MAX6639 monitors its own temperature and one external diode-connected transistor or the temperatures of two external diode-connected transistors, typically available in CPUs, FPGAs, or GPUs.
The 2-wire serial interface accepts standard System Management Bus (SMBusTM) write byte, read byte, send byte, and receive byte commands to read the temperature data and program the alarm thresholds.
Temperature data can be read at any time over the SMBus, and three programmable alarm outputs can be used to generate interrupts, throttle signals, or overtemperature shutdown signals.
The temperature data is also used by the internal dual-PWM fan-speed controller to adjust the speed of up to two cooling fans, thereby minimizing noise when the system is running cool, but providing maximum cooling when power dissipation increases.
Speed control is accomplished by tachometer feedback from the fan, so that the speed of the fan is controlled, not just the PWM duty cycle.
Accuracy of speed measurement is ±4%.
The MAX6639 is available in 16-pin QSOP and 16-pin thin QFN 5mm x 5mm packages.
It operates from 3.0V to 3.6V and consumes just 500μA of supply current.

* Two Thermal-Diode Inputs
* Up to 25kHz PWM Output Frequency
* Three Selectable SMBus Addresses
* Local Temperature Sensor
* 1°C Remote Temperature Accuracy
* Two PWM Outputs for Fan Drive (Open Drain; Can be Pulled Up to +13.5V)
* Programmable Fan-Control Characteristics
* Automatic Fan Spin-Up Ensures Fan Start
* Controlled Rate-of-Change Ensures Unobtrusive Fan-Speed Adjustments
* ±3% Fan-Speed Measurement Accuracy
* Temperature Monitoring Begins at POR for Fail- Safe System Protection
* OT and THERM Outputs for Throttling or Shutdown
* Measures Temperatures Up to +150°C
* MAX6639F is Optimized for n = 1.021 for Penryn Compatability

* Desktop Computers
* Notebook Computers
* Projectors
* Servers
* Networking Equipment


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 The AD8215 is a high voltage, precision current shunt monitor.
It features a set gain of 20 V/V, with a maximum ±0.3% gain error over the entire temperature range.
The buffered output voltage directly interfaces with any typical converter.
Excellent common-mode rejection from −2 V to +65 V is independent of the 5 V supply.
The AD8215 performs unidirectional current measurements across a shunt resistor in a variety of industrial and automotive applications, such as motor controls, solenoid controls, or battery management.
Special circuitry is devoted to output linearity being maintained throughout the input differential voltage range of 0 mV to 250 mV, regardless of the common-mode voltage present.
The AD8215 has an operating temperature range of −40°C to +125°C and is offered in a small 8-lead SOIC_N package.

* ±4000 V HBM ESD
* High common-mode voltage range
- −2 V to +65 V operating
- −3 V to +68 V survival
* Buffered output voltage
* Wide operating temperature range
- 8-Lead SOIC_N: −40°C to +125°C
* Excellent ac and dc performance
- 6 μV/°C typical offset drift
- −8 ppm/°C typical gain drift
- 120 dB typical CMRR at dc

* High-side current sensing
* Motor controls
* Transmission controls
* Engine management
* Suspension controls
* Vehicle dynamic controls
* DC-to-dc converters


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The MAX809 and MAX810 are cost–effective system supervisor circuits designed to monitor VCC in digital systems and provide a reset signal to the host processor when necessary. No external components are required.
The reset output is driven active within 20 msec of VCC falling through the reset voltage threshold. Reset is maintained active for a minimum of 140msec after VCC rises above the reset threshold. The MAX810 has an active–high RESET output while the MAX809 has
an active–low RESET output. The output of the MAX809 is guaranteed valid down to VCC = 1V. Both devices are available in a SOT–23 package.
The MAX809/810 are optimized to reject fast transient glitches on the VCC line. Low supply current of 17mA (VCC = 3.3V) makes these devices suitable for battery powered applications.

• Precision VCC Monitor for 3.0V, 3.3V, and 5.0V Supplies
• 140msec Guaranteed Minimum RESET, RESET Output Duration
• RESET Output Guaranteed to VCC = 1.0V (MAX809)
• Low 17mA Supply Current
• VCC Transient Immunity
• Small SOT–23 Package
• No External Components
• Wide Operating Temperature: –40°C to 85°C

• Computers
• Embedded Systems
• Battery Powered Equipment
• Critical mP Power Supply Monitoring


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General Description
The MAX16031/MAX16032 EEPROM-configurable system monitors feature an integrated 10-bit analog-todigital converter (ADC) designed to monitor voltages, temperatures, and current in complex systems. These EEPROM-configurable devices allow enormous flexibility in selecting operating ranges, upper and lower limits, fault output configuration, and operating modes with
the capability of storing these values within the device. The MAX16031 monitors up to eight voltages, three temperatures (one internal/two external remote temperature diodes), and a single current. The MAX16032 monitors up to six voltages and two temperatures (one internal/one remote temperature diode). Each of these monitored parameters is muxed into the ADC and written to its respective register that can be read back through the SMBus™ and JTAG interface.
Measured values are compared to the user-configurable upper and lower limits. For voltage measurements, there are two undervoltage and two overvoltage limits. For current and temperature, there are two sets of upper limits. Whenever the measured value is outside its limits, an alert signal is generated to notify the processor. Independent outputs are available for overcurrent, overtemperature, and undervoltage/overvoltage that are configured to assert on assigned channels. There are also undedicated fault outputs that are configured to offer a secondary limit for temperature, current, or voltage fault or provide a separate overvoltage output.
During a major fault event, such as a system shutdown, the MAX16031/MAX16032 automatically copy the internal ADC registers into the nonvolatile EEPROM registers that then are read back for diagnostic purposes.
The MAX16031/MAX16032 offer additional GPIOs that are used for voltage sequencing, additional fault outputs, a manual reset input, or read/write logic levels. A separate current-sense amplifier with an independent output allows for fast shutoff during overcurrent conditions.
The MAX16031/MAX16032 are available in a 7mm x 7mm TQFN package and are fully specified from -40°C to +85°C.

* Supply Voltage Operating Range of 2.85V to 14V
* Monitors Up to Eight Voltages (Single-Ended or Pseudo-Differential) with 1% Accuracy
* EEPROM-Configurable Limits
Two Undervoltage and Two Overvoltage
Two Overtemperature
Two Overcurrent
* High-Side Current-Sense Amplifier with Overcurrent Output (MAX16031 Only)
* Monitors Up to Three Temperatures (1 Internal/2 Remote)
* Nonvolatile Fault Memory Stores Fault Conditions for Later Retrieval
* Two Additional Configurable Fault Outputs
* Two Configurable GPIOs
* SMBus/I2C-Compatible Interface with ALERT Output and Bus Timeout Function
* JTAG Interface
* 7mm x 7mm, 48-Pin TQFN Package


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