GENERAL DESCRIPTION
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).

FEATURES
*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

APPLICATIONS
*Monitor and alarm functions
*Telecommunications
*Microprocessor systems
*PC/servers

ADM1184ARMZ, ADM1184ARMZ-REEL7  

ADM1184 - 0.8% Accurate Quad Voltage Monitor

DESCRIPTION
 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.

FEATURES
* 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

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

CAT1232LPL-G
CAT1232LPV-GT3
CAT1232LPZ-GT3
CAT1232LPW-T2

 

CAT1232 - 5V and 3.3V Supply Monitor, Watchdog Timer, Manual Reset, with Active High & Low Resets

General
 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.

Features
* 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.

XP10-M
XP10-MA

 

XP10-M - Ten-Input Monitor Module

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.

Features
* 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

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

MAX6639AEE
MAX6639ATE
MAX6639FAEE
MAX6639F

 

MAX6639 - 2-Channel Temperature Monitor with Dual, Automatic, PWM Fan-Speed Controller

GENERAL DESCRIPTION
 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.

FEATURES
* ±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

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

AD8215YRZ
AD8215YRZ-RL
AD8215YRZ-R7  

AD8215 - Current Shunt Monitor