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MAX6683：Temperature Sensor and System Monitor in a 10-Pin µMAX

The MAX6683 system supervisor monitors multiple power-supply voltages, including its own, and also features an on-board temperature sensor. The MAX6683 converts voltages to an 8-bit code and temperatures to an 11-bit (10-bit-plus-sign) code using an analog-to-digital converter (ADC). A multiplexer automatically sequences through the voltage and temperature measurements. The digitized signals are then stored in registers and compared to the over/underthreshold limits programmed over the SMBus™/I²C-compatible 2-wire serial interface. When a temperature measurement exceeds the programmed threshold, or when an input voltage falls outside the programmed voltage limits, the MAX6683 generates a latched interrupt output active-low ALERT. Three interrupt modes are available for temperature excursions. These are default mode, one-time interrupt mode, and comparator mode. The active-low ALERT output is cleared, except for temperature interrupts generated in comparator mode, by reading the Interrupt Status register (Table 5). The active-low ALERT output can also be masked by writing to the appropriate bits in the Interrupt Mask register (Table 6) or by setting bit 1 of the Configuration register (Table 4) to zero. The MAX6683 SMBus/I²C-compatible interface also responds to the SMB alert response address.

Key Features Monitors Local Temperature Monitors Three External Voltages (1.8V, 2.5V, 5V Nominal) Monitors VCC (3.3V Nominal) User-Programmable Voltage and Temperature Thresholds Alert Function with Ability to Respond to SMB Alert Response Address +2.7V to +5.5V Supply Range -40°C to +125°C Temperature Range 60Hz or 50Hz Line-Frequency Rejection Tiny 10-Pin µMAX Package MAX6683EVKIT Available

MAX6683: Typical Application Circuit Applications/Uses Networking Servers Telecommunications Workstations

DataSheet

Parametrics

Design kits & evaluation modules

• MAX6683EVCMODU
• MAX6683EVKIT

Quality and Environmental Data

• MAX6683.pdf

Ordering Information