Product Summary

The MAX690CPA is a supervisory circuit. It reduces the complexity and number of components required for power supply monitoring and battery control functions in microprocessor systems. These include μP reset and backup-battery switchover, watchdog timer, CMOS RAM write protection, and power-failure warning. The MAX690CPA significantly improves system reliability and accuracy compared to that obtainable with separate ICs or discrete components. The applications of the MAX690CPA include computers, controller, inteligent instruments, automotive systems and critical μP power monitoring.

Parametrics

MAX690CPA absolute maximum ratings: (1)terminal voltage with respect to GND, VCC: -0.3 to 6.0V; VBATT: -0.3 to 6.0V; all other inputs: -0.3 to VOUT+0.5V; (2)input current, VCC: 200mA; VBATT: 50mA; GND: 20mA; (3)output current, VOUT: short circuit protected; all other outputs: 20mA; (4)rate-of-rise, VBATT, VCC: 100V/μs; (5)operating temperature range: 0 to 70℃; (6)power dissipation: 400mW; (7)storage temperature range: -65 to 160℃; (8)lead temeprature (soldering, 10s): 300℃.

Features

MAX690CPA features: (1)precision voltage monitor; (2)power OK/Reset time delay: 50, 200ms, or adjustable; (3)watchdog timer: 100ms, 1.6sec, or adjustable; (4)minimum component count; (5)1μA standby current; (6)battery backup power switching; (7)onboard gating of chip enable signals; (8)voltage monitor for power fail or low battery warning.

Diagrams

MAX690CPA pin configuration

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
MAX690CPA
MAX690CPA
Maxim Integrated Products
Supervisory Circuits
Data Sheet
Negotiable 
MAX690CPA+
MAX690CPA+
Maxim Integrated Products
Supervisory Circuits MPU Supervisor
Data Sheet
0-1: $4.97
1-25: $3.34
25-50: $2.42
50-100: $2.39