ADM809-5S

Features:

·Specified Over Temperature
·Low Power Consumption (17
A)
·Precision Voltage Monitor: 3 V, 5 V Options
·Reset Assertion Down to 1 V VCC
·30 ms min Power-On Reset
·Logic Low RESET Output


Application

·Microprocessor Systems
·Computers
·Controllers
·Intelligent Instruments
·Automotive Systems


Pinout




Specifications

(TA = 25 unless otherwise noted)
VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to +6 V
RESET, RESET . . . . . . . . . . . . . . . . . . 0.3 V to VCC + 0.5 V
Input Current
VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA
Output Current
RESET, RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA
Rate of Rise, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 V/µs
Power Dissipation, RT-3 SOT-23
Derate by 4 mW/ above 70 . . . . . . . . . . . . . . . 320 mW
_JA Thermal Impedance . . . . . . . . . . . . . . . . . . . . . 333/W
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . . 300
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . . . 215
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
Storage Temperature Range . . . . . . . . . . . . . 65 to +150


Description

The ADM809-5S/L supervisory circuits monitor the power supply voltage in microprocessor systems. It provides a reset output during power-up, power-down and brownout conditions. On power-up, an internal timer holds reset asserted for 55 ms. This holds the microprocessor in a reset state until conditions have stabilized. The RESET output remains operational with VCC as low as 1 V. The ADM809-5S/L provides an active low reset signal (RESET ).
The reset comparator features built-in glitch immunity, making it immune to fast transients on VCC.
The ADM809-5S/L consumes only 17 µA, making it suitable for low power portable equipment.