FEATURES

· Two Supply Monitors in One Package

· One Monitor with Fixed High-Accuracy

Thresholds for System Supply Monitoring

· Second Monitor with Variable Threshold and

30mV Hysteresis to Provide Failsafe

· Very Low Quiescent Current: 3.5mA typ

· High Threshold Accuracy: 1% max

(0°C to +85°C)

· Open-Drain Reset Outputs

· Temperature Range: –40°C to +85°C

· Ultra-Small SC70-5 Package

APPLICATIONS

· DSP, Microcontroller, or Microprocessor

Applications Requiring User-Selected Delay

Times

· Notebook/Desktop Computers

· PDAs and SmartPhones

· Other Hand-Held Products

· Portable, Battery-Powered Products

· FPGA/ASIC Applications

DESCRIPTION

The TPS3807 family microprocessor supervisory

circuits monitor system voltages as low as 1.225V.

These devices assert an open-drain RSTVDD signal

when the VDD voltage drops below a preset threshold. The RSTVDD output remains asserted

until the VDD voltage returns above its threshold. The

device also provides an additional RSTSENSE

output for a SENSE input with adjustable thresholds

and hysteresis.

The TPS3807 uses a precision reference to achieve

1% threshold accuracy. The TPS3807 has a very low

typical quiescent current of 3.5mA, so it is well-suited

to battery-powered applications. It is available in a

small SC70-5 package, which is half the size of a

SOT-23 package, and is fully specified over a

temperature range of –40°C to +85°C.