1FEATURES

2• Small, 5-Pin SC-70 (SOT-323) Package

• Supply Current of 9 mA

• Power-On Reset Generator With Fixed Delay

Time

– TPS3800 = 100 ms

– TPS3801 = 200 ms

– TPS3802 = 400 ms

• Precision Supply Voltage Monitor 1.8 V, 2.5 V,

2.7 V, 3 V, 3.3 V, 5 V, and Adjustable

• Manual Reset Input (Except TPS3801-01)

• Temperature Range: –40°C to +85°C

APPLICATIONS

• Applications Using DSPs, Microcontrollers, or

Microprocessors

• Wireless Communication Systems

• Portable/Battery-Powered Equipment

• Programmable Controls

• Intelligent Instruments

• Industrial Equipment

• Notebook/Desktop Computers

• Automotive Systems

DESCRIPTION

The TPS380x family of supervisory circuits monitor

supply voltages to provide circuit initialization and

timing supervision, primarily for DSPs and other

processor-based systems.

These devices assert a push-pull RESET signal when

the SENSE (adjustable version) or VDD (fixed version)

drops below a preset threshold. The RESET output

remains asserted for the factory programmed delay

time after the SENSE or VDD return above its

threshold.

The TPS380x devices, except the TPS3801-01,

incorporate a manual reset input (MR). A low level at

MR causes RESET to become active.

The TPS380x uses a precision reference to achieve

an overall threshold accuracy of 2%—2.5%. These

devices are available in a 5-pin SC-70 package,

which is only about half the size of a 5-pin SOT-23 package.

The TPS380x devices are fully specified over a

temperature range of –40°C to +85°C.