Texas Instruments TPS3839 | Demoboard TIDA-00475

Description

The TPS3831 and TPS3839 devices (both referred to as the TPS383x) are ultralow current (150 nA, typical), voltage supervisory circuit that monitor a single voltage. Both devices assert an active-low reset signal whenever the VDD supply voltage drops below the factory-trimmed reset threshold voltage. The reset output remains asserted for 200 ms (typical) after the VDD voltage rises above the threshold voltage. These devices are designed to ignore fast transients on the VDD pin. The TPS3831 device includes a manual reset input, which forces RESET low when MR is low.

The ultralow current consumption of 150 nA makes these voltage supervisors ideal for use in low-power and portable applications. The TPS383x devices are specified to have the correct output logic state for supply voltages down to 0.6 V.

The TPS383x devices feature precision factory-trimmed threshold voltages and extremely low-power operation. The TPS3831 device is available in a 4-pin, 1-mm × 1-mm (DQN) X2SON package. The TPS3839 device is available in a 3-pin SOT23 (DBZ) package or a 4-pin, 1-mm × 1-mm (DQN) X2SON package.

Features

• Ultralow Supply Current: 150 nA (Typical)
• Operating Supply Voltage: 0.9 V to 6.5 V
• Valid Reset for VDD > 0.6 V
• Push-Pull RESET Output
• Factory-Trimmed Reset Threshold Voltages
• Temperature Range: –40°C to 85°C
• Packages: 1-mm × 1-mm X2SON or 3-Pin SOT23

Typical applications

• Cell Phones
• Industrial Equipment
• Glucose Monitors
• Televisions
• Portable and Battery-Powered Equipment
• Metering

More information

• Datasheet
• IC product information