1 Features

• Ultralow Supply Current: 150 nA (Typical)
• Operating Supply Voltage: 0.9 V to 6.5 V
• Valid Reset for V_DD > 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

2 Applications

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

3 Description

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

1. For all available packages, see the orderable addendum at the end of the data sheet.

Typical Application Circuit

Supply Current vs Temperature