●The TPS3895, TPS3896, TPS3897, and TPS3898 devices (TPS389x) are a family of very small supervisory circuits that monitor voltage greater than 500 mV with a 0.25% (typical) threshold accuracy and has capacitor-adjustable, delay-time flexibility. The TPS389x family also has a logic enable pin (ENABLE or ENABLE) to power on/off the output. With the TPS3895, for example, when the input voltage pin (SENSE) falls below the threshold, or if the enable pin (ENABLE) is low, then the output pin (SENSE_OUT) goes low. When SENSE rises above the threshold and ENABLE is high, then SENSE_OUT goes high after the capacitor-adjustable delay time elapses (A version only; for differences between the A and P versions, see Table 1). For truth tables, see Table 2 and Table 3.
●For TPS389xA versions, there is a capacitor-adjustable delay from when the enable pin asserts to when the output pin asserts; this period is the same as the delay from SENSE to the output pin. The TPS389xP devices have a fixed propagation delay from when the enable pin asserts to when the output pin asserts.
●All devices operate from 1.8 V to 6.5 V and have a low quiescent current of 6 µA with an open-drain output rated at 18 V. The TPS389x is available in an ultra-small µSON package and is fully specified over the temperature range of TA = –40°C to +125°C.
● Very Small µSON (1.5 mm × 1 mm) Package
● Adjustable Threshold down to 500 mV
● Threshold Accuracy: 1.0% Over Temperature
● Capacitor-Adjustable Delay Time
● Low Quiescent Current: 6 µA (typ)
● External Enable Input
● Open-Drain/Push-Pull Output Options
● Temperature Range: –40°C to +125°C
● APPLICATIONS
● DSPs, Microcontrollers, and Microprocessors
● Notebook and Desktop Computers
● PDAs and Handheld Products
● Portable and Battery-Powered Products
● FPGA and ASIC
●All trademarks are the property of their respective owners.
