TPS389 Datasheet | Texas Instruments

Features - 1 Very Small USON (1.45 mm × 1.00 mm) Package - Adjustable Threshold Down to 500 m V - Threshold Accuracy: 1% Over Temperature - Capacitor-Adjustable Delay Time - Low Quiescent Current: 6 µA (Typical) - External Enable Input - Open-Drain (Rated at 18 V) and Push-Pull Output Options - Temperature Range: - 40°C to 125°C - Pin-for-Pin patible With MAX6895/6/7/8 2 Applications - DSPs, Microcontrollers, and Microprocessors - Notebook and Desktop puters - PDAs and Handheld Products - Portable and Battery-Powered Products - FPGAs and ASICs 3 Description The TPS3895, TPS3896, TPS3897, and TPS3898 devices (TPS389x) are a family of very small supervisory circuits that monitor voltages greater than 500 m V with a 0.25% (typical) threshold accuracy and offer adjustable delay time using external capacitors. The TPS389x family also has a logic enable pin (ENABLE or ENABLE) to power on and off the output. With the TPS3895, for example, when the input voltage pin (SENSE) rises above the threshold, and the ENABLE pin is high, then the output pin (SENSE_OUT) goes high after the capacitoradjustable delay time. When SENSE falls below the threshold or ENABLE is low, then SENSE_OUT goes low. For truth tables, see Table 1 and Table 2. For TPS389x A versions, both SENSE and ENABLE have a capacitor-adjustable delay. The output asserts after this capacitor-adjustable delay when both SENSE and ENABLE inputs are good. The TPS389x P devices have a small, 0.2-µs propagation delay from when the enable pin asserts to when the output pin asserts, provided SENSE is above the threshold. All devices operate from 1.7 V to 6.5 V and have a typical quiescent current of 6 µA with an open-drain output rated at 18 V. The TPS389x is available in an ultra-small USON package and is fully specified over the temperature range of TJ = - 40°C to 125°C. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) TPS389x USON (6) 1.45 mm × 1.00 mm (1) For all available packages, see the orderable...