RT9828 Datasheet | Richtek

Description The RT9828 is a micro-power voltage detector supervising the power supply voltage level for microprocessors (u P) or digital systems. It provides internally fixed threshold levels ranging from 1.2V to 5V, which covers most digital applications. It features low supply current of 6u A. The RT9828 performs supervisory function by sending out a reset signal whenever the VDD voltage falls below a preset threshold level. This reset signal will last the whole period before VDD recovering. Once the VDD exceeds the threshold level, the reset signal will be released after a certain delay time. The RT9828 is available in SOT-23-6 package. Ordering Information RT9828- Package Type E : SOT-23-6 Lead Plating System P : Pb Free G : Green (Halogen Free and Pb Free) Note : Threshold Voltage : RESET1/RESET2 WP : 1.6V/3.0V GP : 1.8V/3.0V Richtek products are : ` Ro HS pliant and patible with the current require- ments of IPC/JEDEC J-STD-020. ` Suitable for use in Sn Pb or Pb-free soldering processes. Features z High Accuracy ±1.5% z Low Supply Current 6u A z Quick Reset within 20us z Built-in 55ms Recovery Delay z Low Functional Supply Voltage 0.9V z Dual N-Channel Open-Drain Output z Small SOT-23-6 Packages z Ro HS pliant and 100% Lead (Pb)-Free Applications z puters z Controllers z Intelligent Instruments z Critical u P and u C Power Monitoring z Portable/Battery-Powered Equipment Pin Configurations (TOP VIEW) RESET1 GND VDD2 VDD1 NC RESET2 SOT-23-6 Marking Information For marking information, contact our sales representative directly or through a Richtek distributor located in your area. DS9828-02 April 2011 Downloaded from Elcodis. electronic ponents distributor .richtek. 1 Typical Application Circuit 100k VDD1 VDD2 RT9828 1 VDD1 RESET1 6 GND 5 4 VDD2 RESET2 3 RESET1 RESET2 100k Functional Pin Description Pin No. Pin Name Pin Function 1 VDD1 Input of Detector1. 2 NC No Internal Connection. It should be floating. 3...