TS3809

TS3809/3810 Series Microprocessor Reset Circuit SOT-23 Pin Definition: TS3809 TS3810 1. GND 1. GND 2. RESET 2. (RESET) 3. VCC 3. VCC General Description The TS3809/3810 series are used for microprocessor (µP) supervisory circuits to monitor the power supplies in µ P and digital systems. They provide excellent circuit reliability and low cost by eliminating external components and adjustments when used with +5V, +3.3V, +3.0V, +2.5V powered circuits. These circuits perform a single function: they assert a reset signal whenever the VCC supply voltage declines below a preset threshold, keeping it asserted for at least 200ms after VCC has risen above the reset threshold. Reset thresholds suitable for operation with a variety of supply voltages are available. TS3809/3810 series have push pull outputs. TS3809 series have an active low RESET output, while the TS3810 has an active high RESET output The reset comparator is designed to ignore fast transients on VCC, and the outputs are guaranteed to be in the correct logic state for VCC down to 1.0V. Low supply current makes TS3809/3810 series ideal for use in portable equipment. Features ● ● ● ● ● ● ● ● ● ● High Accurate: ±2% Precision monitoring of +3V, +3.3V and +5V Power supply voltage Fully specified over temperature Available in three output configurations Push-Pull RESET low output (TS3809) Push-Pull (RESET) high output (TS3810) 200mS typ. Power-on reset pulse width 25µS supply current Guaranteed reset valid to Vcc=+1V Power supply transient immunity Ordering Information Part No. TS3809CXx RF Package SOT-23 Packing 3Kpcs / 7” Reel 3Kpcs / 7” Reel TS3810CXx RF SOT-23 Note: x is the threshold voltage type, option as: A : 4.63V B : 4.38V C : 4.00V D : 3.08V E : 2.93V F : 2.63V G : 2.25V Typical Application Circuit Applications ● ● ● ● ● Battery-operated systems and Controllers Intelligent instruments Critical uP and uC power monitoring Portable / Battery powered equipment Automotive Absolute Maximum Rating Parameter Terminal Voltage (with respect to Gnd) RESET & (RESET) push-pull Input Current, VCC Output Current, RESET, (RESET) Power Dissipation Operating Junction Temperature Range Storage Temperature Range Lead Soldering Temperature (260 C) o Symbol VCC VRESET ICC IO PD TJ.OPR TSTG TLEAD Maximum GND - 0.3 to GND +6.5 GND - 0.3 to VCC +0.3 20 5 (TJ-TA)/θJA -40 ~ +125 -65 ~ +150 10 Unit V V mA mA mW o C o C S 1/7 Version: C07 TS3809/3810 Series Microprocessor Reset Circuit Thermal Performance Parameter Thermal Resistance from Junction to Case Thermal Resistance from Junction to ambient 2 Symbol θ JC θJA Maximum 110 250 Unit ºC/W ºC/W Note: θ JA is measured the PCB copper area of approximately 1in (Multi-layer). Needs to connect to VSS pin. Electrical Specification (Ta = 25oC, unless otherwise specified.) Parameter Input Supply Voltage Supply Current o Conditions Ta=-40 C~+85 C VCC=VTH +1V TS3809/3810CXA TS3809/3810CXB TS3809/3810CXC TS3809/3810CXD TS3809/3810CXE TS3809/3810CXF TS3809/3810CXG o Symbol VCC ICC Min 1.0 -4.54 4.29 3.92 3.02 2.87 2.57 2.20 Typ -25 4.63 4.38 4.00 3.08 2.93 2.63 2.25 50 -20 200 ----40 Max 6 35 4.71 4.46 4.08 3.15 3.00 2.69 2.30 ---260 0 .3 -0 .3 --- Unit V uA Reset Threshold VTH V Reset Threshold Temperature Coefficient Set-up Time VCC to Reset Delay Reset Active Timeout Period RESET Output (TS809) Voltage Low RESET Output (TS809) Voltage High (RESET) Output (TS810) Voltage Low (RESET) Output (TS810) Voltage High Hysteresis at Vcc TA=0~+85ºC VCC = 0 ~ (VTH - 100mV) VCC = VTH ~ (VTH - 100mV) TA=0~+85ºC 1.8V