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TD340D 데이터시트(PDF) 5 Page - STMicroelectronics |
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TD340D 데이터시트(HTML) 5 Page - STMicroelectronics |
5 / 21 page TD340 5/21 ELECTRICAL CHARACTERISTICS (continued) Vbatt= 12V, Tamb=-40 °C to 125°C (unless otherwise specified) Symbol Parameter Test Conditio n Min. Typ. Max. Unit VOLTAGE REGULATOR - Co=220nF - note 2 Vout Output Voltage Io=20mA T=25 °C 40 °C < T < 125°C 4.6 4.5 5 5 5.4 5.5 V V Line Reg Line Regulation 6V < Vbatt < 16V, Io=20mA T=25 °C 40 °C < T < 125°C 100 150 mV mV Load Reg Load Regulation 0 ≤ Io ≤ 40mA T=25 °C 40 °C < T < 125°C 20 40 mV mV Io Maximum Output Current Vbatt = 12V 6V < Vbatt < 16V 40 20 mA mA Ios Output Current Short Circuit Vout=0 100 200 mA RESET SUPERVISORY CIRCUIT - note 3 Vthi Threshold Voltage Vout Increasing T=25 °C 40 °C < T < 125°C 4.0 3.9 4.3 4.5 4.6 V V Vthd Threshold Voltage Vout Decreasing T=25 °C 40 °C < T < 125°C 3.9 3.8 4.2 4.4 4.5 V V ki Linearity coefficient (Vthi = ki Vout) 0.86 kd Linearity coefficient (Vthd = kd Vout) 0.84 Vhys Hysteresis Threshold Voltage 50 100 200 mV tphl Response Time High to Low 5 µs WATCHDOG CIRCUIT twd Watchdog Time Out Period No ext. capacitor Cwd = 47nF - note 4 0.5 0.7 1 1 2 1.5 ms s tipw Watchdog Input Pulse Width for Proper Retrigger 0.1 µs tipr Watchdog Input Rise Time for Proper Retrigger 0.1 µs treset Reset Pulse Width 10 20 40 µs TEMPERATURE OUTPUT VT Output Voltage T= 25oC 2.58 2.68 2.78 V ∆V T Output Temperature Drift -7 -7.5 -7.8 mV/ oC Notes : 1. For proper operation, a 5.6k resistor needs to be connected between OSC and GND. 2. 220nF is the optimized value for the voltage regulator 3. The reset thresholds (Vout increasing and decreasing) are proportional to Vout, (coefficients ki and kd). ki and kd vary in the same direc- tion with temperature. 4. Watchdog capacitor Cwd should be placed as close as possible to CWD pin. |
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