ncv8508b ON Semiconductor, ncv8508b Datasheet
ncv8508b
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ncv8508b Summary of contents
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... The NCV8508B is a precision micropower Low Dropout (LDO) voltage regulator. The part contains many of the required features for powering microprocessors. Its robustness makes it suitable for severe automotive environments. In addition, the NCV8508B is ideal for use in battery operated, microprocessor controlled equipment because of its extremely low quiescent current. ...
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PACKAGE PIN DESCRIPTION PACKAGE PIN # SO−8 EP PIN SYMBOL 4 V Regulated output voltage ± 3.0%. OUT 5 V Supply Voltage to the IC WDI CMOS compatible input lead. The Watchdog function monitors the falling edge of ...
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MAXIMUM RATINGS Input Voltage, V (DC) IN Peak Transient Voltage (46 V Load Dump @ V Output Voltage, V OUT ESD Susceptibility: Logic Inputs/Outputs (RESET, WDI, Wakeup) Operating Junction Temperature Storage Temperature Range Peak Reflow Soldering ...
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ELECTRICAL CHARACTERISTICS (−40°C ≤ T unless otherwise specified.) Characteristic OUTPUT Output Voltage 5.0 V Dropout Voltage (V − 5 OUT Load Regulation Line Regulation Current Limit Thermal Shutdown Quiescent Current RESET Threshold 5.0 V Output Low ...
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TIMING DIAGRAMS V IN RESET Wakeup WDI V OUT POR RESET High to Wakeup Delay Time Power Up Microprocessor Sleep Mode Figure 3. Power Up, Sleep Mode and Normal Operation V IN RESET Wakeup WDI V OUT POR RESET High ...
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TYPICAL PERFORMANCE CHARACTERISTICS 110 −40°C 100 +25°C 90 +125° 100 150 Output Current (mA) Figure 6. Quiescent Current vs Output Current 3.7 3.6 3.5 3.4 3.3 NCV85081B 3.2 3.1 3.0 2.9 2.8 2.7 −40 − ...
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TYPICAL PERFORMANCE CHARACTERISTICS 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 100 150 Output Current (mA) Figure 12. Dropout Voltage vs Output Current 160 140 120 100 ...
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... NCV8508B Wakeup function microprocessor out of Sleep mode. The microprocessor in turn signals its Wakeup status back to the NCV8508B by issuing a Watchdog signal. The Watchdog logic function monitors an input signal (WDI) from the microprocessor. The NCV8508B responds to the falling edge of the Watchdog signal which it expects at least once during each Wakeup period ...
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... Wakeup Period = (4.17 × Delay −8 RESET Delay Time = (5.21 × 10 RESET HIGH to Wakeup Delay Time = (2.08 × 10 Resistor temperature coefficient and tolerance as well as the tolerance of the NCV8508B must be taken into account CIRCUIT DESCRIPTION in order to get the correct system tolerance for each parameter. WDI . Delay ...
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Recommend Thermal Data for SOIC−8 EP Package Parameter Pad is soldered to PCB copper Junction−to−Lead (psi−JL Junction−to−Lead (psi−JPad Junction−to−Ambient ( qJA oz. copper copper area, ...
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Table 1. SOIC 8−Lead EP Thermal RC Network Models 717 mm Cauer Network C’s 1 2.7E−06 2 1.1E−05 3 3.2E−05 4 1.3E−04 5 1.8E−03 6 7.9E−03 7 2.5E−02 8 1.4E−01 9 4.1E−01 10 1.6E+00 R’s 1 0.474 ...
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Copper Spreader Area 140 120 100 100 200 300 400 COPPER AREA (mm Figure 20. SOIC 8−Lead EP qJA as a Function of the Pad Copper Area Including ...
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Junction Time constants are not simple RC products. Amplitudes of mathematical solution are not the resistance values. Figure 23. Grounded Capacitor Thermal Network (“Cauer” Ladder Junction ...
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Calculating Power Dissipation in a Single Output Linear Regulator The maximum power dissipation for a single output regulator (Figure 25) is: P D(max IN(max OUT(min OUT(max IN(max where ...
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... E 6.00 BSC E1 3.90 BSC É É Ç Ç e 1.27 BSC L 0.40 1.27 (b) b1 É É Ç Ç L1 1.04 REF F 2.24 3.20 É É Ç Ç G 1.55 2.51 h 0.25 0. Exposed Pad mm inches ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative NCV8508B/D ...