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A6250 Datasheet(PDF) 2 Page - EM Microelectronic - MARIN SA |
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A6250 Datasheet(HTML) 2 Page - EM Microelectronic - MARIN SA |
2 / 13 page Absolute Maximum Ratings Parameter Symbol Conditions Continuous voltage at INPUT to VSS VINPUT -0.3 to +45 V Transients on INPUT for t< 100 ms and duty cycle 1% VTRANS up to +60 V Reverse supply voltage on INPUT VREV -20 V Max. voltage at any signal pin VMAX OUTPUT+0.3V Min. voltage at any signal pin VMIN VSS-0.3V Storage temperature TSTO -65 to +150°C Operating junction temperature TJ max. 150 °C Electrostatic discharge max. To MIL-STD-883C method 3015 VSmax 1000V Max. soldering conditions TSmax 250°C x 10 s Max. Output current IOUTPUTmax 300 mA Table 1 Stresses above these listed maximum ratings may cause permanent damage to the device. Exposure beyond specified operating conditions may affect device reliability or cause malfunction. Decoupling Methods The input capacitor is necessary to compensate the line influences. A resistor of approx. 1 Ω connected in series with the input capacitor may be used to damp the oscilla- tion of the input capacitor and input inductivity. The ESR value of the capacitor plays a major role regarding the effi- ciency of the decoupling. It is recommended also to con- nect a ceramic capacitor (100 nF) directly at the IC’s pins. In general the user must assure that pulses on the input line have slew rates lower than 1 V/µs. On the output side, the capacitor is necessary for the stability of the regulation circuit. The stability is guaranteed for values of 22 µF or bigger. It is specially important to choose a capacitor with a low ESR value. Tantal capacitors are recommended. See the notes related to Table 2. Special care must be taken in disturbed environments (automotive, proximity of motors and relays, etc.). Handling Procedures This device has built-in protection against high static volt- ages or electric fields; however, anti-static precautions must be taken as for any other CMOS component. Unless otherwise specified, proper operation can only occur when all terminal voltages are kept within the supply volt- age range. Unused inputs must always be tied to a de- fined logic voltage level. Operating Conditions Parameter Symbol Min. Max. Units Operating junction temperature1) TJ -40 +125 °C INPUT voltage 2) VINPUT 2.3 40 V OUTPUT voltage 2) 3) VOUTPUT 1.2 V RES & EN guaranteed 4) VOUTPUT 1.2 V OUTPUT current 5) IOUTPUT 250 mA Comparator input voltage VIN 0 VOUTPUT V RC-oscillator programming 6) R 10 1000 k Ω Thermal resistance from junction to ambient 7) - PSOP2-16 Rth(j-a) 30 90 °C/W Table 2 1) The maximum operating temperature is confirmed by sampling at initial device qualification. In production, all devices are tested at +125°C. 2) Full operation guaranteed. To achieve the load regulation specified in Table 3 a 22 µF capacitor or greater is required on the INPUT, see Fig. 8. The 22 µF must have an effective resistance ≤ 5 Ω and a resonant frequency above 500 kHz. 3) A 10 µF load capacitor and a 100 nF decoupling capacitor are required on the regulator OUTPUT for stability. The 10 µF must have an effective series resistance of ≤ 5 Ω and a resonant frequency above 500 kHz. 4) RES must be pulled up externally to VOUTPUT even if it is unused. (Note: RES and EN are used as inputs by EM test.) 5) The OUTPUT current will not apply for all possible combinations of input voltage and output current. Combinations that would require the A6250 to work above the maximum junction temperature (+125 °C) must be avoided. 6) Resistor values close to 1000 k Ω are not recommended for applications working at 125 °C. 7) The thermal resistance specified assumes the package is soldered to a PCB. The termal resistance’s value depends on the PCB’s structure. A typical value of 51 °C/W has been obtained with a dual layer board, with the slug soldered to the heat-sink area of the PCB (see Fig. 22). 2 A6250 |
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