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SS6730 Datasheet(PDF) 9 Page - Silicon Standard Corp. |
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SS6730 Datasheet(HTML) 9 Page - Silicon Standard Corp. |
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9 / 12 page  www.SiliconStandard.com 9 of 12 SS6730 LOAD REGULATION Load regulation is the ability of the regulator to maintain a constant output voltage as the load current changes. To minimize temperature effects, it is a pulsed measurement with the input voltage set to VIN = VOUT + 1 V. The load regulation is specified under the output current step of 0.1mA to 150mA. QUIESCENT CURRENT (I Q) The quiescent current is the current flowing through the ground pin under no load. GROUND CURRENT (I GND) Ground current is the current flowing through the ground pin under loading. STANDBY CURRENT (I STBY) Standby current is the current flowing into the regulator when the output is shutdown by setting V SHDN = 0V, VIN = 8 V. CURRENT LIMIT (I IL) The SS6730 includes a current limiter, to monitor and control the maximum output current to be 300mA typically if the output is shorted to ground. This can protect the device from being damaged. THERMAL PROTECTION The thermal sensor protects the device when the junction temperature exceeds TJ= +155ºC. It signals the shutdown logic, turning off the pass transistor and allowing the IC to cool. After the IC’s junction temperature cools by 15ºC, the thermal sensor will turn on the pass transistor again. Thermal protection is designed to protect the device in the event of fault conditions. For continuous operation do not exceed the absolute maximum junction-temperature rating of TJ= 150ºC, or damage may occur to the device. APPLICATION INFORMATION INPUT-OUTPUT CAPACITORS Linear regulators require input and output capacitors to maintain stability. The recommended minimum value of input capacitor is 0.22 µF. The output capacitor should be selected within the Equivalent Series Resistance (ESR) range shown in the graphs below for stability. Because a ceramic capacitor’s ESR is lower and its electrical characteristics (capacitance and ESR) vary widely over temperature, a tantalum output capacitor is recommended, especially for heavier loads. In general, the capacitor should be at least 1 µF(tantalum) and be rated for the actual ambient operating temperature range. Note: It is very important to check the selected manufacturers’ electrical characteristics (capacitance and ESR) over temperature. NOISE BYPASS CAPACITOR Use a 0.1 µF bypass capacitor at BP pin for low output voltage noise. Increasing the capacitance up to 1 µF will decrease the output noise. However, values above 1 µF provide no performance advantage and are not recommended. 1/26/2004 Rev.2.02 |
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