zxcp330 Zetex Semiconductors plc., zxcp330 Datasheet
zxcp330
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zxcp330 Summary of contents
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... SWITCHED CAPACITOR DC-DC CONVERTER DEVICE DESCRIPTION The ZXCP330 is the first in a series of switched capacitor converters, converting an input voltage from between 2 volts and 4.4 volts to a regulated output voltage of 3.3V with a maximum load current of 40mA. The device operates with one flying capacitor and two small bypass capacitors at input and output making for a very small solution ...
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... ZXCP330 ABSOLUTE MAXIMUM RATINGS ground ground OUT I OUT ELECTRICAL CHARACTERISTICS TEST CONDITIONS (unless otherwise stated = = OUT PARAMETER SYMBOL Input Voltage V IN Output Voltage V OUT Note 1 Maximum Output Current I O(max) Output Short-Circuit Current I SC ...
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... PROVISIONAL ISSUE A - DECEMBER 2001 TYPICAL CHARACTERISTICS 3 ZXCP330 ...
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... ZXCP330 Load transient response Channel 1: V @20mV/DIV OUT Channel 3: I @10mA/DIV OUT V =4.4V; I =0mA to 25mA; Time base=200 s/DIV IN OUT Output ripple Channel 1: V @20mV/DIV OUT V =2.5V; I =40mA; Time base=2 s/DIV IN OUT Start-up time Channel 1: V @1V/DIV OUT Channel 2: E @2V/DIV N V =4.4V; I =40mA ...
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... See Efficiency vs Output current graph in the typical characteristics section. Short circuit/thermal protection When the output of the ZXCP330 is short circuited, the resultant current depends on 2 factors. At low input voltages, the internal resistance of the switches limits the current and so it will increase with input voltage. ...
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... C. To reduce the junction temperature of the device a good thermal connection to the PCB is necessary. This can be achieved by connecting the GND pin of the ZXCP330 to a solid ground plane running on the second layer layer PCB, adding extra heatsinking. ...
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... A operating current. LED driver Below is a typical LED driving application for a cell phone. The ZXCP330 drives a coloured LED with a typical forward voltage of 2.5V from a single Li-on battery input. The LEDs can be driven in parallel to provide backlighting for LCD displays and keypad illumination ...
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... PINOUT TABLE Device Pin Pin description 1 Output voltage 2 Ground 3 Enable 4 Flying capacitor negative pin 5 Input voltage 6 Flying capacitor positive pin ORDERING INFORMATION Device Output voltage (V) ZXCP330E6 3.3 Pin description V OUT GND FLY FLY+ Part marking P330 PROVISIONAL ISSUE A - DECEMBER 2001 8 ...
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... REF 10° Zetex Inc 700 Veterans Memorial Hwy Hauppauge, NY11788 USA Telephone: (631) 360 2222 Fax: (631) 360 8222 9 ZXCP330 Zetex (Asia) Ltd 3701-04 Metroplaza, Tower 1 Hing Fong Road Kwai Fong Hong Kong Telephone: (852) 26100 611 Fax: (852) 24250 494 ...