SC1460

5mA CAPLESS TM CHARGE PUMP SC1460 PRELIMINARY - July 6, 1999 TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com DESCRIPTION The SC1460 is a versatile charge pump designed for use in battery operated power supply applications requiring up to 5mA. It enables a simple low current boost circuit to be implemented without the costly inductors or capacitors associated with regular switching circuits. Features include internal MOSFETs, control circuitry and charge pump capacitor, requiring only two external capacitors for a total solution. With a very high operating frequency (8MHz free running at 2.5V in typically), the SC1460 does not require large input or output capacitors, and therefore uses very little board space. Two versions of the SC1460 are available: the -3.3 produces a regulated 3.3V output from 2.5V in, and the -5.0 produces a regulated 5V output from 3.3V in. It is supplied in the popular 3 lead, SOT-23 package. FEATURES Small size - SOT-23 package 4% voltage accuracy Typical 100uA quiescent current APPLICATIONS Handheld Power Supplies PDA Power Supplies Notebook Power Supplies Peripheral Card Supplies Industrial Power Supplies High Density DC/DC Conversion ORDERING INFORMATION BLOCK DIAGRAM DEVICE (1)(2) PACKAGE SOT-23 SC1460CSK-X.X Notes: (1) Where X.X denotes voltage options. Available voltages are: 3.3V and 5.0V. (2) Add suffix ‘TR’ for tape and reel. ABSOLUTE MAXIMUM RATINGS Parameter Supply Voltage Output Voltage Thermal...