SC1517-5

MICROPOWER, REGULATED 5V CHARGE PUMP October 3, 2000 SC1517-5 TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com DESCRIPTION The SC1517-5 is pin compatible with LTC1517-5. This versatile charge pump produces a regulated 5V output from an input voltage ranging from 2.7V to 5V. The Extremely low operating current (typically 10µA with no load) prolongs battery usage time. The small device footprint and the low external parts count (one 0.1µF flying capacitor and two small bypass capacitors at VIN and VOUT) make the part ideally suited for compact circuit design. The SC1517-5 charge pump can be used for applications that require up to 20mA (3V < VIN < 5V) of output current, while providing a regulated 5V output voltage. During short circuit a current limit circuitry provides protection, while the thermal shutdown capability cycles VOUT to prevent device failure. The SC1517-5 is available in a 5 lead SOT-23 package. FEATURES = = = = = = = = = = = Ultra low power: ICC = 10µA typ Soft start / Short circuit Current limit Thermal protected 5V+4% Regulated output VIN Range: 2.7V to 5V Output current: 10mA (VIN > 2.7V) 20mA (VIN > 3V) No inductors Ultra small application circuit 800kHz switching frequency Surface mount packaging (5 pin SOT-23) All specifications rated over full temperature range (-40°C to 85°C) APPLICATIONS = Cellular telephones = Battery-operated equipment = Local power supplies = Handheld instruments = PCMCIA supplies ORDERING INFORMATIO...