SC1460
SC1460 is 5mA CAPLESSTM CHARGE PUMP manufactured by SEMTECH.
DESCRIPTION
The SC1460 is a versatile charge pump designed for use in battery operated power supply applications requiring up to 5m A. 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 100u A 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 Resistance Junction to Ambient Operating Temperature Symbol VIN VO θJA TA TJ TSTG TL Maximum -0.3 to + 4 -0.3 to +6.0 410 0 to +70 0 to 125 -65 to +150 300 Units V V °C/W °C °C °C °C
PIN CONFIGURATION
(Top View)
Temperature Range Storage Temperature Lead Temperature (Soldering) 10 seconds
3 Lead SOT-23
1 © 1999 SEMTECH CORP. 652 MITCHELL ROAD NEWBURY PARK CA 91320
5m A CAPLESS
CHARGE PUMP
PRELIMINARY...
