SC1517-5 查看數據表（PDF） - Semtech Corporation
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SC1517-5 Datasheet PDF : 10 Pages
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MICROPOWER, REGULATED 5V
CHARGE PUMP
SC1517-5
October 3, 2000
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
TYPICAL APPLICATION SCHEMATIC
ORDERING INFORMATION
Device(1)
SC1517ISK-5.TR
Package Temp. Range (TA)
SOT-23-5
-40° to 85°C
Notes:
(1) Only available in tape and reel packaging. A reel
contains 3000 devices
C1 =
CIN =
= COUT
Note :
Ceramic capacitors used for improved performance, Low ESR Tantalum with ESR < 0.5 Ohms could also be used.
© 2000 SEMTECH CORP.
1
652 MITCHELL ROAD NEWBURY PARK CA 91320
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