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SC1517ISK-5TR Datasheet

  • SC1517ISK-5TR

  • MICROPOWER, REGULATED 5V CHARGE PUMP

  • 10頁(yè)

  • SEMTECH   SEMTECH

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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 10碌A(chǔ) with no
load) prolongs battery usage time. The small device
footprint and the low external parts count (one 0.1碌F
flying capacitor and two small bypass capacitors at V
IN
and V
OUT
) 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 < V
IN
< 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 V
OUT
to prevent device failure. The
SC1517-5 is available in a 5 lead SOT-23 package.
FEATURES
鈥?
鈥?
鈥?
鈥?
鈥?
鈥?
鈥?
鈥?
鈥?
鈥?
鈥?
Ultra low power: I
CC
= 10碌A(chǔ) typ
Soft start / Short circuit Current limit
Thermal protected
5V+4% Regulated output
V
IN
Range: 2.7V to 5V
Output current:
10mA (V
IN
> 2.7V)
20mA (V
IN
> 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擄C to 85擄C)
APPLICATIONS
鈥?
Cellular telephones
鈥?
Battery-operated equipment
鈥?
Local power supplies
鈥?
Handheld instruments
鈥?
PCMCIA supplies
ORDERING INFORMATION
Device
(1)
Package
SOT-23-5
Temp. Range (T
A
)
-40擄 to 85擄C
SC1517ISK-5.TR
TYPICAL APPLICATION SCHEMATIC
C1 =
Notes:
(1) Only available in tape and reel packaging. A reel
contains 3000 devices
CIN =
= COUT
Note :
Ceramic capacitors used for improved performance, Low ESR Tantalum with ESR < 0.5 Ohms could also be used.
1
漏 2000 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320

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