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PDF SC1563ISK-2.8 Datasheet ( Hoja de datos )

Número de pieza SC1563ISK-2.8
Descripción VERY LOW DROPOUT/ LOW QUIESCENT 500mA REGULATOR
Fabricantes Semtech Corporation 
Logotipo Semtech Corporation Logotipo



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SC1563ISK-2.8 Hoja de datos, Descripción, Manual
VERY LOW DROPOUT, LOW
QUIESCENT 500mA REGULATOR
SC1563
PRELIMINARY - September 11, 2000
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
DESCRIPTION
The SC1563 is a high performance positive voltage
regulator designed for use in applications requiring
very low dropout voltage at up to 500 milliamps. Since
it has superior dropout characteristics compared to
regular LDOs, it can be used to supply 2.5V on
motherboards or 2.8V on peripheral cards from the
3.3V supply with no heatsink. Additionally, the SC1563
has a shutdown pin, to further reduce power
dissipation while shut down. The SC1563 provides
excellent regulation over variations in line, load and
temperature.
The SC1563 is available as a five terminal fixed or
adjustable output voltage device with enable. The
device is available in a 5-pin SOT-23 package and an
8-pin MSOP package for higher power dissipation/
lower junction temperature.
FEATURES
= 450mV dropout @ 500mA
= Designed to operate with ceramic capacitors
= Adjustable output from 1.200V to 3.3V
= Multiple output voltage options (all parts also
adjustable externally using resistors)
= Over current and over temperature protection
= Enable pin
= 1µA quiescent current in shutdown
= Low reverse leakage (output to input)
= Full industrial temperature range
APPLICATIONS
= Battery powered systems
= Motherboards
= Peripheral cards
= PCMCIA cards
ORDERING INFORMATION
DEVICE(1)(2)(3)
PACKAGE
SC1563ISK-X.XTR
SOT-23-5L
SC1563IMS-X.XTR
MSOP-8
TYPICAL APPLICATION
Notes:
(1) Where -X.X denotes voltage options. Available
voltages are: 1.8V, 2.5V, 2.8V, 3.0V, 3.1V and 3.3V.
(2) Output voltage can be adjusted using external re-
sistors, see Pin Description.
(3) Only available in tape and reel packaging. A reel
contains 2500 devices (MSOP-8) or 3000 devices
(SOT-23-5L).
VIN
SHDN
Internally Preset Output Voltage
U1 SC1563ISK-X.X
5 VIN
VO 4
1 SHDN GND ADJ
VO (X.XV)
C1 2 3
C2
VIN
SHDN
Externally Set Output Voltage
U1 SC1563ISK-X.X
5 VIN
VO 4
1 SHDN GND ADJ
R1
C1 2 3
R2
VO
C2
VO = 1.200 (R1 + R2) Volts
R2
© 2000 SEMTECH CORP.
1
652 MITCHELL ROAD NEWBURY PARK CA 91320

1 page

SC1563ISK-2.8 pdf
VERY LOW DROPOUT, LOW
QUIESCENT 500mA REGULATOR
PRELIMINARY - September 11, 2000
TYPICAL APPLICATION (Externally Set Output Voltage)(1)(2)
VIN
SHDN
U1 SC1563IS-X.X
5
VIN
4
VO
1
SHDNGND ADJ
C1 2 3
1uF
VO
R1
C2
10uF
R2
SC1563
VO = 1.200 (R1 + R2) Volts
R2
TYPICAL APPLICATIONS (Internally Set Output Voltage)(2)
VIN
SHDN
U1 SC1563IS-X.X
5
VIN
4
VO
1
SHDN GND ADJ
VO (X.XV)
C1 2 3
1uF
C2
10uF
VIN
SHDN
VO (X.XV)
C1 C2
1uF 10uF
U1 SC1563IMS-X.X
1
VIN
8
GND
2
SHDN
7
GND
3
ADJ
6
GND
4
VO
5
GND
Notes:
(1) Maximum VO setpoint is 3.3V.
(2) This device is designed to operate with ceramic input and output capacitors.
© 2000 SEMTECH CORP.
5
652 MITCHELL ROAD NEWBURY PARK CA 91320

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