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SC1565I5T-2.5 Datasheet

  • SC1565I5T-2.5

  • VERY LOW DROPOUT 1.5 AMP REGULATOR WITH ENABLE

  • 10頁

  • SEMTECH   SEMTECH

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VERY LOW DROPOUT 1.5 AMP
REGULATOR WITH ENABLE
October 3, 2000
SC1565
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
DESCRIPTION
The SC1565 is a high performance positive voltage
regulator designed for use in applications requiring very
low dropout voltage at up to 1.5 Amps. 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 thus
allowing the elimination of costly heatsinks.
Additionally, the 5-lead TO-220 and SO-8 versions
have an enable pin to further reduce power dissipation
while shut down. The SC1565 provides excellent
regulation over variations in line, load and temperature.
The SC1565 is available in the popular SO-8 surface
mount package with two internally preset output voltage
options, which are also adjustable using external
resistors. Also available are 5-lead and 3-lead TO-220
2.5V options (fixed output only for the 3-lead option)
and fixed output SOT-223 options.
FEATURES
鈥?
350mV dropout @ 1.5A
鈥?
Adjustable output from 1.2V to 4.8V
(1)
鈥?
2.5V and 1.8V options (adjustable externally using
resistors)
(1)
鈥?
Over current and over temperature protection
鈥?
Enable pin
(1)
鈥?
10碌A(chǔ) quiescent current in shutdown
(1)
鈥?
Low reverse leakage (output to input)
鈥?
Surface mount and through-hole packages
鈥?
Full industrial temperature range
Note:
(1) SO-8 and TO-220-5L packages only.
APPLICATIONS
鈥?
Battery powered systems
鈥?
Motherboards
鈥?
Peripheral cards
鈥?
PCMCIA cards
ORDERING INFORMATION
DEVICE
(1)
PACKAGE
SO-8
SOT-223
TO-220-3
TO-220-5
SC1565IS-X.X.TR
(2)
SC1565IST-X.X.TR
(2)
SC1565IT-X.X
(3)
SC1565I5T-X.X
(3)
Notes:
(1) Where -X.X denotes voltage options. Available
voltages are: 2.5V and 1.8V. Output voltage can be ad-
justed (except SOT-223 and TO-220-3) using external
resistors, see Pin Description.
(2) Only available in tape and reel packaging. A reel
contains 2500 devices.
(3) Only available in tube packaging (no suffix re-
quired).
TYPICAL APPLICATIONS
U1
ENABLE
VIN
VO
1
2
3
4
R1
EN
VIN
VO
ADJ
GND
GND
GND
GND
8
VIN
7
6
5
3
C1
R2
C2
ENABLE
1
2
U1
SC1565I5T-2.5
VIN
EN
VO
GND ADJ
4
5
R1
VO
SC1565IS-X.X
C1
C2
R2
VO
1.200 (R1
+
R2)
R2
U1
ENABLE
VIN
VO
1
2
3
4
C1
C2
EN
VIN
VO
ADJ
GND
GND
GND
GND
8
7
6
5
GND
C1
2
C2
=
1.200 (R1
+
R2)
R2
Volts
VO
=
Volts
1
U1
SC1565IT-2.5V and SC1565IST-X.X
3
VIN
VO
VIN
VO
SC1565IS-X.X
Notes:
(1) Maximum VO setpoint for 1.8V parts = 5.4V.
(2) This device is designed to operate with ceramic input and output capacitors.
1
漏 2000 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320

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