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PDF SC1453 Datasheet ( Hoja de datos )

Número de pieza SC1453
Descripción 150mA Ultra Low Dropout Regulator with Low Noise Bypass
Fabricantes Semtech Corporation 
Logotipo Semtech Corporation Logotipo



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SC1453 Hoja de datos, Descripción, Manual
SC1453
150mA Ultra Low Dropout
Regulator with Low Noise Bypass
POWER MANAGEMENT
Description
Features
PRELIMINARY
The SC1453 is a low dropout linear regulator that oper-
ates from a +2.5V to +6.5V input range and delivers up
to 150mA. A PMOS pass transistor allows the low 75µA
supply current to remain independent of load, making
these devices ideal for battery operated portable
equipment such as cellular phones, cordless phones and
personal digital assistants.
The SC1453 has a bandgap reference bypass pin for
very low noise operation - a 10nF (typ.) capacitor is
connected between this pin and ground. Other features
include low powered shutdown, short circuit protection,
thermal shutdown protection and reverse battery
protection. The SC1453 comes in the tiny 5 lead SOT-23
package.
u “2982/5205” compatible pinout
u Guaranteed 150 mA output current
u Very small external components - designed to work
with ceramic capacitors
u Low 25µVRMS output noise
u Very low supply current
u Thermal overload protection
u Reverse battery protection
u Low power shutdown
u Full industrial temperature range
u Surface mount packaging (5 pin SOT-23)
Applications
u Battery Powered Systems
u Cellular Telephones
u Cordless Telephones
u Personal Digital Assistants
u Portable Instrumentation
u Modems
u PCMCIA cards
Typical Application Circuit
VIN
C1
1uF
U1
1 IN
SC1453
OUT 5
3 EN GND BYP 4
2
C2
10nF
VOUT
C3
1uF
Revision 2, December 2000
1
www.semtech.com

1 page

SC1453 pdf
POWER MANAGEMENT
Outline Drawing - SOT-23-5
SC1453
PRELIMINARY
Land Pattern - SOT-23-5
Contact Information
Semtech Corporation
Power Management Products Division
652 Mitchell Rd., Newbury Park, CA 91320
Phone: (805)498-2111 FAX (805)498-3804
ã 2000 Semtech Corp.
5
www.semtech.com

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