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PDF SC1456 Datasheet ( Hoja de datos )

Número de pieza SC1456
Descripción Dual 150mA ULTRA LOW DROPOUT/ LOW NOISE REGULATOR
Fabricantes Semtech Corporation 
Logotipo Semtech Corporation Logotipo



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SC1456 Hoja de datos, Descripción, Manual
Dual 150mA ULTRA LOW DROPOUT,
LOW NOISE REGULATOR
SC1456
PRELIMINARY - June 15, 2000
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
DESCRIPTION
The SC1456 contains two low dropout linear regulators
that operate from a +2.5V to +6V input range and
deliver up to 150mA. PMOS pass transistors allow a
low 110µA supply current per device to remain
independent of load, making these devices ideal for
battery operated portable equipment such as cellular
phones, cordless phones and personal digital
assistants.
Each device can be powered from a separate supply
voltage or the same supply voltage for maximum
flexibility. The output voltage of each device can be
preset or adjusted with an external resistor divider.
Other features include independant low powered
shutdown, short circuit protection, thermal shutdown
protection and reverse battery protection for each
regulator. The SC1456 comes in the tiny 10 lead MSOP
package.
ORDERING INFORMATION
Part Number
SC1456XIMSTR(1)(2)
Package
MSOP-10
FEATURES
Two guaranteed 150 mA outputs
Designed to operate with ceramic capacitors
Fixed or adjustable outputs
Very small external components
Low 75µVRMS output noise
Very low supply currents
Thermal overload protection
Reverse battery protection
Individual low power shutdown
Surface mount packaging (10 pin MSOP)
Full industrial temperature range
APPLICATIONS
Battery Powered Systems
Cellular Telephones
Cordless Telephones
Personal Digital Assistants
Portable Instrumentation
Modems
PCMCIA cards
Notes:
(1) Where X denotes voltage options - see table on page 4. Consult factory for other voltage options.
(2) Only available in tape and reel packaging. A reel contains 2500 devices.
TYPICAL APPLICATIONS
VIN1
VIN2
(OR VIN1)
C1 C2
1uF 1uF
U1
10
IN1
1 EN1
5 IN2
6 EN2
SC1456
OUT1
OUT2
SET1
SET2
9
4
3
8
GND GND
27
VOUT1 = PRESET
VOUT2 = PRESET
C3 C4
1uF 1uF
VIN1
VIN2
(OR VIN1)
C1 C2
1uF 1uF
Output Voltages Set Internally
U1
10
IN1
1 EN1
5 IN2
6
EN2
SC1456
OUT1
OUT2
SET1
SET2
9
4
3
8
R1
GND GND
27
R2
VOUT1 (SEE EQUATION)
VOUT2 = PRESET
C3
2.2uF
C4
1uF
VOUT1
=
1.250
1 +
R1
R2

R2 120k
© 2000 SEMTECH CORP.
Output 1 Set Externally and Output 2 Set Internally
1
652 MITCHELL ROAD NEWBURY PARK CA 91320

1 page

SC1456 pdf
PRELIMINARY - June 15, 2000
DEVICE OUTLINE - MSOP-10
Dual 150mA ULTRA LOW DROPOUT,
LOW NOISE REGULATOR
SC1456
ECN 00-1167
© 2000 SEMTECH CORP.
5
652 MITCHELL ROAD NEWBURY PARK CA 91320

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