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PDF SC1633-5CS Data sheet ( Hoja de datos )

Número de pieza SC1633-5CS
Descripción LOW VOLTAGE STEP-UP DC-DC CONVERTER
Fabricantes Semtech Corporation 
Logotipo Semtech Corporation Logotipo



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No Preview Available ! SC1633-5CS Hoja de datos, Descripción, Manual

LOW VOLTAGE STEP-UP
DC-DC CONVERTER
SC1633
January 29, 1998
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
DESCRIPTION
The SC1633 is a high efficiency step up DC-DC
converter. Only four external components are required
to deliver a fixed voltage of 3V, 3.3V, or 5V. Efficiency
beyond 83% can be easily achieved at 70mA load with
2.2V to 3V input voltages.
A logic-controlled shutdown mode is provided for
power saving. Switch current limit can be programmed
with a resistor. The low battery detector can be
configured as a linear regulator or a burst mode
controller providing extremely low supply current
operation.
A switching rate of 120kHz reduces the inductor size -
inductors of 47µH to 150µH inductance are
recommended for most applications.
FEATURES
High efficiency 87%
Power-saving shutdown mode (7µA typical)
Internal 0.8A switch
120kHz switching rate
Adjustable switch current limit
On-chip low battery detector
APPLICATIONS
Pocket organizers
Electronic dictionaries
Cameras
Pagers
Bar code scanners
LCD displays
Battery backup supplies
Portable instruments
BLOCK DIAGRAM
PIN CONFIGURATION
ORDERING INFORMATION
DEVICE(1)
VOLTAGE
SC1633CS
SC1633-3CS
SC1633-5CS
3.3V
3.0V
5.0V
PACKAGE
SO-8
Note:
(1) Add suffix ‘TR’ for tape and reel.
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol Maximum Units
Supply Voltage
Operating
Temperature Range
VIN
TA
7.0
0 to 70
V
°C
Storage
Temperature Range
TSTG
-65 to 125 °C
TYPICAL APPLICATION CIRCUIT
© 1997 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320

1 page




SC1633-5CS pdf
LOW VOLTAGE STEP-UP
DC-DC CONVERTER
January 29, 1998
APPLICATION EXAMPLES (cont.)
SC1633
Figure 2. 5V Output Step-Up Converter
Figure 3. 1-Cell Input 3V Output Step-Up Converter
Figure 4. 4-Cell Input Step-Up/Step-Down Converter
© 1997 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320

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