SC1633 データシートの表示（PDF） - Semtech Corporation
部品番号
コンポーネント説明
一致するリスト
SC1633 Datasheet PDF : 7 Pages
| |||
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
VIN
Operating
Temperature Range
TA
7.0
V
0 to 70
°C
Storage
Temperature Range
TSTG
-65 to 125 °C
TYPICAL APPLICATION CIRCUIT
© 1997 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
Share Link: 