SC1633-3CS PDF даташит
Спецификация SC1633-3CS изготовлена «Semtech Corporation» и имеет функцию, называемую «LOW VOLTAGE STEP-UP DC-DC CONVERTER». |
|
Детали детали
Номер произв | SC1633-3CS |
Описание | LOW VOLTAGE STEP-UP DC-DC CONVERTER |
Производители | Semtech Corporation |
логотип |
7 Pages
No Preview Available ! |
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
No Preview Available ! |
LOW VOLTAGE STEP-UP
DC-DC CONVERTER
January 29, 1998
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, TA = 25°C, VIN = 3.0V
Parameter
Input Voltage
VIN
Output Voltage
SC1633
SC1633-3
SC1633-5
Switch Off Current
No Load Current
SC1633/SC1633-3
SC1633-5
Shutdown Mode Current
Shutdown Recovery Time
Efficiency
SC1633/SC1633-3
SC1633-5
VIN=2.5V
Line Regulation
SC1633
SC1633-3
SC1633-5
Load Regulation
SC1633/SC1633-3
SC1633-5
VIN=2.0 - 3.3V
VIN=2.0 - 3.0V
VIN=2.2 - 4.5V
Oscillator Frequency
LBI Pin Trip Point
LBO “On Resistance”
SW “On Resistance”
SC1633/SC1633-3
SC1633-5
VIN = 2V
SW Off Leakage
Input Pin Bias Current
Output Pin Leakage
IL
IL = 70mA
IL=70mA
IL=70mA
IL=40mA
IL=1mA - 70mA
Min
1.8
3.16
2.88
4.80
90
1.17
SC1633
Typ
3.30
3.00
5.00
105
160
250
7
1.8
87
86
0.6
0.6
0.5
0.6
0.5
120
1.22
45
1.75
1.25
Max Units
7.0 V
3.44 V
3.12
5.20
140 µA
µA
15 µA
msec
%
%VOUT
150
1.27
%VOUT
kHz
V
Ω
Ω
1 µA
10 nA/Pin
10 nA/Pin
© 1997 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
No Preview Available ! |
LOW VOLTAGE STEP-UP
DC-DC CONVERTER
January 29, 1998
TYPICAL PERFORMANCE CHARACTERISTICS
SC1633
© 1997 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
Скачать PDF:
[ SC1633-3CS.PDF Даташит ]
Номер в каталоге | Описание | Производители |
SC1633-3CS | LOW VOLTAGE STEP-UP DC-DC CONVERTER | Semtech Corporation |
Номер в каталоге | Описание | Производители |
TL431 | 100 мА, регулируемый прецизионный шунтирующий регулятор |
Unisonic Technologies |
IRF840 | 8 А, 500 В, N-канальный МОП-транзистор |
Vishay |
LM317 | Линейный стабилизатор напряжения, 1,5 А |
STMicroelectronics |
DataSheet26.com | 2020 | Контакты | Поиск |