LOW VOLTAGE MULTI-MODE
DC-DC CONVERTER
January 30, 1998
SC1630
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com
DESCRIPTION
The SC1630 is a DC-DC converter designed to drive
an external power switch for more flexibility, especially
in higher voltage and larger power applications.
Typically six components are required to set up a
step-up configuration easily achieving an efficiency
beyond 80%. A few more components are required to
set up a step down configuration delivering 4A load
current with 83% typical efficiency, 86% at 2A load,
and 300碌A quiescent current.
The output voltage can be internally set to 5V or
externally set to an arbitrary value below breakdown
voltage of the power switch. Logic-controlled
shutdown mode is provided for power-saving. The low
battery detector can also be configured as a linear
regulator.
A 120kHz switching rate reduces the inductor size.
Inductors of 25碌H to 50碌H inductance are
recommended for most applications.
FEATURES
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Default +5V output voltage
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Adjustable output voltage with two resistors
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Power-saving shutdown mode (7碌A typical)
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120kHz switching rate
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On-chip low battery detector
BLOCK DIAGRAM
APPLICATIONS
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Palmtop and notebook computers
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Battery charger supply
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Cellular telephones
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LCD contrast supply
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Flash memory programmer
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Battery backup supplies
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Portable instruments
PIN CONFIGURATION
ORDERING INFORMATION
DEVICE
(1)
PACKAGE
SO-8
SC1630CS
Note:
(1) Add suffix 鈥楾R鈥?for tape and reel.
ABSOLUTE MAXIMUM RATINGS
Parameter
Supply Voltage
Operating
Temperature Range
Storage Temperature
Range
Symbol
V
IN
T
A
T
STG
Maximum
7.0
0 to 70
-65 to 125
Units
V
擄C
擄C
漏 1997 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
SC1630相關型號PDF文件下載
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英文版
SC1602_ETC.pdf
ETC
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英文版
THYRISTOR MODULE|TRIAC
ETC
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英文版
THYRISTOR MODULE|TRIAC
ETC
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英文版
THYRISTOR MODULE|TRIAC
ETC
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英文版
THYRISTOR MODULE|TRIAC
ETC
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英文版
THYRISTOR MODULE|TRIAC
ETC
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英文版
THYRISTOR MODULE|TRIAC
ETC
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英文版
HIGH-EFFICIENCY STEP-UP DC-DC CONVERTER
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英文版
Semtech Corpora...
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英文版
Semtech Corpora...
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英文版
LOW VOLTAGE MULTI-MODE DC-DC CONVERTER
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英文版
LOW VOLTAGE STEP-UP DC-DC CONVERTER
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英文版
LOW VOLTAGE STEP-UP DC-DC CONVERTER
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英文版
HIGH-VOLTAGE INVERTING DC-DC CONVERTER
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英文版
MICROPOWER INVERTING DC-DC CONVERTER
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英文版
THYRISTOR MODULE|TRIAC
ETC
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英文版
THYRISTOR MODULE|TRIAC
ETC
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英文版
THYRISTOR MODULE|TRIAC
ETC
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英文版
THYRISTOR MODULE|TRIAC
ETC
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英文版
THYRISTOR MODULE|TRIAC
ETC
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