رگولاتور ولتاژ
L4978D
step down monolithic power switching regulator delivering 2A at a voltage between 3.3V and 50V
کیفیت: ORIGINAL(distributor) پکیج: SOIC-16
قیمت تک فروشی 1,282,020 ریال
قیمت عمده 1,167,720 ریال (10 به بالا)
قیمت ویژه 1,144,860 ریال (100 به بالا)
قیمت فوق العاده1,133,430 ریال (1000 به بالا)
 قیمت تک فروشی 1.193 تتر با تخفیف
6.665.885.82
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حداکثر دماي کاري |
150 سانتيگراد |
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حداقل دماي کاري |
-40 سانتيگراد |
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توضیحات
آي سي L4978D يک رگولاتور ولتاژ (V-REGULATOR SMD) SOIC16 مي باشد .
-وضعيت توليد : فعال
-نوع نصب : SMD
-دماي کاري(سانتيگراد) : -40 تا 150 درجه
-مشخصات تغذيه
-ولتاژ تغذيه تکي : 8تا 55 ولت
-مشخصات خروجي مبدل / رگولاتور
-نوع خروجي رگولاتور : Adjustable
-تعداد خروجي : تکي
-پلاريته ولتاژ خروجي : مثبت
-ساير مشخصات محصول
-نوع خروجي : Step-Down
-ساختار خروجي : Buck
-محدوده فرکانس سوييچينگ : 100 تا 300 کيلوهرتز
Description
The L4978 is a step down monolithic power
switching regulator delivering 2A at a voltage between 3.3V and 50V (selected by a simple external
divider). Realized in BCD mixed technology, the
device uses an internal power D-MOS transistor
to obtain very high
efficency and high switching speed.
A switching frequency up to 300KHz is achievable
(the maximum power dissipation of the packages
must be observed). A wide input voltage range between 8V to 55V and output voltages regulated
from 3.3V to 50V cover the majority of today’s applications. Features of this new generations of DCDC converter include pulse-by-pulse current limit,
hiccup mode for short circuit protection, voltage
feedforward regulation, soft-start, protection
against feedback loop disconnection, inhibit for
zero current consumption and thermal shutdown.
The device is available in plastic dual in line, DIP8 for standard assembly, and SO16W for SMD assembly
PROTECTION AGAINST FEEDBACK DISCONNECTION
INHIBIT FOR ZERO CURRENT CONSUMPTION
SOFT START FUNCTION
THERMAL SHUTDOWN
ZERO LOAD CURRENT OPERATION
VOLTAGE FEEDFORWARD
UP TO 2A STEP DOWN CONVERTER
PRECISE 3.3V (±1%) INTERNAL REFERENCE VOLTAGE
OPERATING INPUT VOLTAGE FROM 8V TO 55V
SWITCHING FREQUENCY ADJUSTABLE UP TO 300KHz
INTERNAL CURRENT LIMITING (PULSE-BYPULSE AND HICCUP MODE)
OUTPUT VOLTAGE ADJUSTABLE FROM 3.3V TO 50V
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