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IR2121 PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 IR2121
部品説明 CURRENT LIMITING LOW SIDE DRIVER
メーカ International Rectifier
ロゴ International Rectifier ロゴ 



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IR2121 Datasheet, IR2121 PDF,ピン配置, 機能
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Data Sheet No. PD-6.018D
IR2121
CURRENT LIMITING LOW SIDE DRIVER
Features
Product Summary
n Gate drive supply range from 12 to 18V
n Undervoltage lockout
n Current detection and limiting loop to limit driven
power transistor current
n Error lead indicates fault conditions and programs
shutdown time
n Output in phase with input
VOFFSET
IO+/-
VOUT
VCSth
5V max.
1A / 2A
12 - 18V
230 mV
Description
The IR2121 is a high speed power MOSFET and
IGBT driver with over-current limiting protection cir-
cuitry. Latch immune CMOS technology enables rug-
gedized monolithic construction. Logic inputs are
compatible with standard CMOS or LSTTL outputs.
The output driver features a high pulse current buffer
stage designed for minimum cross-conduction. The
protection circuitry detects over-current in the driven
power transistor and limits the gate drive voltage.
Cycle-by-cycle shutdown is programmed by an ex-
ternal capacitor which directly controls the time in-
terval between detection of the over-current limiting
condition and latched shutdown. The output can be
used to drive an N-channel power MOSFET or IGBT
in the low side configuration.
ton/off (typ.)
Package
150 & 150 ns
Typical Connection
VCC
VCC
VCC
IN IN OUT
ERR
CS
COM
VS
TO
LOAD
To Order
CONTROL INTEGRATED CIRCUIT DESIGNERS’ MANUAL B-91

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