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LT1161CN Datasheet

  • LT1161CN

  • Quad Protected High-Side MOSFET Driver

  • 291.80KB

  • 12頁

  • LINER

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LT1161
Quad Protected High-Side
MOSFET Driver
FEATURES
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DESCRIPTION
The LT1161 is a quad high-side gate driver allowing the
use of low cost N-channel power MOSFETs for high-side
switching applications. It has four independent switch
channels, each containing a completely self-contained
charge pump to fully enhance an N-channel MOSFET
switch with no external components.
Also included in each switch channel is a drain sense
comparator that is used to sense switch current. When a
preset current level is exceeded, the switch is turned off.
The switch remains off for a period of time set by an
external timing capacitor and then automatically attempts
to restart. If the fault is still present, this cycle repeats until
the fault is removed, thus protecting the MOSFET.
The LT1161 has been specifically designed for harsh
operating environments such as industrial, avionics, and
automotive applications where poor supply regulation
and/or transients may be present. The device will not
sustain damage from supply voltages of 鈥?5V to 60V.
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Fully Enhances N-Channel MOSFET Switches
8V to 48V Power Supply Range
Protected from 鈥?15V to 60V Supply Transients
Individual Short-Circuit Protection
Individual Automatic Restart Timers
Programmable Current Limit, Delay Time, and
Auto-Restart Period
Voltage-Limited Gate Drive
Defaults to OFF State with Open Input
Flowthrough Input to Output Pinout
Available in 20-Lead DIP or SOL Package
APPLICATIONS
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Industrial Control
Avionics Systems
Automotive Switches
Stepper Motor and DC Motor Control
Electronic Circuit Breaker
TYPICAL APPLICATION
24V
C
T
0.1碌F
0.1碌F
0.1碌F
0.1碌F
R
S
0.01鈩?/div>
IRFZ34
+
V
+
T1
T2
T3
T4
IN1
IN2
IN3
IN4
GND
GND
LT1161
V
+
DS1
G1
DS2
G2
DS3
G3
DS4
G4
50碌F
50V
0.50
0.45
0.40
Switch Drop vs Load Current
TOTAL DROP (V)
0.01鈩?/div>
IRFZ34
0.01鈩?/div>
IRFZ34
0.01鈩?/div>
IRFZ34
LOAD
#1
0.35
0.30
0.25
0.20
0.15
LOAD
#2
INPUTS
LOAD
#3
0.10
0.05
0
0
1
3
2
LOAD CURRENT (A)
4
5
1161 TA01
LOAD
#4
1161 F01
Figure 1. Protected Quad High-Side Switch
U
U
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1

LT1161CN 產(chǎn)品屬性

  • LT1161

  • 18

  • 集成電路 (IC)

  • PMIC - MOSFET，電橋驅(qū)動器 - 外部開關(guān)

  • -

  • 高端

  • 非反相

  • 220µs

  • -

  • 4

  • 4

  • -

  • 8 V ~ 48 V

  • 0°C ~ 70°C

  • 通孔

  • 20-DIP（0.300"，7.62mm）

  • 20-PDIP

  • 管件

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