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LTC1154CS8 Datasheet

  • LTC1154CS8

  • High-Side Micropower MOSFET Driver

  • 334.50KB

  • 16頁

  • LINER

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LTC1154
High-Side Micropower
MOSFET Driver
FEATURES
s
s
s
s
s
s
s
s
s
DESCRIPTIO
Fully Enhances N-Channel Power MOSFETs
8碌A(chǔ) I
Q
Standby Current
85碌A(chǔ) I
Q
ON Current
No External Charge Pump Capacitors
4.5V to 18V Supply Range
Short-Circuit Protection
Thermal Shutdown via PTC Thermistor
Status Output Indicates Shutdown
Available in 8-Pin SOIC
The LTC1154 single high-side gate driver allows using low
cost N-channel FETs for high-side switching applications.
An internal charge pump boosts the gate drive voltage
above the positive rail, fully enhancing an N-channel MOS
switch with no external components. Micropower opera-
tion, with 8碌A(chǔ) standby current and 85碌A(chǔ) operating cur-
rent, allows use in virtually all systems with maximum
efficiency.
Included on chip is programmable over-current sensing.
A time delay can be added to prevent false triggering on
high in-rush current loads. An active high shutdown input
is also provided and interfaces directly to a standard PTC
thermistor for thermal shutdown. An open-drain output is
provided to report switch status to the
碌P.
An active low
enable input is provided to control multiple switches in
banks.
The LTC1154 is available in both 8-pin DIP and 8-pin SOIC
packages.
APPLICATI
s
s
s
s
s
s
S
Laptop Computer Power Switching
SCSI Termination Power Switching
Cellular Telephone Power Management
Battery Charging and Management
High-Side Industrial and Automotive Switching
Stepper Motor and DC Motor Control
TYPICAL APPLICATI
Ultra-Low Voltage Drop High-Side Switch
with Short-Circuit Protection
5V
51k
IN
碌P
EN
LTC1154
STATUS
GND
G
SD
IRLR024
V
S
200k**
DS
SUPPLY CURRENT (碌A(chǔ))
50
0.036鈩?
0.1碌F**
2.7A MAX
45
40
35
30
25
20
15
10
5
5V
LOAD
ALL COMPONENTS SHOWN ARE SURFACE MOUNT.
* IMS026 INTERNATIONAL MANUFACTURING SERVICE, INC. (401) 683-9700
** NOT REQUIRED IF LOAD IS RESISTIVE OR INDUCTIVE.
LTC1154 鈥?TA01
0
0
5
10
15
SUPPLY VOLTAGE (V)
20
LTC1153 鈥?TA02
U
Standby Supply Current
V
IN
= 0V
T
J
= 25擄C
UO
UO
1

LTC1154CS8 產(chǎn)品屬性

  • LTC1154

  • 100

  • 集成電路 (IC)

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

  • -

  • 高端

  • 非反相

  • 160µs

  • -

  • 1

  • 1

  • -

  • 4.5 V ~ 18 V

  • 0°C ~ 70°C

  • 表面貼裝

  • 8-SOIC（0.154"，3.90mm 寬）

  • 8-SOIC

  • 管件

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