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L4949N Datasheet

  • L4949N

  • MULTIFUNCTION VERY LOW DROPOUT VOLTAGE REGULATOR

  • 8頁

  • ONSEMI

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Order this document from L4949/D
Multifunction Very Low
Dropout Voltage Regulator
The L4949 is a monolithic integrated 5.0 V voltage regulator with a very
low dropout and additional functions such as power鈥搊n reset and input
voltage sense.
It is designed for supplying the micro鈥揷omputer controlled systems
especially in automotive applications.
鈥?/div>
Operating DC Supply Voltage Range 5.0 V to 28 V
L4949
MULTIFUNCTION
VERY LOW DROPOUT
VOLTAGE REGULATOR
SILICON MONOLITHIC
INTEGRATED CIRCUIT
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Transient Supply Voltage Up to 40 V
Extremely Low Quiescent Current in Standby Mode
High Precision Standby Output Voltage 5.0 V
鹵1%
Output Current Capability Up to 100 mA
Very Low Dropout Voltage Less Than 0.4 V
Reset Circuit Sensing The Output Voltage
Programmable Reset Pulse Delay With External Capacitor
Voltage Sense Comparator
Thermal Shutdown and Short Circuit Protections
8
1
N SUFFIX
PLASTIC PACKAGE
CASE 626
8
1
D SUFFIX
PLASTIC PACKAGE
CASE 751
Representative Block Diagram
Output
Voltage (Vout)
VZ 3
8
Supply
Voltage (VCC)
1
Preregulator
6.0 V
CT 4
PIN CONNECTIONS
V
CC
1
2.0
碌A(chǔ)
Reset
6
+
鈥?/div>
Reset
8
7
6
5
Vout
So
Reset
Gnd
S
i
VZ
CT
2
3
4
Regulator
Sense
Input
(Si)
2
Vs
2.0 V
Sense
Output
(So)
7
(Top View)
+
鈥?/div>
1.23 Vref
Sense
1.23 V
ORDERING INFORMATION
Device
Operating
Temperature Range
TJ = 鈥?0擄 to +125擄C
Package
DIP鈥?
SO鈥?
Rev 1
5
Gnd
L4949N
L4949D
漏
Motorola, Inc. 1998

L4949N 產(chǎn)品屬性

  • 50

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - 線性

  • -

  • 正，固定式

  • 5V

  • 最高 28V

  • 0.3V @ 100mA

  • 1

  • 100mA

  • -40°C ~ 125°C

  • 通孔

  • 8-DIP（0.300"，7.62mm）

  • 8-PDIP

  • 管件

  • L4949NOS

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