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L4943, L4945, L4947

L4943, L4945, L4947 Selling Leads, Datasheet

MFG:STMicroelectronics  Category:Integrated Circuits (ICs)  Package Cooled:ZIP  D/C:08+/09+

L4945 Picture

L4943, L4945, L4947 Datasheet download

Five Points

Part Number: L4945

Category: Integrated Circuits (ICs)

MFG: STMicroelectronics

Package Cooled: ZIP

D/C: 08+/09+

Description: IC REG LDO 5V 0.5A PENTAWATT

 

 
 
 
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  • L4943

  • Vendor: ST D/C: 10+& Qty: ZIP  Adddate: 2024-03-28
  • Inquire Now
  • V-2 International Co.,Ltd   China
    Contact: Ms.VinniaXia   MSN:vinniaxia@hotmail.com
    Tel: 852-852-27592923
    Fax: 86-0755-83370588
    (0)
  • L4943

  • Vendor: ST Pack: ZIP D/C: 05+& Qty: 1000 Note: 2C006  Adddate: 2024-03-28
  • Inquire Now
  • Kejin Electronics(HK) Limited   China
    Contact: Ms.JoyLin   MSN:joylin-kejinic@hotmail.com
    Tel: 86-755-83997989
    Fax: 86-755-83282993
    (5)
  • L4901A

  • Vendor: ST Pack: TO D/C: 94+& Qty: 472  Adddate: 2024-03-28
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  • YOUWEI ELECTRONICS CO., Ltd   China
    Contact: Mr.JACKHU   MSN:youweidz@hotmail.com
    Tel: 86-0755-33062827
    Fax: 86-0755-33062897
    (1)
  • L4901A

  • Vendor: ST Pack: TO D/C: 05+& Qty: 1000 Note: 2C006  Adddate: 2024-03-28
  • Inquire Now
  • Kejin Electronics(HK) Limited   China
    Contact: Ms.JoyLin   MSN:joylin-kejinic@hotmail.com
    Tel: 86-755-83997989
    Fax: 86-755-83282993
    (5)
  • L4901A

  • Vendor: ST D/C: 00+&   Adddate: 2024-03-28
  • Inquire Now
  • orientelec   China
    Contact: Ms.Jessica Ren   MSN:jessica@orientelec.cn
    Tel: 86-10-62103873/62101821
    Fax: 86-10-62102720
    (5)
  • L4901A

  • Vendor: ST Qty: 781 Note: New,unused in stock and at lower price in perfect quality!!!  Adddate: 2024-03-28
  • Inquire Now
  • Beijing huadong shiji teconolgy Co.,Lt   China
    Contact: Mr.zimingjiang   MSN:hddz-006@hotmail.com
    Tel: 86-010-62575888 805
    Fax: 86-010-62575899
    (5)

About L4943

PDF/DataSheet Download

Datasheet: L4943

File Size: 116641 KB

Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Download : Click here to Download

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  • L4945

  • Vendor: ST Pack: TO D/C: 06+& Qty: 250  Adddate: 2024-03-28
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  • Wide Key International Ltd   China
    Contact: Ms.Shirley   MSN:widekeytbf@hotmail.com
    Tel: 86-27-87741226
    Fax: 86-27-87741227
    (67)
  • L4945

  • Vendor: ST Pack: TO D/C: 08+& Qty: 200 Note: hot offer,special price  Adddate: 2024-03-28
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  • Easywin electronics enterprise Ltd.   China
    Contact: Mr.Leonlu   MSN:fieleon@hotmail.com
    Tel: 0086-0755-82544219
    Fax: 0086-0755-82544202
    (0)
  • L4901A

  • Vendor: ST Pack: TO D/C: 94+& Qty: 472  Adddate: 2024-03-28
  • Inquire Now
  • YOUWEI ELECTRONICS CO., Ltd   China
    Contact: Mr.JACKHU   MSN:youweidz@hotmail.com
    Tel: 86-0755-33062827
    Fax: 86-0755-33062897
    (1)
  • L4901A

  • Vendor: ST Pack: TO D/C: 05+& Qty: 1000 Note: 2C006  Adddate: 2024-03-28
  • Inquire Now
  • Kejin Electronics(HK) Limited   China
    Contact: Ms.JoyLin   MSN:joylin-kejinic@hotmail.com
    Tel: 86-755-83997989
    Fax: 86-755-83282993
    (5)
  • L4901A

  • Vendor: ST D/C: 00+&   Adddate: 2024-03-28
  • Inquire Now
  • orientelec   China
    Contact: Ms.Jessica Ren   MSN:jessica@orientelec.cn
    Tel: 86-10-62103873/62101821
    Fax: 86-10-62102720
    (5)

About L4945

PDF/DataSheet Download

Datasheet: L4945

File Size: 44729 KB

Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Download : Click here to Download

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L4947 Suppliers

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  • L4947

  • Vendor: ST Pack: TO D/C: 94+& Qty: 102  Adddate: 2024-03-28
  • Inquire Now
  • YOUWEI ELECTRONICS CO., Ltd   China
    Contact: Mr.JACKHU   MSN:youweidz@hotmail.com
    Tel: 86-0755-33062827
    Fax: 86-0755-33062897
    (1)
  • L4947

  • Vendor: ST Pack: ZIP D/C: 05+& Qty: 30000 Note: 2C006  Adddate: 2024-03-28
  • Inquire Now
  • Kejin Electronics(HK) Limited   China
    Contact: Ms.JoyLin   MSN:joylin-kejinic@hotmail.com
    Tel: 86-755-83997989
    Fax: 86-755-83282993
    (5)
  • L4947A

  • Vendor: ST Pack: TO D/C: 05+& Qty: 2634 Note: 2C006  Adddate: 2024-03-28
  • Inquire Now
  • Kejin Electronics(HK) Limited   China
    Contact: Ms.JoyLin   MSN:joylin-kejinic@hotmail.com
    Tel: 86-755-83997989
    Fax: 86-755-83282993
    (5)
  • L4947H

  • Qty: 568 Note: New,unused in stock and at lower price in perfect quality!!!  Adddate: 2024-03-28
  • Inquire Now
  • Beijing huadong shiji teconolgy Co.,Lt   China
    Contact: Mr.zimingjiang   MSN:hddz-006@hotmail.com
    Tel: 86-010-62575888 805
    Fax: 86-010-62575899
    (5)
  • L4947H

  • Vendor: ST Pack: TO D/C: 93+& Qty: 258  Adddate: 2024-03-28
  • Inquire Now
  • YOUWEI ELECTRONICS CO., Ltd   China
    Contact: Mr.JACKHU   MSN:youweidz@hotmail.com
    Tel: 86-0755-33062827
    Fax: 86-0755-33062897
    (1)

About L4947

PDF/DataSheet Download

Datasheet: L4947

File Size: 59167 KB

Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Download : Click here to Download

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L4943 Parameters

Technical/Catalog InformationL4943
VendorSTMicroelectronics
CategoryIntegrated Circuits (ICs)
Package / CaseMultiwatt-15 (Vertical, Bent and Staggered Leads)
PackagingTube
TypeAudio Voltage Regulator
Voltage - Input11 ~ 18 V
Voltage - Output3 ~ 11 V
Number of Outputs3
ApplicationsConverter, Car Audio System
Operating Temperature-40°C ~ 85°C
Drawing Number*
Lead Free StatusLead Free
RoHS StatusRoHS Compliant
Other Names L4943
L4943

L4943 General Description

The L4943 contains a triple voltage regulator and a high side driver.

In stand-by the output is active as long as possible even when in thermal shutdown or under any other fault conditions.

The STCAP pin allows the use of a reserve supply capacitor that will hold enough energy for the 5V Stand-by line to allow the P to store data

L4943 Maximum Ratings

Symbol
Parameter
Value
Unit
VS
DC Operating Supply Voltage
-0.6to30
V
Transient Supply Overvoltage (50ms)
50
V
IO
Voltage Regulator Output Current
Internally limited
Vin
Input Voltage (EN1, EN2)
0to6
V
RSER
Output Capacitor Series Eq. Resistance
0.2to10
Ptot
Power Dissipation (Tcase = 85°C)
33
W
Top
Operating Temperature Range
-40to85
°C
Tstg
Storage Temperature Ranges
-55to150
°C

L4943 Features

·3 PROGRAMMABLE OUTPUTS:
  -3 TO 11V (500mA);
  -3 TO 11V (500mA);
  -3 TO 7V (500mA) STANDBY
·OUT1 AND OUT2 WITH INDEPENDENT ENABLE
·CONTROL FOR STAND-BY MODE
·0.4A HIGH SIDE DRIVER
·LOAD DUMP PROTECTION
·THERMAL SHUTDOWN

L4945 Parameters

Technical/Catalog InformationL4945
VendorSTMicroelectronics
CategoryIntegrated Circuits (ICs)
Regulator TypeSingle Output
Package / CaseTO-220-3 (Straight Leads)
PackagingTube
Regulator TopologyPositive Fixed
Current - Output500mA
Voltage - Output5V
Operating Temperature-40°C ~ 125°C
Voltage - Input6 ~ 26 V
Number of Regulators1
Current - Limit (Min)-
Current Short Circuit (Isc)500mA
Lead Free StatusLead Free
RoHS StatusRoHS Compliant
Other Names L4945
L4945
497 3629 ND
4973629ND
497-3629

L4945 General Description

The L4945 is a monolithic integrated circuit in Versawatt package specially designed to provide a stabilized supply voltage for automotive and industrial electronic systems. Thanks to their very low voltage drop, in automotive applications the devices can work correctly even during the cranking phase, when the battery voltage could fall as low as 6V. Furthermore, they incorporate a complete range of protection circuits against the dangerous overvoltages always present on the battery rail of the car.

L4945 Maximum Ratings

Symbol
Parameter
Value
Unit
Vi
DC Input Voltage
DC Reverse Input Voltage
Transient Input Overvoltages :
Load Dump :
5ms trise 10ms
tf Fall Time Constant = 100ms
RSOURCE 0.5
Field Decay :
5ms tfall 10ms, RSOURCE10
tr Rise Time Constant = 33ms
Low Energy Spike :
trise = 1ms, tfall = 500ms, RSOURCE10
fr Repetition Frequency = 5Hz

35
-18
80

 

-80

± 100

V
V
V

 

V

V

TJ
Junction Temperature Range
40 to 150
°C
TOP
Operating Temperature Range
40 to 125
°C
Tstg
Storage Temperature Range
55 to 150
°C

L4945 Features

`5V ± 4% PRECISE OUTPUT VOLTAGE OVER FULL TEMPERATURE RANGE ( 40 / 125 °C)
`VERY LOW VOLTAGE DROP (0.75Vmax) OVER FULL TEMPERATURE RANGE
`OUTPUT CURRENT UP TO 500mA
`OVERVOLTAGE AND REVERSE VOLTAGE PROTECTIONS
`REVERSE VOLTAGEPROTECTION
`SHORT CIRCUIT PROTECTION AND THERMAL SHUT-DOWN (with hysteresis)
`LOW START UP CURRENT

L4947 Parameters

Technical/Catalog InformationL4947
VendorSTMicroelectronics
CategoryIntegrated Circuits (ICs)
Regulator TypeSingle Output
Package / CasePentawatt-5 (Vertical, Bent and Staggered Leads)
PackagingTube
Regulator TopologyPositive Fixed
Current - Output500mA
Voltage - Output5V
Operating Temperature-40°C ~ 125°C
Voltage - Input6 ~ 26 V
Number of Regulators1
Current - Limit (Min)-
Current Short Circuit (Isc)500mA
Lead Free StatusContains Lead
RoHS StatusRoHS Non-Compliant
Other Names L4947
L4947
497 3918 5 ND
49739185ND
497-3918-5

L4947 General Description

The L4947/L4947R is a monolithic integrated circuit in Pentawatt package specially designed to provide a stabilized supply voltage for automotive and industrial electronic systems. Thanks to its very low voltage drop, in automotive applications the L4947/L4947Rcan work correctly even during the cranking phase, when the battery voltage could fall as low as 6V. Furthermore, it incorporates a complete range of protection circuits against the dangerous overvoltages always present on the battery rail of the car. The reset function makes the device particularly suited to supply microprocessor based systems : a signal is available (after an externally programmable delay) to reset the microprocessor at power-on phase ; at power-off, this signal becomes low inhibiting the microprocessor.

L4947 Maximum Ratings

Symbol Parameter Value Unit
Vi DC Input Voltage
DC Reverse Input Voltage
Transient Input Overvoltages :
Load Dump :
5ms 3 trise 3 10ms
tf Fall Time Constant = 100ms
RSOURCE . 0.5W
Field Decay :
5ms 3 tfall 3 10ms, RSOURCE . 10W
tr Rise Time Constant = 33ms
Low Energy Spike :
trise = 1ms, tfall = 500ms, RSOURCE . 10W
fr Repetition Frequency = 5Hz
35
18
80




80
± 100
V
V
V



V

V
VR Reset Output Voltage 35 V
TJ, Tstg Junction and Storage Temperature Range 55 to 150 °C

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