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MFG:STMicroelectronics  Category:Integrated Circuits (ICs)  Package Cooled:SOP-20  D/C:00+

L4973D5.1-013TR Picture

L4973D-5.1, L4973D5.1-013TR, L4973V3.3 Datasheet download

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Part Number: L4973D5.1-013TR

Category: Integrated Circuits (ICs)

MFG: STMicroelectronics

Package Cooled: SOP-20

D/C: 00+

Description: IC REG SW 3.5A STEPDOWN 18PWRDIP

 

 
 
 
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  • L4901A

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  • YOUWEI ELECTRONICS CO., Ltd   China
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  • Beijing huadong shiji teconolgy Co.,Lt   China
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About L4901

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Datasheet: L4901

File Size: 137029 KB

Manufacturer: STMICROELECTRONICS [STMicroelectronics]

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L4973D5.1-013TR Suppliers

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  • L4901A

  • Vendor: ST Pack: TO D/C: 94+& Qty: 472  Adddate: 2024-03-29
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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: 2024-03-29
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  • 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: 2024-03-29
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  • 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: 2024-03-29
  • 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 L4901

PDF/DataSheet Download

Datasheet: L4901

File Size: 137029 KB

Manufacturer: STMICROELECTRONICS [STMicroelectronics]

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L4973V3.3 Suppliers

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    Contact: Ms.Jessica Ren   MSN:jessica@orientelec.cn
    Tel: 86-10-62103873/62101821
    Fax: 86-10-62102720
    (5)
  • L4901A

  • Vendor: ST Pack: TO D/C: 94+& Qty: 472  Adddate: 2024-03-29
  • 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: 2024-03-29
  • Inquire Now
  • Kejin Electronics(HK) Limited   China
    Contact: Ms.JoyLin   MSN:joylin-kejinic@hotmail.com
    Tel: 86-755-83997989
    Fax: 86-755-83282993
    (5)

About L4973V3.3

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Datasheet: L4973V3.3

File Size: 228092 KB

Manufacturer: STMICROELECTRONICS [STMicroelectronics]

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L4973D5.1-013TR Parameters

Technical/Catalog InformationL4973D5.1-013TR
VendorSTMicroelectronics (VA)
CategoryIntegrated Circuits (ICs)
TypeStep-Down (Buck)
Number of Outputs1
Voltage - Input8 ~ 55 V
Voltage - Output5.1V, 5.1 ~ 50 V
Current - Output3.5A
Power - Output4W
Package / Case20-SOIC (7.5mm Width)
PackagingDigi-Reel?
Internal Switch(s)Yes
SynchronousYes
Rds (On)150 mOhm
Operating Temperature-40°C ~ 150°C
Frequency - Switching100kHz ~ 300kHz
Lead Free StatusLead Free
RoHS StatusRoHS Compliant
Other Names L4973D5 1 013TR
L4973D51013TR
497 3359 6 ND
49733596ND
497-3359-6

L4973V3.3 Parameters

Technical/Catalog InformationL4973V3.3
VendorSTMicroelectronics
CategoryIntegrated Circuits (ICs)
TypeStep-Down (Buck)
Number of Outputs1
Voltage - Input8 ~ 55 V
Voltage - Output3.3V, 0.5 ~ 50 V
Current - Output3.5A
Power - Output5W
Package / Case18-DIP
PackagingTube
Internal Switch(s)Yes
SynchronousYes
Rds (On)150 mOhm
Operating Temperature-40°C ~ 150°C
Frequency - Switching100kHz ~ 300kHz
Lead Free StatusLead Free
RoHS StatusRoHS Compliant
Other Names L4973V3 3
L4973V33
497 1413 5 ND
49714135ND
497-1413-5

L4973V3.3 General Description

The L4973 is a step down monolithic power switching regulator delivering 3.5A at fixed voltages of 3.3V or 5.1V and using a simple external divider output adjustable voltage up to 50V.

Realized in BCD mixed technology, the device uses an internal power D-MOS transistor (with a typical Rdson of 0.15ohm) to obtain very high efficiency and very fast switching times.Switching frequency up to 300KHz are achievable (the maximum power dissipation of the packages must be observed).

A wide input voltage range between 8V to 55V and output voltages regulated from 3.3V to 40V cover the majority of the today applications.

Features of this new generation of DC-DC converter includes pulse by pulse current limit, hiccup mode for output short circuit protection, voltage feed forward regulation, soft start, input/output synchronization, protection against feedback loop disconnection, inhibit for zero current consumption and thermal shutdown.

Packages available are in plastic dual in line, DIP-18 (12+3+3) for standard assembly, and SO20 (12+4+4) for SMD assembly.

L4973V3.3 Maximum Ratings

Symbol
Parameter
Value
Unit
DIP-18
S0-20
V7,V8
V9,V8
Input voltage
58
V
V2,V3
V2,V3
Output DC voltage
Output peak voltage at t = 0.1s f=200KHz
-1
-5
V
V
I2,I3
I2,I3
Maximum output current
int. limit.
V9-V8
V10-V8
 
14
V
V9
V10
Bootstrap voltage
70
V
V11
V12
Analogs input voltage (VCC = 24V)
12
V
V17
V19
Analogs input voltage (VCC = 24V)
13
V
V12
V13
(VCC = 20V)
6
-0.3
V
V
V18
V20
(VCC = 20V)
5.5
-0.3
V
V
V10
V11
Inhibit
Vcc
-0.3
V
V
Ptot
Power dissipation a Tpins 90°C
(Tamb = 70°C no copper area)
(Tamb = 70°C 4cm copper area on PCB)
DIP
12+3+3
5
1.3
2
W
W
W
Power dissipation a Tpins = 90°C SO20
4
W
Tj,Tstg
Junction and storage temperature
-40to150
°C

L4973V3.3 Features

·UPTO3.5ASTEPDOWNCONVERTER
·OPERATING INPUT VOLTAGE FROM 8V TO 55V
·3.3V AND 5.1V (±1%) FIXED OUTPUT, AND ADJUSTABLE OUTPUTS FROM:0V TO 50V (3.3V type) 5.1V TO 50V (5.1 type)
·FREQUENCYADJUSTABLE UP TO300KHz
·VOLTAGEFEED FORWARD
·ZERO LOAD CURRENT OPERATION (min 1mA)
·INTERNAL CURRENT LIMITING (PULSE BY PULSE AND HICCUPMODE)
·PRECISE 5.1V (1.5%) REFERENCE VOLTAGE EXTERNALLY AVAILABLE
·INPUT/OUTPUT SYNCHRONIZATION FUNCTION
·INHIBIT FOR ZERO CURRENT CONSUMPTION (100mA Typ. at VCC = 24V)
·PROTECTION AGAINST FEEDBACK DISCONNECTION
·THERMAL SHUTDOWN
·OUTPUT OVERVOLTAGEPROTECTION
·SOFT START FUNCTION

L4973V3.3 Connection Diagram

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