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L4976

Switching Converters, Regulators & Controllers 3.3 to 50V Step-Down

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SeekIC No. : 00586213 Detail

L4976: Switching Converters, Regulators & Controllers 3.3 to 50V Step-Down

L4976 Data Sheet

floor Price/Ceiling Price

US $ 1.18~1.34 / Piece | Get Latest Price
Part Number:
L4976
Mfg:
STMicroelectronics
Supply Ability:
5000

Price Break

  • Qty
  • 0~1435
  • 1435~2000
  • 2000~5000
  • Unit Price
  • $1.34
  • $1.25
  • $1.18
  • Processing time
  • 15 Days
  • 15 Days
  • 15 Days
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Total Cost: $ 0.00

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Product Details

Quick Details

Output Voltage : 50 V Operating Temperature Range : - 40 C to + 150 C
Mounting Style : Through Hole Package / Case : PDIP-8
Packaging : Tube    

Description

Output Current :
Output Power :
Input Voltage :
Switching Frequency :
Packaging : Tube
Mounting Style : Through Hole
Package / Case : PDIP-8
Operating Temperature Range : - 40 C to + 150 C
Output Voltage : 50 V


Features:

·UP TO 1A STEP DOWN CONVERTER
·OPERATING INPUT VOLTAGE FROM 8V TO 55V
·PRECISE 5.1V REFERENCE VOLTAGE
·OUTPUT VOLTAGE ADJUSTABLE FROM 3.3V TO 50V
·SWITCHING FREQUENCY ADJUSTABLE UP TO 500KHz
·VOLTAGEFEEDFORWARD ZERO LOAD CURRENT OPERATION
·INTERNAL CURRENT LIMITING (PULSE-BYPULSE AND HICCUPMODE)
·PROTECTION AGAINST FEEDBACK DISCONNECTION
·THERMAL SHUTDOWN


Pinout

Connection Diagram Connection Diagram


Specifications

Symbol
Parameter
Value
Unit
Minidip
SO16
V5
V11
 Input voltage
58
V
V4
V5,V6
 Output DC voltage
Output peak voltage at t = 0.1s f=200KHz
-1
-5
V
V
I4
I5,I6
 Maximum output current
int. limit.
V6-V5
V12-V11
  
14
V
V6
V12
 Bootstrap voltage
70
V
V7
V13
 Analogs input voltage (VCC = 24V)
12
V
V8
V14
 (VCC = 20V)
6
-0.3
V
V
Ptot
 Power dissipation a Tamb 60°C Minidip
1
W
SO16
0.8
W
Tj,Tstg
 Junction and storage temperature
-40to150
°C



Description

The L4976 is a step down monolithic power switching regulator delivering 1A at a voltage between 3.3V and 50V (selected by a simple external divider). Realized in BCD mixed technology,the device uses an internal power D-MOS transistor (with a typical Rdson of 0.25W) to obtain very high efficency and high switching speed.

A switching frequency up to 250KHz is 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 today's applications.Features of this new generations of DC-DC converter L4976  include pulse-by-pulse current limit, hiccup
mode for short circuit protection, voltage feedforward regulation, protection against feedback loop disconnectionand thermal shutdown.

L4976  is available in plastic dual in line,MINIDIP 8 for standard assembly, and SO16W for SMD assembly.




Parameters:

Technical/Catalog InformationL4976
VendorSTMicroelectronics
CategoryIntegrated Circuits (ICs)
TypeStep-Down (Buck)
Number of Outputs1
Voltage - Input8 ~ 55 V
Voltage - Output0.5 ~ 50 V
Current - Output1A
Power - Output1W
Package / Case8-DIP (300 mil)
PackagingTube
Internal Switch(s)Yes
SynchronousNo
Rds (On)250 mOhm
Operating Temperature0°C ~ 125°C
Frequency - Switching100kHz
Lead Free StatusLead Free
RoHS StatusRoHS Compliant
Other Names L4976
L4976
497 6700 5 ND
49767005ND
497-6700-5



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