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L4975A

Switching Converters, Regulators & Controllers 5.1 to 40V Step-Down

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SeekIC No. : 00585742 Detail

L4975A: Switching Converters, Regulators & Controllers 5.1 to 40V Step-Down

L4975A Data Sheet

floor Price/Ceiling Price

US $ 5.93~8.33 / Piece | Get Latest Price
Part Number:
L4975A
Mfg:
STMicroelectronics
Supply Ability:
5000

Price Break

  • Qty
  • 0~131
  • 131~250
  • 250~500
  • 500~1000
  • Unit Price
  • $8.33
  • $6.71
  • $6.37
  • $5.93
  • Processing time
  • 15 Days
  • 15 Days
  • 15 Days
  • 15 Days
View more price & deliveries
Total Cost: $ 0.00

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Upload time: 2025/1/11

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Product Details

Quick Details

Output Voltage : 40 V Mounting Style : Through Hole
Package / Case : Multiwatt-15 Packaging : Tube    

Description

Output Current :
Output Power :
Input Voltage :
Switching Frequency :
Operating Temperature Range :
Packaging : Tube
Mounting Style : Through Hole
Output Voltage : 40 V
Package / Case : Multiwatt-15


Features:

·5A OUTPUT CURRENT
·5.1V TO 40V OUTPUT VOLTAGERANGE
·0 TO 90% DUTY CYCLE RANGE
·INTERNAL FEED-FORWARD LINE REGULATION
·INTERNAL CURRENT LIMITING
·PRECISE 5.1V ± 2% ON CHIP REFERENCE
·RESET AND POWER FAIL FUNCTIONS
·SOFT START
·INPUT/OUTPUT SYNC PIN
·UNDER VOLTAGE LOCK OUT WITH HYSTERETIC TURN-ON
·PWM LATCH FOR SINGLE PULSE PER PERIOD
·VERYHIGH EFFICIENCY
·SWITCHING FREQUENCY UP TO 500KHz
·THERMAL SHUTDOWN
·CONTINUOUS MODE OPERATION


Specifications

Symbol
Parameter
Value
Unit
V9
 Input Voltage
55
V
V9
 Input Operating Voltage
50
V
V7
 Output DC Voltage
Output Peak Voltage at t = 0.1s f =200khz
-1
-7
V
V
I7
 Maximum Output Current
Internally Limited
V6
 Boostrap Voltage
Boostrap Operating Voltage
65
V9+15
V
V
V3,V12
 Input Voltage at Pins 3, 12
12
V
V4
 Reset Output Voltage
50
V
I4
 Reset Output Sink Current
50
mA
V5,V10,V11,V13
 Input Voltage at Pin 5, 10, 11, 13
7
V
I5
 Reset Delay Sink Current
30
mA
I10
 Error Amplifier Output Sink Current
1
A
I12
 Soft Start Sink Current
30
mA
Ptot
 Total Power Dissipation at Tcase < 120°C

30
W
TJ,TSTG
 Junction and Storage Temperature
-40to150
°C



Description

The L4975A is a stepdown monolithic power switching regulator delivering 5A at a voltage variable from 5.1 to 40V.

Realized with BCD mixed technology, the device uses a DMOS output transistor to obtain very high efficiency and very fast switching times. Features of the L4975A include reset and power fail for microprocessors,feed forward line regulation, soft start, limiting current and thermal protection. L4975A is mounted in a 15-lead multiwatt plastic power package and requires few external components.Efficient operation at switching frequencies up to 500KHz allows reduction in the size and cost of external filter components.




Parameters:

Technical/Catalog InformationL4975A
VendorSTMicroelectronics
CategoryIntegrated Circuits (ICs)
TypeStep-Down (Buck)
Number of Outputs1
Voltage - Input15 ~ 50 V
Voltage - Output5.1 ~ 40 V
Current - Output5A
Power - Output30W
Package / CaseMultiwatt-15 (Vertical, Bent and Staggered Leads)
PackagingTube
Internal Switch(s)Yes
SynchronousYes
Rds (On)-
Operating Temperature0°C ~ 125°C
Frequency - Switching200kHz
Lead Free StatusLead Free
RoHS StatusRoHS Compliant
Other Names L4975A
L4975A
497 5335 5 ND
49753355ND
497-5335-5



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