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L4972A
DC-DC Switching Buck (Step Down) Regulator, Adjustable, 15V-50Vin, 5.1V-40Vout, 2Aout, DIP-20
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No Longer Manufactured
Product Information
ManufacturerSTMICROELECTRONICS
Manufacturer Part NoL4972A
Order Code1094219
Technical Datasheet
Output TypeAdjustable
No. of Outputs1Outputs
TopologyBuck (Step Down)
Input Voltage Min15V
Input Voltage Max50V
Output Current2A
Max Output Current2A
IC Case / PackageDIP
No. of Pins20Pins
IC MountingThrough Hole
Output Voltage - Nom-
Output Voltage Min5.1V
Output Voltage Max40V
Switching Frequency Typ100kHz
Efficiency90%
Operating Temperature Min-40°C
Operating Temperature Max150°C
Product Range-
Qualification-
MSL-
SVHCNo SVHC (17-Dec-2015)
DC / DC Converter IC CaseDIP
Automotive Qualification Standard-
Switching Frequency200kHz
Product Overview
The L4972A is a step-down monolithic power Switching Regulator delivering 2A 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 L4972 include reset and power fail for microprocessors, feed forward line regulation, soft-start, limiting current and thermal protection. Efficient operation at switching frequency up to 200kHz allows reduction in the size and cost of external filter component.
- PWM latch for single pulse per period
- Undervoltage lockout with hysteretic turn-on
- Very high efficiency
- Continuous mode operation
- Thermal shutdown
- Reset and power-fail functions
- Internal current limiting
- Input/output sync pin
- Internal feed-forward line regulation
- Precise 5.1V ±2% on chip reference
- 0 to 90% duty cycle range
Applications
Power Management
Technical Specifications
Output Type
Adjustable
Topology
Buck (Step Down)
Input Voltage Max
50V
Max Output Current
2A
No. of Pins
20Pins
Output Voltage - Nom
-
Output Voltage Max
40V
Efficiency
90%
Operating Temperature Max
150°C
Qualification
-
SVHC
No SVHC (17-Dec-2015)
Automotive Qualification Standard
-
No. of Outputs
1Outputs
Input Voltage Min
15V
Output Current
2A
IC Case / Package
DIP
IC Mounting
Through Hole
Output Voltage Min
5.1V
Switching Frequency Typ
100kHz
Operating Temperature Min
-40°C
Product Range
-
MSL
-
DC / DC Converter IC Case
DIP
Switching Frequency
200kHz
Technical Docs (3)
Associated Products
1 Product Found
Legislation and Environmental
Country of Origin:
Country in which last significant manufacturing process was carried outCountry of Origin:Malaysia
Country in which last significant manufacturing process was carried out
Country in which last significant manufacturing process was carried outCountry of Origin:Malaysia
Country in which last significant manufacturing process was carried out
Tariff No:85423990
US ECCN:EAR99
EU ECCN:NLR
RoHS Compliant:Yes
RoHS
RoHS Phthalates Compliant:Yes
RoHS
SVHC:No SVHC (17-Dec-2015)
Download Product Compliance Certificate
Product Compliance Certificate
Weight (kg):.002495
Product traceability