| TYPE | DESCRIPTION |
|---|
| Mounting Style | Through Hole |
| Frequency | 200 kHz |
| Number of Pins | 20 Pin |
| Supply Voltage (DC) | 50.0V (max) |
| Operating Voltage | 15V ~ 50V |
| Case/Package | DIP-20 |
| Number of Outputs | 1 Output |
| Input Voltage (DC) | 50.0 V |
| Output Voltage | 5.1V ~ 40V |
| Output Current | 3.5 A |
| Number of Channels | 1 Channel |
| Number of Positions | 20 Position |
| Quiescent Current | 19 mA |
| voltage rating | 0.45 V |
| Switching Frequency | 200 kHz |
| Topology | Buck |
| Input Voltage (Max) | 50 V |
| Input Voltage (Min) | 15 V |
| Output Voltage (Max) | 40 V |
| Output Voltage (Min) | 5.1 V |
| Output Current (Max) | 3.5 A |
| Operating Temperature (Max) | 150 ℃ |
| Operating Temperature (Min) | -40 ℃ |
| Supply Voltage | 15 V |
| Supply Voltage (Max) | 50 V |
| Supply Voltage (Min) | 15 V |
| Input Voltage | 15V ~ 50V |
| TYPE | DESCRIPTION |
|---|
| Product Lifecycle Status | Active |
| Packaging | Cut Tape (CT) |
| Size-Length | 24.8 mm |
| Size-Width | 7.1 mm |
| Size-Height | 4.59 mm |
| Weight | 0.004535924 kg |
| Operating Temperature | 0℃ ~ 125℃ |
The L4974A is a step-down monolithic DC-DC Power Switching Regulator delivering 3.5A at a voltage variable from 5.1 to 40V. It is realized with BCD mixed technology, the device uses a DMOS output transistor to obtain very high efficiency and very fast switching times. It requires few external components. An efficient operation at switching frequencies up to 200KHz allows reduction in the size of external filter component.
● Internal feed-forward line reg
● Internal current limiting
● Reset and power fail functions
● Input/output sync pin
● Under-voltage lock out with hysteretic turn-ON
● PWM latch for single pulse per period
● Very high efficiency
● Thermal shutdown
● Continuous mode operation
ST Microelectronics
22 Pages / 6.52 MByte
ST Microelectronics
23 Pages / 6.52 MByte
ST Microelectronics
IC REG BUCK ADJ 3.5A 20DIP
ST Microelectronics
Conv DC-DC 15V to 50V Step Down Single-Out 5.1V to 40V 3.5A 20Pin Power PDIP Tube
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