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MFG:ST Package Cooled:SOP
Part Number: L4972AD
MFG: ST
Package Cooled: SOP
Description: The L4972Aisa stepdownmonolithicpowerswitching regulatordelivering2Aat avoltagevariable from 5.1 to 40...
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L4972AD
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DataSheet
General Description
L4972AD General Description
The L4972Aisa stepdownmonolithicpowerswitching regulatordelivering2Aat avoltagevariable from 5.1 to 40V.
Realized with BCD mixed technology, the device uses a DMOS output transistor to obtain very high efficiencyand very fast switching times. Featuresofthe L4972A include reset and power fail for microprocessors,
feed forward line regulation, soft start ,limiting current and thermal protection. The device is mountedin a Powerdip16 + 2 + 2and SO20large plastic packages and requires few external components. Efficient operation at switching frequencies up to 200KHz allows reduction in the size and cost of external filter component.
L4972AD Maximum Ratings
| Symbol | Parameter | Value | Unit |
| V11 | Input voltage | 55 | V |
| V11 | Input to output voltage difference | 50 | V |
| V20 | Negative output DC voltage | -1 -5 |
V |
| I20 | Negative output peak voltage at t = 0.1ms; f = 100KHz | Internally Limited | V |
| V1 | Voltage at pin 3 and 6 | 65 V11 + 15 |
V |
| V4,V8 | Voltage at pin 2 | 12 | V |
| V3 | Pin 3 sink current | 50 | mA |
| I3 | Pin 5 source current | 50 | mA |
| PTOT | Power dissipation at Tcase 90°C | 5 / 3.75(*) 1.3/1 (*) |
W W |
| Tj, Tstg | Junction and storage temperature | -40 to 150 | °C |
L4972AD Connection Diagram
L4972AD
PDF/DataSheet Download
- Datasheet: L4972AD
- File Size: 347143 KB
- Manufacturer: STMICROELECTRONICS [STMicroelectronics]
- Click here to Download
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