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Key Features
- Inhibit for zero current consumption (100mA at VCC= 24V)
- Input/output synchronization function
- Thermal shutdown
- Protection against feedback disconnection
- Soft start function
- Output over voltage protection
- Internal current limiting (pulse by pulse and HICCUP mode)
- Zero load current operation (min 1mA)
- Up to 3.5A step down converter
- 3.3V and 5.1V (±1%) fixed output, and adjustable outputs from:
0.5V to 50V (3.3 type) 5.1V to 50V (5.1 type) - Operating input voltage from 8V to 55V
- Voltage feed forward
- Precise 5.1V (1.5%) reference voltage externally available
- Frequency adjustable up to 300kHz
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Sample & Buy
| Part Number | Package | Packing Type | Marketing Status | Budgetary Price (US$)* | Quantity | ECCN (US) | Country of Origin | Order from Distributors | Order from ST |
|---|---|---|---|---|---|---|---|---|---|
| L4973D3.3 | SO-20 | Tube |
Active
|
1.811 | 10000 | EAR99 | MALAYSIA | Check Availability | Buy now |
| L4973D5.1-013TR | SO-20 | Tape And Reel |
Active
|
1.861 | 10000 | EAR99 | MALAYSIA | Check Availability | Buy now |
| L4973V3.3 | PDIP 18 | Tube |
Active
|
1.693 | 10000 | EAR99 | MALAYSIA | No availability of distributors reported, please contact our sales office | Buy now |
| L4973D3.3-013TR | SO-20 | Tape And Reel |
Active
|
1.811 | 10000 | EAR99 | MALAYSIA | Check Availability | Buy now |
| L4973D5.1 | SO-20 | Tube |
Active
|
1.861 | 10000 | EAR99 | MALAYSIA | Check Availability | Buy now |
| L4973V5.1 | PDIP 18 | Tube |
Active
|
1.778 | 10000 | EAR99 | MALAYSIA | Check Availability | Get sample |
(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors
Featured Videos
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| L4973D3.3 |
Active
|
SO-20 | Industrial | Ecopack2 | |
| L4973D3.3-013TR |
Active
|
SO-20 | Industrial | Ecopack2 | |
| L4973D5.1 |
Active
|
SO-20 | Industrial | Ecopack2 | |
| L4973D5.1-013TR |
Active
|
SO-20 | Industrial | Ecopack2 | |
| L4973V3.3 |
Active
|
PDIP 18 | Industrial | Ecopack1 | |
| L4973V5.1 |
Active
|
PDIP 18 | Industrial | Ecopack1 |
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
