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Manufacturer Part #
L4973D3.3-013TR
SO 20 .30 TO JEDEC MS-013
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| Mfr. Name: | STMicroelectronics | ||||||||||
| Standard Pkg: | Product Variant Information section Available PackagingPackage Qty:1000 per Reel Package Style:SOIC-20 Mounting Method:Surface Mount | ||||||||||
| Date Code: | |||||||||||
STMicroelectronics L4973D3.3-013TR - Product Specification
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STMicroelectronics L4973D3.3-013TR - Technical Attributes
| Topology: | Buck |
| Input Voltage: | 8V to 55V |
| Output Current-Max: | 3.5A |
| Output Voltage Range: | 0.5V to 50V |
| Output Type: | Fixed/Adjustable |
| Switching Frequency-Max: | 300kHz |
| Operating Temp Range: | -40°C to +150°C |
| Duty Cycle-Max: | 97% |
| Efficiency: | 90% |
| No. of Outputs: | 1 |
| Quiescent Current: | 6mA |
| Storage Temperature Range: | -40°C to +150°C |
| Load Regulation: | 25mV |
| Package Style: | SOIC-20 |
| Mounting Method: | Surface Mount |
Features & Applications
The L4973D3.3-013TR is a step down monolithic power switching regulator delivering 3.5 A at fixed voltages of 3.3 V or 5.1 V and using a simple external divider output adjustable voltage up to 50V. Realized in BCD mixed technology, the device uses an internal power D-MOS transistor (with a typical RDS(on) of 0.15 Ω) to obtain very high efficiency and very fast switching times.
A wide input voltage range between 8 V to 55 V and output voltages regulated from 3.3 V to 40 V cover the majority of the today applications. Features of this new generation of DC-DC converter includes pulse by pulse current limit, hiccup mode for output short circuit protection, voltage feed forward regulation, soft-start, input/output synchronization, protection against feedback loop disconnection, inhibit for zero current consumption and thermal shutdown
Features:
- Up to 3.5 A step down converter
- Operating input voltage from 8 V to 55 V
- 3.3 V and 5.1 V (±1%) fixed output, and adjustable outputs from:
- 0.5 V to 50 V (3.3 type)
- 5.1 V to 50 V (5.1 type)
- Frequency adjustable up to 300 kHz
- Voltage feed forward
- Zero load current operation (min. 1 mA)
- Internal current limiting (pulse by pulse and HICCUP mode)
- Precise 5.1 V (1.5%) reference voltage externally available
- Input/output synchronization function
- Inhibit for zero current consumption (100 mA typ. at VCC = 24 V)
- Protection against feedback disconnection
- Thermal shutdown
- Output over voltage protection
- Soft-start function
Available Packaging
Package Qty:
1000 per Reel
Package Style:
SOIC-20
Mounting Method:
Surface Mount