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L4973D3.3-013TR IC REG BUCK ADJ/3.3V 3.5A 20SO STMicroelectronics
| Brand Name | STMicroelectronics |
|---|---|
| Model Number | L4973D3.3-013TR |
| Minimum Order Quantity | 1 |
| Price | Based on current price |
| Packaging Details | anti-static bag & cardboard box |
| Delivery Time | 3-5 work days |
| Payment Terms | T/T |
| Supply Ability | In stock |
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xProduct Details
| Function | Step-Down | Output Configuration | Positive |
|---|---|---|---|
| Topology | Buck | Output Type | Adjustable (Fixed) |
| Number Of Outputs | 1 | Voltage - Input (Min) | 8V |
| Voltage - Input (Max) | 55V | Voltage - Output (Min/Fixed) | 0.5V (3.3V) |
| Voltage - Output (Max) | 50V | Current - Output | 3.5A |
| Frequency - Switching | 100kHz ~ 300kHz | Synchronous Rectifier | No |
| Operating Temperature | -40°C ~ 150°C (TJ) | Mounting Type | Surface Mount |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) | Supplier Device Package | 20-SO |
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| Part Number | Description | |
|---|---|---|
| L4973D3.3-013TR | IC REG BUCK ADJ/3.3V 3.5A 20SO | |
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| MIC2177-5.0YWM-TR | IC REG BUCK 5V 2.5A 20SOIC | |
| MIC2178-3.3YWM-TR | IC REG BUCK 3.3V 2.5A 20SOIC | |
| MIC2178-5.0YWM-TR | IC REG BUCK 5V 2.5A 20SOIC | |
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| MIC2177YWM-TR | IC REG BUCK ADJ 2.5A 20SOIC | |
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| MIC2177-5.0BWM | IC REG BUCK 5V 2.5A 20SOIC | |
| MIC2177-5.0BWM-TR | IC REG BUCK 5V 2.5A 20SOIC | |
| MIC2177BWM-TR | IC REG BUCK ADJ 2.5A 20SOIC | |
| MIC2178-3.3BWM | IC REG BUCK 3.3V 2.5A 20SOIC | |
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| MIC2178-5.0BWM | IC REG BUCK 5V 2.5A 20SOIC | |
| MIC2178-5.0BWM-TR | IC REG BUCK 5V 2.5A 20SOIC | |
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Product Description
Product Details
Description
The L4973 is a step down monolithic power switching regulator delivering 3.5A at fixed voltages of 3.3V or 5.1V 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 0.15Ω) to obtain very high efficiency and very fast switching times. Switching frequency up to 300KHz are achievable (the maximum power dissipation of the packages must be observed).
Features
■ Up to 3.5A step down converter■ Operating input voltage from 8V to 55V
■ 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)
■ Frequency adjustable up to 300kHz
■ Voltage feed forward
■ Zero load current operation (min 1mA)
■ Internal current limiting (pulse by pulse and HICCUP mode)
■ Precise 5.1V (1.5%) reference voltage externally available
■ Input/output synchronization function
■ Inhibit for zero current consumption (100mA typ. at VCC = 24V)
■ Protection against feedback disconnection
■ Thermal shutdown
■ Output over voltage protection
■ Soft start function
Specifications
| Attribute | Attribute Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Product Category | DC Switching Regulators |
| Series | L4973 |
| Type | Charge Pump |
| Packaging | Cut Tape (CT) Alternate Packaging |
| Unit-Weight | 0.009408 oz |
| Mounting-Style | SMD/SMT |
| Package-Case | 20-SOIC (0.295", 7.50mm Width) |
| Operating-Temperature | -40°C ~ 150°C (TJ) |
| Mounting-Type | Surface Mount |
| Output-Type | Adjustable (Fixed) |
| Function | Step-Down |
| Supplier-Device-Package | 20-SO |
| Number-of-Outputs | 1 Output |
| Topology | Buck |
| Frequency-Switching | 100kHz ~ 300kHz |
| Current-Output | 3.5A |
| Output-Configuration | Positive |
| Output Voltage | 0.5V (3.3V) |
| Voltage-Output-Max | 50V |
| Synchronous-Rectifier | No |
| Voltage-Input-Min | 8V |
| Voltage-Input-Max | 55V |
| Output-Voltage | 5.1 V |
| Input-Voltage-MAX | 55 V |
| Output-Current | 3.5 A |
| Switching-Frequency | 90 kHz to 110 kHz |
| Package-Case | SO-20 |
Functional compatible component
Form,Package,Functional compatible component
| Manufacturer Part# | Description | Manufacturer | Compare |
| L4972AD Power Circuits |
2 A SWITCHING REGULATOR | STMicroelectronics | L4973D3.3-013TR vs L4972AD |
| L4973D3.3 Power Circuits |
3.5 A Switching Regulator | STMicroelectronics | L4973D3.3-013TR vs L4973D3.3 |
| IRU3011CWPBF Power Circuits |
SWITCHING CONTROLLER, 250kHz SWITCHING FREQ-MAX, PDSO20, PLASTIC, SOIC-20 | Infineon Technologies AG | L4973D3.3-013TR vs IRU3011CWPBF |
| LM2636M Power Circuits |
SWITCHING CONTROLLER, 2000kHz SWITCHING FREQ-MAX, PDSO20, PLASTIC, SO-20 | Rochester Electronics LLC | L4973D3.3-013TR vs LM2636M |
| HIP6004ACB Power Circuits |
Switching Controller | Renesas Electronics Corporation | L4973D3.3-013TR vs HIP6004ACB |
| LM2636M/NOPB Power Circuits |
SWITCHING CONTROLLER, 2000kHz SWITCHING FREQ-MAX, PDSO20, PLASTIC, SO-20 | Rochester Electronics LLC | L4973D3.3-013TR vs LM2636M/NOPB |
| L4973D5.1 Power Circuits |
3.5 A Switching Regulator | STMicroelectronics | L4973D3.3-013TR vs L4973D5.1 |
| IRU3011CW Power Circuits |
Switching Controller, 250kHz Switching Freq-Max, PDSO20, PLASTIC, SOIC-20 | Infineon Technologies AG | L4973D3.3-013TR vs IRU3011CW |
| L4973D5.1-013TR Power Circuits |
3.5 A Switching Regulator | STMicroelectronics | L4973D3.3-013TR vs L4973D5.1-013TR |
| L4972AD013TR Power Circuits |
2 A SWITCHING REGULATOR | STMicroelectronics | L4973D3.3-013TR vs L4972AD013TR |
Descriptions
Buck Switching Regulator IC Positive Adjustable (Fixed) 0.5V (3.3V) 1 Output 3.5A 20-SOIC (0.295", 7.50mm Width)
Conv DC-DC 8V to 55V Step Down Single-Out 0.5V to 50V 3.5A 20-Pin SO T/R
Voltage Regulators - Switching Regulators 3.3V 3.5A Step-Down
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