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Sanhuang electronics (Hong Kong) Co., Limited

Sanhuang Electronics (Hong Kong) Co., Limite

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L4973D3.3-013TR IC REG BUCK ADJ/3.3V 3.5A 20SO STMicroelectronics

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China L4973D3.3-013TR IC REG BUCK ADJ/3.3V 3.5A 20SO STMicroelectronics wholesale
  • China L4973D3.3-013TR IC REG BUCK ADJ/3.3V 3.5A 20SO STMicroelectronics wholesale

L4973D3.3-013TR IC REG BUCK ADJ/3.3V 3.5A 20SO STMicroelectronics
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Brand Name :STMicroelectronics
Model Number :L4973D3.3-013TR
MOQ :1
Price :Based on current price
Payment Terms :T/T
Supply Ability :In stock
Delivery Time :3-5 work days
Packaging Details :anti-static bag & cardboard box
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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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

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L4973D5.1
Power Circuits		 3.5 A Switching Regulator STMicroelectronics L4973D3.3-013TR vs L4973D5.1
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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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