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LM21305SQE

The Texas Instruments LM21305SQE is a high-efficiency synchronous buck converter. It operates with an input voltage range of 3V to 18V and can deliver up to 5A of output current.

✓ Total Stock: 75 pcs

$ Price Range: $1.08

LM21305SQE Available from 1 distributor

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Bristol Electronics ✓ Non-Authorised Inventory information	75 pcs On Request	75 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

LM21305SQE Specifications Quick View

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Category	New Products
Manufacturer Name	Texas Instruments

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LM21305SQE Description

Short technical summary and product information.

The LM21305SQE from Texas Instruments is a high-efficiency synchronous DC-DC converter. It features integrated low R DSon power MOSFETs and supports a wide input voltage range from 3V to 18V, capable of handling load currents as high as 5A.

This converter utilizes peak current-mode control for ultra-fast line and load transient response, with internal slope compensation and a high-bandwidth error amplifier. It offers an adjustable switching frequency from 300 kHz to 1.5 MHz, with external frequency synchronization capability. The device includes an accurate 0.598-V feedback voltage reference and operates with a typical quiescent current of 0.009A.

Designed for flexibility, the LM21305SQE has a wide duty-cycle operating range. It supports monotonic startup into pre-biased loads with its internal soft-start function. Protection features include cycle-by-cycle overcurrent protection, output overvoltage protection, and thermal shutdown protection with hysteresis.

The component is housed in a 5mm x 5mm WQFN-28 PowerPAD package, suitable for surface mounting. Its operating temperature range is -40°C to 85°C.

LM21305SQE Quick Information

Product Type: Synchronous Buck Converter

Canonical Name: LM21305SQE Synchronous Buck Converter

Subcategory: Synchronous Buck Converter

LM21305SQE Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

LM21305SQE Estimated Pricing

Qty	Low	High
1+	$1.08	$1.08

Estimated market price range - modelled values for guidance only, not live distributor offers.

LM21305SQE Features

Wide 3V to 18V input voltage range.
Delivers up to 5A load current.
Adjustable switching frequency 300kHz-1.5MHz.
Peak current-mode control for fast transients.
Compact 5mm x 5mm WQFN-28 package.

LM21305SQE Applications

Suitable for various power supply designs.
Ideal for applications requiring high efficiency.
Used in systems with wide input voltage variations.
Supports high output current demands.

LM21305SQE FAQs

7 frequently asked questions generated from this part’s specifications.

What is the input voltage range of the LM21305SQE?

The input voltage range is 3V to 18V.

What is the output current capability?

The maximum output current is 5A.

What is the output voltage of the LM21305SQE?

The output voltage is fixed at 0.6V.

What is the switching frequency range?

The switching frequency is adjustable from 300kHz to 1.5MHz.

What package does the LM21305SQE come in?

It is available in a WQFN-28 package measuring 5mm x 5mm.

What is the operating temperature range?

The operating temperature range is -40°C to 85°C.

What control mode does the LM21305SQE use?

It uses current mode control.