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LT8645SIV#PBF

The LT8645SIV#PBF is a 65V, 8A synchronous step-down switching regulator from ADI Electronics. It features the second-generation Silent Switcher 2 architecture for minimized EMI emissions.

✓ Total Stock: 4,740 pcs

$ Price Range: $1.08

LT8645SIV#PBF Available from 3 distributors

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✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Risen Electronics ✓ Non-Authorised Inventory information	3,000 pcs On Request	3000 pcs	On Request	1	On Request	On Request	On Request	On Request	2026-02-16 21:33:16
Rayichip ✓ Non-Authorised Inventory information	1,470 pcs On Request	1470 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
PROSOFT ELECTRONICS ✓ Non-Authorised Inventory information	270 pcs On Request	270 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

LT8645SIV#PBF Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	New Products
Manufacturer Name	ADI Electronics
Input Voltage	3.4V to 65V
Mounting Type	Surface Mount
Operating Temperature	150°C
Output Current	8A
Quiescent Current	2.5µA
SVHC Present	Not Present

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LT8645SIV#PBF Description

Short technical summary and product information.

The LT8645SIV#PBF from ADI Electronics is a high-performance synchronous step-down switching regulator. It utilizes the second-generation Silent Switcher 2 architecture, designed to significantly reduce EMI emissions while maintaining high efficiency, even at high switching frequencies. This design integrates bypass capacitors to optimize fast current loops, minimizing layout sensitivity and simplifying EMI compliance.

Key electrical characteristics include a wide input voltage range of 3.4V to 65V and a maximum output current of 8A. It boasts up to 95% efficiency at 1MHz and 94% at 2MHz (12VIN to 5VOUT). The regulator operates with ultralow quiescent current, drawing only 2.5µA in Burst Mode operation when regulating 12VIN to 3.3VOUT (LT8645S variant). It features a fast minimum switch on-time of 40ns, enabling high step-down ratios, and a low dropout voltage of 60mV at 1A.

The LT8645SIV#PBF is housed in a compact 32-lead, 6mm x 4mm LQFN package, suitable for surface mounting. The LT8645S variant includes internal compensation, while the LT8646S offers external compensation for enhanced current sharing and fast transient response. This regulator is suitable for automotive and industrial power supplies, general-purpose step-down applications, and GSM power supplies.

LT8645SIV#PBF Quick Information

Product Type: DC DC Switching Regulator

Canonical Name: LT8645SIV#PBF 65V 8A Synchronous Step-Down Silent Switcher 2 Regulator

Subcategory: Power Management ICs

LT8645SIV#PBF Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

LT8645SIV#PBF Estimated Pricing

Qty	Low	High
1+	$1.08	$1.08

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

LT8645SIV#PBF Features

65V, 8A synchronous step-down regulator.
Second generation Silent Switcher 2 architecture.
Ultralow 2.5µA quiescent current in Burst Mode.
High efficiency up to 95% at 1MHz.
Compact 6mm x 4mm LQFN package.

LT8645SIV#PBF Applications

Automotive and industrial supplies.
General purpose step-down converters.
High frequency power applications.
Low EMI emission requirements.

LT8645SIV#PBF FAQs

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

What is the input voltage range of the LT8645SIV#PBF?

The input voltage range is 3.4V to 65V.

What is the maximum output current?

The maximum output current is 8A.

What is the typical quiescent current?

The typical quiescent current is 2.5µA when regulating 12VIN to 3.3VOUT.

What is the operating temperature range?

The device is rated for operation up to 150°C junction temperature.

What package is the LT8645SIV#PBF available in?

It is available in a 32-Lead LQFN package measuring 6mm x 4mm.

What is the switching frequency range?

The switching frequency is adjustable from 200kHz to 2.2MHz.

What is the typical efficiency at 1MHz?

Typical efficiency is up to 95% at 1MHz with 12VIN to 5VOUT.