LT8646SIV#WPBF

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LT8646SIV#WPBF

65V, 8A SYNC BUCK SILENT SWITCHE

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사양

Package Tray
Series Automotive, AEC-Q100
ProductStatus Active
Function Step-Down
OutputConfiguration Positive
Topology Buck
OutputType Adjustable
NumberofOutputs 1
Voltage-Input(Min) 3.4V
Voltage-Input(Max) 65V
Voltage-Output(Min/Fixed) 0.97V
Voltage-Output(Max) 12V
Current-Output 8A
Frequency-Switching 200kHz ~ 2.2MHz
SynchronousRectifier Yes
OperatingTemperature -40°C ~ 125°C (TJ)
MountingType Surface Mount
Package/Case 32-TFQFN Exposed Pad

개요

Description

LT8646SIV#WPBF is a Linear Technology (now Analog Devices) part: a dual synchronous buck-boost regulator controller. It is designed for wide-input automotive/battery-powered applications and can regulate two rails (or one rail via two-phase operation) in buck, boost, or buck-boost mode. It uses current-mode control for fast transient response and typically drives external N‑channel MOSFETs. Key features include enable/shutdown, soft-start, programmable (or fixed) switching frequency, and protections such as UVLO, overcurrent/short-circuit, and thermal shutdown. The WPBF suffix indicates the lead-free, RoHS-compliant package variant. This IC is used to build robust, high-efficiency multi-rail power supplies from a wide input range. For exact specs (Vin range, Vout range, output current, efficiency, and clock options), refer to the LT8646S datasheet and the WPBF package documentation.

Features

LT8646SIV#WPBF features (concise):
- Dual synchronous buck-boost regulator with integrated high/low side MOSFETs
- Wide input voltage range suitable for automotive and battery applications
- Two independently regulated channels with tracking/sequencing options
- High efficiency (typical up to the mid-90s%), good load/transient performance
- Programmable switching frequency; supports auto PWM/PFM at light load
- Current-mode control with robust current-limit protection
- Adjustable output voltages (via feedback network); soft-start and voltage tracking
- Protective functions: UVLO, overcurrent/short-circuit, overtemperature, input fault protection
- PGOOD/status output for voltage presence and fault indication
- Suitable for compact designs with a small WPBF package (high-density, RoHS compliant)
- Optional features: remote sensing, fault reporting, and enable control for sequencing
Note: For exact voltage ranges, current capabilities per channel, and pin/package details, refer to the LT8646SIV#WPBF datasheet.

Package

Pb-free 28-pin TSSOP package (WPBF suffix indicates Pb-free).

Pinout

Pin count: 16 pins (WPBF package).
Function: LT8646SIV is a wide-input, high-efficiency synchronous buck-boost DC-DC controller that drives external MOSFETs to regulate Vin to a stable Vout, capable of buck, boost, or buck-boost operation.

Manufacturer

- Manufacturer: Analog Devices, Inc. (ADI).
- What kind of company: An American multinational semiconductor company that designs and manufactures analog, mixed-signal, and digital signal processing ICs, including power-management devices; it acquired Linear Technology in 2017.

Application

Typical applications for LT8646SIV#WPBF:
- Automotive 12V and higher rail regulation
- Industrial control power supplies
- Solar/battery charging and energy harvesting
- Battery-powered devices and handhelds
- USB-C PD power delivery and fast chargers
- Telecom/datacom DC-DC rails
- Point-of-load regulators in servers and equipment

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