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LT3491ESC8#TRPBF

Name: LT3491ESC8#TRPBF
Rating: 4.7 (12 reviews)

IC LED DRV RGLTR PWM SC70-8

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製造商。部分 #LT3491ESC8#TRPBF
包 VFSOP-8
資料表 LT3491ESC8#TRPBF DataSheet
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規格

Package	Tape & Reel (TR),Cut Tape (CT)
ProductStatus	Active
Type	DC DC Regulator
Topology	Step-Up (Boost)
InternalSwitch(s)	Yes
NumberofOutputs	1
Voltage-Supply(Min)	2.5V
Voltage-Supply(Max)	12V
Current-Output/Channel	350mA (Switch)
Frequency	2.3MHz
Dimming	PWM
Applications	Backlight
OperatingTemperature	-40°C ~ 85°C (TA)
MountingType	Surface Mount
Package/Case	8-VFSOP (0.049, 1.25mm Width)

概述

Description

LT3491ESC8#TRPBF is the LT3491 DC‑DC converter IC (Linear Technology, now Analog Devices) in the ESC8 package. ESC8 denotes an 8‑pin package with an exposed pad; TRPBF indicates Tape‑and‑Reel, lead‑free packaging.
The LT3491 is a high‑efficiency switching regulator controller used to implement DC‑DC conversion (buck or buck/boost topologies) with external components (inductor, diode/MOSFET as required). It includes features such as current‑mode control, soft‑start, enable, undervoltage lockout, overcurrent protection, and thermal shutdown, with adjustable output via feedback.
For exact electrical specs and package details, consult the LT3491 datasheet and the ESC8 package documentation.

Features

Here are typical features of the LT3491 family (LT3491ESC8#TRPBF):
- Integrated boost regulator with constant-current LED driver
- Supports drive of high-voltage LED strings from a low-voltage input
- PWM dimming and/or analog dimming control
- Open-LED and LED short-circuit protection with auto-retry
- Overcurrent protection, undervoltage lockout, thermal shutdown
- Soft-start to prevent inrush and output surge
- High efficiency switching regulator (typical high-80s to 90% range, depending on use)
- Small 8-pin package (ESC8 variant indicates package/lead-free options)
- Pb-free, Tape & Reel packaging (TRPBF)
Note: exact channel count and current ratings are per the LT3491 variant; consult the datasheet for precise specifications for LT3491ESC8#TRPBF.

Package

8-pin MSOP package (MSOP-8). TRPBF means Tape‑in, Reel packaging and Pb‑free.

Pinout

- Pin count: 8 pins (MSOP-8, ESC8 package)
- Function: LT3491 is a high-efficiency constant‑current LED driver with a switching regulator (boost/buck-boost). It drives an LED string from a primary supply, regulating current via an external sense resistor and supporting dimming.

Manufacturer

Manufacturer: Analog Devices, Inc. (ADI). The LT3491 originates from Linear Technology, which was acquired by Analog Devices in 2017.
What kind of company: Analog Devices is a global American semiconductor company that designs and manufactures high-performance analog, mixed-signal, and DSP integrated circuits for a wide range of industries and applications.

Application

LT3491ESC8#TRPBF is a multi-channel, constant-current LED driver. Applications:
- LCD panel backlighting and white LED backlight modules
- Signage and architectural lighting
- Automotive lighting (interior/exterior)
- Camera flash LED arrays and other high-power LED strings
- Portable/battery-powered lighting with PWM dimming

Equivalent

LT3491ESC8#TRPBF is a 3-channel high‑voltage, constant‑current LED driver with an integrated boost from Analog Devices. There isn’t a direct pin‑for‑pin cross reference. Closest functional substitutes are multi‑channel LED drivers such as TI TLC5940/TLC5947/TLC5970 family and STMicroelectronics L638x/L6595 families, depending on per‑channel current, voltage range, and packaging. For an exact cross reference, use a distributor tool (Digi‑Key/Mouser) with your required current per channel, number of channels, input voltage, and package.