規格
| 屬性 | 價值 |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Part Status | Active |
| Type | DC DC Regulator |
| Topology | Step-Up (Boost) |
| Internal Switch(s) | Yes |
| Number of Outputs | 1 |
| Voltage - Supply (Min) | 2.5V |
| Voltage - Supply (Max) | 12V |
| Current - Output / Channel | 350mA (Switch) |
| Frequency | 2.3MHz |
| Dimming | PWM |
| Applications | Backlight |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
概述
Description
LT3491ESC8#TRPBF is Linear Technology’s LT3491 LED driver in an 8-pin Pb-free package, shipped in Tape & Reel (TRPBF). It is a high‑efficiency constant‑current LED driver designed to power one or more LED strings with stable current despite supply changes. The LED current is set by an external sense resistor; options for dimming include PWM and analog control. It includes protection features such as overcurrent, undervoltage lockout, and thermal shutdown. The ESC8 suffix denotes a specific 8‑pin package variant, and TRPBF indicates Tape & Reel, Pb‑free packaging. Typical applications: automotive lighting, backlighting, and general LED illumination. For exact pinout, current range, and detailed usage, consult the LT3491 datasheet.
Features
Concise features of LT3491ESC8#TRPBF:
- 8-pin ESC8 Pb-free package (TRPBF)
- High-efficiency buck LED driver with integrated current regulator
- Wide input voltage range (suitable for automotive applications)
- LED current set by external sense resistor
- Dimming options: PWM and analog dimming support
- Protection: undervoltage lockout, overcurrent/short-circuit protection, overtemperature shutdown
- Enable/shutdown control and soft-start for controlled startup
- Small footprint and thermally enhanced package suitable for compact lighting designs
Note: For exact electrical specs and pinout, refer to the LT3491 datasheet.
- 8-pin ESC8 Pb-free package (TRPBF)
- High-efficiency buck LED driver with integrated current regulator
- Wide input voltage range (suitable for automotive applications)
- LED current set by external sense resistor
- Dimming options: PWM and analog dimming support
- Protection: undervoltage lockout, overcurrent/short-circuit protection, overtemperature shutdown
- Enable/shutdown control and soft-start for controlled startup
- Small footprint and thermally enhanced package suitable for compact lighting designs
Note: For exact electrical specs and pinout, refer to the LT3491 datasheet.
Pinout
- Pin count: 8 pins (8-pin package)
- Function: LT3491ESC8#TRPBF is a constant‑current LED driver built as a switching regulator to drive LED strings with adjustable current (via sense resistor) and dimming control.
- Function: LT3491ESC8#TRPBF is a constant‑current LED driver built as a switching regulator to drive LED strings with adjustable current (via sense resistor) and dimming control.
Manufacturer
Analog Devices, Inc. (ADI). It is a global semiconductor company that designs and manufactures analog, mixed-signal, and DSP integrated circuits. The LT3491 originated from Linear Technology, which ADI acquired in 2017.
Application
LT3491ESC8#TRPBF is a compact 8-pin LED constant-current driver. Typical applications:
- LCD backlighting and signage illumination
- Portable/battery-powered LED lighting and flash
- Automotive interior/exterior lighting
- Architectural and decorative lighting
- Any system needing efficient, regulated LED current from a wide input range in a small package
- LCD backlighting and signage illumination
- Portable/battery-powered LED lighting and flash
- Automotive interior/exterior lighting
- Architectural and decorative lighting
- Any system needing efficient, regulated LED current from a wide input range in a small package
Package
An 8-pin MSOP package with exposed pad (MSOP-8 with EP). TRPBF means Tape-and-Reel, Pb-free.
