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LT3757EDD#TRPBF

Name: LT3757EDD#TRPBF
Rating: 4.7 (12 reviews)

IC REG CTRLR MULT TOPOLOGY 10DFN

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Mfr.부분 #LT3757EDD#TRPBF
패키지 10-WFDFN Exposed Pad
데이터시트 LT3757EDD#TRPBF DataSheet
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사양

Supplier	Analog Devices Inc.
Package	Tape & Reel (TR),Cut Tape (CT)
ProductStatus	Active
OutputType	Transistor Driver
Function	Step-Up, Step-Up/Step-Down
OutputConfiguration	Positive and Negative
Topology	Boost, Flyback, SEPIC
NumberofOutputs	1
OutputPhases	1
Voltage-Supply(Vcc/Vdd)	2.9V ~ 40V
Frequency-Switching	100kHz ~ 1MHz
SynchronousRectifier	No
ClockSync	Yes
ControlFeatures	Enable, Frequency Control, Soft Start
OperatingTemperature	-40°C ~ 125°C (TJ)
MountingType	Surface Mount
Package/Case	10-WFDFN Exposed Pad

개요

Description

LT3757EDD#TRPBF is the Linear Technology (Analog Devices) LT3757 LED-driver controller in the EDD package, shipped in Pb-free Tape & Reel (TRPBF). The LT3757 is a high-voltage, buck/boost (and can be used in buck-boost LED driver configurations) controller intended to drive high-current LED strings.
Key points:
- External MOSFET and current-sense resistor required; the controller regulates LED current via a feedback pin.
- Wide input voltage range suitable for LED backlights and other high-voltage LED applications.
- Adjustable output current (via sense resistor); supports dimming (PWM or equivalent dim inputs).
- Protections: overcurrent/short-circuit, undervoltage lockout, thermal protection.
- Common uses: LED backlighting, automotive lighting, general-purpose high-voltage LED drivers.
Package note:
- EDD denotes the specific 8-pin/leadframe package variant.
- TRPBF indicates Tape & Reel packaging and Pb-free (RoHS-compliant) version.

Features

LT3757EDD#TRPBF features (concise):
- Dual constant-current LED driver controller (two independent channels)
- Wide input voltage range, suitable for automotive/industrial use
- Independent LED current setting per channel via ISET and sense resistors
- High-efficiency switching regulation; supports PWM and analog dimming
- Adjustable switching frequency (via RT or internal preset)
- Soft-start and stable current regulation to minimize inrush
- Protection: input undervoltage/overvoltage, overcurrent/short-circuit, thermal shutdown
- Open-LED protection with fault indication
- Fault/Status output for monitoring and diagnostics
- RoHS-compliant packaging; EDD package with TRPBF tape-and-reel
Note: For exact electrical specs (voltage ranges, current limits, frequency, and pinout), refer to the LT3757 datasheet.

Package

Package type: EDD, which is a 20‑lead TSSOP. Pb-free, Tape & Reel version (TRPBF).

Pinout

- Pin count: 8 pins (8-pin package)
- Function: High‑voltage DC‑DC switching regulator controller (buck/boost). It drives an external N‑channel MOSFET to regulate the output from a high input voltage (used for automotive/industrial power supplies; supports buck, boost, and buck‑boost modes with current‑mode control and protection features).

Manufacturer

Analog Devices, Inc. (ADI). It is a multinational semiconductor company that designs and manufactures analog, mixed-signal, and digital signal processing integrated circuits (ADI acquired Linear Technology, the original LT supplier, in 2017).

Application

LT3757EDD#TRPBF is a dual-channel, wide-input LED driver with buck/boost capability for constant-current LED strings. Typical applications:
- High-brightness LED backlighting for LCD TVs/monitors
- Automotive LED lighting and dashboard/backlighting
- Signage, architectural and general-purpose LED lighting
- Off-line or battery-powered LED lighting requiring accurate current control and dimming