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LT3782EFE

Name: LT3782EFE
Rating: 4.7 (12 reviews)

IC REGULATOR

メーカー
Mfr。パート #LT3782EFE
パッケージ 28-TSSOP (0.173, 4.40mm Width) Exposed Pad
データシート
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仕様

Supplier	Analog Devices Inc.
Package	Tube
ProductStatus	Obsolete
OutputType	Transistor Driver
Function	Step-Up
OutputConfiguration	Positive
Topology	Boost
NumberofOutputs	2
OutputPhases	2
Voltage-Supply(Vcc/Vdd)	6V ~ 40V
Frequency-Switching	154kHz ~ 465kHz
DutyCycle(Max)	94%
SynchronousRectifier	Yes
ClockSync	Yes
ControlFeatures	Enable, Reset, Soft Start
OperatingTemperature	-40°C ~ 85°C
MountingType	Surface Mount
Package/Case	28-TSSOP (0.173, 4.40mm Width) Exposed Pad

概要

Description

LT3782EFE is a Linear Technology (now Analog Devices) high‑voltage buck/boost DC‑DC controller. It drives external power MOSFETs to realize buck, boost, or buck‑boost regulation over a wide input range, making it suitable for automotive and industrial power supplies with fluctuating inputs. The device uses fixed‑frequency, current‑mode control for high efficiency and stable transient response. Key features typically include soft‑start, programmable switching frequency, feedback for output voltage, undervoltage lockout, overcurrent/short‑circuit protection, and thermal protection. The “EFE” suffix denotes a RoHS‑compliant package variant of the part. Usage scenarios include generating stable rails from varying sources (e.g., automotive transients, battery packs) for CPUs, FPGAs, memory, and other peripherals. For exact electrical specs, recommended operating conditions, and pinout, consult the LT3782EFE datasheet and application notes.

Features

LT3782EFE features (concise):
- Dual, constant-current LED driver controller
- Wide input range (about 4V to 60V), suitable for automotive/industrial use
- Buck-boost regulation to drive LED strings from a wide input
- Two independently programmable LED currents
- Requires external N-channel MOSFETs; current set by sense resistors
- Fixed-frequency operation with selectable switching frequency
- DIM interface for brightness control: PWM and/or analog dimming
- Protections: cycle-by-cycle current limit, open-LED protection with hiccup, overvoltage, and thermal shutdown
- Soft-start and accurate current regulation via internal reference
- Suitable for multi-LED backlighting applications with robust protection and dimming options
Note: For exact voltage/current specs and pinout, refer to the LT3782EFE datasheet.

Package

LT3782EFE is offered in a 20-pin TSSOP package (lead-free).

Pinout

Pin count: 8 pins (package suffix EFE corresponds to an MSOP-8/SO-8 style package).
Function: LT3782EFE is a high‑voltage, current‑mode switching regulator controller intended to drive external MOSFETs to implement a buck/boost/buck‑boost converter (adjustable output with features like soft‑start and protection).

Manufacturer

Analog Devices, Inc. (the Linear Technology brand). Linear Technology was a U.S. semiconductor company specializing in analog, mixed-signal and power-management integrated circuits; it is now part of Analog Devices.

Application

LT3782EFE is a high‑voltage, wide-input DC‑DC controller suitable for buck, boost and buck‑boost configurations. Applications include automotive and industrial power supplies, battery‑powered equipment, LED drivers (constant‑current), solar/battery charging, and telecom/power‑adapter systems needing efficient high‑voltage regulation.

Equivalent

LT3782EFE is a 60 V input dual synchronous buck-boost controller. Direct drop-in equivalents are limited, but similar functionality can be found in:
- TI LM5170/LM5172 family (60 V buck-boost controllers)
- Maxim MAX1771/MAX1772 buck-boost controllers
- Analog Devices ADP2370/ADP2371 family (60 V, buck-boost style)
If exact pinout/features are needed, search specifically for “60 V buck-boost controllers” or provide required specs to tailor alternatives.