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LTC3787IUFD#TRPBF

Name: LTC3787IUFD#TRPBF
Rating: 4.7 (12 reviews)

IC REG CTRLR BOOST 28QFN

製造商
製造商。部分 #LTC3787IUFD#TRPBF
包 28-WFQFN Exposed Pad
資料表 LTC3787IUFD#TRPBF DataSheet
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規格

Supplier	Analog Devices Inc.
Package	Tape & Reel (TR),Cut Tape (CT)
Series	PolyPhase®
ProductStatus	Active
OutputType	Transistor Driver
Function	Step-Up
OutputConfiguration	Positive
Topology	Boost
NumberofOutputs	2
OutputPhases	2
Voltage-Supply(Vcc/Vdd)	4.5V ~ 38V
Frequency-Switching	105kHz ~ 760kHz
DutyCycle(Max)	96%
SynchronousRectifier	Yes
ClockSync	No
ControlFeatures	Current Limit, Enable, Frequency Control, Power Good, Soft Start
OperatingTemperature	-40°C ~ 125°C (TJ)
MountingType	Surface Mount
Package/Case	28-WFQFN Exposed Pad

概述

Description

- LTC3787 is a high-voltage, wide-input-range, multi-phase DC-DC controller (from Linear Technology, now Analog Devices). It acts as the control engine for high-power buck/boost converters, typically driving external MOSFETs in interleaved phases (up to several phases) to regulate outputs from a wide input.
- Key role: provides current‑mode control, programmable switching frequency, soft-start, overcurrent/overvoltage protections, and multi-rail or single-rail regulation in telecom, servers, and industrial power supplies.
- The suffix IUFD#TRPBF is a manufacturing/packaging code:
- IUFD encodes device grade and package variant (e.g., industrial temperature range and specific package type).
- #TRPBF indicates Tape-and-Reel packaging and Pb-free (lead-free) manufacturing.
In short: LTC3787IUFD#TRPBF is the same LTC3787 part, just a particular industrial-temperature version in a specific Pb-free package delivered on tape and reel.

Features

Here are the core features of LTC3787IUFD#TRPBF (high-level):
- Dual synchronous buck controller for multi-rail supplies (two channels, external MOSFETs)
- Wide input voltage range up to about 60V
- Cycle-by-cycle current-mode control with overcurrent protection
- Independent gate-drive outputs for high-side and low-side MOSFETs
- Programmable switching frequency with optional external synchronization
- Soft-start and output voltage tracking/soft-start ramp
- Remote sense/voltage feedback and programmable output regulation
- Protections: undervoltage lockout, overvoltage protection, thermal shutdown
- Enable and Power-Good signaling for sequencing and monitoring
- Suitable for high-efficiency operation via synchronous rectification
- RoHS-compliant Pb-free packaging; TRPBF indicates Tape-and-Reel, Pb-Free
Note: Requires external MOSFETs and supportive passive components per design. Packaging variant: IUFD#TRPBF implies specific RoHS/tape-and-reel options.

Package

QFN (leadless) package with an exposed pad, specifically a 32‑lead QFN (7×7 mm). Pb‑free, Tape & Reel.

Pinout

- Pin count: 28 pins (QFN package).
- Function: High‑voltage, multi‑phase buck/boost controller with dual PWM channels and gate drivers for multiphase VRMs (used to regulate CPU/core rails).

Manufacturer

- Manufacturer: Analog Devices, Inc. (ADI). The LTC parts were originally from Linear Technology, which ADI acquired in 2017.
- Company type: A multinational semiconductor company that designs and manufactures analog, mixed-signal, and digital signal processing integrated circuits (including power-management ICs).

Application

LTC3787IUFD#TRPBF is a wide-input buck-boost DC-DC controller. Applications include automotive power systems (12/24V with transients), battery charging/discharging circuits, solar/battery storage DC-DC converters, and telecom/industrial power supplies needing efficient buck-boost regulation over a wide input range.