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LTC7878AUH#TRPBF

Name: LTC7878AUH#TRPBF
Rating: 4.7 (12 reviews)

80V PEAK CURRENT MODE BUCK-BOOST

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規格

Part Status	Active
Base Product Number	LTC7878
Output Type	Transistor Driver
Function	Step-Up/Step-Down
Output Configuration	Positive
Topology	Buck-Boost
Number of Outputs	1
Output Phases	1
Voltage - Supply (Vcc/Vdd)	5V ~ 70V
Frequency - Switching	50kHz ~ 800kHz
Duty Cycle (Max)	90% (Typ)
Synchronous Rectifier	Yes
Clock Sync	Yes
Control Features	Current Limit, Dead Time Control, Frequency Control, Phase Control, Soft Start
Operating Temperature	-40°C ~ 125°C (TJ)
Mounting Type	Surface Mount
Package	32-WFQFN Exposed Pad
Supplier Device Package	32-QFN (5x5)
Packaging	Cut Tape (CT), Tape & Reel (TR)

概述

Description

LTC7878AUH#TRPBF is the part number for Linear Technology (now Analog Devices) LTC7878, a high‑voltage, multi‑output DC‑DC regulator controller designed for multi‑rail VRMs. It uses external N‑channel MOSFETs and inductors to generate multiple regulated rails from a single high‑voltage input. Key features (typical for this family) include programmable switching frequency, multiphase/current‑sharing capability, soft‑start, enable/fault control, and protections such as over‑current, over/undervoltage, and thermal monitoring. The AUH suffix denotes the specific package, and TRPBF indicates Tape & Reel, Pb‑free packaging. This device is intended for CPU/GPU VRMs, telecom, and industrial power architectures where multiple precise rails are required. For exact electrical specs (input range, max output current, number of rails, pinout, and efficiency), consult the LTC7878 datasheet and package drawings. If you want, I can pull out the key specs from the datasheet.

Features

Here are the key features of the LTC7878AUH#TRPBF (datasheet summary):
- Wide input range: 4.5V to 60V
- Dual high-current synchronous buck controller (multiphase capability)
- Programmable switching frequency (up to about 1 MHz, typical)
- Current-mode PWM with slope compensation
- Adjustable output voltage with soft-start; remote sensing option
- Enable, undervoltage lockout, and fault/diagnostic feedback
- Overcurrent/short‑circuit protection and current-limit
- Overvoltage protection and thermal/overtemperature shutdown
- Power-good signaling and fault reporting
- High efficiency from intrinsic synchronous rectification
- Pb-free, automotive-style AUH variant in Tape-and-Reel packaging (TRPBF)
Note: for exact numbers and detailed operation (pinout, timing, and protection thresholds), refer to the official datasheet.

Package

QFN (Quad Flat No-Lead) package with exposed pad, Pb-free, in Tape & Reel (TRPBF).

Pinout

Pin count: 32 pins (32-pin package).
Function: Dual high‑voltage, multiphase buck/boost controller that drives external MOSFETs for multi‑rail VRM applications (PWM control with independent channels).

Manufacturer

Manufacturer: Analog Devices, Inc. (ADI). The LTC prefix comes from Linear Technology, which ADI acquired in 2017, and now markets as part of ADI.
What kind of company: A global semiconductor company that designs and manufactures analog, mixed-signal, and related integrated circuits (ICs) and sensors.

Application

Applications of LTC7878AUH#TRPBF:
- Multi-rail VRMs for CPUs/GPUs/FPGA cores
- High‑current DC‑DC power systems for servers, data centers, and telecom equipment
- Industrial and automotive power Supplies needing multiple regulated rails
- Embedded/edge computing and instrumentation requiring rugged, efficient high‑voltage to low‑voltage conversion