LTC3895IFE#PBF

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LTC3895IFE#PBF

IC REG CTRLR BUCK 38TSSOP

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365 일 보장

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사양

Supplier Analog Devices Inc.
Package Tube
ProductStatus Active
OutputType Transistor Driver
Function Step-Down
OutputConfiguration Positive
Topology Buck
NumberofOutputs 1
OutputPhases 1
Voltage-Supply(Vcc/Vdd) 4V ~ 140V
Frequency-Switching 50kHz ~ 900kHz
DutyCycle(Max) 100%
SynchronousRectifier Yes
ClockSync No
ControlFeatures Current Limit, Enable, Frequency Control, Phase Control, Power Good, Soft Start
OperatingTemperature -40°C ~ 125°C (TJ)
MountingType Surface Mount
Package/Case 38-TFSOP (0.173, 4.40mm Width) 31 Leads, Exposed Pad

개요

Description

LTC3895IFE#PBF is Linear Technology (Analog Devices) a high‑current, three‑phase buck regulator controller. It’s used to build multiphase VRMs for CPU cores, GPUs, servers, and other high‑current power rails by driving external N‑channel MOSFETs.
Key points:
- Three‑phase, current‑mode buck control for high current and tight regulation
- External MOSFETs and a feedback path to set the output voltage
- Programmable switching frequency and features like soft-start and output tracking
- Protection: overcurrent/short‑circuit, overvoltage, undervoltage lockout, and thermal protection
- Packaging suffix IFE and #PBF indicate Pb‑free, RoHS‑compliant packaging
Typical use:
- VRMs for CPUs/GPUs, high‑end desktops, servers, and telecom power supplies
Note:
- For exact electrical specs, recommended operating range, pinout, and application circuits, consult the LTC3895 data sheet.

Features

LTC3895IFE#PBF features (concise):
- Dual, interleaved multiphase, synchronous buck controller for high-current VRMs
- Wide input voltage range with high efficiency via synchronous rectification
- Two-phase operation with phase interleaving to improve ripple and transient response
- Programmable switching frequency with external clock synchronization
- Current-mode control with cycle-by-cycle current limit and protection
- Adjustable output voltage with remote sense for accurate regulation
- Soft-start, voltage tracking, and ramp control
- Enable/disable control and Power-Good/diagnostic signaling
- Robust protections: overvoltage, undervoltage, overcurrent, and thermal shutdown (with latch/hiccup options)
- Fault reporting and easy integration with external power MOSFETs
- Pb-free, RoHS-compliant package suitable for compact VRMs
Note: Exact voltage ranges and current capabilities depend on the specific board design and external components.

Package

LTC3895IFE#PBF comes in a 32-pin LQFP package (Pb-free/RoHS compliant).

Pinout

- Pin count: 32 pins (Pb-free, 32‑lead package; QFN style with exposed pad).
- Function: 3‑phase interleaved synchronous buck regulator controller. It drives three external MOSFETs for a multi‑phase DC‑DC converter and provides current sense, feedback, enable/soft‑start, PGOOD, and protection features.

Manufacturer

Manufacturer: Analog Devices, Inc. (ADI). The LTC prefix comes from Linear Technology, which was acquired by ADI in 2017; LTC3895IFE#PBF is an Analog Devices/Linear Technology analog IC.
What kind of company: A global semiconductor company that designs and manufactures analog, mixed-signal, and power-management integrated circuits.

Application

Application areas: multiphase, high-current DC-DC buck regulators (VRMs) for core/graphics processor power. Ideal for servers, data-center power planes, and telecom/network equipment requiring multiple rails and high efficiency. Also suitable for desktop/workstation motherboards (CPU/memory rails), FPGAs/ASICs, and other high-end power supplies needing tight regulation and low ripple.

Equivalent

Direct one‑to‑one equivalents for LTC3895IFE#PBF do not exist. It’s a high‑current, multiphase buck controller. For substitutes, use a cross‑reference tool and compare other multiphase buck controllers with similar specs. Close families to search include TI LM5175/LM5176 (and LM5140/LM5145), Analog Devices ADP50xx multiphase controllers, and similar Onsemi parts. Always confirm pinout, features (input range, number of phases), and PbF packaging with the distributor.

배송

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배송 요금 참조 (DHL/FedEx):

DHL은: 배송 비용은 $25-$45 (0.5kg)에서 2-5 영업일의 추정적 배달 시간이 있습니다.

FedEx는: 배송 비용은 $25-$40 (0.5kg)에서 3-7 영업일의 추정적 배달 시간을 가지고 있습니다.

UPS는: 배송 비용은 $25-$45 (0.5kg)에서 3-7 영업일의 추정적 배달 시간을 가지고 있습니다.

TNT는: 배송 비용은 $25-$65 (0.5kg)에서 3-7 영업일의 추정적 배달 시간을 가지고 있습니다.

EMS는: 배송 비용은 $30-$50 (0.5kg)에서 7-15 영업일의 추정적 배달 시간을 제공합니다.

등록된 항공우편: 배송 비용은 $2-$4 (0.1kg), 예상 배달 시간 5-20 영업일.

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