LTC3895IFE#PBF

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LTC3895IFE#PBF

IC REG CTRLR BUCK 38TSSOP

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Specifications

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

Overview

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.

Shipping

Shipping MethodsWe

offer global shipping services through DHL, FedEx, TNT, UPS, or any other forwarder of your choice.


Shipping Fee Reference (DHL/FedEx):

DHL: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 2-5 business days.

FedEx: Shipping cost ranges from $25-$40 (0.5kg), with an estimated delivery time of 3-7 business days.

UPS: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 3-7 business days.

TNT: Shipping cost ranges from $25-$65 (0.5kg), with an estimated delivery time of 3-7 business days.

EMS: Shipping cost ranges from $30-$50 (0.5kg), with an estimated delivery time of 7-15 business days.

Registered Air Mail: Shipping cost is $2-$4 (0.1kg), with an estimated delivery time of 5-20 business days.

Payments

Payment Methods

The Payment term is 100% Prepaid.

Currently, we only accept the below payment methods:

1. PayPal

2. Credit/ Debit Card

3. Wire Transfer

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