LTC1871EMS#PBF

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LTC1871EMS#PBF

IC REG CTRLR MULT TOP 10MSOP

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사양

Supplier Analog Devices Inc.
Package Tube
ProductStatus Active
OutputType Transistor Driver
Function Step-Up, Step-Up/Step-Down
OutputConfiguration Positive or Negative
Topology Boost, Flyback, SEPIC
NumberofOutputs 1
OutputPhases 1
Voltage-Supply(Vcc/Vdd) 2.5V ~ 36V
Frequency-Switching 50kHz ~ 1MHz
DutyCycle(Max) 92%
SynchronousRectifier No
ClockSync Yes
ControlFeatures Enable, Frequency Control
OperatingTemperature -40°C ~ 85°C (TA)
MountingType Surface Mount
Package/Case 10-TFSOP, 10-MSOP (0.118, 3.00mm Width)

개요

Description

LTC1871EMS#PBF is Linear Technology’s Pb-free version (PBF) of the LTC1871 DC-DC converter controller in the EMS package. The LTC1871 is a switching regulator controller used to implement a buck converter with external power stage (FETs, inductor, diode, capacitors) to generate a stable lower voltage from a higher input.
Key points:
- Function: DC-DC buck regulator controller (external FETs often required).
- Features: wide input range, adjustable output via feedback, fast transient response with current‑mode control, and built‑in protections (e.g., undervoltage, overcurrent/thermal).
- Packaging: EMS is the package type; PBF denotes Pb-free.
Typical use: power supplies for automotive, telecom, or embedded systems needing efficient voltage conversion with an external power stage.
For exact specs, pinout, and application circuits, consult the LTC1871 datasheet and the product page for LTC1871EMS#PBF.

Features

Here are the typical features of LTC1871EMS#PBF (lead-free RoHS variant) in brief:
- Wide input range and capable buck regulator (integrated high-side switch)
- Output current capability (up to about 2 A class, depending on variant)
- Current-mode PWM control with cycle-by-cycle current limit
- Adjustable/fixed switching frequency (configurable schemes for efficiency)
- Soft-start to limit inrush and prevent output overshoot
- Enable/Shutdown pin
- Overcurrent protection and thermal shutdown
- UVLO/ undervoltage lockout for reliable startup
- Protection against output overvoltage
- Small surface-mount package (EMS variants in MSOP/TSSOP family)
- Pb-Free, RoHS-compliant (PBF)
Note: Exact electrical specs (input range, output voltage options, switching frequency, and current capability) depend on the specific circuit configuration and external components. For precise numbers, consult the LTC1871EMS#PBF datasheet.

Package

An 8-pin MSOP package (MSOP-8), Pb-free.

Pinout

- Pin count: 10 pins (EMS package, lead-free PBF).
- Function: High-voltage, current‑mode PWM controller for a buck (step-down) DC‑DC converter; drives external switch to regulate output (includes enable/soft-start features).

Manufacturer

- Manufacturer: Analog Devices, Inc. (ADI). The LTC prefix comes from Linear Technology; Analog Devices acquired Linear Technology in 2017, so the part is now under ADI.
- Kind of company: A multinational American semiconductor company that designs and manufactures analog, mixed-signal, and DSP integrated circuits.

Application

LTC1871EMS#PBF is used for high‑efficiency DC‑DC buck regulation. Common applications include:
- Point‑of‑load VRMs for CPUs/GPUs and other processors
- Compact notebook/desktop power supplies
- Telecom/networking power converters
- Industrial control and automation DC‑DC regulators
- Automotive 12V power electronics
- Battery‑powered portable devices needing small size and low heat

Equivalent

I can’t give exact equivalents without the device specs. LTC1871EMS#PBF is a Linear Technology switching regulator controller, and cross-ref depends on input range, output voltage/current, switching frequency, and package. Please share these specs (or the target performance and footprint). I can then provide direct cross-references from Digi‑Key/Mouser/Analog Devices (including pin-compatible substitutes) or suggest suitable alternatives with similar topology.

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