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LTC3789IGN#PBF

Name: LTC3789IGN#PBF
Rating: 4.7 (12 reviews)

IC REG CTRLR BUCK-BOOST 28SSOP

製造商
製造商。部分 #LTC3789IGN#PBF
包 28-SSOP (0.154, 3.90mm Width)
資料表 LTC3789IGN#PBF DataSheet
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規格

Supplier	Analog Devices Inc.
Package	Tube
ProductStatus	Active
OutputType	Transistor Driver
Function	Step-Up/Step-Down
OutputConfiguration	Positive
Topology	Buck-Boost
NumberofOutputs	2
OutputPhases	1
Voltage-Supply(Vcc/Vdd)	4V ~ 38V
Frequency-Switching	200kHz ~ 640kHz
DutyCycle(Max)	90%
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-SSOP (0.154, 3.90mm Width)

概述

Description

LTC3789IGN#PBF is a high‑voltage, multi‑output DC‑DC regulator controller from Linear Technology (now Analog Devices). It drives external MOSFETs to implement buck, boost, or buck‑boost converters for power‑supply designs, suitable for telecom, industrial, and automotive applications. Key points:
- Wide input voltage range with high efficiency via current‑mode control and, when used with external switches, supports multiple outputs.
- Features typically include programmable switching frequency, soft‑start, enables, and robust protections (overcurrent, overvoltage, undervoltage, thermal).
- Pb‑free packaging is indicated by #PBF; IGN denotes the package variant code.
- Applications: front ends and regulators in telecom/data‑center power modules, industrial PSUs, automotive systems.
- For exact specs, pinout, and reference designs, consult the LTC3789 datasheet and application notes from Analog Devices.

Features

Key features of LTC3789IGN#PBF (dual-channel, buck-boost controller):
- Dual independent channels: synchronous buck-boost operation with external N-channel FETs.
- True buck/boost capability for regulating outputs both above and below input.
- Wide input range suitable for automotive/industrial applications.
- Current-mode control with cycle-by-cycle current limit for fast transients.
- Programmable switching frequency; interleaved/multi-phase options; soft-start and output tracking.
- Remote sensing and programmable feedback/compensation networks.
- Protection: UVLO, overvoltage, overcurrent, short-circuit protection; thermal/OTP shutdown.
- Power-Good (PGOOD) signaling and fault latching/reporting.
- Enable input with track/preset/bias options.
- Pb-free package option (#PBF).
Note: Exact electrical specs (voltage ranges, frequency range, etc.) are in the datasheet. This summarizes typical features of the LTC3789 family.

Package

LTC3789IGN#PBF comes in a lead-free 28-lead TSSOP package.

Pinout

- Pin count: 28 pins (Pb-free, PBF suffix indicates Pb-free packaging).
- Function: High‑voltage, multi‑output multiphase switching regulator controller (drives external MOSFETs for multi‑phase buck/ buck‑boost power converters; includes PWM control, current sense, soft‑start and protection).

Manufacturer

- Manufacturer: Analog Devices, Inc. (ADI).
- What kind of company: A multinational semiconductor company specializing in analog, mixed-signal, and DSP integrated circuits (the LTC line comes from Linear Technology, which ADI acquired in 2017).

Application

LTC3789IGN#PBF is a high-voltage, synchronous buck–boost controller. Typical applications:
- Automotive power supplies (wide Vin, buck-boost to regulated rails)
- Industrial and renewable-energy DC-DC converters (solar, battery storage)
- Telecom and data-center auxiliary rails
- Battery-powered equipment needing high-efficiency buck-boost regulation
- Multi-rail, rugged power-management systems
(Overall emphasis on wide input range, buck-boost capability, and high efficiency.)

Equivalent

LTC3789IGN#PBF is a dual/multi‑phase, high‑voltage buck/boost controller. There isn’t an exact one-for-one substitute. Closest cross‑refs: Analog Devices LTC3891/LTC3892 (dual/multi‑phase buck), LTC3899 (multiphase with current share); TI LM5170/LM5172 family; older LTC3780/3782 as predecessors. For a precise cross, consult distributor cross-reference with your exact specs.