LTC3370IUH

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LTC3370IUH

+Nomenclature

IC REG BUCK ADJ 2A QD 32QFN

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Spécifications

Attribut Valeur
Package / Case Tube
Part Status Obsolete
Function Step-Down
Output Configuration Positive
Topology Buck
Output Type Adjustable
Number of Outputs 4
Voltage - Input (Min) 2.7V
Voltage - Input (Max) 5.5V
Voltage - Output (Min/Fixed) 0.8V
Voltage - Output (Max) 5.5V
Current - Output 2A
Frequency - Switching 2MHz
Synchronous Rectifier Yes
Operating Temperature -40°C ~ 125°C (TJ)
Mounting Type Surface Mount

Présentation

Description

The LTC3370IUH is Linear Technology’s (now Analog Devices) buck/boost DC-DC regulator in a small package. It is intended for portable, battery-powered systems where the input voltage can be higher or lower than the desired output, so it can operate in buck, boost, or buck-boost mode to maintain a stable output. External energy-storage components (inductor, capacitors) and a feedback network set the output voltage; the device includes protections such as overcurrent, thermal shutdown, and undervoltage protection, with an enable/shutdown control for power management. The IUH suffix denotes a specific package and temperature rating for this variant. For exact electrical specs (input/output ranges, current capability, efficiency, pinout) consult the LTC3370 datasheet and application notes.

Features

LTC3370IUH features:
- I2C-compatible interface for monitoring, control, and sequencing
- Three synchronous buck regulators (multi-rail) with independently programmable outputs
- High efficiency via synchronous rectification and fast transient response
- Wide input voltage range suitable for automotive/industrial applications
- Per-channel enable/disable, soft-start, and sequencing capabilities
- Protections: UVLO, overvoltage, overcurrent/short-circuit, and thermal shutdown
- Remote sense/feedback options for accurate regulation
- Status outputs (e.g., Power Good) for system monitoring
- Adjustable switching frequency for +/−demanding designs
- Compact package suitable for space-constrained designs

Pinout

- Pin count: 28 pins (LTC3370IUH package is a 28-pin device).
- Function: High-voltage, multi‑phase DC‑DC controller (buck/boost) used to regulate power rails (e.g., CPU VRMs); requires external MOSFETs and supports interleaved multi-phase operation.

Manufacturer

Analog Devices, Inc. (ADI). It is an American multinational semiconductor company that designs and manufactures analog, mixed-signal, and digital signal processing (DSP) integrated circuits. The LTC prefix comes from Linear Technology, which ADI acquired in 2017.

Application

LTC3370IUH is a high-efficiency buck-boost DC-DC controller suitable for wide-input, multi-rail power supplies. Common applications include:
- Battery-powered portable electronics (phones, tablets, wearables)
- Automotive power management (wide Vin, multiple regulated rails)
- Telecom and industrial DC-DC power modules and PMICs
- High-performance compute rails (DSPs, FPGAs, GPUs) and ancillary supplies
- Solar/energy-harvesting and standby/battery-backup power systems
- Medical devices with battery-backed rails
It enables efficient conversion across broad input ranges with compact, multi-rail solutions.

Package

28-pin TSSOP package (lead-free, RoHS-compliant).

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