LTC4370CMS#PBF

Product Overview

Category

LTC4370CMS#PBF belongs to the category of power management integrated circuits (PMICs).

Use

This PMIC is primarily used for power supply protection and load sharing in various electronic systems.

Characteristics

• Provides protection against reverse voltage, overvoltage, and undervoltage conditions.
• Enables seamless load sharing between multiple power sources.
• Offers adjustable current limits for precise control.
• Supports hot-swapping of power sources without disruption.
• Features a compact and space-saving package.

Package

LTC4370CMS#PBF is available in a miniature 10-pin MSOP (Mini Small Outline Package) with exposed pad for enhanced thermal performance.

Essence

The essence of LTC4370CMS#PBF lies in its ability to ensure reliable and uninterrupted power supply by protecting against voltage anomalies and facilitating smooth transition between power sources.

Packaging/Quantity

This product is typically packaged in reels or tubes, containing a quantity of 250 units per package.

Specifications

• Input Voltage Range: 2.9V to 18V
• Operating Temperature Range: -40°C to 85°C
• Maximum Continuous Current: 4A
• Reverse Voltage Protection Threshold: -40V
• Overvoltage Protection Threshold: Adjustable from 3V to 18V
• Undervoltage Protection Threshold: Adjustable from 2.5V to 17.5V

Detailed Pin Configuration

1. VIN: Input voltage pin
2. GATE: Gate drive output for external N-channel MOSFET
3. VOUT: Output voltage pin
4. FB: Feedback pin for adjusting overvoltage and undervoltage thresholds
5. OVSET: Overvoltage threshold adjustment pin
6. UVSET: Undervoltage threshold adjustment pin
7. GND: Ground pin
8. SS: Soft-start capacitor connection pin
9. FLT: Fault indicator output pin
10. EN: Enable pin for turning the device on/off

Functional Features

1. Reverse Voltage Protection: LTC4370CMS#PBF safeguards the system by preventing reverse voltage from damaging the power supply.
2. Overvoltage and Undervoltage Protection: The device allows adjustable thresholds to protect against excessive or insufficient input voltages.
3. Load Sharing: It enables seamless sharing of load between multiple power sources, ensuring continuous operation.
4. Hot-Swap Capability: The PMIC supports hot-swapping of power sources without causing disruptions or voltage spikes.
5. Fault Indication: The FLT pin provides a fault indication signal when any protection mechanism is triggered.

Advantages and Disadvantages

Advantages

• Comprehensive protection against reverse voltage, overvoltage, and undervoltage conditions.
• Precise control over current limits.
• Smooth transition between power sources.
• Compact package size for space-constrained applications.

Disadvantages

• Limited maximum continuous current of 4A may not be suitable for high-power applications.
• Requires external N-channel MOSFET for gate drive.

Working Principles

LTC4370CMS#PBF operates by continuously monitoring the input voltage and comparing it with the user-adjustable overvoltage and undervoltage thresholds. If the voltage exceeds the set limits, the device takes appropriate action to protect the system. It utilizes an external N-channel MOSFET for gate drive to control the power flow and enable load sharing between multiple sources.

Detailed Application Field Plans

LTC4370CMS#PBF finds application in various electronic systems that require reliable power supply protection and load sharing. Some potential fields where this PMIC can be utilized include: - Industrial automation systems - Telecommunications equipment - Data centers and server racks - Automotive electronics - Medical devices

Detailed and Complete Alternative Models

1. LTC4370IMS#PBF: Similar to LTC4370CMS#PBF, but available in an MSOP package without the exposed pad.
2. LTC4370IDD#PBF: Offers the same functionality as LTC4370CMS#PBF but comes in a DFN (Dual Flat No-Lead) package for space-constrained applications.
3. LTC4370HMS#PBF: High-temperature variant of LTC4370CMS#PBF, suitable for operation in harsh environments.

These alternative models provide similar protection features and load sharing capabilities, catering to different packaging and temperature requirements.

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