LTC1871HMS

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LTC1871HMS

IC REG CTRLR MULT TOP 10MSOP

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사양

Part Status Obsolete
Output Type Transistor Driver
Function Step-Up, Step-Up/Step-Down
Output Configuration Positive or Negative
Topology Boost, Flyback, SEPIC
Number of Outputs 1
Output Phases 1
Voltage - Supply (Vcc/Vdd) 2.5V ~ 36V
Frequency - Switching 50kHz ~ 1MHz
Duty Cycle (Max) 92%
Synchronous Rectifier No
Clock Sync Yes
Control Features Enable, Frequency Control
Operating Temperature -40°C ~ 150°C
Mounting Type Surface Mount
Package / Case 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Supplier Device Package 10-MSOP
Base Product Number LTC1871

개요

Description

The LTC1871HMS is a high-performance voltage mode PWM (Pulse Width Modulation) controller designed for DC-DC converter applications. Manufactured by Analog Devices, it provides a flexible and efficient solution for generating regulated output voltage from a wide range of input voltages. The device features an adjustable output voltage range and incorporates a built-in error amplifier, allowing for precise regulation.
Key features include a wide input voltage range, high efficiency, and the ability to drive an external transistor for higher output current capabilities. The LTC1871HMS also offers protection features such as overvoltage and undervoltage lockout, ensuring reliable operation under varying conditions. Its compact MSOP-8 package makes it suitable for space-constrained applications.
Overall, the LTC1871HMS is ideal for use in applications such as portable devices, battery-powered systems, and point-of-load converters, where efficiency and compact design are critical.

Features

The LTC1871HMS is a high-performance voltage regulator and DC-DC converter designed for power management applications. Key features include:
1. Wide Input Voltage Range: Operates from 5V to 60V, allowing versatility in various power supply applications.
2. High Efficiency: Achieves efficiencies up to 95%, minimizing heat generation and extending battery life.
3. Adjustable Output Voltage: Provides a configurable output voltage from 1.25V to 30V.
4. Low Quiescent Current: Features low standby power consumption, ideal for battery-operated devices.
5. Built-In Protection Features: Includes overvoltage, undervoltage, and thermal shutdown protections to enhance reliability.
6. Synchronous Operation: Employs synchronous rectification to improve efficiency, especially in step-down (buck) applications.
7. Compact Package: Available in a small MSOP-8 package, facilitating space-saving designs.
8. Fast Transient Response: Delivers quick recovery during load changes, ensuring stable output.
These features make the LTC1871HMS suitable for a range of applications, including automotive, industrial, and portable electronics.

Package

The LTC1871HMS is packaged in a 16-lead MSOP (Mini Small Outline Package) form factor. This compact size is designed for space-constrained applications.

Pinout

The LTC1871HMS is a high-performance voltage mode DC/DC converter with a total pin count of 16. Its primary functions include:
1. VIN (Pin 1) - Power input.
2. SW (Pins 2 & 3) - Switch node for inductor connection.
3. VOUT (Pin 4) - Output voltage sense point.
4. GND (Pin 5) - Ground reference.
5. COMP (Pin 6) - Compensation for stability.
6. FB (Pin 7) - Feedback pin for voltage regulation.
7. SS (Pin 8) - Soft-start control.
8. RAMP (Pin 9) - Ramp compensation for PWM.
9. CT (Pin 10) - Timing capacitor connection.
10. ILIM (Pin 11) - Current limit setting.
11. ENABLE (Pin 12) - On/Off control.
12. PGND (Pin 13) - Power ground.
13. VREF (Pin 14) - Reference voltage output.
14. NC (Pins 15 & 16) - No connect; not internally bonded.
The LTC1871HMS is designed for efficient step-down applications, providing adjustable output voltages.

Manufacturer

The LTC1871HMS is manufactured by Analog Devices, Inc. Analog Devices is a global semiconductor company that specializes in the design and manufacturing of analog, mixed-signal, and digital signal processing integrated circuits (ICs). Founded in 1965 and headquartered in Norwood, Massachusetts, Analog Devices serves a wide range of industries, including communications, automotive, healthcare, and industrial automation. The company's products are integral to various applications, including signal processing, data conversion, and power management solutions.

Application

The LTC1871HMS is a high-performance, high-efficiency boost converter used in various applications, including battery-powered devices, portable electronics, LED drivers, and automotive power supplies. It is suitable for applications requiring step-up voltage regulation, such as powering microcontrollers from low-voltage sources, and in systems needing efficient energy conversion in compact designs.

Equivalent

Equivalent products to the LTC1871HMS include the MAX15064, TPS43030, and LM25117. These chips offer similar functionality for high-efficiency voltage regulation and power management. Always verify specific requirements, such as input/output voltage ranges and current ratings, before selection.

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