LTC1261LCMS8

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LTC1261LCMS8

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Spécifications

Package / Case MSOP-8
Minimum Operating Temperature 0 C
Maximum Operating Temperature + 70 C
Series LTC1261L
Brand Analog Devices
Product Type Switching Voltage Regulators
Subcategory PMIC - Power Management ICs
Mounting Style SMD/SMT
Shipping Restrictions Mouser does not presently sell this product in your region.
Operating Supply Current 650 uA
Topology Inverting
Output Voltage - 1.23 V to - 5 V
Output Current 20 mA
Number of Outputs 1 Output
Input Voltage - Min 2.7 V
Input Voltage - Max 5.25 V
Switching Frequency 650 kHz
Type Switched Capacitor Regulated Voltage Inverter

Vue d'ensemble

Description

The LTC1261LCMS8 is a micropower switched-capacitor voltage inverter designed to generate a regulated negative voltage from a positive input voltage. It operates with an input voltage range from 4.5V to 10V and provides a stable output voltage of -5V. The device is particularly useful in battery-powered applications due to its low power consumption and efficiency. With a typical no-load supply current of 80µA and a shutdown current of just 1µA, it is ideal for portable devices.
Housed in an 8-pin MSOP package, the LTC1261LCMS8 features a user-defined output current capability, determined by the external components used in the circuit. The device utilizes a charge pump architecture, making it compact and easy to integrate into various designs. It includes internal oscillator circuitry for clock generation and requires only a few external capacitors for operation.
Key features include short-circuit protection, thermal shutdown, and an output with less than 1% regulation error. The LTC1261LCMS8 is suitable for applications such as LCD biasing, operational amplifier power supplies, and other situations where a negative voltage rail is needed.

Features

The LTC1261LCMS8 is a switched-capacitor voltage inverter designed to generate a regulated negative voltage output from a positive input voltage. Key features include:
1. Input Voltage Range: It operates over a wide input voltage range, typically from 4.5V to 8V.
2. Output Voltage: It provides a regulated negative output voltage, suitable for a variety of applications requiring negative supply rails.
3. Efficiency: The device is designed with high efficiency in mind, making it suitable for battery-powered applications.
4. Low Quiescent Current: It features low quiescent current, which helps to minimize power consumption when the device is in an idle state.
5. Compact Form Factor: Offered in an 8-lead MSOP package, the LTC1261LCMS8 is compact, making it ideal for space-constrained applications.
6. Simple Design: The device requires few external components, which simplifies the design process and reduces overall system cost.
7. Protection Features: It includes built-in protection features such as thermal shutdown to safeguard against overheating.
These features make the LTC1261LCMS8 suitable for use in applications like LCD contrast biasing, operational amplifier power supplies, and other systems needing a negative voltage rail.

Package

The LTC1261LCMS8 is packaged in an 8-lead MSOP (Mini Small Outline Package). This type of package is compact, suitable for space-constrained applications, and commonly used in integrated circuits for efficient heat dissipation and electrical performance.

Pinout

The LTC1261LCMS8 is a switched-capacitor voltage inverter designed to generate a negative voltage from a positive input voltage. It comes in an 8-pin MSOP (Mini Small Outline Package). The pin functions are as follows:
1. CAP+: Positive terminal for the charge pump capacitor.
2. GND: Ground.
3. CAP-: Negative terminal for the charge pump capacitor.
4. OUT: Negative voltage output.
5. LV: Low voltage pin; used to optimize performance when the input voltage is below 3.5V.
6. V+: Positive voltage input.
7. SHDN: Shutdown pin; active low, used to disable the device and reduce power consumption.
8. NC: No connect, or internally not connected.
The device is typically used for applications needing compact and efficient inversion of a positive supply, suitable for powering negative voltage analog circuits.

Manufacturer

The LTC1261LCMS8 is manufactured by Linear Technology Corporation, which is now part of Analog Devices, Inc. Linear Technology was known for designing, manufacturing, and marketing a broad line of high-performance analog integrated circuits. These products were utilized in a wide array of applications, including telecommunications, cellular telephones, networking products, notebook and desktop computers, computer peripherals, video/multimedia, industrial instrumentation, automotive electronics, factory automation, process control, and military and space systems. In 2017, Linear Technology was acquired by Analog Devices, a company that continues to offer advanced semiconductor solutions across various sectors, including analog, mixed-signal, power management, radio frequency (RF), and digital and sensor technologies.

Application

The LTC1261LCMS8 is a switched-capacitor voltage inverter designed for generating a negative supply voltage from a positive input voltage. It is commonly used in applications such as powering op-amps, data acquisition systems, and signal processing circuits where a negative voltage is required. Additionally, it is useful in battery-powered devices, portable electronics, and other situations where efficient DC-DC conversion is needed to minimize component count and power dissipation.

Equivalent

The LTC1261LCMS8 chip is a switched-capacitor voltage inverter. Equivalent products include:
1. MAX660 by Maxim Integrated
2. ICL7660 by Intersil (Renesas)
3. TC1044 by Microchip Technology
These chips offer similar functionality and are used to generate a negative voltage from a positive supply. Always verify electrical specifications and pin configurations for compatibility with your application.

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