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LTC1878EMS8
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- Mfr。パート #LTC1878EMS8
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仕様
| Package / Case | MSOP-8 |
| Minimum Operating Temperature | - 40 C |
| Maximum Operating Temperature | + 85 C |
| Series | LTC1878 |
| 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 | 10 uA |
| Topology | Buck |
| Output Voltage | 800 mV to 6 V |
| Output Current | 600 mA |
| Number of Outputs | 1 Output |
| Input Voltage - Min | 2.65 V |
| Input Voltage - Max | 6 V |
| Switching Frequency | 550 kHz |
概要
Description
The LTC1878EMS8 is a high-efficiency step-down DC/DC converter designed by Linear Technology, now part of Analog Devices. It is intended for use in portable electronics where space and power efficiency are critical. The device operates with a fixed-frequency, current-mode architecture and can drive loads up to 600mA with excellent line and load regulation. The LTC1878EMS8 features a wide input voltage range, typically from 2.5V to 10V, making it suitable for single- or dual-cell lithium-ion battery-powered applications.
Key features include low quiescent current and Burst Mode operation, which enhance battery life in portable devices by reducing power consumption at light loads. The LTC1878EMS8 also provides low output voltage ripple and requires minimal external components, facilitating a compact solution footprint. Its high efficiency, which can exceed 90% in some configurations, makes it ideal for battery-operated devices such as smartphones, tablets, and other handheld gadgets. The device is available in an MSOP-8 package, which is compact and thermally efficient, supporting ease of integration into various designs.
Key features include low quiescent current and Burst Mode operation, which enhance battery life in portable devices by reducing power consumption at light loads. The LTC1878EMS8 also provides low output voltage ripple and requires minimal external components, facilitating a compact solution footprint. Its high efficiency, which can exceed 90% in some configurations, makes it ideal for battery-operated devices such as smartphones, tablets, and other handheld gadgets. The device is available in an MSOP-8 package, which is compact and thermally efficient, supporting ease of integration into various designs.
Features
The LTC1878EMS8 is a high-efficiency, step-down DC/DC converter designed by Linear Technology (now part of Analog Devices). Key features include:
1. Efficiency: It offers high efficiency, due in part to its low quiescent current of approximately 10µA, making it suitable for battery-operated applications.
2. Input Voltage Range: It supports a wide input voltage range typically from 2.5V to 10V, accommodating various power sources.
3. Output: The device can deliver up to 600mA of continuous output current, with a fixed output voltage option or an adjustable output.
4. Switching Frequency: The converter operates at a fixed high frequency of 550kHz, which allows for smaller external components and a compact design.
5. Low Dropout Operation: It features a low dropout operation, extending battery life.
6. Burst Mode Operation: The LTC1878 uses Burst Mode operation to maintain high efficiency at low loads.
7. Thermal Protection: It includes built-in thermal protection and current limiting to ensure reliability.
8. Package: It is available in a compact MSOP-8 package, suitable for space-constrained applications.
These features make the LTC1878EMS8 ideal for portable devices and applications requiring efficient power conversion from various input sources.
1. Efficiency: It offers high efficiency, due in part to its low quiescent current of approximately 10µA, making it suitable for battery-operated applications.
2. Input Voltage Range: It supports a wide input voltage range typically from 2.5V to 10V, accommodating various power sources.
3. Output: The device can deliver up to 600mA of continuous output current, with a fixed output voltage option or an adjustable output.
4. Switching Frequency: The converter operates at a fixed high frequency of 550kHz, which allows for smaller external components and a compact design.
5. Low Dropout Operation: It features a low dropout operation, extending battery life.
6. Burst Mode Operation: The LTC1878 uses Burst Mode operation to maintain high efficiency at low loads.
7. Thermal Protection: It includes built-in thermal protection and current limiting to ensure reliability.
8. Package: It is available in a compact MSOP-8 package, suitable for space-constrained applications.
These features make the LTC1878EMS8 ideal for portable devices and applications requiring efficient power conversion from various input sources.
Package
The LTC1878EMS8 is an integrated circuit typically housed in an 8-lead MSOP (Mini Small Outline Package). This package is compact, suitable for space-constrained applications, and designed for surface mounting on printed circuit boards (PCBs).
Pinout
The LTC1878EMS8 is a step-down (buck) DC/DC converter from Analog Devices, formerly Linear Technology. It comes in an 8-lead MSOP package. Here is a concise explanation of its pin count and function:
- Pin 1 (RUN/SS): Run Control and Soft-Start Input.
- Pin 2 (VIN): Input Supply Pin, typically connected to a DC voltage source.
- Pin 3 (SW): Switch Node Connection to Inductor.
- Pin 4 (GND): Ground Connection.
- Pin 5 (VFB): Feedback Pin, connected to an external resistor divider network from the output.
- Pin 6 (ISET): Current Limit Set Pin.
- Pin 7 (VOSENSE): Output Voltage Sense Pin.
- Pin 8 (SENSE): Positive Current Sense Input.
The LTC1878EMS8 is designed to provide high efficiency with a current mode operation and is suitable for applications such as portable electronic devices.
- Pin 1 (RUN/SS): Run Control and Soft-Start Input.
- Pin 2 (VIN): Input Supply Pin, typically connected to a DC voltage source.
- Pin 3 (SW): Switch Node Connection to Inductor.
- Pin 4 (GND): Ground Connection.
- Pin 5 (VFB): Feedback Pin, connected to an external resistor divider network from the output.
- Pin 6 (ISET): Current Limit Set Pin.
- Pin 7 (VOSENSE): Output Voltage Sense Pin.
- Pin 8 (SENSE): Positive Current Sense Input.
The LTC1878EMS8 is designed to provide high efficiency with a current mode operation and is suitable for applications such as portable electronic devices.
Manufacturer
The LTC1878EMS8 is manufactured by Analog Devices, Inc. This company is a global leader in the design and manufacturing of analog, mixed-signal, and digital signal processing integrated circuits. Analog Devices primarily serves industries such as communications, consumer electronics, industrial, automotive, and healthcare. They provide solutions that enable high-performance applications in these sectors, emphasizing precision, advanced technology, and efficient power management.
Application
The LTC1878EMS8 is a step-down switching regulator designed for efficient voltage conversion. Its application areas include portable electronic devices, battery-powered instruments, distributed power systems, and handheld devices, where low power consumption and compact design are crucial. It is well-suited for applications requiring efficient power management with minimal heat generation, such as mobile phones, PDAs, digital cameras, and other compact, battery-operated gadgets.
Equivalent
The LTC1878EMS8 is a step-down DC/DC converter. Equivalent products include:
1. Maxim Integrated: MAX17502
2. Texas Instruments: TPS62125
3. Microchip Technology: MCP16301
4. ON Semiconductor: NCP1117
5. STMicroelectronics: ST1S10
These alternatives may have different specifications, so it's important to compare their datasheets to ensure compatibility with your specific application.
1. Maxim Integrated: MAX17502
2. Texas Instruments: TPS62125
3. Microchip Technology: MCP16301
4. ON Semiconductor: NCP1117
5. STMicroelectronics: ST1S10
These alternatives may have different specifications, so it's important to compare their datasheets to ensure compatibility with your specific application.
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出荷料参照(DHL/FedEx):
DHL の: 配送費は25ドル〜45ドル(0.5kg)の範囲で、推定配送時間は2〜5営業日です。
フェデックス: 配送費は25ドル〜40ドル(0.5kg)の範囲で、推定配送時間は3〜7営業日。
UPS の: 配送費は25ドル〜45ドル(0.5kg)の範囲で、推定配送時間は3〜7営業日。
TNT社: 配送費は25ドル〜65ドル(0.5kg)の範囲で、推定配送時間は3〜7営業日。
EMS: 配送料金は30〜50ドル(0.5kg)の範囲で、推定配送時間は7〜15営業日です。
登録航空郵便: 配送費は2〜4ドル(0.1kg)で、推定配送時間は5〜20営業日です。
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