LT1054CDW
Switching Voltage Regulators Bipolar Regulated V
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製造商零件號 # : LT1054CDW
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包裝/封裝: SOIC-16
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零件狀態 : Active
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製造商: Texas Instruments
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產品分類 : Voltage Regulators - DC DC Switching Regulators
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LT1054CDW 數據表
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目前的價格方案正在編制中。請聯絡我們的客戶服務團隊獲取最新的價格資訊。感謝您的理解和支援!
詳細說明
What sets the LT1054CDW apart is its unique ability to provide regulation, a feature not commonly found in switched-capacitor voltage converters. By incorporating an external resistive divider, users can achieve a regulated output that remains stable against fluctuations in input voltage and output current
主要特徵
- Pulse Width Modulation, 250kHz
- Thermal Shutdown Protection
- Operating Temperature Range, -40C to 125C
規格
以下是所選零件的基本參數,涉及零件的特性及其所屬類別。
Vin (min) (V) | 3.5 | Vin (max) (V) | 15 |
Vout (min) (V) | -1.25 | Vout (max) (V) | -15 |
Iout (max) (A) | 0.1 | Regulated outputs (#) | 1 |
Switching frequency (min) (kHz) | 1 | Switching frequency (max) (kHz) | 100 |
Iq (typ) (mA) | 2.5 | Features | Integrated LDO |
Operating temperature range (°C) | -40 to 85, 0 to 70 | Rating | Catalog |
Type | Charge pump |
常見問題解答
What is LT1054CDW?
The LT1054CDW is a monolithic, bipolar, switched-capacitor voltage converter designed by Linear Technology (now part of Analog Devices). It is used to generate a negative voltage from a positive input voltage, making it ideal for applications requiring a negative power supply, such as analog systems, audio amplifiers, and portable devices.
How Does LT1054CDW Work?
The LT1054CDW works by utilizing switched-capacitor techniques to generate a negative voltage output from a positive input voltage. It features high efficiency and low ripple, making it suitable for voltage conversion applications. The voltage converter can deliver a regulated output voltage, providing a stable negative power source for various circuitry.
How Many Pins does LT1054CDW have and What are the Functions of the Pinout Configuration?
The LT1054CDW is housed in a 14-lead SOIC (Small Outline Integrated Circuit) package. The pinout configuration includes:
- V+: Positive input voltage pin.
- V-: Negative output voltage pin.
- C1+, C1-: Flying capacitor pins for the first flying capacitor.
- C2+, C2-: Flying capacitor pins for the second flying capacitor.
- GND: Ground connection.
- SW: Switch pin.
- V-REG: Negative voltage regulator output pin.
- V-REG/2X: V-REG or 2× V-REG output pin.
- OSC: Oscillator frequency setting pin.
What are the Pros and Cons of LT1054CDW?
Pros:
- Efficient Voltage Conversion: Provides efficient negative voltage conversion from positive input voltage.
- Low Ripple: Delivers low output voltage ripple for noise-sensitive applications.
- Regulated Output: Offers a regulated negative output voltage for stable operation of circuitry.
- Compact Package: Housed in a 14-lead SOIC package for space-efficient designs.
- Wide Operating Voltage Range: Supports a wide input voltage range for flexibility in various applications.
Cons:
- External Components: May require external capacitors and resistors for proper operation.
- Thermal Considerations: May require thermal management for high power applications.
- Switching Noise: Switching-capacitor converters may introduce additional noise in sensitive circuits.
Are There Any Equivalents/Alternatives to LT1054CDW for Recommendation?
- The ICL7660 from Intersil is a similar switched-capacitor voltage converter with comparable functionality.
- Alternatives to the LT1054CDW include the MAX660 from Maxim Integrated and the NCP1252 from ON Semiconductor.
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