LT1085CT-5
LDO Voltage Regulators LT1085-Fixed
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製造商零件號 # : LT1085CT-5
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包裝/封裝: TO220-3
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製造商: Analog Devices
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產品分類 : Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
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LT1085CT-5 數據表
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詳細說明
The LT1083 series of positive adjustable regulators are designed to provide 3A, 5A and 7.5A with higher efficiency than currently available devices. All internal circuitry is designed to operate down to 1V input to output differential and the dropout voltage is fully specified as a function of load current. Dropout is guaranteed at a maximum of 1.5V at maximum output current, decreasing at lower load currents. On-chip trimming adjusts the output voltage to 1%. Current limit is also trimmed, minimizing the stress on both the regulator and power source circuitry under overload conditions. Features■ Three-Terminal 3.3V, 3.6V, 5V and 12V■ Output Current of 3A, 5A or 7.5A■ Operates Down to 1V Dropout■ Guaranteed Dropout Voltage at Multiple Current Levels■ Line Regulation: 0.015%■ Load Regulation: 0.1%■ 100% Thermal Limit Functional Test■ Adjustable Versions Available Applications■ High Efficiency Linear Regulators■ Post Regulators for Switching Supplies■ Constant Current Regulators■ Battery Chargers
主要特徵
- Excellent for battery-powered devices and portable electronics
- Precise control over output voltage and current
- Fault-tolerant design ensures reliable operation
應用
- Voltage regulation
- Low dropout
- For battery chargers
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。
Product Category ! | LDO Voltage Regulators | RoHS | No -RoHS Version Available |
Package / Case | TO-220-3 | Output Voltage | 5 V |
Output Current ! | 3 A | Number of Outputs | 1 Output |
Polarity | Positive | Quiescent Current ! | 5 mA |
Input Voltage, Min | 4.3 V | Input Voltage, Max | 25 V |
PSRR / Ripple Rejection - Typ | 72 dB | Output Type | Fixed |
Minimum Operating Temperature | 0 C | Maximum Operating Temperature ! | + 150 C |
Dropout Voltage ! | 1.3 V | Series | LT1085 |
Brand | Analog Devices | Dropout Voltage - Max | 1.5 V |
Height | 4.57 mm | Line Regulation ! | 0.015 % |
Load Regulation ! | 0.1 % | Operating Supply Current | 5 mA |
Product | Linear Regulators | Product Type ! | LDO Voltage Regulators |
Subcategory | PMIC - Power Management ICs | Type | Positive Fixed Regulator |
Specification Comparison
數據表 PDF
數據表記錄了器件的特性、絕對最大額定值、應用等,這對於作為器件特定應用的整體指南大有裨益。
常見問題解答
What is LT1085CT-5?
The LT1085CT-5 is a low dropout voltage linear regulator designed by Analog Devices. It is capable of providing up to 3A of output current with a dropout voltage of only 1.5V at full load, making it ideal for applications requiring a stable and low-noise power supply.
How Does LT1085CT-5 Work?
The LT1085CT-5 works by regulating the input voltage to a stable output voltage with low dropout. It utilizes a precision reference and error amplifier to adjust the regulation, ensuring a constant output voltage even with varying input voltage and load conditions. The regulator can be configured for various output voltages either through fixed or adjustable options.
How Many Pins does LT1085CT-5 have and What are the Functions of the Pinout Configuration?
The LT1085CT-5 is housed in a 3-lead TO-220 package. The pinout configuration includes:
- INPUT: Input voltage pin.
- OUTPUT: Regulated output voltage pin.
- ADJUST: Pin for adjusting the output voltage (for adjustable versions).
What are the Pros and Cons of LT1085CT-5?
Pros:
- High Output Current: Capable of providing up to 3A of output current.
- Low Dropout Voltage: Maintains a stable output even with low input voltage.
- Low Noise: Provides a clean and stable output voltage, suitable for noise-sensitive applications.
- Thermal Shutdown Protection: Includes thermal shutdown protection to prevent overheating.
- Wide Operating Temperature Range: Suitable for operation in various environmental conditions.
Cons:
- Heat Dissipation: May require proper heat sinking for high current applications.
- Size: The TO-220 package may be bulky for space-constrained designs.
- Cost: Higher output current linear regulators like the LT1085CT-5 may be more expensive compared to lower current alternatives.
Are There Any Equivalents/Alternatives to LT1085CT-5 for Recommendation?
- The LM1085 from Texas Instruments is a similar low dropout linear regulator.
- Alternatives to the LT1085CT-5 include the L4940 from STMicroelectronics and the MIC2940 from Microchip Technology.
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