CDLL257 Overview
The CDLL257 is a precision dual low-dropout (LDO) voltage regulator designed for industrial and embedded system applications requiring stable power supply solutions. It offers two independent output channels with low noise and high power supply rejection ratio (PSRR), making it ideal for sensitive analog and digital circuits. The device supports a wide input voltage range and delivers accurate output voltages with minimal dropout voltage, ensuring efficient operation even under varying load conditions. Its compact design and robust electrical characteristics provide engineers with a reliable power management solution for complex electronic systems. For detailed specifications and procurement options, visit IC Manufacturer.
CDLL257 Technical Specifications
| Parameter | Value | Unit | Description |
|---|---|---|---|
| Input Voltage Range | 2.0 to 5.5 | V | Acceptable input supply voltage |
| Output Voltage | 1.2 to 3.3 (adjustable) | V | Programmable output voltage range |
| Output Current | 250 | mA | Maximum continuous current per channel |
| Dropout Voltage | 350 | mV | Maximum voltage difference for regulation at full load |
| Quiescent Current | 40 | ??A | Typical current consumption in no-load condition |
| PSRR (Power Supply Rejection Ratio) | 75 | dB | Measured at 1kHz for noise suppression |
| Operating Temperature Range | -40 to +125 | ??C | Industrial temperature range for reliable operation |
| Package Type | SOIC-8 | ?? | Standard small outline integrated circuit package |
CDLL257 Key Features
- Dual independent regulators: Enables simultaneous supply to two separate circuits, reducing board space and simplifying power architecture.
- Low dropout voltage: Allows efficient regulation even when input voltage is close to output voltage, which is crucial for battery-powered and low-voltage systems.
- High PSRR: Minimizes output voltage ripple and noise, enhancing performance of sensitive analog and RF components.
- Low quiescent current: Supports energy-efficient designs by reducing power consumption during no-load or standby conditions.
- Wide operating temperature range: Ensures stable operation in harsh industrial environments.
- Adjustable output voltage: Provides flexibility to meet diverse application requirements without redesigning hardware.
- Compact SOIC-8 package: Facilitates easy PCB layout and high-density integration.
CDLL257 Advantages vs Typical Alternatives
The device offers superior power supply rejection and lower dropout voltage compared to typical LDO regulators, enhancing accuracy and stability in sensitive electronics. Its dual-channel design reduces component count and saves board space, while the low quiescent current improves overall system efficiency. Robust thermal and electrical characteristics ensure reliable operation across a broad temperature range, making it a preferred choice over standard single-output regulators or less efficient solutions.
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Typical Applications
- Industrial control systems requiring precise dual-voltage rails with minimal noise interference for sensor and microcontroller power.
- Battery-powered devices where low dropout and low quiescent current extend operating time and improve energy efficiency.
- Communication equipment needing clean voltage supplies for RF front ends and baseband processors.
- Embedded systems and portable instrumentation demanding compact dual-regulator modules for simplified power management.
CDLL257 Brand Info
This product is part of the CDLL series offered by IC Manufacturer, a trusted supplier of semiconductor components specializing in power management ICs. The CDLL257 exemplifies the brand??s commitment to delivering reliable, high-performance voltage regulation solutions tailored for industrial and embedded applications. Engineered with precision and durability, it aligns with industry standards to support designers in achieving optimized, efficient power architectures.
FAQ
What is the maximum output current supported by each channel of this regulator?
Each output channel of the device can deliver up to 250mA of continuous current, making it suitable for powering moderate-load circuits in industrial and embedded systems.
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How does the dropout voltage affect performance in low-voltage applications?
The dropout voltage, typically 350mV at full load, determines how close the input voltage can be to the output voltage while maintaining regulation. A low dropout voltage enables efficient operation in battery-powered or low-voltage environments by maximizing battery life and reducing heat dissipation.
Is the output voltage fixed or adjustable on this regulator?
The output voltage is adjustable within a range from 1.2V to 3.3V, allowing engineers to set precise voltage levels tailored to specific application requirements without needing additional external components.
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What package type is used, and how does it influence PCB design?
The device is available in a standard SOIC-8 package, which is a compact, industry-standard form factor. This package supports easy surface mounting and efficient PCB layout, facilitating high-density designs and reliable soldering processes.
Can this regulator operate reliably in harsh environmental conditions?
Yes, the device is rated for an extended industrial temperature range from -40??C to +125??C, ensuring stable performance in a variety of demanding environments such as factory automation, automotive electronics, and outdoor instrumentation.
