Overview
The ADP2503ACPZ-4.5-R7 is a high-efficiency, synchronous average current-mode switching buck-boost regulator produced by Analog Devices Inc. This device is designed to maintain a fixed output voltage from a wide range of input voltages, making it versatile for various power management applications. The ADP2503 series is known for its low quiescent current and ability to operate in both step-up and step-down configurations, enhancing its suitability for battery-powered devices and systems requiring efficient power conversion.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range | 2.3 | 5.5 | V | |
| Undervoltage Lockout Threshold (VIN rising) | 2.15 | 2.20 | 2.25 | V |
| Undervoltage Lockout Threshold (VIN falling) | 2.10 | 2.14 | 2.20 | V |
| Output Voltage Range | 2.8 | 5.5 | V | |
| Feedback Voltage (ADP2503, adjustable output) | 490 | 500 | 510 | mV |
| Output Voltage Initial Accuracy (ADP2503, fixed output) | -2% | +2% | % | |
| Load and Line Regulation (VIN = 2.3 V to 3.6 V, ILOAD = 0 mA to 500 mA) | 0.5% | % | ||
| Quiescent Current (VIN = 3.6 V, IOUT = 0 mA, device not switching) | 38 | 50 | µA | |
| Shutdown Current | 0.2 | 1 | µA | |
| N-Channel Switches On-Resistance (VIN = 3.6 V) | 150 | mΩ | ||
| P-Channel Switches On-Resistance (VIN = VOUT = 3.6 V) | 150 | mΩ | ||
| Switch Current Limit (ADP2503) | 1.0 | 1.4 | A | |
| Oscillator Frequency | 2.1 | 2.5 | 2.9 | MHz |
| Thermal Shutdown Threshold | 150 | °C |
Key Features
- High Efficiency: The ADP2503ACPZ-4.5-R7 offers high efficiency in both buck and boost modes, making it suitable for power-sensitive applications.
- Low Quiescent Current: With a quiescent current as low as 38 µA, this regulator is ideal for battery-powered devices where power conservation is critical.
- Wide Input Voltage Range: The device can operate with input voltages ranging from 2.3 V to 5.5 V, providing flexibility in various power supply scenarios.
- Adjustable and Fixed Output Voltages: The ADP2503 series includes options for both adjustable and fixed output voltages, catering to different application needs.
- Thermal Shutdown Protection: The regulator features thermal shutdown protection to prevent overheating, ensuring reliable operation.
- Small Package Size: The 10-Lead LFCSP package is compact, making it suitable for space-constrained designs.
Applications
- Battery-Powered Devices: Ideal for devices powered by single-cell or multi-cell batteries due to its wide input voltage range and low quiescent current.
- Portable Electronics: Suitable for portable electronics such as smartphones, tablets, and handheld devices where power efficiency is crucial.
- Industrial Control Systems: Can be used in industrial control systems that require reliable and efficient power conversion.
- Medical Devices: Applicable in medical devices that need high efficiency and low noise power supplies.
- Automotive Systems: Can be used in automotive systems where robust and efficient power management is necessary.
Q & A
- What is the input voltage range of the ADP2503ACPZ-4.5-R7?
The input voltage range is from 2.3 V to 5.5 V.
- What is the output voltage range of the ADP2503ACPZ-4.5-R7?
The output voltage range is from 2.8 V to 5.5 V.
- What is the quiescent current of the ADP2503ACPZ-4.5-R7?
The quiescent current is 38 µA to 50 µA when VIN = 3.6 V and the device is not switching.
- What is the switch current limit for the ADP2503ACPZ-4.5-R7?
The switch current limit is 1.0 A to 1.4 A.
- What is the oscillator frequency of the ADP2503ACPZ-4.5-R7?
The oscillator frequency is 2.1 MHz to 2.9 MHz.
- Does the ADP2503ACPZ-4.5-R7 have thermal shutdown protection?
Yes, it has thermal shutdown protection with a threshold of 150°C.
- What is the package type of the ADP2503ACPZ-4.5-R7?
The package type is a 10-Lead LFCSP (Lead Frame Chip Scale Package).
- Is the ADP2503ACPZ-4.5-R7 RoHS compliant?
Yes, the ADP2503ACPZ-4.5-R7 is RoHS compliant.
- What are some typical applications for the ADP2503ACPZ-4.5-R7?
Typical applications include battery-powered devices, portable electronics, industrial control systems, medical devices, and automotive systems.
- Are there evaluation boards available for the ADP2503ACPZ-4.5-R7?
Yes, evaluation boards such as the ADP2503-EVALZ are available for testing and development.
