Overview
The ADP2108AUJZ-2.5-R7 is a high-efficiency, low quiescent current step-down DC-to-DC converter manufactured by Analog Devices Inc. This compact converter is designed to provide a regulated output voltage from an input voltage range of 2.3 V to 5.5 V. It is available in two different packages, including the TSOT-23-5 package, making it suitable for space-constrained applications.
The ADP2108 features a fixed frequency of 3 MHz and a maximum load current of 600 mA, making it ideal for various portable and low-power devices. The converter uses a proprietary high-speed current mode, constant frequency PWM control scheme for excellent stability and transient response.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.3 to 5.5 | V |
| Output Voltage | 1.0 to 5.0 (adjustable) | V |
| Maximum Load Current | 600 | mA |
| Fixed Frequency | 3 | MHz |
| Typical Quiescent Current | 18 | μA |
| Peak Efficiency | 95% | % |
| Shutdown Supply Current | 0.2 | μA |
| Package Type | TSOT-23-5, WLCSP |
Key Features
- High efficiency with a peak efficiency of 95%
- Fixed frequency operation at 3 MHz
- Low quiescent current of 18 μA
- Maximum load current of 600 mA
- Current mode architecture for fast load and line transient response
- 100% duty cycle low dropout mode
- Internal synchronous rectifier and internal compensation
- Internal soft start and current overload protection
- Thermal shutdown protection
- Supported by ADIsimPower™ design tool
Applications
- PDAs and palmtop computers
- Wireless handsets
- Digital audio and portable media players
- Digital cameras and GPS navigation units
Q & A
- What is the input voltage range of the ADP2108AUJZ-2.5-R7?
The input voltage range is from 2.3 V to 5.5 V.
- What is the maximum load current of the ADP2108AUJZ-2.5-R7?
The maximum load current is 600 mA.
- What is the fixed frequency of operation for the ADP2108AUJZ-2.5-R7?
The fixed frequency of operation is 3 MHz.
- What is the typical quiescent current of the ADP2108AUJZ-2.5-R7?
The typical quiescent current is 18 μA.
- Does the ADP2108AUJZ-2.5-R7 have internal protection features?
- What packages are available for the ADP2108AUJZ-2.5-R7?
The converter is available in TSOT-23-5 and WLCSP packages.
- What design tool supports the ADP2108AUJZ-2.5-R7?
The ADP2108AUJZ-2.5-R7 is supported by the ADIsimPower™ design tool.
- What are some typical applications for the ADP2108AUJZ-2.5-R7?
Typical applications include PDAs, wireless handsets, digital audio players, digital cameras, and GPS navigation units.
- How does the ADP2108AUJZ-2.5-R7 manage efficiency at light loads?
The converter smoothly transitions to a power save mode at light loads, reducing regulation power losses and improving conversion efficiency.
- What is the shutdown supply current of the ADP2108AUJZ-2.5-R7?
The shutdown supply current is 0.2 μA.
