Overview
The ADP2108ACBZ-1.1-R7 is a high-efficiency, low quiescent current step-down DC-to-DC converter manufactured by Analog Devices Inc. This device is designed to provide a regulated output voltage from an input voltage range of 2.3 V to 5.5 V, making it suitable for a variety of portable and battery-powered applications. The ADP2108 operates with a fixed frequency of 3 MHz and features a current mode PWM control architecture for excellent stability and transient response. It is available in two different packages: 5-ball WLCSP and 5-lead TSOT.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 2.3 V to 5.5 V |
| Output Voltage | 1.1 V (for ADP2108ACBZ-1.1-R7) |
| Maximum Load Current | 600 mA |
| Fixed Frequency | 3 MHz |
| Typical Quiescent Current | 18 μA |
| Peak Efficiency | 95% |
| Shutdown Supply Current | 0.2 μA |
| Package Types | 5-ball WLCSP, 5-lead TSOT |
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, current overload protection, and thermal shutdown protection.
- Support for tiny multilayer inductors and capacitors.
- 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 ADP2108?
The input voltage range of the ADP2108 is 2.3 V to 5.5 V.
- What is the maximum load current of the ADP2108?
The maximum load current of the ADP2108 is 600 mA.
- What is the fixed frequency of operation for the ADP2108?
The ADP2108 operates at a fixed frequency of 3 MHz.
- What is the typical quiescent current of the ADP2108?
The typical quiescent current of the ADP2108 is 18 μA.
- What are the package types available for the ADP2108?
The ADP2108 is available in 5-ball WLCSP and 5-lead TSOT packages.
- Does the ADP2108 have internal protection features?
Yes, the ADP2108 includes internal soft start, current overload protection, and thermal shutdown protection.
- What is the peak efficiency of the ADP2108?
The peak efficiency of the ADP2108 is 95%.
- Is the ADP2108 supported by any design tools?
Yes, the ADP2108 is supported by the ADIsimPower™ design tool.
- What are some typical applications for the ADP2108?
Typical applications include PDAs, wireless handsets, digital audio players, and digital cameras.
- How does the ADP2108 manage power at light loads?
The ADP2108 transitions to a power save mode at light loads, where it operates in a hysteretic manner and can enter an idle mode to improve efficiency.
