Overview
The ADP2108AUJZ-1.0-R7 is a high-efficiency, low-quiescent current step-down DC-to-DC converter manufactured by Analog Devices Inc. This device is designed to operate with an input voltage range of 2.3 V to 5.5 V and can regulate an output voltage down to 1.0 V. It features a compact design, requiring only three tiny external components, making it ideal for space-constrained applications. The ADP2108 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 | V |
| Maximum Load Current | 600 | mA |
| Switching Frequency | 3 | MHz |
| Typical Quiescent Current | 18 | μA |
| Peak Efficiency | 95% | % |
| Package Type | TSOT23-5, 5-ball WLCSP | |
| Operating Temperature Range | -40 to 125 | °C |
Key Features
- High efficiency with a peak efficiency of 95%
- 3 MHz fixed frequency operation
- Low quiescent current of 18 μA
- 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
- Shutdown supply current of 0.2 μA
- 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-1.0-R7?
The input voltage range is from 2.3 V to 5.5 V.
- What is the maximum load current of the ADP2108AUJZ-1.0-R7?
The maximum load current is 600 mA.
- What is the switching frequency of the ADP2108AUJZ-1.0-R7?
The switching frequency is 3 MHz.
- What is the typical quiescent current of the ADP2108AUJZ-1.0-R7?
The typical quiescent current is 18 μA.
- What are the package types available for the ADP2108AUJZ-1.0-R7?
The device is available in TSOT23-5 and 5-ball WLCSP packages.
- Does the ADP2108AUJZ-1.0-R7 have built-in protection features?
Yes, it includes current overload protection, thermal shutdown protection, and undervoltage lockout.
- What is the operating temperature range of the ADP2108AUJZ-1.0-R7?
The operating temperature range is from -40°C to 125°C.
- What design tool supports the ADP2108AUJZ-1.0-R7?
The device is supported by the ADIsimPower™ design tool.
- What are some typical applications of the ADP2108AUJZ-1.0-R7?
Typical applications include PDAs, wireless handsets, digital audio players, digital cameras, and GPS navigation units.
- How does the ADP2108AUJZ-1.0-R7 manage efficiency at light loads?
The device smoothly transitions to a power save mode at light loads, which reduces regulation power losses and improves conversion efficiency.
