Overview
The ADP2109ACBZ-1.8-R7 is a high-efficiency, low quiescent current step-down DC-to-DC converter manufactured by Analog Devices Inc. This device is part of the ADP2109 series and is designed to operate with input voltages ranging from 2.3V to 5.5V, making it suitable for various power sources including single lithium or lithium polymer cells, multiple alkaline or NiMH cells, PCMCIA, and USB. The converter features a fixed output voltage of 1.8V and a maximum load current of 600mA. It is packaged in an ultra-small 5-ball WLCSP, which minimizes the external component count and enhances efficiency.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.3V to 5.5V | V |
| Output Voltage | 1.8V (Fixed) | V |
| Maximum Load Current | 600mA | mA |
| Switching Frequency | 3MHz | MHz |
| Quiescent Current | 18μA (Typical) | μA |
| Topology | Buck | |
| Synchronous Rectifier | Yes | |
| Operating Temperature Range | -40°C to +85°C | °C |
| Package Type | 5-ball WLCSP | |
| Thermal Shutdown Threshold | 150°C | °C |
Key Features
- High efficiency with peak efficiency of 95%
- Fixed frequency operation at 3MHz
- Low quiescent current of 18μA (typical)
- Internal synchronous rectifier and internal compensation
- Internal soft start and current overload protection
- Thermal shutdown protection with a threshold of 150°C
- Power save mode to reduce switching frequency under light load conditions
- Automatic discharge of the output capacitor via an internal discharge switch
- 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 ADP2109ACBZ-1.8-R7?
The input voltage range is from 2.3V to 5.5V.
- What is the fixed output voltage of the ADP2109ACBZ-1.8-R7?
The fixed output voltage is 1.8V.
- What is the maximum load current of the ADP2109ACBZ-1.8-R7?
The maximum load current is 600mA.
- What is the switching frequency of the ADP2109ACBZ-1.8-R7?
The switching frequency is 3MHz.
- Does the ADP2109ACBZ-1.8-R7 have an internal synchronous rectifier?
Yes, it does.
- What is the operating temperature range of the ADP2109ACBZ-1.8-R7?
The operating temperature range is from -40°C to +85°C.
- What type of package does the ADP2109ACBZ-1.8-R7 come in?
The device is packaged in a 5-ball WLCSP.
- Does the ADP2109ACBZ-1.8-R7 have thermal shutdown protection?
Yes, it has thermal shutdown protection with a threshold of 150°C.
- What is the purpose of the power save mode in the ADP2109ACBZ-1.8-R7?
The power save mode reduces the switching frequency under light load conditions to conserve energy.
- Is the ADP2109ACBZ-1.8-R7 supported by any design tools?
Yes, it is supported by the ADIsimPower™ design tool.
