Overview
The ADP2139ACBZ-1.8-R7 is a high-efficiency, synchronous step-down DC-to-DC converter produced by Analog Devices Inc. This compact device is designed to operate within a wide input voltage range of 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, USB, and other standard power sources. The ADP2139ACBZ-1.8-R7 is specifically configured to provide a fixed output voltage of 1.8V with a maximum load current of 800mA. It features an internal synchronous rectifier, internal compensation, and soft start, along with current overload and thermal shutdown protections, ensuring reliable and efficient operation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Part Number | ADP2139ACBZ-1.8-R7 | |
| Manufacturer | Analog Devices Inc. | |
| Voltage - Input (Min/Max) | 2.3V / 5.5V | V |
| Voltage - Output (Fixed) | 1.8V | V |
| Topology | Buck | |
| Synchronous Rectifier | Yes | |
| Package | 6-UFBGA, WLCSP | |
| Output Type | Fixed | |
| Output Configuration | Positive | |
| Current - Output | 800mA | mA |
| Frequency - Switching | 3MHz | MHz |
| Operating Temperature | -40°C to 85°C | °C |
| Mounting Type | Surface Mount | |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Key Features
- High efficiency, low quiescent current synchronous step-down DC-to-DC converter
- Internal synchronous rectifier, internal compensation, and soft start
- Current overload and thermal shutdown protections
- Ultralow shutdown current: 0.2 μA (typical)
- Forced PWM and automatic PWM/PSM modes
- Internal discharge switch (specific to ADP2139)
- Supported by ADIsimPower™ design tool
- Undervoltage lockout to prevent deep battery discharge
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 ADP2139ACBZ-1.8-R7?
The input voltage range is 2.3V to 5.5V.
- What is the fixed output voltage of the ADP2139ACBZ-1.8-R7?
The fixed output voltage is 1.8V.
- What is the maximum load current of the ADP2139ACBZ-1.8-R7?
The maximum load current is 800mA.
- Does the ADP2139ACBZ-1.8-R7 have an internal synchronous rectifier?
Yes, it has an internal synchronous rectifier).
- What is the switching frequency of the ADP2139ACBZ-1.8-R7?
The switching frequency is 3MHz).
- What are the operating temperature ranges for the ADP2139ACBZ-1.8-R7?
The operating temperature range is -40°C to 85°C).
- Does the ADP2139ACBZ-1.8-R7 have thermal shutdown protection?
Yes, it has thermal shutdown protection with a threshold of 150°C).
- What is the shutdown current of the ADP2139ACBZ-1.8-R7?
The shutdown current is typically 0.2 μA).
- Is the ADP2139ACBZ-1.8-R7 supported by any design tools?
Yes, it is supported by ADIsimPower™ design tool).
- What are some common applications of the ADP2139ACBZ-1.8-R7?
Common applications include PDAs, wireless handsets, digital audio and portable media players, and digital cameras).
