Overview
The ADP2120ACPZ-2.5-R7, produced by Analog Devices Inc., is a low quiescent current, synchronous, step-down DC-to-DC regulator. This device is housed in a compact 3 mm × 3 mm LFCSP_WD package, making it ideal for space-constrained designs. The ADP2120 series uses a current mode, constant frequency pulse-width modulation (PWM) control scheme, ensuring excellent stability and transient response. Under light load conditions, it can operate in pulse frequency modulation (PFM) mode to reduce power consumption.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 2.3 V to 5.5 V |
| Output Voltage | Fixed: 2.5 V (for this specific model) |
| Output Current | Up to 1.25 A |
| Switching Frequency | 1.2 MHz (fixed), synchronizable between 1 MHz and 2 MHz |
| Package Type | 10-lead LFCSP_WD (3 mm × 3 mm) |
| Operating Temperature | -40°C to 125°C (TJ) |
| High-Side On Resistance | 145 mΩ to 190 mΩ at VIN = 3.3 V, ISW = 200 mA |
| Low-Side On Resistance | 70 mΩ to 100 mΩ at VIN = 3.3 V, ISW = 200 mA |
| Peak Current Limit | 1.6 A to 2.4 A (high-side switch at VIN = 3.3 V) |
| Minimum On Time | 100 ns |
| Power-Good Range | FB rising threshold: 105% to 115%, FB falling threshold: 85% to 95% |
Key Features
- High-efficiency synchronous buck converter with integrated power switches and synchronous rectifiers.
- Adjustable output voltage (though the ADP2120ACPZ-2.5-R7 is fixed at 2.5 V) from 0.6 V to 5.5 V.
- Current mode architecture with precision threshold enable input and power-good flag.
- Voltage tracking and integrated soft start.
- Internal compensation and startup with precharged output.
- Protection features include undervoltage lockout (UVLO), overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown.
- Selectable PWM or PFM mode operation for power efficiency.
- Supported by ADIsimPower™ design tool.
Applications
- Point of load conversion.
- Communications and networking equipment.
- Industrial and instrumentation applications.
- Consumer electronics.
- Medical applications.
Q & A
- What is the input voltage range of the ADP2120ACPZ-2.5-R7?
The input voltage range is from 2.3 V to 5.5 V.
- What is the fixed output voltage of the ADP2120ACPZ-2.5-R7?
The fixed output voltage is 2.5 V.
- What is the maximum output current of the ADP2120ACPZ-2.5-R7?
The maximum output current is up to 1.25 A.
- What is the switching frequency of the ADP2120ACPZ-2.5-R7?
The switching frequency is 1.2 MHz, and it can be synchronized between 1 MHz and 2 MHz.
- What package type is used for the ADP2120ACPZ-2.5-R7?
The device is housed in a 10-lead LFCSP_WD package (3 mm × 3 mm).
- What are the key protection features of the ADP2120ACPZ-2.5-R7?
The key protection features include undervoltage lockout (UVLO), overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown.
- Can the ADP2120ACPZ-2.5-R7 operate in PFM mode?
- What is the operating temperature range of the ADP2120ACPZ-2.5-R7?
The operating temperature range is -40°C to 125°C (TJ).
- Is the ADP2120ACPZ-2.5-R7 supported by any design tools?
- What are some typical applications of the ADP2120ACPZ-2.5-R7?
