Overview
The ADP2119ACPZ-1.0-R7 is a low quiescent current, synchronous step-down DC-to-DC regulator produced by Analog Devices Inc. This component is part of the ADP2119/ADP2120 family and is housed in a compact 3 mm × 3 mm LFCSP_WD package. It is designed to provide high efficiency and stability in various power management applications.
Key Specifications
| Parameter | Value |
|---|---|
| Continuous Output Current | 2 A (ADP2119), 1.25 A (ADP2120) |
| Input Voltage Range | 2.3 V to 5.5 V |
| Output Voltage Range | 0.6 V to VIN (adjustable), fixed options: 3.3 V, 2.5 V, 1.8 V, 1.5 V, 1.2 V, 1.0 V |
| Switching Frequency | 1.2 MHz fixed, synchronizable between 1 MHz and 2 MHz |
| Output Voltage Accuracy | ±1.5% |
| Integrated MOSFETs | 145 mΩ and 70 mΩ |
| Package Type | 10-lead, 3 mm × 3 mm LFCSP_WD |
| Operating Modes | PWM, PFM |
| Protection Features | UVLO, OVP, OCP, thermal shutdown |
Key Features
- Current mode architecture with constant frequency pulse-width modulation (PWM) and pulse frequency modulation (PFM) for light load conditions.
- High efficiency with integrated power switches and synchronous rectifiers.
- Minimal external parts required.
- Precision threshold enable input and power-good flag.
- Voltage tracking and integrated soft start.
- Internal compensation and startup with precharged output.
- Low quiescent current: less than 2 µA when disabled.
Applications
- Point of load conversion.
- Communications and networking equipment.
- Industrial and instrumentation.
- Consumer electronics.
- Medical applications.
Q & A
- What is the continuous output current of the ADP2119?
The continuous output current of the ADP2119 is 2 A, while the ADP2120 is 1.25 A. - What is the input voltage range for the ADP2119/ADP2120?
The input voltage range is from 2.3 V to 5.5 V. - What are the available output voltage options for the ADP2119/ADP2120?
The output voltage can be adjusted from 0.6 V to VIN, with fixed options available at 3.3 V, 2.5 V, 1.8 V, 1.5 V, 1.2 V, and 1.0 V. - What is the switching frequency of the ADP2119/ADP2120?
The switching frequency is 1.2 MHz fixed, but it can be synchronized between 1 MHz and 2 MHz. - What is the output voltage accuracy of the ADP2119/ADP2120?
The output voltage accuracy is ±1.5%. - What are the integrated MOSFET resistances in the ADP2119/ADP2120?
The integrated MOSFET resistances are 145 mΩ and 70 mΩ. - What package type is used for the ADP2119/ADP2120?
The package type is a 10-lead, 3 mm × 3 mm LFCSP_WD. - What operating modes are supported by the ADP2119/ADP2120?
The ADP2119/ADP2120 support PWM and PFM operating modes. - What protection features are included in the ADP2119/ADP2120?
The protection features include undervoltage lockout (UVLO), overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown. - How much current does the ADP2119/ADP2120 draw when disabled?
The ADP2119/ADP2120 draw less than 2 µA when disabled.
