Overview
The ADP2118ACPZ-2.5-R7 is a low quiescent current, synchronous, step-down DC-to-DC regulator produced by Analog Devices Inc. This regulator is designed in a compact 16-lead, 4 mm × 4 mm LFCSP package, making it ideal for space-constrained applications. It operates from input voltages ranging from 2.3 V to 5.5 V and can regulate the output voltage down to 0.6 V, with preset output voltage options including 2.5 V, as specified in this model. The ADP2118 uses a current mode, constant frequency pulse-width modulation (PWM) control scheme for excellent stability and transient response, and it can also operate in pulse frequency modulation (PFM) mode at light loads to save power.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 2.3 V to 5.5 V |
| Output Voltage Range | 0.6 V to VIN (preset options: 2.5 V, 3.3 V, 1.8 V, 1.5 V, 1.2 V, 1.0 V) |
| Output Current | Up to 3 A |
| Switching Frequency | 600 kHz to 1.4 MHz |
| Package Type | 16-lead, 4 mm × 4 mm LFCSP |
| Operating Modes | PWM and PFM |
| Protection Features | UVLO, OVP, OCP, Thermal Shutdown |
| Soft Start | Integrated soft start to limit inrush current |
| Power Good Output | Yes |
Key Features
- High efficiency due to integrated high-side switch (P-channel MOSFET) and low-side synchronous rectifier (N-channel MOSFET)
- Current mode, constant frequency PWM control architecture with PFM mode at light loads
- Selectable synchronize phase shift: 0° or 180°
- Precision enable input and power good output
- Voltage tracking input and internal compensation
- Integrated soft start to limit inrush current at startup
- Protection features include UVLO, OVP, OCP, and thermal shutdown
Applications
- Point of load conversion
- Communications and networking equipment
- Industrial and instrumentation
- Consumer electronics
- Medical appliances
Q & A
- What is the input voltage range of the ADP2118ACPZ-2.5-R7? The input voltage range is from 2.3 V to 5.5 V.
- What are the preset output voltage options for this regulator? The preset output voltage options include 2.5 V, 3.3 V, 1.8 V, 1.5 V, 1.2 V, and 1.0 V.
- What are the operating modes of the ADP2118ACPZ-2.5-R7? The regulator operates in both PWM and PFM modes.
- What is the maximum output current of the ADP2118ACPZ-2.5-R7? The maximum output current is up to 3 A.
- What protection features are integrated into the ADP2118ACPZ-2.5-R7? The regulator includes UVLO, OVP, OCP, and thermal shutdown protection features.
- Does the ADP2118ACPZ-2.5-R7 have a soft start feature? Yes, it has an integrated soft start to limit inrush current at startup.
- What is the package type of the ADP2118ACPZ-2.5-R7? The regulator is packaged in a 16-lead, 4 mm × 4 mm LFCSP package.
- What are some typical applications of the ADP2118ACPZ-2.5-R7? Typical applications include point of load conversion, communications and networking equipment, industrial and instrumentation, consumer electronics, and medical appliances.
- Can the switching frequency of the ADP2118ACPZ-2.5-R7 be synchronized? Yes, the switching frequency can be synchronized between 600 kHz and 1.4 MHz with a selectable phase shift of 0° or 180°.
- Is the ADP2118ACPZ-2.5-R7 supported by any design tools? Yes, it is supported by the ADIsimPower design tool.
