Overview
The ADP2118ACPZ-1.5-R7 is a low quiescent current, synchronous, step-down DC-to-DC regulator produced by Analog Devices Inc. This regulator is housed in a compact 4mm x 4mm LFCSP package, making it ideal for space-constrained applications. It utilizes a current mode, constant frequency pulse-width modulation (PWM) control scheme for excellent stability and transient response. The ADP2118 can also operate in pulse frequency modulation (PFM) mode under light loads to enhance efficiency.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 2.3 V to 5.5 V |
| Output Voltage Range | Adjustable from 0.6 V to VIN; Preset options: 1.0 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V |
| Output Current | Up to 3 A |
| Switching Frequency | 600 kHz to 1.2 MHz |
| Package Type | 16-lead LFCSP with exposed pad |
| Quiescent Current (Disabled) | < 3 µA |
| Protection Features | UVLO, OVP, OCP, Thermal Shutdown |
| Soft Start | Integrated soft start to limit inrush current |
Key Features
- Current mode, constant frequency PWM control architecture with PFM mode for light loads
- Synchronizable between 600 kHz and 1.2 MHz with selectable phase shift (0° or 180°)
- Integrated high-side switch (P-channel MOSFET) and low-side synchronous rectifier (N-channel MOSFET)
- Precision enable input and power good output
- Voltage tracking input and internal compensation
- Undervoltage lockout (UVLO), overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown (TSD)
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-1.5-R7? The input voltage range is from 2.3 V to 5.5 V.
- What are the available output voltage options for the ADP2118? The output voltage can be adjusted from 0.6 V to VIN, with preset options of 1.0 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, and 3.3 V.
- What is the maximum output current of the ADP2118? The maximum output current is up to 3 A.
- What are the switching frequencies supported by the ADP2118? The switching frequencies range from 600 kHz to 1.2 MHz.
- What type of package does the ADP2118 come in? The ADP2118 comes in a 16-lead LFCSP package with an exposed pad.
- What is the quiescent current when the ADP2118 is disabled? The quiescent current is less than 3 µA when disabled.
- Does the ADP2118 have built-in protection features? Yes, it includes UVLO, OVP, OCP, and thermal shutdown.
- How does the ADP2118 manage inrush current at startup? It has an integrated soft start feature to limit inrush current.
- Can the ADP2118 operate in PFM mode? Yes, it can operate in PFM mode under light loads to improve efficiency.
- What design tools support the ADP2118? The ADP2118 is supported by the ADIsimPower design tool.
