Overview
The ADP2118ACPZ-R7 is a low quiescent current, synchronous step-down DC-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 using a fixed frequency, peak current-mode PWM control architecture, ensuring excellent stability and transient response. The ADP2118 can be configured to operate in either PWM or PFM mode, with the latter reducing switching frequency to save power under light loads.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 2.3 V to 5.5 V |
| Output Voltage Range | Adjustable from 0.6 V to input voltage (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 1.4 MHz |
| Package Type | 16-lead LFCSP (4 mm × 4 mm) |
| Operating Modes | PWM and PFM modes |
| Protection Features | Undervoltage lockout (UVLO), overvoltage protection (OVP), overcurrent protection (OCP), thermal shutdown (TSD) |
| RoHS Compliance | Yes |
Key Features
- High efficiency due to integrated high-side switch and low-side synchronous rectifier
- Minimal external components required
- Integrated soft start to limit inrush current at startup
- Power good output and voltage tracking input
- Synchronizable between 600 kHz and 1.4 MHz with selectable phase shift (0° or 180°)
- Internal compensation and precision enable input
- Low quiescent current (less than 3 µA when disabled)
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-R7?
The input voltage range is from 2.3 V to 5.5 V.
- What are the available output voltage options for the ADP2118ACPZ-R7?
The output voltage is adjustable from 0.6 V to the input voltage, 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 ADP2118ACPZ-R7?
The maximum output current is up to 3 A.
- What are the switching frequency options for the ADP2118ACPZ-R7?
The switching frequency can be synchronized between 600 kHz and 1.4 MHz.
- What package type is the ADP2118ACPZ-R7 available in?
The ADP2118ACPZ-R7 is available in a 16-lead LFCSP package (4 mm × 4 mm).
- Does the ADP2118ACPZ-R7 support PWM and PFM modes?
Yes, it supports both PWM and PFM modes.
- What protection features does the ADP2118ACPZ-R7 have?
The ADP2118ACPZ-R7 includes undervoltage lockout (UVLO), overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown (TSD).
- Is the ADP2118ACPZ-R7 RoHS compliant?
Yes, the ADP2118ACPZ-R7 is RoHS compliant.
- What is the quiescent current when the ADP2118ACPZ-R7 is disabled?
The quiescent current is less than 3 µA when the device is disabled.
- What are some typical applications of the ADP2118ACPZ-R7?
Typical applications include point of load conversion, communications and networking equipment, industrial and instrumentation, consumer electronics, and medical appliances.
