Overview
The ADP2118ACPZ-R2, produced by Analog Devices Inc., is a low quiescent current, synchronous, step-down DC-to-DC regulator. It is designed in a compact 16-lead, 4 mm × 4 mm LFCSP package, making it ideal for space-constrained applications. The regulator uses a current mode, constant frequency pulse-width modulation (PWM) control scheme, ensuring excellent stability and transient response. It also features a pulse frequency modulation (PFM) mode for improved efficiency 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 VIN; preset options: 1.2 V, 2.5 V, 1.8 V, 1.5 V, 1.0 V, 3.3 V |
| Output Current | Up to 3 A |
| Switching Frequency | 600 kHz to 1.4 MHz |
| Package Type | 16-lead LFCSP (Exposed Pad) |
| Protection Features | Undervoltage Lockout (UVLO), Overvoltage Protection (OVP), Overcurrent Protection (OCP), Thermal Shutdown (TSD) |
| Operating Mode | PWM and PFM modes |
| Soft Start | Integrated soft start to limit inrush current |
| Power Good Output | Available |
Key Features
- High efficiency due to integrated high-side switch and low-side synchronous rectifier
- Current mode, constant frequency PWM control scheme for stability and transient response
- Pulse Frequency Modulation (PFM) mode for improved light load efficiency
- Minimal external parts required
- Integrated soft start to limit inrush current at startup
- Protection features: UVLO, OVP, OCP, and thermal shutdown
- Power good output and voltage tracking input
- Synchronizable between 600 kHz and 1.4 MHz with selectable phase shift (0° or 180°)
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-R2?
The input voltage range is from 2.3 V to 5.5 V. - What are the available output voltage options for the ADP2118ACPZ-R2?
The output voltage is adjustable from 0.6 V to VIN, with preset options of 1.2 V, 2.5 V, 1.8 V, 1.5 V, 1.0 V, and 3.3 V. - What is the maximum output current of the ADP2118ACPZ-R2?
The maximum output current is up to 3 A. - What are the switching frequency options for the ADP2118ACPZ-R2?
The switching frequency can be synchronized between 600 kHz and 1.4 MHz. - What protection features does the ADP2118ACPZ-R2 have?
The regulator includes undervoltage lockout (UVLO), overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown (TSD). - Does the ADP2118ACPZ-R2 support PFM mode?
Yes, it supports PFM mode for improved efficiency under light loads. - What is the package type of the ADP2118ACPZ-R2?
The package type is 16-lead LFCSP (Exposed Pad). - Does the ADP2118ACPZ-R2 have an integrated soft start feature?
Yes, it has an integrated soft start to limit inrush current at startup. - Is the ADP2118ACPZ-R2 RoHS compliant?
Yes, it is RoHS compliant. - What are some typical applications of the ADP2118ACPZ-R2?
Typical applications include point of load conversion, communications and networking equipment, industrial and instrumentation, consumer electronics, and medical appliances.
