Overview
The ADP2118ACPZ-3.3-R7, produced by Analog Devices Inc., is a low quiescent current, synchronous, step-down DC-to-DC regulator. This regulator is designed in a compact 16-lead, 4 mm × 4 mm LFCSP package, making it ideal for space-constrained applications. It utilizes a current mode, constant frequency pulse-width modulation (PWM) control scheme, ensuring excellent stability and transient response. The ADP2118 can also operate in pulse frequency modulation (PFM) mode under light loads to reduce switching frequency and save power.
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 |
| Maximum Output Current | 3 A |
| Switching Frequency | 600 kHz to 1.4 MHz |
| Package Type | 16-lead LFCSP (4 mm × 4 mm) |
| Operating Modes | PWM and PFM |
| Protection Features | UVLO, OVP, OCP, Thermal Shutdown |
| RoHS Compliance | 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 for light loads
- Adjustable output voltage from 0.6 V to input voltage (VIN) with preset options
- Synchronizable between 600 kHz and 1.4 MHz with selectable phase shift (0° or 180°)
- Precision enable input and power good output
- Voltage tracking input and integrated soft start to limit inrush current at startup
- Internal compensation and minimal external parts required
- Low quiescent current (< 3 µA when disabled)
- 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-3.3-R7?
The input voltage range is from 2.3 V to 5.5 V.
- What are the available preset output voltage options for the ADP2118?
The preset output voltage options include 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-3.3-R7?
The maximum output current is 3 A.
- What are the operating modes of the ADP2118?
The ADP2118 operates in both PWM and PFM modes.
- What protection features are integrated into the ADP2118?
The ADP2118 includes undervoltage lockout (UVLO), overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown (TSD).
- What is the package type and size of the ADP2118ACPZ-3.3-R7?
The package type is a 16-lead LFCSP with a size of 4 mm × 4 mm.
- Is the ADP2118 RoHS compliant?
Yes, the ADP2118 is RoHS compliant.
- What is the quiescent current when the ADP2118 is disabled?
The quiescent current is less than 3 µA when the device is disabled.
- Can the ADP2118 be synchronized with an external clock?
Yes, the ADP2118 can be synchronized between 600 kHz and 1.4 MHz with a selectable phase shift of 0° or 180°.
- What design tool supports the ADP2118?
The ADP2118 is supported by the ADIsimPower design tool.
