Overview
The ADP2118ACPZ-1.8-R7 is a low quiescent current, synchronous, step-down dc-to-dc regulator produced by Analog Devices Inc. It is housed in a compact 4mm x 4mm LFCSP package, making it ideal for space-constrained applications. This 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 | 0.6 V to VIN (adjustable), 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
- Selectable PWM or PFM mode operation for improved efficiency under 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)
- High efficiency due to integrated power switch and synchronous rectifier
- Minimal external parts required
- Power good output and voltage tracking input
- Internal compensation and soft start
- 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-1.8-R7?
The input voltage range is from 2.3 V to 5.5 V.
- What are the available output voltage options for the ADP2118ACPZ-1.8-R7?
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 ADP2118ACPZ-1.8-R7?
The maximum output current is up to 3 A.
- What are the switching frequency options for the ADP2118ACPZ-1.8-R7?
The switching frequency can be synchronized between 600 kHz and 1.2 MHz.
- What package type is the ADP2118ACPZ-1.8-R7 available in?
The component is housed in a 16-lead LFCSP package with an exposed pad.
- What is the quiescent current when the ADP2118ACPZ-1.8-R7 is disabled?
The quiescent current is less than 3 µA when disabled.
- What protection features does the ADP2118ACPZ-1.8-R7 include?
The component includes undervoltage lockout (UVLO), overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown (TSD).
- Does the ADP2118ACPZ-1.8-R7 have an integrated soft start feature?
Yes, it includes an integrated soft start to limit inrush current at startup.
- In what applications is the ADP2118ACPZ-1.8-R7 commonly used?
It is commonly used in point of load conversion, communications and networking equipment, industrial and instrumentation, consumer electronics, and medical appliances.
- Can the ADP2118ACPZ-1.8-R7 operate in both PWM and PFM modes?
Yes, it can operate in both PWM and PFM modes, with PFM mode reducing switching frequency to save power under light loads.
