Overview
The ADP2371ACPZ-3.3-R7 is a high-efficiency, low quiescent current, 800 mA buck (step-down) DC-to-DC converter produced by Analog Devices Inc. This device is designed to operate in small 8-lead, 0.75 mm × 3 mm × 3 mm LFCSP (QFN) packages, making it ideal for space-constrained applications. The ADP2371 features a proprietary high-speed current mode, constant frequency PWM control scheme, which ensures excellent stability and transient response. It also includes an internal power switch and a synchronous rectifier, eliminating the need for an external rectifier and minimizing the external part count for high efficiency.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 3.2 V to 15 V | V |
| Output Voltage | 3.3 V (adjustable options available) | V |
| Output Current | 800 mA | mA |
| Operating Frequency | 600 kHz to 1.2 MHz (synchronizable) | kHz/MHz |
| Operating Temperature Range | -40°C to +125°C | °C |
| Shutdown Current | < 1.2 µA | µA |
| Package Type | 8-lead LFCSP (QFN) |
Key Features
- High efficiency synchronous rectifier architecture
- Internal power switch and synchronous rectifier for minimal external part count
- Power saving variable frequency mode to reduce switching frequency under light load conditions
- Synchronizable to an external clock (600 kHz to 1.2 MHz)
- Quick output discharge (QOD) function in ADP2371
- Internal soft start and internal compensation for ease of use
- Undervoltage lockout and soft start to prevent deep battery discharge and input overcurrent at startup
- Short-circuit protection and thermal overload protection circuits
- Power-good output to indicate when the output voltage is below 92% of its nominal value
Applications
- Portable and battery-powered equipment
- Automatic meter readers (WSN)
- Point of sales and transaction processing instruments
- Medical instruments
- Medium format display tablets and pads
Q & A
- What is the input voltage range of the ADP2371ACPZ-3.3-R7?
The input voltage range is from 3.2 V to 15 V.
- What is the maximum output current of the ADP2371ACPZ-3.3-R7?
The maximum output current is 800 mA.
- What are the operating frequencies of the ADP2371ACPZ-3.3-R7?
The device can operate at frequencies between 600 kHz and 1.2 MHz and can be synchronized to an external clock.
- What is the shutdown current of the ADP2371ACPZ-3.3-R7?
The shutdown current is less than 1.2 µA.
- What package type is the ADP2371ACPZ-3.3-R7 available in?
The device is available in an 8-lead LFCSP (QFN) package.
- Does the ADP2371ACPZ-3.3-R7 have a quick output discharge function?
Yes, the ADP2371 includes a quick output discharge (QOD) function.
- What protection features does the ADP2371ACPZ-3.3-R7 have?
The device includes undervoltage lockout, soft start, short-circuit protection, and thermal overload protection.
- Can the ADP2371ACPZ-3.3-R7 be synchronized to an external clock?
Yes, the device can be synchronized to an external clock between 600 kHz and 1.2 MHz.
- What is the power-good output feature of the ADP2371ACPZ-3.3-R7?
The power-good output indicates when the output voltage is below 92% of its nominal value.
- What are some typical applications of the ADP2371ACPZ-3.3-R7?
Typical applications include portable and battery-powered equipment, automatic meter readers, point of sales instruments, medical instruments, and medium format display tablets and pads.
