Overview
The ADP2370ACPZ-R7, produced by Analog Devices Inc., is a high-efficiency, low quiescent current, 800 mA buck (step-down) DC-DC converter. It is packaged in a small 8-lead, 3 mm x 3 mm LFCSP (QFN) package, making it ideal for space-constrained and portable applications. The converter operates from input voltages ranging from 3.2 V to 15 V, supporting multiple alkaline/NiMH, lithium cells, or other standard power sources. It features a proprietary high-speed current mode, constant frequency PWM control scheme, ensuring excellent stability and transient response. The device also includes a high-efficiency synchronous rectifier architecture, eliminating the need for an external rectifier.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 3.2 V to 15 V | V |
| Output Current | 800 mA | A |
| Output Voltage Options | 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.0 V, 3.3 V, 5 V, and adjustable | V |
| Feedback Voltage Accuracy | ±1% | % |
| Load Regulation | 0.125 %/A | %/A |
| Line Regulation | 0.01 %/V | %/V |
| Efficiency | Up to 92% (IOUT = 250 mA, VIN = 7.2 V, VOUT = 3.3 V) | % |
| Switching Frequency | 600 kHz to 1.2 MHz | kHz/MHz |
| Package Type | 8-Lead LFCSP (QFN) | - |
| Operating Temperature Range | −40°C to +125°C | °C |
Key Features
- High efficiency with up to 92% efficiency at typical operating conditions.
- Low quiescent current and shutdown current (<1.2 µA).
- Quick output discharge (QOD) option.
- Synchronizable to an external clock (600 kHz to 1.2 MHz).
- 100% duty cycle capability.
- Power saving variable frequency mode to reduce switching frequency under light load conditions.
- High-speed current mode, constant frequency PWM control scheme for excellent stability and transient response.
- High-efficiency synchronous rectifier architecture eliminating the need for an external rectifier.
- Precision enable and power good functions.
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 ADP2370ACPZ-R7?
The input voltage range is from 3.2 V to 15 V.
- What is the maximum output current of the ADP2370ACPZ-R7?
The maximum output current is 800 mA.
- What are the available output voltage options for the ADP2370ACPZ-R7?
The output voltage options include 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.0 V, 3.3 V, 5 V, and an adjustable option.
- What is the feedback voltage accuracy of the ADP2370ACPZ-R7?
The feedback voltage accuracy is ±1%.
- Can the ADP2370ACPZ-R7 be synchronized to an external clock?
Yes, it can be synchronized to an external clock in the range of 600 kHz to 1.2 MHz.
- What is the typical efficiency of the ADP2370ACPZ-R7?
The typical efficiency is up to 92% at IOUT = 250 mA, VIN = 7.2 V, and VOUT = 3.3 V.
- What is the package type of the ADP2370ACPZ-R7?
The package type is an 8-Lead LFCSP (QFN).
- What is the operating temperature range of the ADP2370ACPZ-R7?
The operating temperature range is −40°C to +125°C.
- Does the ADP2370ACPZ-R7 have a power saving mode?
Yes, it has a power saving variable frequency mode to reduce switching frequency under light load conditions.
- What are some typical applications of the ADP2370ACPZ-R7?
Typical applications include portable and battery-powered equipment, automatic meter readers, point of sales and transaction processing instruments, medical instruments, and medium format display tablets and pads.
