Overview
The ADP2370ACPZ-3.3-R7 is a high-efficiency, low quiescent current, 800 mA buck (step-down) DC-DC converter produced by Analog Devices Inc. This component is part of the ADP2370/ADP2371 family, which is designed for use in portable and battery-powered equipment. The ADP2370ACPZ-3.3-R7 operates in a small 8-lead, 0.75 mm × 3 mm × 3 mm LFCSP (QFN) package, making it ideal for space-constrained applications. It employs a proprietary high-speed current mode, constant frequency PWM control scheme, ensuring excellent stability and transient response. The device also features 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 Voltage | 3.3 V (fixed) | V |
| Output Current | 800 mA | A |
| Switching Frequency | 600 kHz or 1.2 MHz | Hz |
| Feedback Voltage Accuracy | ±1% (initial set point) | % |
| 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) | % |
| Package Type | 8-lead LFCSP (QFN) | - |
| Package Dimensions | 0.75 mm × 3 mm × 3 mm | mm |
Key Features
- High efficiency synchronous rectifier architecture
- Low quiescent current and shutdown current (<1.2 µA)
- 100% duty cycle capability
- Quick output discharge (QOD) option (ADP2371)
- Synchronizable to an external clock (600 kHz to 1.2 MHz)
- Power saving variable frequency mode under light load conditions
- Integrated switched resistor (ADP2371)
- Supported by ADIsimPower design tool
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-3.3-R7?
The input voltage range is from 3.2 V to 15 V.
- What is the fixed output voltage of the ADP2370ACPZ-3.3-R7?
The fixed output voltage is 3.3 V.
- What is the maximum output current of the ADP2370ACPZ-3.3-R7?
The maximum output current is 800 mA.
- What are the available switching frequencies for the ADP2370ACPZ-3.3-R7?
The available switching frequencies are 600 kHz and 1.2 MHz.
- Does the ADP2370ACPZ-3.3-R7 support synchronization with 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 efficiency of the ADP2370ACPZ-3.3-R7 under typical conditions?
The efficiency can be up to 92% under typical conditions (IOUT = 250 mA, VIN = 7.2 V, VOUT = 3.3 V).
- What package type and dimensions does the ADP2370ACPZ-3.3-R7 come in?
The package type is an 8-lead LFCSP (QFN) with dimensions of 0.75 mm × 3 mm × 3 mm.
- Does the ADP2370ACPZ-3.3-R7 have a quick output discharge (QOD) option?
No, the QOD option is available in the ADP2371, not the ADP2370.
- What design tool supports the ADP2370ACPZ-3.3-R7?
The ADP2370ACPZ-3.3-R7 is supported by the ADIsimPower design tool.
- What are some typical applications of the ADP2370ACPZ-3.3-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.
