ADP2138ACBZ-2.8-R7

Overview

Category: Integrated Circuit (IC)
Use: Voltage Regulator
Characteristics: High efficiency, low dropout voltage, small package size
Package: SOT-23-5
Essence: Step-down DC-DC converter
Packaging/Quantity: Tape and Reel / 3000 units per reel

Specifications

• Input Voltage Range: 2.3V to 6.0V
• Output Voltage: 2.8V
• Output Current: Up to 600mA
• Dropout Voltage: 200mV at 600mA
• Quiescent Current: 45µA
• Efficiency: Up to 95%
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The ADP2138ACBZ-2.8-R7 has a total of five pins arranged as follows:

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| | --| VIN GND |-- Pin 1: Ground --| VOUT EN |-- Pin 2: Enable --| FB NC |-- Pin 3: Not Connected --| SW NC |-- Pin 4: Not Connected --| PG NC |-- Pin 5: Not Connected |___________| ```

Functional Features

• Step-down voltage regulation from input to output
• Low dropout voltage ensures efficient power conversion
• Enable pin for easy on/off control
• Power Good (PG) indicator for monitoring output status
• Overcurrent and thermal protection for enhanced safety

Advantages

• High efficiency results in minimal power loss
• Small package size allows for space-saving designs
• Wide input voltage range enables versatile applications
• Low quiescent current prolongs battery life
• Robust protection features ensure reliable operation

Disadvantages

• Limited output current may not be suitable for high-power applications
• Dropout voltage may affect performance in low input voltage scenarios

Working Principles

The ADP2138ACBZ-2.8-R7 is a step-down DC-DC converter that regulates the input voltage to a stable 2.8V output. It utilizes a switching regulator topology to achieve high efficiency and low dropout voltage. The enable pin allows for easy control of the device's power state, while the power good indicator provides feedback on the output status. The IC incorporates overcurrent and thermal protection mechanisms to safeguard against potential damage.

Detailed Application Field Plans

The ADP2138ACBZ-2.8-R7 is commonly used in various portable electronic devices, such as smartphones, tablets, and wearable devices. Its small package size and efficient power conversion make it ideal for space-constrained applications. The voltage regulator can be employed in battery-powered systems, where its low quiescent current helps extend battery life. Additionally, it finds utility in industrial automation, IoT devices, and automotive electronics.

Alternative Models

1. ADP2114ACPZ-2.8-R7: Similar specifications with adjustable output voltage.
2. ADP2140ACPZ-2.8-R7: Higher output current capability with fixed 2.8V output.
3. ADP2164ACPZ-2.8-R7: Dual-channel version with independent outputs.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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