ETA2842S2G

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ETA2842S2G

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Specifications

Attribute Value
Manufacturer etasolution
Package / Case SOT-23-6
Voltage - Supply 4V~38V
Function Step-down type
Number of Outputs 1
Topology Step-Down
Operating Temperature -40℃~+85℃
Switch tube (built - in / external) Built-in
Frequency - Switching 650kHz
Output Voltage 12V

Overview

Description

The ETA2842S2G is a high-efficiency, synchronous step-down DC-DC converter from ETA Semiconductor, designed for battery-powered and portable devices.
### Key Features:
- Input Voltage: 2.7V to 5.5V
- Output Voltage: Adjustable (0.6V to VIN)
- Max Output Current: 2A
- High Efficiency (up to 95%) with synchronous rectification
- Low Quiescent Current (15μA) for power-saving modes
- 1.5MHz Switching Frequency (allows small external components)
- Protections: Over-current, over-temperature, and under-voltage lockout (UVLO)
### Applications:
- IoT devices
- Wearables
- Portable electronics
- Battery-powered systems
The ETA2842S2G is available in a compact SOT23-6 package, making it ideal for space-constrained designs. Its high efficiency and low standby current extend battery life, while integrated protections enhance reliability.
For detailed specs, refer to the datasheet from ETA Semiconductor.

Equivalent

The ETA2842S2G is a synchronous buck converter. Equivalent or similar products include:
- MP2307 (Monolithic Power Systems)
- LM2675 (Texas Instruments)
- AP3406 (Diodes Incorporated)
- SY8303 (Silergy)
These chips offer comparable specifications (e.g., input voltage, output current, switching frequency) and can serve as alternatives depending on design requirements. Always verify datasheets for exact compatibility.

Features

The ETA2842S2G is a synchronous step-down DC-DC converter with the following key features:
- Input Voltage Range: 4.5V to 18V
- Output Voltage: Adjustable (0.925V to 15V)
- Output Current: Up to 2A
- Efficiency: Up to 95%
- Switching Frequency: 500kHz (fixed)
- Protections: Over-current (OCP), over-temperature (OTP), and under-voltage lockout (UVLO)
- Package: SOP-8 (EP)
- Low Quiescent Current: ~30μA in shutdown mode
- Soft-Start Function: Reduces inrush current
Ideal for portable devices, networking equipment, and industrial applications.

Pinout

The ETA2842S2G is a 16-pin synchronous step-down DC-DC converter IC. Key functions include:
- Input Voltage Range: 4.5V to 18V
- Output Current: Up to 2A
- Switching Frequency: 500kHz (typ.)
- Efficiency: Up to 95%
- Protections: Overcurrent (OCP), overvoltage (OVP), and thermal shutdown (TSD)
Pin Functions (Selected Key Pins):
- VIN (Pin 1, 16): Power input
- SW (Pin 3, 14): Switching node
- FB (Pin 6): Feedback voltage (0.6V reference)
- EN (Pin 7): Enable control
- GND (Pins 2, 4, 5, 8, 9, 10, 11, 12, 13, 15): Ground
Compact and efficient, it’s ideal for battery-powered devices, industrial systems, and consumer electronics.

Package

The ETA2842S2G is a Synchronous Buck Converter IC in a SOP-8 (Small Outline Package). It features a compact, surface-mount design suitable for efficient power management in space-constrained applications. The SOP-8 package has 8 pins and is commonly used for DC-DC converters.

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