TC1044SMJA

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Converter
• Characteristics: Low-power, high-efficiency
• Package: Surface Mount Technology (SMT)
• Essence: Charge Pump Voltage Converter
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Input Voltage Range: 1.5V to 5.5V
• Output Voltage Range: -1.0V to -5.2V
• Output Current: Up to 50mA
• Efficiency: Up to 96%
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The TC1044SMJA has a total of 8 pins:

1. V+ (Positive Power Supply)
2. GND (Ground)
3. OSC (Oscillator Frequency Control)
4. VIN (Input Voltage)
5. VOUT (Output Voltage)
6. C1 (External Capacitor 1)
7. C2 (External Capacitor 2)
8. SHDN (Shutdown Control)

Functional Features

• Low Quiescent Current: Ensures minimal power consumption during standby mode.
• High Efficiency: Provides efficient voltage conversion, reducing power loss.
• Wide Input Voltage Range: Allows compatibility with various power sources.
• Shutdown Control: Enables the device to be turned off when not in use, conserving energy.

Advantages and Disadvantages

Advantages: - Compact Size: The small form factor makes it suitable for space-constrained applications. - Low Cost: Offers cost-effective voltage conversion solution. - Easy Integration: Can be easily integrated into existing circuit designs.

Disadvantages: - Limited Output Current: The maximum output current is limited to 50mA. - Narrow Output Voltage Range: The output voltage range is limited to -1.0V to -5.2V.

Working Principles

The TC1044SMJA is a charge pump voltage converter that utilizes switched capacitor techniques to generate a negative output voltage from a positive input voltage. It employs an internal oscillator to control the charge and discharge cycles of external capacitors, resulting in an inverted output voltage. The device operates by transferring charge from the input capacitor to the output capacitor, effectively stepping up the voltage magnitude while reversing its polarity.

Detailed Application Field Plans

The TC1044SMJA finds applications in various fields, including:

1. Portable Electronics: Used in battery-powered devices such as smartphones, tablets, and portable media players to provide negative voltage rails for display drivers, audio amplifiers, and other components.
2. Industrial Automation: Employed in industrial control systems to generate negative supply voltages for analog signal conditioning circuits and sensor interfaces.
3. Automotive Electronics: Integrated into automotive electronic systems to generate negative bias voltages for LCD displays, LED backlighting, and audio amplifiers.
4. Medical Devices: Utilized in medical equipment to generate negative voltages required for powering sensors, amplifiers, and display modules.

Detailed and Complete Alternative Models

1. ICL7660S: Similar charge pump voltage converter with adjustable output voltage range.
2. MAX660: Integrated circuit offering similar functionality with higher output current capability.
3. LTC1044: Low-power voltage converter with extended temperature range.

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