LTC1729CS8-4.2#PBF

Product Overview

Category

The LTC1729CS8-4.2#PBF belongs to the category of integrated circuits (ICs) and specifically falls under the voltage regulators category.

Use

This product is primarily used for voltage regulation in various electronic devices and systems.

Characteristics

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage: 4.2V
• Output Current: Up to 250mA
• Dropout Voltage: 300mV at 250mA
• Low Quiescent Current: 30µA
• Shutdown Current: <1µA
• Operating Temperature Range: -40°C to 85°C
• Package Type: 8-Lead Plastic Small Outline (SOIC)
• RoHS Compliant: Yes

Packaging/Quantity

The LTC1729CS8-4.2#PBF is typically packaged in reels or tubes, containing a specific quantity of units per package. The exact packaging and quantity may vary depending on the supplier or manufacturer.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage: 4.2V ±2%
• Output Current: Up to 250mA
• Dropout Voltage: 300mV at 250mA
• Quiescent Current: 30µA
• Shutdown Current: <1µA
• Line Regulation: ±0.3% typical
• Load Regulation: ±0.3% typical
• Ripple Rejection: 70dB typical
• Operating Temperature Range: -40°C to 85°C
• Package Type: 8-Lead Plastic Small Outline (SOIC)
• RoHS Compliant: Yes

Pin Configuration

The LTC1729CS8-4.2#PBF has the following pin configuration:

```

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| | --| VOUT | --| GND | --| VIN | --| SHDN | |___________| ```

Pin Descriptions: - VOUT: Output Voltage - GND: Ground - VIN: Input Voltage - SHDN: Shutdown Control

Functional Features

1. Voltage Regulation: The LTC1729CS8-4.2#PBF provides a stable output voltage of 4.2V, ensuring reliable operation of connected devices.
2. Low Quiescent Current: With a quiescent current of only 30µA, this voltage regulator minimizes power consumption and extends battery life in portable applications.
3. Shutdown Control: The SHDN pin allows for easy on/off control of the regulator, further reducing power consumption during standby or idle periods.
4. Wide Input Voltage Range: The input voltage range of 2.7V to 5.5V makes this regulator suitable for a wide range of applications.

Advantages and Disadvantages

Advantages

• Low quiescent current for power efficiency
• Wide input voltage range for versatility
• Shutdown control for power management
• Compact package size for space-constrained designs
• RoHS compliant for environmental considerations

Disadvantages

• Limited output current capacity (up to 250mA)
• Dropout voltage of 300mV may affect performance in low voltage scenarios

Working Principles

The LTC1729CS8-4.2#PBF is a linear voltage regulator that utilizes a feedback mechanism to maintain a constant output voltage. It compares the output voltage with a reference voltage and adjusts the internal circuitry to regulate the output voltage at the desired level. The regulator operates by continuously adjusting the resistance to maintain a stable output voltage, even with varying input voltages and load conditions.

Detailed Application Field Plans

The LTC1729CS8-4.2#PBF can be used in various applications, including but not limited to: 1. Battery-powered devices: Portable electronics, handheld instruments, and battery-operated sensors. 2. Embedded systems: Microcontrollers, digital signal processors, and other low-power integrated circuits. 3. Automotive electronics: On-board vehicle systems, infotainment systems, and dashboard displays. 4. Industrial control systems: PLCs (Programmable Logic Controllers), motor control units, and power management modules.

Detailed and Complete Alternative Models

1. LTC1729ES5-4.2#TRMPBF: SOT-23 package, 4.2V output voltage, 250mA output current.
2. LTC1729ES5-4.2#PBF: SOT-23 package, 4.2V output voltage, 250mA output current.
3. **LTC