LTC1044AIS8#PBF

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Converter/Charge Pump

Characteristics: - Converts a positive voltage to its negative equivalent - Generates a doubled output voltage from an input voltage - Low power consumption - Small package size - Wide operating temperature range

Package: 8-Pin SOIC (Small Outline Integrated Circuit)

Essence: The LTC1044AIS8#PBF is a voltage converter IC that can convert a positive voltage to its negative equivalent or generate a doubled output voltage from an input voltage.

Packaging/Quantity: The LTC1044AIS8#PBF is available in a standard 8-pin SOIC package. It is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 1.5V to 10V
• Output Voltage Range: -1.5V to -10V (inverting mode), 2V to 20V (doubling mode)
• Maximum Output Current: 20mA
• Operating Temperature Range: -40°C to 85°C
• Supply Current: 150µA (typical)

Pin Configuration

The LTC1044AIS8#PBF has the following pin configuration:

```

---

| | --| V+ GND |-- Pin 1: Positive Supply Voltage (V+) --| VIN VOUT |-- Pin 2: Input Voltage (VIN) / Output Voltage (VOUT) --| GND VIN |-- Pin 3: Ground (GND) --| VOUT GND |-- Pin 4: Output Voltage (VOUT) / Ground (GND) --| GND V+ |-- Pin 5: Ground (GND) / Positive Supply Voltage (V+) --| VOUT VIN |-- Pin 6: Output Voltage (VOUT) / Input Voltage (VIN) --| GND GND |-- Pin 7: Ground (GND) --| V- V- |-- Pin 8: Negative Supply Voltage (V-) |___________| ```

Functional Features

• Inverting Mode: Converts a positive input voltage to its negative equivalent.
• Doubling Mode: Generates a doubled output voltage from an input voltage.
• Low Power Consumption: Consumes only 150µA of supply current.
• Wide Operating Temperature Range: Can operate in temperatures ranging from -40°C to 85°C.

Advantages and Disadvantages

Advantages: - Versatile functionality for voltage conversion - Low power consumption - Small package size - Wide operating temperature range

Disadvantages: - Limited maximum output current (20mA)

Working Principles

The LTC1044AIS8#PBF operates based on charge-pump voltage conversion techniques. In the inverting mode, it uses a switched-capacitor charge pump to convert a positive input voltage to its negative equivalent. In the doubling mode, it generates a doubled output voltage by charging and discharging capacitors in a specific sequence.

Detailed Application Field Plans

The LTC1044AIS8#PBF can be used in various applications, including: 1. Portable electronic devices requiring negative voltage generation. 2. LCD displays that require both positive and negative voltages. 3. Audio amplifiers and signal processing circuits. 4. Battery-powered systems where low power consumption is crucial.

Detailed and Complete Alternative Models

Some alternative models to the LTC1044AIS8#PBF include: - MAX660CPA+: A similar voltage converter IC with a different pin configuration. - ICL7660CPA: Another voltage converter IC with similar functionality. - TPS60403DBVR: A charge pump IC with adjustable output voltage.

These alternative models can be considered based on specific requirements and compatibility with the application.