Overview
The LT1054IS8#TRPBF, manufactured by Analog Devices Inc., is a monolithic, bipolar, switched-capacitor voltage converter and regulator. This device is designed to provide higher output current compared to previous models and is suitable for a wide range of applications requiring efficient voltage conversion.
The LT1054IS8#TRPBF is part of the LT1054 series, which includes various package options and temperature ranges, making it versatile for different design needs.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Supply Current | ILOAD = 0mA, VIN = 3.5V | 2.5 | 3.0 | 4.0 | mA |
| Supply Current | ILOAD = 0mA, VIN = 15V | 3.0 | 4.0 | 5.0 | mA |
| Supply Voltage Range | - | 3.5 | - | 15 | V |
| Voltage Loss (VIN – |VOUT|) | CIN = COUT = 100µF Tantalum, IOUT = 10mA | 0.35 | 1.10 | 1.35 | V |
| Output Resistance | ∆IOUT = 10mA to 100mA | - | 10 | 15 | Ω |
| Oscillator Frequency | 3.5V ≤ VIN ≤ 15V | 15 | - | 40 | kHz |
| Reference Voltage | IREF = 60µA, TJ = 25°C | 2.25 | 2.50 | 2.75 | V |
| Regulated Voltage | VIN = 7V, TJ = 25°C, RL = 500Ω | -5.20 | -5.00 | -4.70 | V |
| Line Regulation | 7V ≤ VIN ≤ 12V, RL = 500Ω | - | 5 | 25 | mV |
Key Features
- High Output Current: The LT1054IS8#TRPBF provides higher output current compared to previous models, making it suitable for applications requiring significant power.
- Switched-Capacitor Voltage Converter: This device uses a switched-capacitor architecture, which eliminates the need for inductors, making it more compact and reliable.
- Shutdown Functionality: The device features a shutdown pin that can be used to turn off the regulator and reduce quiescent current to approximately 100µA, enhancing power efficiency.
- Wide Operating Temperature Range: Available in various packages with operating temperature ranges from 0°C to 100°C and –40°C to 100°C, making it versatile for different environmental conditions.
- Reference Voltage Stability: The device offers a stable reference voltage with a temperature coefficient, ensuring consistent performance across different temperatures.
Applications
- Power Supplies: The LT1054IS8#TRPBF is ideal for use in power supply circuits where high efficiency and compact design are essential.
- Battery-Powered Devices: Its low quiescent current and shutdown functionality make it suitable for battery-powered devices where power conservation is critical.
- Industrial Control Systems: The device can be used in industrial control systems that require stable and efficient voltage conversion.
- Consumer Electronics: It is also applicable in consumer electronics such as portable devices, audio equipment, and other applications requiring efficient power management.
Q & A
- What is the primary function of the LT1054IS8#TRPBF?
The LT1054IS8#TRPBF is a monolithic, bipolar, switched-capacitor voltage converter and regulator.
- What is the typical supply current of the LT1054IS8#TRPBF at VIN = 3.5V?
The typical supply current is 3.0 mA at VIN = 3.5V.
- What is the maximum supply voltage for the LT1054IS8#TRPBF?
The maximum supply voltage for the LT1054IS8#TRPBF is 15V.
- How does the shutdown function work on the LT1054IS8#TRPBF?
Pulling the feedback/shutdown pin below the shutdown threshold (≈0.45V) puts the device into shutdown, turning off the regulator and switching, and reducing quiescent current to approximately 100µA.
- What is the typical oscillator frequency of the LT1054IS8#TRPBF?
The typical oscillator frequency is between 15 kHz and 40 kHz for 3.5V ≤ VIN ≤ 15V.
- What is the reference voltage of the LT1054IS8#TRPBF?
The reference voltage is typically 2.50V at IREF = 60µA and TJ = 25°C.
- What are the common applications of the LT1054IS8#TRPBF?
Common applications include power supplies, battery-powered devices, industrial control systems, and consumer electronics.
- What are the available package options for the LT1054IS8#TRPBF?
The device is available in 8-Lead Plastic SO and 16-Lead Plastic SO packages.
- What is the operating temperature range for the LT1054IS8#TRPBF?
The operating temperature range is –40°C to 100°C for the IS8 package.
- How does the voltage loss vary with output current?
The voltage loss increases with output current; for example, it is 0.35V at IOUT = 10mA and 1.35V at IOUT = 100mA).
