Overview
The LT1054CS8#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 switched-capacitor converters, with a maximum output current of 100mA for the LT1054 and 125mA for the LT1054L. It features an adaptive switch driver scheme that optimizes efficiency over a wide range of output currents, resulting in significantly lower voltage losses.
Key Specifications
| Specification | Value |
|---|---|
| Output Current | 100mA (LT1054), 125mA (LT1054L) |
| Supply Voltage Range | 3.5V to 15V (LT1054), 3.5V to 7V (LT1054L) |
| Voltage Loss at 100mA | Typically 1.1V |
| Quiescent Current | Typically 2.5mA |
| Shutdown Current | Less than 100µA |
| Oscillator Frequency | Nominal 25kHz |
| Operating Junction Temperature Range | 0°C to 100°C (LT1054C/LT1054LC), -40°C to 100°C (LT1054I) |
| Package Type | 8-Lead Plastic SO (LT1054CS8#TRPBF) |
| Storage Temperature Range | -55°C to 150°C (J8, N8, and S8 Packages), -65°C to 150°C (S Package) |
Key Features
- High output current with low voltage losses.
- Adaptive switch driver scheme for optimized efficiency.
- External shutdown capability via the feedback pin.
- External oscillator synchronization option.
- Regulated output voltage achievable with an external resistive divider.
- Pin compatible with LTC1044/ICL7660.
- Available in various package types including SO-8 and SW16.
Applications
- Voltage conversion in battery-powered devices.
- Power supply systems requiring negative or positive voltage conversion.
- Industrial control systems where efficient voltage regulation is necessary.
- Medical devices requiring stable and efficient power supply.
- Aerospace and automotive systems where compact and reliable power conversion is critical.
Q & A
- What is the maximum output current of the LT1054?
The maximum output current of the LT1054 is 100mA, while the LT1054L can provide up to 125mA.
- What is the typical voltage loss at 100mA output current?
The typical voltage loss at 100mA output current is 1.1V.
- How can the LT1054 be shut down?
The LT1054 can be shut down by pulling the feedback pin below the shutdown threshold (approximately 0.45V).
- What is the nominal oscillator frequency of the LT1054?
The nominal oscillator frequency of the LT1054 is 25kHz.
- Is the LT1054 pin compatible with other devices?
Yes, the LT1054 is pin compatible with the LTC1044/ICL7660.
- What are the available package types for the LT1054?
The LT1054 is available in various package types, including 8-Lead Plastic SO and 16-Lead Plastic SO.
- What is the operating junction temperature range for the LT1054?
The operating junction temperature range for the LT1054C/LT1054LC is 0°C to 100°C, and for the LT1054I, it is -40°C to 100°C).
- Can the LT1054 be used for regulated output voltage?
Yes, a regulated output voltage can be achieved by adding an external resistive divider).
- What is the storage temperature range for the LT1054?
The storage temperature range for the LT1054 is -55°C to 150°C for J8, N8, and S8 packages, and -65°C to 150°C for the S package).
- What is the quiescent current of the LT1054 in shutdown mode?
The quiescent current in shutdown mode is approximately 100µA).
