LTC3458EDE

The LTC3458EDE is a highly efficient, dual-output DC/DC converter designed by Analog Devices (formerly Linear Technology) for portable applications. It integrates a step-up (boost) and a step-down (buck) converter, allowing it to manage dual output voltages from a single input source. This feature is especially useful in battery-powered devices where space and efficiency are critical.
The LTC3458EDE operates with input voltages ranging from 2.4V to 5.5V, making it suitable for use with single-cell lithium-ion or multi-cell alkaline batteries. The device delivers two independent output voltages, typically configured for 3.3V and 5V. It is equipped with power-saving features such as Burst Mode® operation, which enhances efficiency at light loads, and also offers low shutdown current, further preserving battery life.
Additionally, the LTC3458EDE is available in a compact 12-lead DFN package, enhancing space efficiency on circuit boards. Its ability to deliver high efficiency, compact size, and dual output capabilities makes it ideal for applications like handheld devices and portable electronics.

The LTC3458EDE chip is a DC/DC converter designed for white LED applications. Equivalent products include the TPS61060 from Texas Instruments, the MAX1555 from Maxim Integrated, and the LT1932 from Analog Devices. These chips offer similar functionalities, such as boost conversion for driving LED arrays. When selecting an equivalent, consider voltage range, current output, efficiency, and package size to ensure compatibility with your specific application needs.

The LTC3458EDE is a high-efficiency, dual-output DC/DC converter designed for portable applications. It offers two independently regulated outputs: one boost and one inverting. The device supports input voltages from 2.7V to 5.5V, making it suitable for single-cell lithium-ion, multi-cell alkaline, or nickel-metal hydride battery configurations.
Key features include:
- Boost output voltage range of up to 15V.
- Inverting output voltage range down to -13.5V.
- High efficiency over a wide range of loads due to its synchronous rectification for both outputs.
- Programmable switching frequency up to 3MHz, allowing for small external components.
- Low quiescent current, which extends battery life in portable devices.
- Built-in Power-On Reset (POR) and Soft-Start functions to ensure reliable start-up.
- Thermal shutdown and over-current protection for enhanced reliability.
- Available in a compact 12-lead 3mm x 4mm DFN package, suitable for space-constrained applications.
The LTC3458EDE is ideal for handheld devices requiring multiple voltage rails, such as portable media players, digital cameras, and similar electronics.

The LTC3458EDE is a DC/DC converter designed by Analog Devices (formerly Linear Technology). It comes in a 12-lead (3mm × 3mm) DFN package. The LTC3458EDE is a synchronous step-up converter designed to drive white LEDs and provide regulated current. It is primarily used for backlighting applications in portable devices such as mobile phones, digital cameras, and PDAs.
The key functions of this device include:
1. Boost Converter: Steps up voltage to drive multiple series-connected LEDs.
2. Current Regulation: Provides a constant current output for consistent LED brightness.
3. Efficiency: High efficiency due to synchronous rectification.
4. Dimming Control: Supports various dimming methods including PWM and analog dimming.
Ensure to reference the datasheet for detailed specifications and any additional functionalities.

The LTC3458EDE is manufactured by Analog Devices, Inc. This company specializes in the design and production of a broad range of analog, mixed-signal, and digital signal processing integrated circuits (ICs) used in electronic equipment. Analog Devices serves various sectors, including industrial, automotive, communications, healthcare, and consumer electronics.

The LTC3458EDE is a high-efficiency, synchronous buck-boost DC/DC converter. Key application areas include portable electronic devices where efficient power management is crucial, such as smartphones, tablets, digital cameras, and handheld gaming consoles. It is also used in battery-powered systems requiring a wide input voltage range. Additionally, the LTC3458EDE can be found in industrial and medical equipment that demands consistent voltage regulation despite varying battery levels. Its ability to deliver seamless transitions between buck and boost modes makes it suitable for applications needing reliable power delivery across different operating conditions.

The LTC3458EDE is available in a 10-lead (3mm x 3mm) plastic DFN (Dual Flat No Leads) package.