Overview
The LTC3407AEMSE#PBF, produced by Analog Devices Inc., is a dual, constant frequency, synchronous step-down DC/DC converter. This component is designed for low power applications and operates within an input voltage range of 2.5V to 5.5V. It features a constant switching frequency of 1.5MHz, which allows the use of small, low-cost capacitors and inductors. Each output voltage is adjustable from 0.6V to 5V, making it versatile for various power management needs.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Operating Voltage Range (VIN) | 2.5 | 5.5 | V | |
| Switching Frequency | 1.5 | MHz | ||
| Output Voltage Range | 0.6 | 5 | V | |
| Output Current per Channel | 600 | mA | ||
| Internal Switch On-Resistance | 0.35 | Ω | ||
| Feedback Pin Input Current (IFB) | 30 | nA | ||
| Operating Temperature Range | –40 | 125 | °C |
Key Features
- High efficiency up to 95% due to internal synchronous 0.35Ω power switches, eliminating the need for external Schottky diodes.
- Constant 1.5MHz switching frequency, allowing the use of small, low-cost capacitors and inductors.
- Low ripple noise in Burst Mode operation, with an IQ of 40μA.
- Current mode operation for excellent line and load transient response.
- Short-circuit protection and low dropout operation with 100% duty cycle.
- Ultralow shutdown current (IQ < 1μA).
- Externally synchronizable oscillator and optional external soft-start.
- Power-On Reset (POR) output.
Applications
The LTC3407AEMSE#PBF is suitable for a variety of low power applications, including:
- Portable electronics such as smartphones, tablets, and handheld devices.
- Embedded systems and IoT devices requiring efficient power management.
- Medical devices where high efficiency and low noise are critical.
- Industrial control systems and automation equipment.
- Consumer electronics such as set-top boxes and gaming consoles.
Q & A
- What is the operating voltage range of the LTC3407AEMSE#PBF?
The operating voltage range is from 2.5V to 5.5V.
- What is the switching frequency of the LTC3407AEMSE#PBF?
The switching frequency is constant at 1.5MHz.
- What is the adjustable output voltage range?
The output voltage is adjustable from 0.6V to 5V.
- Does the LTC3407AEMSE#PBF require external Schottky diodes?
No, it does not require external Schottky diodes due to its internal synchronous power switches.
- What are the key features of the Burst Mode operation?
Burst Mode operation offers low ripple noise and an IQ of 40μA, optimizing efficiency at low load currents.
- What is the maximum output current per channel?
The maximum output current per channel is 600mA.
- What is the internal switch on-resistance?
The internal switch on-resistance is 0.35Ω.
- Does the LTC3407AEMSE#PBF have short-circuit protection?
- What is the shutdown current (IQ) of the LTC3407AEMSE#PBF?
The shutdown current (IQ) is less than 1μA).
- Can the oscillator be externally synchronized?
