Overview
The LTC3417AIDHC-1#PBF is a dual synchronous step-down DC/DC converter produced by Analog Devices Inc. This component is designed for medium power applications and operates within an input voltage range of 2.25V to 5.5V. It features two independent output channels, one capable of delivering up to 1.5A and the other up to 1A, with a constant programmable switching frequency of up to 4MHz. This allows for the use of small, low-cost capacitors and inductors, making it suitable for space-constrained designs.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Operating Voltage Range (VIN1, VIN2) | 2.25 | 5.5 | V | |
| Output Voltage Range (VOUT1, VOUT2) | 0.8 | 5 | V | |
| Switching Frequency | up to 4 | MHz | ||
| Output Current (IOUT1) | 1.5 | A | ||
| Output Current (IOUT2) | 1 | A | ||
| Feedback Voltage (VFB1, VFB2) | 0.784 | 0.8 | 0.816 | V |
| Operating Temperature Range | –40 | 125 | °C | |
| Junction Temperature (TJ) | 125 | °C |
Key Features
- Dual synchronous step-down DC/DC converter with two independent output channels (1.5A and 1A).
- Constant programmable switching frequency up to 4MHz, allowing the use of small, low-cost capacitors and inductors.
- Internal synchronous, low RDS(ON) power switches for high efficiency without the need for external Schottky diodes.
- Three modes of operation at low currents: Burst Mode, Pulse Skipping Mode, and Forced Continuous Mode to optimize efficiency.
- Open drain Power-On Reset (POR) pin that goes low when either output voltage falls 6% below regulation.
- Digital soft-start feature to slowly ramp the peak inductor current over 1024 clock cycles after shutdown).
- Overtemperature protection to protect the device during momentary overload conditions).
Applications
The LTC3417AIDHC-1#PBF is suitable for a variety of medium power applications, including:
- Portable electronics such as smartphones, tablets, and laptops.
- Industrial control systems and automation.
- Medical devices requiring high efficiency and compact design.
- Aerospace and defense systems where space and weight are critical.
- Automotive systems requiring reliable and efficient power conversion.
Q & A
- What is the input voltage range of the LTC3417AIDHC-1#PBF? The input voltage range is from 2.25V to 5.5V.
- What are the output current capabilities of the LTC3417AIDHC-1#PBF? The device can deliver up to 1.5A on one channel and up to 1A on the other channel.
- What is the switching frequency of the LTC3417AIDHC-1#PBF? The switching frequency is programmable up to 4MHz.
- Does the LTC3417AIDHC-1#PBF have built-in overtemperature protection? Yes, it includes overtemperature protection to safeguard the device during momentary overload conditions.
- What are the low current operation modes available on the LTC3417AIDHC-1#PBF? The device supports Burst Mode, Pulse Skipping Mode, and Forced Continuous Mode to optimize efficiency at low currents.
- How does the Power-On Reset (POR) feature work on the LTC3417AIDHC-1#PBF? The POR pin goes low when either output voltage falls 6% below regulation and remains low for 150ms longer than the duration of the out-of-regulation condition.
- What is the operating temperature range of the LTC3417AIDHC-1#PBF? The operating temperature range is from –40°C to 125°C.
- Does the LTC3417AIDHC-1#PBF have a digital soft-start feature? Yes, it features a digital soft-start that slowly ramps the peak inductor current over 1024 clock cycles after shutdown.
- What types of packages are available for the LTC3417AIDHC-1#PBF? The device is available in 3x5 DFN-16 and TSSOP-20E packages.
- What are some common applications for the LTC3417AIDHC-1#PBF? It is commonly used in portable electronics, industrial control systems, medical devices, aerospace and defense systems, and automotive systems.
