LTC1629IG#PBF

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The LTC1629IG#PBF is a monolithic high-frequency, adjustable frequency, switch-mode synchronous step-down voltage regulator featuring an internal MOSFET. This device is capable of producing adjustable output voltages as low as 0.7V. With a wide input voltage range of 4.5V to 35V, it can be used with standard or battery input sources. The LTC1629IG#PBF is ideal for a wide range of applications, including handheld and portable devices, automotive, networking and communication systems, servers, data storage systems, and Point of Load (POL) applications.

The LTC1629IG#PBF is a highly integrated solution for many converter designs. It has a “low profile” design and combines an on-board pulse width modulation (PWM) controller and high-frequency internal MOSFET switch for low parts-count, low-voltage step-down DC/DC conversion. This device also has the added benefit of adjustable switching frequency, allowing the user to optimise efficiency, ripple, and external component size.

The LTC1629IG#PBF has a variety of unique features that make it well suited to many demanding applications. For example, currents can be accurately regulated with the internal 0.5% accurate voltage reference, and PWM dimming can operate at up to a 1MHz frequency. The addition of its adjustable frequency capability means that component selection can be optimized for specific applications.

In terms of its application field, the LTC1629IG#PBF can be used in a variety of consumer, automotive, industrial and telecom/network applications. It is particularly suited to current/energy limiting applications such as those found in PoL converters, battery packs, or automotive applications. Its input voltage range of 4.5V to 35V also makes it the ideal solution for single-cell Li-ion battery designs in a variety of consumer and telecom/network applications.

The LTC1629IG#PBF operates on the principle of a synchronous, step-down, switch-mode converter utilizing a Pulse Width Modulated (PWM) technique. In this topology, the switch is controlled by a pulse that regulates the amount of energy transferred to the load. A resistor divider is used to reduce the input voltage to an intermediate level, at which point a comparator determines if the current through the switch should be on or off.

When the PWM control pin goes high, the internal MOSFET switch is turned on, allowing current to flow from the input to the output. When the PWM control pin goes low, the switch is turned off, preventing current from flowing from the input to the output. This switching action is controlled by the switching frequency, which is adjustable with an external resistor.

The LTC1629IG#PBF is designed for a wide range of applications, including those in the consumer, automotive, industrial and telecom/network markets, and features an array of features that make it well suited to many demanding applications. Its wide input voltage range and adjustable switching frequency, combined with its low-voltage and low-parts-count design, make it an ideal solution for current/energy limiting and PoL applications, as well as single-cell Li-ion battery designs.

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