ZL2004ALNFT-01

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The ZL2004ALNFT-01 is an integrated three-terminal DC-to-DC switching regulator controller from the PMIC-Voltage Regulators-DC DC Switching Controllers product family. It is a low voltage, low power advanced current mode pulse width modulation (PWM) controller that provides a full range of features and protection included over current protection, thermal protection, under voltage lockout, reverse polarity protection and more.

The ZL2004ALNFT-01 can be used in various voltage rails such as 1.5V, 1.8V, 2.5V and even multi-purpose rail. It is designed to operate at up to 500kHz switching frequency and supports output current range of up to 3A. The ZL2004ALNFT-01 incorporates a phase-lock loop multiplier that provides phase-compensated synchronization to an external clock or multiplies the internal clock by an integer factor.

The ZL2004ALNFT-01 can be used in a wide range of applications such as LED controllers, LED drivers, DC-DC converters, solar converters and other portable or consumer electronics. The integrated high-side and low-side MOSFETs of ZL2004ALNFT-01 ensure low on-resistance and low power consumption. The on-board power FETs provide the flexibility for customers to implementation their own DC-DC switching regulator.

The internal MOSFET switch of the ZL2004ALNFT-01 can be externally pulled up to maximize the efficiency of the system. External synchronization and wide range power input voltage of 4.5V to 22V make ZL2004ALNFT-01 applicable to high current and high voltage applications. The ZL2004ALNFT-01 supports both voltage and current mode of operation and generates an accurate output voltage over a range of output current.

The working principle of the ZL2004ALNFT-01 is based on current mode control where the internal current sense amplifiers measure the output current and the error amplifier adjusts the internal reference voltage. The error amplifier compares the feedback voltage with the reference voltage and produces an error signal to adjust the gate drive of the internal MOSFET. The pulse width of the error signal is proportional to the error voltage and will always adjust the gate drive according to the error voltage.

The ZL2004ALNFT-01 is available in a 8-pin eSIP and 3DDIP package for improved thermal percolation and a wide range of operating temperature of -40°C to +85°C. It uses low quiescent current for high efficiency and a wide range of safety features including under voltage lockout, open drain shutdown output and low in-circuit value host control.

In conclusion, the ZL2004ALNFT-01 is a high performance, low voltage, low power integrated three-terminal DC-to-DC switching regulator controller from the PMIC-Voltage Regulators-DC DC Switching Controllers product family. It is suitable for applications such as LED controllers, LED drivers, DC-DC converters, solar converters and other portable or consumer electronics with wide range of input and operating temperature. The ZL2004ALNFT-01 is designed to operate with current mode control and wide range power input voltage of 4.5V to 22V.

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