AP61204Q 5.5 V, 2 A, Low IQ Synchronous Buck Converter

Product Highlights > AP61204Q 5.5 V, 2 A, Low IQ Synchronous Buck Converter

            AP61204Q 5.5 V, 2 A, Low IQ Synchronous Buck Converter
                    Diodes synchronous buck converters minimize external component count due to their adoption of constant on-time (COT) control to achieve fast transient response
    

Image of Diodes AP61204Q Synchronous Buck Converter The Diodes AP61204Q is a 2 A, automotive-compliant, synchronous buck converter with a wide input voltage range of 2.4 V to 5.5 V. It integrates a 70 mΩ high-side power MOSFET and a 50 mΩ low-side power MOSFET to provide high-efficiency stepdown DC/DC conversion. The AP61204Q has a power-good output that warns the system of irregular conditions and can be used in sequencing control applications. The device minimizes external component count due to its adoption of constant on-time (COT) control to achieve fast transient response, easy loop stabilization, and low output voltage ripple. The AP61204Q uses an enable (EN) pin to select whether it works in a forced-PWM mode for all loads or switches to PFM at lighter loads. It is available in an SOT563 package and is pin-compatible with its 600 mA, 1 A, and 3 A counterparts.

Features

2.4 V to 5.5 V operating voltage range: covers both 3.3 V and 5 V rail conversion to core voltage
Low (19 µA) quiescent current (IQ): maximizes light-load efficiency
PWM/PFM adjustable mode control via EN pin: supports fixed f_SW and light-load high-efficiency (LLHE) PFM mode

Accurate ±5% PG with internal 5 MΩ pull-up option: provides overvoltage and undervoltage warning with reduced BOM
1 kΩ soft output discharge: ensures that there is no residue charge on output
High operating frequency of 2.4 MHz: reduces external inductor/capacitor size and above medium wave band

Applications