Description

The?ADP2441 / ADP2442 is a constant frequency, current mode control,synchronous, step-down, dc-to-dc regulator that is capable ofdriving loads of up to 1 A with excellent line and load regulationcharacteristics. The ADP2442 operates with a wide input voltagerange from 4.5 V to 36 V, which makes it ideal for regulating powerfrom a wide variety of sources. In addition, the ADP2442 hasvery low minimum on time (50 ns) and is, therefore, suitable forapplications requiring a very high step-down ratio.The output voltage can be adjusted from 0.6 V to 0.9 ? VIN.High efficiency is obtained with integrated low resistanceN-channel MOSFETs for both high-side and low-side devices.The switching frequency is adjustable from 300 kHz to 1 MHz withan external resistor. The ADP2442 also has an accurate power-good(PGOOD) open-drain output signal.The ADP2442 offers the flexibility of external clock synchronization.The switching frequency can be synchronized to an externalclock, applied to the SYNC/MODE pin. The ADP2442 can alsobe configured to operate in the forced fixed frequency mode forlow EMI or power saving mode to reduce the switching losses atlight load.The ADP2442 uses hiccup mode to protect the IC from shortcircuits or from overcurrent conditions on the output. The internalsoft start limits inrush current during startup for a wide variety ofload capacitances. Other key features include input undervoltagelockout (UVLO), thermal shutdown (TSD), and precision enable(EN), which can also be used as a logic level shutdown input.The ADP2442 is available in a 3 mm ? 3 mm, 12-lead LFCSPpackage and is rated for a junction temperature range from?40?C to +125?C.APPLICATIONS Point of load applications Distributed power systems Industrial control supplies Standard rail conversion to 24 V/12 V/5 V/3.3 V

Type:

Part number: ADP2442-EVALZ

More details from Analog Devices Inc.