ADP5053ACPZ-R7

产品概述

The ADP5053ACPZ-R7 is a high performance Buck Regulator enables direct connection to high input voltages up to 15.0V with no preregulators. Channel 1 and 2 integrate high-side power MOSFET and low-side MOSFET drivers. External NFETs can be used in low-side power devices to achieve an efficiency optimized solution and deliver a programmable output current of 1.2, 2.5 or 4A. Combining Channel 1 and 2 in a parallel configuration can provide a single output with up to 8A of current. Channel 3 and 4 integrate both high-side and low-side MOSFETs to deliver an output current of 1.2A. The switching frequency of the ADP5053 can be programmed or synchronized to an external clock. The ADP5053 contains a precision enable pin on each channel for easy power-up sequencing or adjustable UVLO threshold. The ADP5053 contains supervisory circuits that monitor voltage level. The watchdog timer can generate a reset if the WDI is not toggled within a preset timeout period.

• ±1.5% output accuracy over full temperature range
• 250kHz to 1.4MHz adjustable switching frequency
• Adjustable/fixed output options via factory fuse
• Single 8A output (Channel 1 and 2 operated in parallel)
• Precision enable with 0.8 V accurate threshold
• Active output discharge switch
• FPWM or automatic PWM/PSM selection
• Frequency synchronization input or output
• Optional latch-off protection on OVP/OCP failure

应用

电源管理, 医用