XR76208-Q中文资料AEC-Q100 Qualified 40V, 8A Synchronous Step-Down COT Regulator数据手册MaxLinear规格书

描述 Description

The XR76208-Q is a synchronous step-down regulator combining the controller, drivers, bootstrap diode and MOSFETs in a single package for point-of-load supplies well suited for automotive applications. Qualified per AEC-Q100, the XR76208-Q has a load current rating of 8A. A wide 5.5V to 40V input voltage range allows for single supply operation from industry standard 24V ±10%, 18V-36V, and rectified 18VAC and 24VAC rails.
With a proprietary emulated current mode Constant On-Time (COT) control scheme, the XR76208-Q provides extremely fast line and load transient response using ceramic output capacitors. It requires no loop compensation, simplifying circuit implementation and reducing overall component count. The control loop also provides 0.07% load and 0.15% line regulation and maintains constant operating frequency. A selectable power saving mode allows the user to operate in Discontinuous Conduction Mode (DCM) at light current loads thereby significantly increasing the converter efficiency.
A host of protection features, including overcurrent, over temperature, short-circuit and UVLO, helps achieve safe operation under abnormal operating conditions.
The XR76208-Q is available in a RoHS-compliant, green/halogen-free space-saving QFN 5 x 5mm package.

特性 Features

·Automotive AEC-Q100 Qualified
·Temperature Grade1: -40°C to 125°C
·HBM ESD Class Level 2
·CDM ESD Class Level C4B
·Controller, drivers, bootstrap diode and MOSFETs integrated in one package
·8A step-down regulator
·Wide 5.5V to 40V input voltage range
·≥0.6V adjustable output voltage
·Proprietary constant on-time control
·No loop compensation required
·Stable ceramic output capacitor operation
·Programmable 200ns to 2µs on-time
·Constant 100kHz to 800kHz frequency
·Selectable CCM or CCM/DCM
·CCM/DCM for high efficiency at light load
·CCM for constant frequency at light load
·Programmable hiccup current limit with thermal compensation
·Precision enable and power good flag
·Programmable soft-start
·30-pin 5 x 5mm QFN package with wettable flanks
·Pin compatible 5A regulator, XR76205-Q
·Pin compatible 3A regulator, XR76203-Q

应用 Application

·Automotive systems
·Distributed power architecture
·Point-of-Load (POL) converters
·Power supply modules
·FPGA, DSP and processor supplies
·Industrial and military applications
·Base stations, switches/routers and servers