Exar – XR76203/5/8-Q: AEC-Q100 Qualified Family of 40V PoL Regulators


The XR76203-Q, XR76205-Q and XR76208-Q are 3A/5A/8A synchronous step down regulators designed to provide a wide 5.5V to 40V input voltage range and an adjustable output voltage down to 0.6V while providing excellent transient response and output accuracy over the entire voltage range. In addition, the XR76208-Q is the highest current (8A), fully synchronous, 40V regulator on the market that offers AEC-Q100 qualification. The XR76203/5/8-Q family features Exar’s proprietary emulated current mode Constant On-Time (COT) control loop. It provides fast transient response with ceramic output capacitors and excellent line and load regulation while simplifying system design.

• ≥0.6V adjustable output voltage
• No loop compensation required
• Programmable 200ns to 2μs on-time
• Selectable CCM or CCM/DCM
• Precision enable and power good flag
• Programmable soft start
• Proprietary constant on-time control
• Stable ceramic output capacitor operation
• Constant 100kHz to 800kHz frequency
• Programmable hiccup current limit with thermal compensation
• 30-pin 5 x 5mm QFN package
• 1k MSRP: $3.45 US