XR-495
XR-495 is Pulse-Width Modulating Regulator manufactured by Exar.
DESCRIPTION
FUNCTIONAL BLOCK DIAGRAM
The XR-495 is a monolithic pulse width modulating regulator designed to contain all blocks necessary for a switching regulator. Included in the 16 pin dual in-line packages is a voltage reference, oscillator, control logic, error amplifiers, and dual unmitted outputs. This device can be used for switching regulators of either polarity, polarity converters, transformer coupled DC to DC converters, transformerless voltage doublers, and many other power control applications. A 39V zener diode allows operation with supply voltages exceeding 40V. The XR-495M is fully specified for operation over the full military temperature range from
- 55°C to + 125°C, while the XR-495CN and XR-495CP are designed for mercial applications over O°C to
+ 70 o e.
NON INV
INPUT
INV INPUT
FEED BACK
DEAD TIME CONTROL
INV INPUT
OUTPUT CONTROL
STEERING INPUT
FEATURES plete PWM Power Control...
