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RS2596
150KHz, 3A PWM Buck DC/DC Converter
General Description
The RS2596 is Monolithic IC that design for a step‐down DC/DC Converter, and own the ability of driving a 3A load without
additional transistor component.
The output version included 3.3V, 5V, 12V and an adjustable type. It operates at a switching frequency of 150KHz thus
allowing smaller sized filter components than what would be needed with lower frequency switching regulators. Other
features include a guaranteed ±4% tolerance on output voltage under specified input voltage and output load conditions,
and ±15% on the oscillator frequency. Regarding protected function, thermal shutdown is to prevent over temperature
operating from damage, and current limit is against over current operating of the output switch.
Features
Applications
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3.3V, 5V, 12V and adjustable
Adjustable version output voltage range: 1.23‐37V
Simple High‐efficiency step‐down regulator
Positive to negative converter
On‐card switching regulators
4% max over line and load conditions
±
150KHz 15% fixed switching frequency
±
TTL shutdown capability
Operating voltage can be up to 40V
Output load current: 3A
TO220‐5 and TO263‐5 packages
Low power standby mode
Thermal‐shunt down and current‐limit protection
Built‐in switching a transistor on chip, requires only 4
external components
Application Circuits
Adjustable Output Voltage Versions
This integrated circuit can be damaged by ESD. Orister Corporation recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
DS‐RS2596‐07 September, 2009
www.Orister.com