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RS1509
150KHz, 2A PWM Buck DC/DC Converter
Description
The RS1509 is Monolithic IC that design for a step-down DC/DC Converter, and own the
ability of driving a 2A 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.
8-Lead Plastic
DIP-8
Package Code: P
•
8-Lead Plastic
SOP-8
Package Code: S
Features
•
3.3V, 5V, 12V and adjustable
•
Adjustable version output voltage range: 1.4-37V
• ±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: 2A
•
SOP-8 and DIP-8 packages
•
Low power standby mode
•
Thermal-shuntdown and current-limit protection
•
High efficiency
•
Built-in switching a transistor on chip, requires only 4 external components
Applications
•
Simple High-efficiency step-down regulator
•
Positive to negative converter
•
On-card switching regulators
Pin Connections
8
7
6
5
Pin1: Operating Voltage Input
Pin2: Switch Output
Pin3: Output Voltage Feedback Control
Pin5: Ground
Pin6: Ground
Pin7: Ground
Pin8: Ground
1
2
3
4
Pin4: ON/OFF Shutdown
DS-RS1509-04 Oct, 2007
www.Orister.com
ORISTER [ ORISTER CORPORATION ]
